:root {
  --ink: #1C1412;
  --paper: #F6F0E7;
  --tone: #EAE0D2;
  --scarf: #5E2525;
  --action: #F08A1F;
  --muted: #6E615A;
  --line: #D5C8B9;
  --light-muted: #D5C8BF;
  --radius: 28px;
  --shadow: 0 24px 64px rgba(60,30,20,.12);
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 32px; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: 'Onest', sans-serif; font-size: 18px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
body.menu-open { overflow: hidden; }
button, input, select { font: inherit; }
button, a, input, select, summary { -webkit-tap-highlight-color: transparent; }
button, select, summary { cursor: pointer; }
a { color: inherit; text-decoration: none; }
button { color: inherit; }
img { display: block; max-width: 100%; }
svg { display: block; }
h1, h2, h3, p, figure, blockquote { margin: 0; }
h1, h2 { font-family: 'Unbounded', sans-serif; font-weight: 600; line-height: 1.24; letter-spacing: -.055em; text-wrap: balance; }
h1 { font-size: 64px; }
h2 { font-size: 42px; }
h3 { font-size: 21px; font-weight: 600; line-height: 1.35; letter-spacing: -.025em; }
strong { font-weight: 600; }
ul, ol { margin: 0; padding: 0; list-style: none; }
:focus-visible { outline: 3px solid var(--scarf); outline-offset: 6px; }
.hero :focus-visible, .report :focus-visible, .footer :focus-visible { outline-color: var(--paper); }
::selection { background: var(--scarf); color: var(--paper); }
[hidden] { display: none !important; }
.container { width: min(1200px, calc(100% - 96px)); margin-inline: auto; }
.svg-library { position: absolute; width: 0; height: 0; pointer-events: none; }
.skip-link { position: fixed; top: 12px; left: 12px; padding: 12px 24px; border-radius: 24px; background: var(--paper); z-index: 100; transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 24px; padding: 20px 28px; min-height: 60px; border: 1px solid transparent; border-radius: 999px; background: var(--action); color: var(--ink); font-size: 16px; font-weight: 600; line-height: 1.25; text-align: center; transition: transform .2s, box-shadow .2s; }
.button svg, .text-link svg { width: 24px; height: 24px; flex: 0 0 24px; transition: transform .2s; }
.button:hover { transform: translateY(-2px); box-shadow: 0 8px 24px #1c14121a; }
.button:hover svg, .text-link:hover svg { transform: translateX(4px); }
.text-link { display: inline-flex; align-items: center; gap: 16px; font-size: 16px; font-weight: 600; text-decoration: underline; text-underline-offset: 6px; text-decoration-thickness: 1px; }
.arch { border-radius: 999px 999px 28px 28px; background: var(--tone); object-fit: cover; }
.section-intro { max-width: 680px; margin-bottom: 48px; }
.section-intro p { margin-top: 24px; color: var(--muted); }
/* Шапка */
.header { position: relative; z-index: 10; background: var(--paper); border-bottom: 1px solid var(--line); }
.header__inner { display: grid; grid-template-columns: 52px minmax(0, 1fr) 220px; align-items: center; gap: 48px; min-height: 120px; padding-block: 16px; }
.header__brand { display: block; width: auto; }
.header__brand img { width: auto; height: 76px; max-width: none; }
.header__nav { display: flex; flex-wrap: wrap; column-gap: 24px; row-gap: 12px; align-items: center; font-size: 14px; line-height: 1.4; }
.header__nav a { padding-block: 4px; }
.header__nav a:hover, .footer__nav a:hover { text-decoration: underline; text-underline-offset: 5px; }
.header__actions { display: grid; justify-items: center; gap: 8px; }
.header__phone { font-size: 16px; font-weight: 600; white-space: nowrap; }
.header__button { padding: 12px 20px; min-height: 44px; width: 100%; }
.header__toggle { display: none; }
/* Одна SVG-партитура для всех разделителей */
main { position: relative; isolation: isolate; }
.page-sound { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; pointer-events: none; overflow: hidden; }
.sound-divider { height: 160px; pointer-events: none; }
/* Первый экран */
.hero { position: relative; isolation: isolate; background: var(--ink); color: var(--paper); overflow: hidden; }
.hero__art { position: absolute; inset: 0 0 144px calc(50% + 128px); z-index: -1; }
.hero__art img { width: 100%; height: 100%; aspect-ratio: 3/2; object-fit: cover; object-position: 78% center; }
.hero__inner { padding-top: 96px; padding-bottom: 32px; }
.hero__copy { max-width: 750px; }
.hero__eyebrow { display: flex; gap: 12px; align-items: center; margin-bottom: 32px; font-size: 14px; }
.hero__sound-icon { display: flex; align-items: center; gap: 3px; width: 24px; height: 24px; flex-shrink: 0; }
.hero__sound-icon i { display: block; width: 2px; height: 8px; background: var(--action); }
.hero__sound-icon i:nth-child(2), .hero__sound-icon i:nth-child(4) { height: 17px; }
.hero__sound-icon i:nth-child(3) { height: 24px; }
.hero h1 { max-width: 750px; }
.hero__lead { max-width: 540px; margin-top: 32px; color: var(--light-muted); }
.hero__links { display: flex; align-items: center; flex-wrap: wrap; gap: 24px; margin-top: 32px; }
.hero__phone { font-size: 16px; white-space: nowrap; text-underline-offset: 6px; text-decoration: underline; }
.hero__proofs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: 96px; padding-top: 24px; border-top: 1px solid #f6f0e738; background: var(--ink); }
.hero__proof { display: flex; align-items: flex-start; gap: 16px; font-size: 14px; max-width: 310px; }
.hero__proof > svg { flex-shrink: 0; width: 28px; height: 28px; fill: none; stroke: currentColor; stroke-width: 1.3; color: var(--paper); }
.hero__proof strong { font-weight: 600; }
/* Ситуации */
.noise__grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 16px; }
.noise__tile { position: relative; grid-column: span 3; min-height: 270px; padding: 24px 24px 56px; border: 1px solid var(--line); border-radius: var(--radius); transition: background .25s, border-color .25s, transform .25s; }
.noise__tile--wide { grid-column: span 4; min-height: 246px; }
.noise__tile:hover, .noise__tile:focus-visible { background: var(--tone); border-color: var(--muted); transform: translateY(-3px); }
.noise__wave { width: 100%; max-width: 240px; height: 64px; margin-bottom: 24px; overflow: visible; }
.noise__wave path { fill: none; stroke: url(#sound-gradient); stroke-width: 2; stroke-linecap: round; }
.noise__tile h3 { font-size: 19px; }
.noise__tile p { font-size: 17px; color: var(--muted); margin-top: 8px; }
.noise__arrow { position: absolute; right: 24px; bottom: 24px; width: 24px; height: 24px; }
.noise__surfaces { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.noise__surfaces a { display: inline-flex; min-height: 48px; align-items: center; border: 1px solid var(--line); border-radius: 99px; padding: 8px 24px; font-size: 16px; transition: color .2s, background .2s; }
.noise__surfaces a:hover { background: var(--ink); color: var(--paper); }
/* Схема */
.physics__intro { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; margin-bottom: 48px; }
.physics__intro h2 { font-size: 40px; }
.physics__intro p { color: var(--muted); }
.physics__body { display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr); gap: 48px; align-items: center; }
.physics__diagrams { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.physics__diagram { width: 100%; height: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--tone); }
.physics__diagram--isolated { background: var(--paper); border-color: var(--scarf); }
.physics__diagram text { font-family: 'Onest', sans-serif; font-size: 17px; fill: var(--ink); }
.physics__diagram .physics__conclusion { font-size: 18px; font-weight: 600; }
.physics__signal { stroke-dasharray: 420; animation: signal-flow 6s ease-in-out infinite; }
.physics__signal--quiet { animation-delay: .4s; }
@keyframes signal-flow { 0%, 100% { stroke-dashoffset: 0; } 50% { stroke-dashoffset: 35; } }
.physics__figure { max-width: 420px; }
.physics__image { width: 100%; height: auto; aspect-ratio: 4/5; }
.physics__figure figcaption { font-size: 14px; line-height: 1.6; color: var(--muted); margin-top: 16px; }
/* Прайс */
.prices__grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.prices__card { padding: 24px; background: var(--tone); border: 1px solid transparent; border-radius: var(--radius); transition: border-color .2s; }
.prices__card.is-selected { border-color: var(--scarf); }
.prices__heading { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.prices__heading h3 { font-size: 19px; }
.prices__heading svg { width: 40px; height: 40px; flex-shrink: 0; fill: none; stroke: var(--muted); stroke-width: 1.5; stroke-linecap: round; }
.prices__amount { display: flex; flex-wrap: wrap; align-items: baseline; column-gap: 8px; margin-top: 32px; line-height: 1.3; white-space: nowrap; }
.prices__amount strong { font-family: 'Unbounded', sans-serif; font-size: 36px; letter-spacing: -.055em; }
.prices__amount span { font-size: 14px; }
.prices__amount span:last-child { flex-basis: 100%; margin-top: 4px; text-align: right; }
.prices__card ul { display: grid; gap: 12px; border-top: 1px solid var(--line); margin-top: 24px; padding-top: 24px; font-size: 17px; }
.prices__card li:last-child { margin-top: 4px; font-weight: 600; }
.calculator { display: grid; grid-template-columns: 1.1fr .75fr 1fr auto; gap: 24px; align-items: end; padding: 32px; margin-top: 24px; border: 1px solid var(--line); border-radius: var(--radius); }
.calculator__field { display: grid; gap: 8px; font-size: 14px; color: var(--muted); min-width: 0; }
input, select { width: 100%; min-width: 0; min-height: 56px; border: 1px solid var(--muted); border-radius: 12px; padding: 12px 16px; background: transparent; color: var(--ink); font-size: 17px; line-height: 1.4; }
select { padding-right: 40px; appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231C1412' stroke-width='1.5'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E"); background-size: 20px; background-repeat: no-repeat; background-position: right 12px center; text-overflow: ellipsis; }
select option { background: var(--paper); }
input::placeholder { color: var(--muted); opacity: 1; }
.calculator__result { align-self: center; padding-top: 24px; font-size: 24px; font-weight: 600; letter-spacing: -.04em; line-height: 1.3; white-space: nowrap; }
.calculator__button { gap: 12px; min-height: 56px; padding: 16px 24px; }
/* Главный довод: открытый монтаж */
.report { position: relative; isolation: isolate; overflow: hidden; background: var(--scarf); color: var(--paper); }
.report__background { position: absolute; z-index: -1; left: 0; top: 0; height: 100%; width: 100%; object-fit: cover; object-position: left center; opacity: .45; mix-blend-mode: screen; -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 55%); mask-image: linear-gradient(90deg, transparent 0%, #000 55%); }
.report__inner { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: 96px; padding-block: 96px; align-items: center; }
.report__scarf { width: 88px; height: 32px; margin-bottom: 32px; }
.report h2 { max-width: 620px; }
.report__lead { margin-top: 32px; color: #E6D6CF; }
.report__points { display: grid; gap: 24px; margin-top: 48px; }
.report__points li { display: flex; align-items: flex-start; gap: 16px; }
.report__points svg { width: 24px; height: 24px; margin-top: 3px; flex-shrink: 0; }
.report__points p { font-size: 17px; color: #E6D6CF; }
.report__points strong { color: var(--paper); }
.report__phone-wrap { position: relative; padding-block: 32px; }
.report__phone-wrap::before, .report__phone-wrap::after { content: ''; position: absolute; width: 115%; height: 90%; border: 1px solid #f6f0e725; border-radius: 999px; left: -7.5%; top: 5%; z-index: -1; transform: rotate(-12deg); }
.report__phone-wrap::after { transform: rotate(12deg); width: 130%; left: -15%; }
.report__phone { position: relative; width: min(100%, 368px); margin: auto; background: var(--paper); color: var(--ink); border: 8px solid var(--ink); border-radius: 48px; box-shadow: 0 32px 64px #1c141240; overflow: hidden; transform: rotate(2deg); }
.report__speaker { width: 88px; height: 16px; margin: 8px auto 0; border-radius: 20px; background: var(--ink); }
.report__messenger-header { display: flex; align-items: center; gap: 12px; padding: 16px; border-bottom: 1px solid var(--line); }
.report__messenger-header img { width: 36px; height: auto; object-fit: contain; }
.report__messenger-header strong { font-size: 16px; }
.report__feed { height: 600px; padding: 16px 12px 24px; overflow-y: auto; overscroll-behavior: contain; scrollbar-width: thin; scrollbar-color: var(--muted) var(--tone); }
.report__feed:focus-visible { outline-offset: -4px; outline-color: var(--scarf); }
.report__message { padding: 12px; background: #FFFDF9; border-radius: 16px 16px 16px 4px; margin-bottom: 16px; }
.report__time { font-size: 14px; color: var(--muted); margin-bottom: 8px; }
.report__message > img { width: 100%; aspect-ratio: 4/3; height: auto; object-fit: cover; border-radius: 8px; }
.report__caption { font-size: 14px; line-height: 1.5; margin-top: 12px; }
.report__photo-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; }
.report__photo-pair img { width: 100%; height: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 6px; }
.report__video { position: relative; }
.report__video svg { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 40px; height: 40px; }
.report__video span { position: absolute; bottom: 4px; right: 4px; background: var(--ink); color: var(--paper); font-size: 14px; padding: 0 4px; border-radius: 4px; }
/* Шторка */
.comparison__heading { display: flex; justify-content: space-between; align-items: end; gap: 32px; margin-bottom: 48px; }
.comparison__heading p { max-width: 320px; font-size: 14px; color: var(--muted); }
.comparison__frame { position: relative; width: min(100%, 1000px); margin-inline: auto; aspect-ratio: 4/3; border-radius: 999px 999px 28px 28px; overflow: hidden; background: var(--tone); touch-action: pan-y; user-select: none; }
.comparison__after, .comparison__before, .comparison__before img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; pointer-events: none; }
.comparison__before { clip-path: inset(0 calc(100% - var(--split)) 0 0); }
.comparison__label { position: absolute; bottom: 32px; padding: 8px 16px; background: var(--paper); border-radius: 99px; font-size: 14px; line-height: 1.4; }
.comparison__label--before { left: 32px; }
.comparison__label--after { right: 32px; }
.comparison__slider { position: absolute; width: 48px; height: 100%; top: 0; left: var(--split); transform: translateX(-50%); cursor: ew-resize; touch-action: none; }
.comparison__slider::before { content: ''; position: absolute; width: 2px; background: var(--paper); height: 100%; top: 0; left: 23px; box-shadow: 0 0 16px #1c141240; }
.comparison__handle { position: absolute; left: 50%; top: 58%; transform: translate(-50%, -50%); display: flex; align-items: center; justify-content: center; width: 96px; height: 56px; background: var(--scarf); border-radius: 999px; border: 2px solid var(--paper); box-shadow: var(--shadow); }
.comparison__handle svg { width: 64px; height: 32px; }
.comparison__slider:focus-visible { outline: none; }
.comparison__slider:focus-visible .comparison__handle { outline: 3px solid var(--paper); outline-offset: 5px; }
/* Пять шагов */
.process__steps { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 32px; margin-top: 48px; }
.process__marker { display: flex; align-items: center; justify-content: space-between; position: relative; padding-bottom: 24px; margin-bottom: 24px; border-bottom: 1px solid var(--line); }
.process__marker svg { width: 64px; height: 32px; }
.process__marker span { font-size: 14px; color: var(--muted); }
.process__steps h3 { font-size: 19px; }
.process__steps p { font-size: 17px; color: var(--muted); margin-top: 12px; }
/* Отзывы */
.reviews__heading { display: flex; justify-content: space-between; align-items: center; gap: 32px; margin-bottom: 48px; }
.reviews__rating { display: flex; align-items: center; gap: 16px; }
.reviews__rating > svg { width: 32px; height: 32px; color: var(--scarf); flex-shrink: 0; }
.reviews__rating p { display: flex; align-items: center; gap: 16px; }
.reviews__rating strong { font-family: 'Unbounded', sans-serif; font-size: 40px; letter-spacing: -.05em; }
.reviews__rating span { max-width: 160px; font-size: 14px; line-height: 1.4; color: var(--muted); }
.reviews__grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.reviews__card { display: flex; flex-direction: column; padding: 32px; border: 1px solid var(--line); border-radius: var(--radius); }
.reviews__stars { display: flex; gap: 4px; color: var(--scarf); margin-bottom: 24px; }
.reviews__stars svg { width: 16px; height: 16px; }
.reviews__card blockquote { font-size: 17px; }
.reviews__card figcaption { color: var(--muted); font-size: 14px; padding-top: 32px; margin-top: auto; }
.reviews__link { margin-top: 32px; }
/* Вопросы */
.faq { display: grid; grid-template-columns: .8fr 1.2fr; gap: 64px; }
.faq__list { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { display: flex; justify-content: space-between; gap: 24px; align-items: center; padding-block: 24px; font-size: 18px; font-weight: 600; line-height: 1.4; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary > span { position: relative; width: 32px; height: 32px; border: 1px solid var(--line); border-radius: 50%; flex-shrink: 0; }
.faq summary > span::before, .faq summary > span::after { content: ''; position: absolute; width: 12px; height: 1px; background: var(--ink); top: 15px; left: 9px; }
.faq summary > span::after { transform: rotate(90deg); }
.faq details[open] summary > span::after { transform: rotate(0); }
.faq details p { margin: 0 56px 24px 0; font-size: 18px; color: var(--muted); }
/* Дополнительные направления */
.audiences { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.audiences__card { padding: 48px; background: var(--tone); border-radius: var(--radius); display: flex; flex-direction: column; align-items: start; }
.audiences__icon { width: 64px; height: 64px; margin-bottom: 32px; fill: none; stroke: var(--muted); stroke-width: 1.4; stroke-linejoin: round; stroke-linecap: round; }
.audiences__card h2 { font-size: 28px; letter-spacing: -.045em; }
.audiences__card p { font-size: 17px; margin-top: 24px; margin-bottom: 32px; max-width: 420px; }
.audiences__card .text-link { margin-top: auto; }
.audiences__card--partner { background: var(--ink); color: var(--paper); }
.audiences__card--partner p { color: var(--light-muted); }
.audiences__card--partner .audiences__icon { stroke: var(--light-muted); }
.audiences__card--partner :focus-visible { outline-color: var(--paper); }
/* Заявка */
.request { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 96px; align-items: center; padding-bottom: 128px; }
.request h2 { margin-bottom: 48px; }
.request__form { display: grid; grid-template-columns: .75fr 1.25fr; gap: 24px; }
.request__field { display: grid; gap: 8px; font-size: 14px; color: var(--muted); min-width: 0; }
.request__field--full { grid-column: 1 / -1; }
.request__submit { grid-column: 1 / -1; width: fit-content; margin-top: 8px; }
.request__after { grid-column: 1 / -1; font-size: 17px; max-width: 520px; }
.request__consent { grid-column: 1 / -1; color: var(--muted); font-size: 13px; line-height: 1.5; max-width: 450px; }
.request__figure { margin-left: auto; width: 100%; max-width: 460px; }
.request__image { aspect-ratio: 4/5; width: 100%; height: auto; }
.request__success { padding-block: 48px; font-family: 'Unbounded', sans-serif; font-size: 28px; line-height: 1.4; }
.request__success svg { width: 48px; height: 48px; margin-bottom: 24px; }
/* Подвал */
.footer { background: var(--ink); color: var(--paper); padding-block: 64px 32px; }
.footer__inner { display: grid; grid-template-columns: 180px 1fr 1fr; gap: 64px; align-items: start; }
.footer__brand img { width: 180px; height: auto; }
.footer__address { max-width: 370px; }
.footer__address p + p { font-size: 14px; margin-top: 24px; color: var(--light-muted); }
.footer__phone { display: inline-block; font-size: 24px; font-weight: 600; margin-top: 16px; }
.footer__nav { display: grid; grid-template-columns: 1fr 1fr; column-gap: 24px; row-gap: 16px; font-size: 14px; color: var(--light-muted); }
.footer__line { display: flex; justify-content: end; margin-top: 48px; padding-top: 24px; border-top: 1px solid #f6f0e72b; }
.footer__line svg { width: 88px; height: 32px; }
@media (min-width: 1600px) { .hero__inner { padding-top: 128px; } .hero__proofs { margin-top: 128px; } }
@media (max-width: 1199px) {
  .header__inner { grid-template-columns: 52px 1fr 48px; min-height: 96px; gap: 24px; }
  .header__actions { justify-self: end; display: flex; gap: 24px; }
  .header__button { width: auto; }
  .header__toggle { display: flex; width: 48px; height: 48px; flex-direction: column; justify-content: center; gap: 6px; padding: 12px; border: 1px solid var(--line); border-radius: 50%; background: transparent; }
  .header__toggle span { display: block; width: 22px; height: 1px; background: var(--ink); transition: transform .2s; }
  .header__toggle[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
  .header__toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
  .header__nav { display: none; }
  .header__nav.is-open { display: flex; position: absolute; top: 100%; left: 0; right: 0; height: calc(100dvh - 96px); padding: 32px 48px; flex-direction: column; align-items: start; justify-content: start; flex-wrap: nowrap; gap: 16px; background: var(--paper); font-size: 18px; overflow: auto; border-top: 1px solid var(--line); }
  .hero h1 { font-size: 60px; }
  .hero__copy { max-width: 700px; }
  .hero__art { left: 48%; opacity: .25; }
  .noise__tile { grid-column: span 6; }
  .noise__tile:last-child { grid-column: span 12; }
  .physics__intro { grid-template-columns: 1fr; gap: 24px; max-width: 680px; }
  .physics__body { grid-template-columns: 1fr; gap: 32px; }
  .physics__figure { width: 65%; margin-inline: auto; }
  .physics__diagrams { gap: 8px; }
  .prices__grid { grid-template-columns: 1fr 1fr; }
  .prices__amount span:last-child { flex-basis: auto; }
  .calculator { gap: 16px; padding: 24px; grid-template-columns: 1.2fr .8fr 1fr; }
  .calculator__button { grid-column: 1 / -1; justify-self: end; }
  .report__inner { gap: 48px; grid-template-columns: 1.2fr 1fr; }
  .report h2 { font-size: 36px; }
  .report__phone { transform: none; }
  .report__feed { height: 580px; }
  .process__steps { gap: 16px; }
  .reviews__card { padding: 24px; }
  .reviews__grid { gap: 16px; }
  .faq { gap: 48px; }
  .audiences__card { padding: 32px; }
  .request { gap: 48px; }
  .footer__inner { grid-template-columns: 144px 1fr 1fr; gap: 32px; }
  .footer__phone { font-size: 20px; }
  .footer__nav { grid-template-columns: 1fr; }
}
@media (max-width: 899px) {
  .container { width: calc(100% - 48px); }
  .hero__copy { max-width: 660px; }
  .hero h1 { font-size: 52px; }
  .hero__inner { padding-top: 64px; }
  .hero__proofs { margin-top: 64px; gap: 24px; }
  .hero__proof { flex-direction: column; gap: 12px; }
  h2 { font-size: 36px; }
  .physics__body { grid-template-columns: 1fr; gap: 32px; }
  .physics__figure { width: 65%; margin-inline: auto; }
  .physics__image { aspect-ratio: 1; }
  .report__inner { grid-template-columns: 1fr; gap: 48px; }
  .report__copy { max-width: 640px; }
  .report__phone-wrap { width: 100%; max-width: 400px; margin-inline: auto; }
  .report__phone { width: 368px; }
  .report__feed { height: 600px; }
  .process__steps { grid-template-columns: 1fr; gap: 32px; max-width: 640px; }
  .process__steps li { position: relative; padding-left: 120px; min-height: 80px; }
  .process__steps li:not(:last-child)::after { content: ''; position: absolute; left: 38px; top: 56px; bottom: -32px; width: 1px; background: var(--line); }
  .process__marker { position: absolute; left: 0; top: 0; width: 80px; padding: 0; margin: 0; border: 0; flex-direction: column; gap: 8px; }
  .reviews__grid { grid-template-columns: 1fr; }
  .reviews__card { padding: 32px; }
  .faq { grid-template-columns: 1fr; gap: 32px; }
  .faq__list { max-width: 680px; }
  .audiences { grid-template-columns: 1fr; }
  .audiences__card p { max-width: 600px; }
  .request { grid-template-columns: 1fr; }
  .request__copy { max-width: 640px; }
  .request__figure { width: 65%; margin-inline: auto; }
  .request__image { aspect-ratio: 1; }
  .footer__inner { grid-template-columns: 144px 1fr; gap: 48px; }
  .footer__nav { grid-column: 1/-1; grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 599px) {
  html { scroll-padding-top: 24px; }
  body { font-size: 17px; }
  h1, .hero h1 { font-size: 34px; line-height: 1.2; letter-spacing: -.06em; }
  h2, .physics__intro h2, .report h2 { font-size: 28px; line-height: 1.3; letter-spacing: -.05em; }
  h3 { font-size: 20px; }
  .container { width: calc(100% - 48px); }
  .button { min-height: 56px; padding: 16px 24px; }
  .section-intro { margin-bottom: 32px; }
  .section-intro p { margin-top: 16px; }
  .sound-divider { height: 96px; }
  .header__inner { min-height: 88px; grid-template-columns: 44px 1fr 44px; gap: 12px; padding-block: 16px; }
  .header__brand { width: auto; }
  .header__brand img { height: 60px; }
  .header__actions { display: flex; flex-direction: column; gap: 4px; align-items: end; }
  .header__phone { font-size: 14px; }
  .header__button { padding: 4px 0; min-height: 28px; border: 0; background: none; font-size: 16px; text-decoration: underline; text-underline-offset: 4px; }
  .header__button:hover { box-shadow: none; transform: none; }
  .header__toggle { width: 44px; height: 44px; padding: 10px; }
  .header__nav.is-open { height: calc(100dvh - 88px); padding: 24px; }
  .hero__inner { padding-top: 48px; padding-bottom: 32px; }
  .hero__art { inset: auto 0 190px; height: 320px; opacity: 1; }
  .hero__art img { object-position: 70% center; }
  .hero__eyebrow { font-size: 14px; margin-bottom: 24px; gap: 8px; }
  .hero__sound-icon { width: 20px; gap: 2px; }
  .hero__lead { margin-top: 24px; }
  .hero__links { display: grid; gap: 24px; margin-top: 32px; justify-items: start; }
  .hero__links .button { width: 100%; }
  .hero__phone { padding-left: 24px; }
  .hero__proofs { position: relative; grid-template-columns: 1fr; gap: 16px; margin-top: 320px; padding-top: 24px; }
  .hero__proof { flex-direction: row; gap: 12px; max-width: none; }
  .hero__proof > svg { width: 24px; height: 24px; }
  .noise__grid { grid-template-columns: 1fr; gap: 12px; }
  .noise__tile, .noise__tile--wide, .noise__tile:last-child { grid-column: auto; min-height: 224px; padding: 24px 24px 48px; }
  .noise__wave { margin-bottom: 16px; height: 48px; }
  .noise__tile h3 { font-size: 20px; }
  .noise__tile p { font-size: 16px; }
  .noise__surfaces { gap: 8px; margin-top: 24px; }
  .noise__surfaces a { padding: 8px 16px; min-height: 44px; }
  .physics__intro { margin-bottom: 32px; }
  .physics__diagrams { grid-template-columns: 1fr; gap: 16px; }
  .physics__diagram { max-width: 400px; margin-inline: auto; }
  .physics__figure { width: 100%; }
  .physics__image { aspect-ratio: 4/5; }
  .prices__grid { grid-template-columns: 1fr; gap: 16px; }
  .prices__heading h3 { font-size: 21px; }
  .prices__amount { margin-top: 24px; }
  .prices__amount strong { font-size: 40px; }
  .prices__amount span:last-child { flex-basis: auto; }
  .prices__card ul { font-size: 16px; }
  .calculator { grid-template-columns: 1fr; gap: 24px; padding: 24px; }
  .calculator__result { font-size: 28px; padding-top: 0; white-space: normal; overflow-wrap: anywhere; }
  .calculator__button { grid-column: auto; width: 100%; gap: 12px; padding-inline: 16px; }
  input, select { font-size: 16px; }
  .report__inner { padding-block: 80px; gap: 48px; }
  .report__scarf { margin-bottom: 24px; }
  .report__lead { margin-top: 24px; }
  .report__points { margin-top: 32px; }
  .report__points p { font-size: 16px; }
  .report__points li { gap: 12px; }
  .report__phone-wrap { max-width: 352px; padding-block: 0; }
  .report__phone { width: 100%; border-width: 6px; border-radius: 40px; }
  .report__feed { height: 560px; padding: 12px 8px 24px; }
  .report__message { padding: 12px; }
  .report__messenger-header { padding: 12px; gap: 8px; }
  .report__messenger-header strong { font-size: 16px; }
  .report__phone-wrap::before, .report__phone-wrap::after { display: none; }
  .comparison__heading { display: block; margin-bottom: 32px; }
  .comparison__heading p { margin-top: 16px; }
  .comparison__frame { aspect-ratio: 3/4; }
  .comparison__before img, .comparison__after { object-position: 56% center; }
  .comparison__label { bottom: 16px; padding: 8px 12px; }
  .comparison__label--before { left: 16px; }
  .comparison__label--after { right: 16px; }
  .comparison__handle { width: 80px; height: 48px; }
  .comparison__handle svg { width: 56px; }
  .process__steps { margin-top: 32px; }
  .process__steps li { padding-left: 96px; }
  .process__steps p { font-size: 16px; margin-top: 8px; }
  .reviews__heading { display: block; margin-bottom: 32px; }
  .reviews__rating { margin-top: 24px; }
  .reviews__rating strong { font-size: 36px; }
  .reviews__card { padding: 24px; }
  .reviews__card blockquote { font-size: 16px; }
  .reviews__link { font-size: 14px; gap: 12px; }
  .faq summary { font-size: 17px; gap: 16px; }
  .faq details p { font-size: 17px; margin-right: 0; }
  .audiences { gap: 16px; }
  .audiences__card { padding: 32px 24px; }
  .audiences__card h2 { font-size: 28px; }
  .audiences__card p { font-size: 16px; margin-top: 16px; }
  .audiences__card .text-link { font-size: 14px; gap: 12px; }
  .request { gap: 48px; padding-bottom: 96px; }
  .request h2 { margin-bottom: 32px; }
  .request__form { grid-template-columns: 1fr; gap: 24px; }
  .request__submit { width: 100%; gap: 12px; padding-inline: 16px; }
  .request__after { font-size: 16px; }
  .request__figure { width: 100%; }
  .request__image { aspect-ratio: 4/5; }
  .request__success { font-size: 24px; }
  .footer { padding-block: 48px 24px; }
  .footer__inner { grid-template-columns: 1fr; gap: 32px; }
  .footer__brand { width: 128px; }
  .footer__address { max-width: 340px; }
  .footer__phone { font-size: 24px; }
  .footer__nav { grid-column: auto; grid-template-columns: 1fr 1fr; gap: 16px 24px; }
  .footer__line { margin-top: 32px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .noise__tile:hover, .noise__tile:focus-visible, .button:hover { transform: none; }
}

/* Правки после проверки на телефоне, 29.10 */
@media (max-width: 899px) {
  .hero__links { margin-bottom: 32px; }
  .report__background { opacity: .2; -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 70%); mask-image: linear-gradient(180deg, transparent 0%, #000 70%); }
}

/* Уведомление о cookie: внизу экрана, пока посетитель не выбрал «Принять» или «Отказаться». */
.cookie { position: fixed; left: 16px; right: 16px; bottom: 16px; z-index: 50; display: flex; align-items: center; gap: 24px; max-width: 960px; margin: 0 auto; padding: 20px 24px; border-radius: var(--radius); background: var(--ink); color: var(--paper); box-shadow: var(--shadow); }
.cookie[hidden] { display: none; }
.cookie p { flex: 1; font-size: 15px; line-height: 1.5; }
.cookie a { color: var(--paper); text-decoration: underline; text-underline-offset: 3px; }
.cookie__buttons { display: flex; align-items: center; gap: 16px; flex-shrink: 0; }
.cookie .cookie__yes { min-height: 48px; padding: 12px 24px; }
.cookie__no { padding: 12px 8px; border: 0; background: none; color: var(--light-muted); font: inherit; font-size: 15px; text-decoration: underline; text-underline-offset: 3px; cursor: pointer; }
.footer__cookie { display: block; margin-top: 16px; padding: 0; border: 0; background: none; color: inherit; font: inherit; font-size: 14px; text-decoration: underline; text-underline-offset: 3px; opacity: .7; cursor: pointer; }
@media (max-width: 599px) {
  .cookie { flex-direction: column; align-items: stretch; gap: 16px; padding: 16px 20px; }
  .cookie__buttons { justify-content: space-between; }
}