:root {
  --paper: #FFFFFF;
  --ink: #0A0A0A;
  --grey: #8A8A8A;       /* крупний текст, 3.4:1 */
  --grey-small: #6B6B6B; /* дрібний текст, 5.3:1 */

  --pad: 20px;
  --gap: 4px;
  --cols: 8;
  --col: calc((100vw - 2 * var(--pad) - (var(--cols) - 1) * var(--gap)) / var(--cols));
  --big: clamp(1.45rem, 2.35vw, 2.15rem);
  --small: 12px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Geist", system-ui, sans-serif;
  font-size: var(--small);
  line-height: 1.35;
  -webkit-font-smoothing: antialiased;
}
p, h1, h2, figure { margin: 0; }
h1, h2 { font: inherit; }
a { color: inherit; text-decoration: none; }
img { display: block; width: 100%; height: 100%; object-fit: cover; background: #EEE; }
:focus-visible { outline: 1.5px solid var(--ink); outline-offset: 3px; }

.grid {
  display: grid;
  grid-template-columns: repeat(var(--cols), minmax(0, 1fr));
  column-gap: var(--gap);
  padding-inline: var(--pad);
}

/* Дрібний шар */
.small { font-size: var(--small); line-height: 1.35; }
.muted { color: var(--grey-small); }
.link { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 0.2em; }

/* Великий шар: сіра мітка, чорна суть */
.big {
  font-size: var(--big);
  line-height: 1.08;
  letter-spacing: -0.04em;
  font-weight: 400;
  text-wrap: pretty;
}
.big .g { color: var(--grey); }
.big a { text-decoration: underline; text-decoration-thickness: 1.5px; text-underline-offset: 0.12em; }
.lede { position: relative; text-indent: calc(var(--col) + var(--gap)); }
.lede[data-n]::before {
  content: attr(data-n);
  position: absolute; left: 0; top: 0.6em;
  text-indent: 0; letter-spacing: 0;
  font-size: var(--small); line-height: 1;
  color: var(--grey-small);
}
@media (hover: hover) and (pointer: fine) {
  a:hover { color: var(--grey-small); }
}

.cap { margin-top: 6px; }

/* Шапка */
.nav { padding-block: 20px; align-items: baseline; }
.nav .n { color: var(--grey-small); margin-right: 0.3em; }
.nav .end { justify-self: end; }
.nav .short { display: none; }

/* Перший екран */
.hero { padding-top: 22px; grid-template-rows: auto 1fr; height: calc(100svh - 58px); min-height: 34rem; max-height: 64rem; }
.hero .portrait { grid-column: 1; grid-row: 1; aspect-ratio: 4 / 5; max-height: 26svh; }
.hero .portrait img { object-position: 57% 30%; }
.hero .text { grid-column: 1 / span 4; grid-row: 2; align-self: end; padding-right: 2.5rem; display: grid; gap: 1.1rem; }
.hero .main { grid-column: 5 / span 4; grid-row: 1 / span 2; height: 100%; min-height: 0; }
.hero .main img { object-position: 14% 50%; }

/* Секції */
.section { padding-top: clamp(7rem, 13vw, 12rem); row-gap: 2.5rem; }

/* 1. Пацієнтам */
.p-text { grid-column: 3 / span 6; padding-right: 4rem; }
.p-note { grid-column: 3 / span 2; }
.p-cases { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(var(--cols), minmax(0, 1fr)); column-gap: var(--gap); margin-top: 3rem; align-items: end; }
.p-cases figure:nth-child(1) { grid-column: 1 / span 4; }
.p-cases figure:nth-child(2) { grid-column: 6 / span 1; }
.p-cases figure:nth-child(3) { grid-column: 7 / span 2; }
.p-cases .frame { aspect-ratio: 16 / 10; }
.p-cases figure:nth-child(2) .frame { aspect-ratio: 4 / 5; }
.p-cases figure:nth-child(3) .frame { aspect-ratio: 4 / 5; }
.place { margin-top: 5rem; display: grid; gap: 0.9rem; align-content: start; }
.place.poltava { grid-column: 1 / span 4; padding-right: 2rem; }
.place.odesa { grid-column: 5 / span 4; }
.todo { color: var(--grey); border-bottom: 1px dashed var(--grey); }

/* 2. Лікарям */
.d-text { grid-column: 1 / span 5; padding-right: 3rem; }
.d-cta { grid-column: 1 / span 5; }
.d-img { grid-column: 3 / span 6; grid-row: 3; margin-top: 3rem; }
.d-img .frame { aspect-ratio: 16 / 9; }
.d-cap { grid-column: 1 / span 2; grid-row: 3; align-self: end; }

/* 3. Курси */
.c-img { grid-column: 1 / span 4; grid-row: 1 / span 3; }
.c-img .frame { aspect-ratio: 4 / 5; }
.c-img img { object-position: 31% 50%; }
.c-text { grid-column: 5 / span 4; padding: 0 2rem 0 1.5rem; }
.c-cta { grid-column: 5 / span 4; padding-left: 1.5rem; }
.c-thumbs { grid-column: 5 / span 4; align-self: end; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--gap); }
.c-thumbs .frame { aspect-ratio: 4 / 5; }
.c-thumbs .cap { grid-column: 1 / -1; }

/* 4. Наукова робота */
.s-text { grid-column: 1 / span 6; padding-right: 3rem; }
.s-img { grid-column: 5 / span 4; margin-top: 3rem; }
.s-img .frame { aspect-ratio: 3 / 2; }
.s-img img { object-position: 35% 50%; }

/* Контакти */
.contacts { padding-top: clamp(7rem, 13vw, 12rem); row-gap: 1.5rem; }
.contact { display: grid; gap: 0.15rem; }
.contact.a { grid-column: 1 / span 4; }
.contact.b { grid-column: 5 / span 4; }

.foot { padding-block: 9rem 20px; align-items: end; row-gap: 0.5rem; }
.foot .end { justify-self: end; }

/* Мобільні */
@media (max-width: 820px) {
  :root { --cols: 4; --pad: 14px; }
  .nav { grid-template-columns: 1fr auto; row-gap: 10px; padding-block: 16px 0; }
  .nav a { grid-column: auto !important; }
  .nav a:first-child { grid-column: 1 !important; grid-row: 1; }
  .nav .end { grid-column: 2 !important; grid-row: 1; justify-self: end; }
  .nav .sections { grid-column: 1 / -1; grid-row: 2; display: flex !important; flex-wrap: wrap; gap: 6px 16px; }
  .nav .long { display: none; }
  .nav .short { display: inline; }
  .hero .portrait { grid-column: 1; grid-row: 1; }
  .hero { height: auto; min-height: 0; max-height: none; grid-template-rows: auto; }
  .hero .portrait { display: none; }
  .hero { padding-top: 16px; }
  .hero .main { grid-column: 1 / -1; grid-row: 1; margin-top: 0; height: auto; aspect-ratio: 4 / 5; }
  .hero .text { grid-column: 1 / -1; grid-row: 2; margin-top: 1.5rem; padding: 0; }
  .p-text, .p-note, .place.poltava, .place.odesa,
  .d-text, .d-cta, .d-img, .d-cap,
  .c-text, .c-cta, .c-thumbs, .c-img, .s-text, .s-img,
  .contact.a, .contact.b { grid-column: 1 / -1; grid-row: auto; padding-right: 0; padding-left: 0; }
  .p-cases figure:nth-child(1) { grid-column: 1 / -1; margin-bottom: var(--gap); }
  .p-cases figure:nth-child(2) { grid-column: 1 / span 2; }
  .p-cases figure:nth-child(3) { grid-column: 3 / span 2; }
  .place { margin-top: 1.5rem; }
  .d-img, .s-img { margin-top: 0; }
  .foot > * { grid-column: 1 / -1 !important; justify-self: start !important; }
}

/* 5. Статті на головній і в списку */
.a-text { grid-column: 1 / span 6; padding-right: 3rem; }
.a-list { grid-column: 3 / span 6; list-style: none; margin: 1rem 0 0; padding: 0; }
.a-list li { display: grid; grid-template-columns: minmax(0, 1fr) auto; column-gap: 2rem; align-items: baseline; padding-block: 0.55rem; }
.a-list .t { font-size: var(--big); line-height: 1.08; letter-spacing: -0.04em; }
.a-list a.t { text-decoration: underline; text-decoration-thickness: 1.5px; text-underline-offset: 0.12em; }
.a-list span.t { color: var(--grey); }
.a-list .m { color: var(--grey-small); white-space: nowrap; }
.a-more { grid-column: 3 / span 6; }

/* Сторінка статті */
.art-head { padding-top: clamp(3rem, 8vw, 6rem); row-gap: 1.5rem; }
.art-head .crumbs { grid-column: 1 / -1; }
.art-head h1 { grid-column: 1 / span 6; font-size: clamp(2rem, 4.2vw, 3.6rem); line-height: 1.02; letter-spacing: -0.045em; text-wrap: balance; }
.art-head .by { grid-column: 1 / span 3; }
.art-lead { grid-column: 3 / span 5; margin-top: 3rem; }
.art-img { grid-column: 1 / span 6; margin-top: 4rem; }
.art-img .frame { aspect-ratio: 16 / 10; }
.art-body { grid-column: 3 / span 4; padding-top: 4rem; font-size: 18px; line-height: 1.55; letter-spacing: -0.01em; max-width: 64ch; }
.art-body h2 { font-size: 1.6rem; line-height: 1.12; letter-spacing: -0.035em; margin: 3.2rem 0 1rem; }
.art-body p { margin: 0 0 1rem; }
.art-body ul, .art-body ol { margin: 0 0 1rem; padding-left: 1.2em; }
.art-body li { margin-bottom: 0.4rem; }
.art-side { grid-column: 7 / span 2; padding-top: 4rem; align-self: start; position: sticky; top: 20px; display: grid; gap: 0.25rem; }
.art-foot { grid-column: 3 / span 4; margin-top: 4rem; padding-top: 1.5rem; border-top: 1px solid #E5E5E5; display: grid; gap: 1rem; }

@media (max-width: 820px) {
  .a-text, .a-list, .a-more,
  .art-head h1, .art-head .by, .art-lead, .art-img, .art-body, .art-side, .art-foot { grid-column: 1 / -1; padding-right: 0; }
  .a-list li { grid-template-columns: 1fr; }
  .art-side { position: static; padding-top: 2rem; }
  .art-body { padding-top: 2rem; font-size: 17px; }
  .art-lead, .art-img { margin-top: 2rem; }
}

.s-pubs { grid-column: 3 / span 6; margin-top: 0.5rem; }
@media (max-width: 820px) { .s-pubs { grid-column: 1 / -1; } }

/* Внутрішні сторінки */
.page-sec { padding-top: clamp(5rem, 10vw, 9rem); row-gap: 2rem; }
.page-sec.first { padding-top: clamp(3rem, 8vw, 6rem); }
.page-lede { grid-column: 1 / span 6; padding-right: 3rem; }
.page-cta { grid-column: 1 / span 6; }
.page-cta a, .page-lede a { text-decoration: underline; text-decoration-thickness: 1.5px; text-underline-offset: 0.12em; }
.sub { grid-column: 1 / span 2; color: var(--grey); }
.items { grid-column: 3 / span 6; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2.25rem 3rem; }
.items h3 { font-size: 1.3rem; line-height: 1.15; letter-spacing: -0.03em; font-weight: 400; margin: 0 0 0.45rem; }
.items p { font-size: 14px; line-height: 1.45; color: var(--grey-small); max-width: 42ch; margin: 0; }
.items-note { grid-column: 3 / span 6; }
.seq { grid-column: 3 / span 6; list-style: none; margin: 0; padding: 0; counter-reset: s; display: grid; grid-template-columns: repeat(auto-fit, minmax(9.5rem, 1fr)); gap: 2rem 1.5rem; }
.seq li { counter-increment: s; font-size: 14px; line-height: 1.45; }
.seq li::before { content: counter(s) "."; display: block; font-size: var(--big); letter-spacing: -0.04em; line-height: 1; color: var(--grey); margin-bottom: 0.7rem; }
.seq-note { grid-column: 3 / span 4; }
.gallery { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(var(--cols), minmax(0, 1fr)); column-gap: var(--gap); align-items: end; }
.gallery .g-wide { grid-column: 1 / span 4; }
.gallery .g-wide .frame { aspect-ratio: 16 / 10; }
.gallery .g-a { grid-column: 5 / span 2; }
.gallery .g-b { grid-column: 7 / span 2; }
.gallery .g-a .frame, .gallery .g-b .frame { aspect-ratio: 4 / 5; }
.wide-right { grid-column: 3 / span 6; }
.wide-right .frame { aspect-ratio: 16 / 9; }
.wide-cap { grid-column: 3 / span 4; }
.facts { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2rem var(--gap); margin-top: 2rem; }
.course { grid-column: 5 / span 4; padding-left: 1.5rem; display: grid; gap: 1.25rem; align-content: start; }
.prog { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem; }
.prog ul { list-style: none; margin: 0.5rem 0 0; padding: 0; display: grid; gap: 0.3rem; }
.thumbs { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--gap); }
.thumbs .frame { aspect-ratio: 4 / 5; }
.thumbs-cap { grid-column: 1 / span 4; }
.pubs { grid-column: 3 / span 6; display: grid; gap: 2.5rem; }
.pubs h3 { font-size: 1.3rem; line-height: 1.15; letter-spacing: -0.03em; font-weight: 400; margin: 0 0 0.5rem; }
.pubs h3 a { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 0.15em; }
.pubs p { margin: 0 0 0.35rem; max-width: 62ch; }
.pubs p.small:last-child { font-size: 14px; line-height: 1.45; }
.more { grid-column: 3 / span 6; }

@media (max-width: 820px) {
  .page-lede, .page-cta, .sub, .items, .items-note, .seq, .seq-note, .wide-right, .wide-cap,
  .course, .thumbs-cap, .pubs, .more { grid-column: 1 / -1; padding-right: 0; padding-left: 0; }
  .items, .facts, .prog { grid-template-columns: 1fr; }
  .gallery .g-wide { grid-column: 1 / -1; margin-bottom: var(--gap); }
  .gallery .g-a { grid-column: 1 / span 2; }
  .gallery .g-b { grid-column: 3 / span 2; }
  .thumbs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}