/* Инструкция в стилистике концепта: тёмная студия, световая линия как навигация, фото на светлых карточках. */
.guide .nav.solid { background: rgba(7, 6, 5, .8); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); }
.g-main { padding-top: 120px; }
.g-back { display: inline-flex; align-items: center; gap: .5em; margin-left: 28px; padding: .7em 1.2em; border-radius: 99px; font-size: .85rem; color: var(--paper); border: 1px solid var(--rule); background: rgba(239, 233, 224, .04); transition: border-color .3s, background .3s; }
.g-back:hover { border-color: var(--line); background: rgba(var(--hz), .12); }
.g-back .arr { color: var(--line); transition: transform .4s var(--ease); }
.g-back:hover .arr { transform: translateX(-3px); }

/* шапка */
.g-hero { display: grid; grid-template-columns: auto 1fr; gap: clamp(24px, 4vw, 64px); align-items: end; padding-block: 6vh 10vh; }
.g-hero-line { position: relative; width: 3px; height: clamp(180px, 34vh, 340px); border-radius: 3px; background: rgba(239, 233, 224, .08); overflow: hidden; }
.g-hero-line i { position: absolute; inset: 0; background: linear-gradient(var(--ember-2), var(--line)); box-shadow: 0 0 22px var(--line); transform-origin: bottom; animation: g-rise 2.4s var(--ease) .3s both; }
@keyframes g-rise { from { transform: scaleY(0); } }
.g-hero-copy > * + * { margin-top: 22px; }
.g-hero h1 { max-width: 12ch; }
.g-quick { display: flex; flex-wrap: wrap; gap: 0; margin-top: 36px !important; border-top: 1px solid var(--rule); max-width: 560px; }
.g-quick div { flex: 1 1 140px; padding: 18px 18px 0 0; }
.g-quick dd { margin-top: 8px; font: 300 clamp(1.5rem, 1.2rem + 1vw, 2.1rem)/1 var(--f-mono); font-stretch: 75%; letter-spacing: -.03em; }

/* сетка: оглавление + контент */
.g-layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: clamp(32px, 6vw, 110px); align-items: start; }
.g-toc { position: sticky; top: 110px; }
.g-toc ol { margin-top: 18px; border-left: 1px solid var(--rule); }
.g-toc a { position: relative; display: block; padding: 7px 0 7px 18px; font-size: .92rem; color: var(--dim); transition: color .3s; }
.g-toc a::before { content: ""; position: absolute; left: -1px; top: 0; bottom: 0; width: 2px; background: var(--line); box-shadow: 0 0 12px var(--line); transform: scaleY(0); transition: transform .4s var(--ease); }
.g-toc a:hover { color: var(--paper); }
.g-toc a.on { color: var(--paper); }
.g-toc a.on::before { transform: none; }
.g-body { max-width: 900px; min-width: 0; }
.g-toc { min-width: 0; }

/* секции */
.g-sec { padding-block: 9vh; border-top: 1px solid var(--rule); scroll-margin-top: 90px; }
.g-sec:first-child { border-top: 0; padding-top: 0; }
.g-sec > .h2 { margin-top: 16px; margin-bottom: 34px; }
.g-sub { margin: 56px 0 24px; }
.g-note { margin-top: 26px; padding-left: 18px; border-left: 2px solid var(--rule); color: var(--mute); max-width: 62ch; }
.g-note a { color: var(--paper); text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--line); }
.g-warn { border-left-color: var(--line); color: var(--paper); }

/* фото производителя — на светлых карточках, как предмет на столе студии */
.g-fig { margin: 0; border-radius: 22px; overflow: hidden; background: #e8e6e2; box-shadow: 0 40px 100px -50px rgba(var(--hz), .5); }
.g-fig img { width: 100%; height: auto; }
.g-fig figcaption { padding: 12px 18px; font-size: .85rem; color: #4b4741; background: #e8e6e2; }
.g-legend { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2px 32px; margin-top: 26px; }
.g-legend li { display: flex; gap: 14px; align-items: baseline; padding: 11px 0; border-bottom: 1px solid var(--rule); }
.g-legend b { font: 400 .8rem/1 var(--f-mono); color: var(--line); width: 12px; flex: none; }

/* видео с главами */
.g-video { border-radius: 22px; overflow: hidden; background: #0d0b0a; box-shadow: 0 40px 100px -40px rgba(var(--hz), .45); }
.g-video video { width: 100%; aspect-ratio: 16 / 9; object-fit: contain; background: #0d0b0a; }
.g-chap-label { margin-top: 28px; }
.g-chapters { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; margin-top: 14px; }
.g-chapters button {
  width: 100%; display: flex; gap: 14px; align-items: center; padding: 13px 16px; border-radius: 14px; cursor: pointer; text-align: left;
  font: 400 .95rem/1.3 var(--f-text); color: var(--mute); background: rgba(239, 233, 224, .03); border: 1px solid var(--rule);
  transition: color .3s, border-color .3s, background .3s;
}
.g-chapters button span { font: 400 .75rem/1 var(--f-mono); color: var(--dim); }
.g-chapters button:hover, .g-chapters button.on { color: var(--paper); border-color: rgba(239, 233, 224, .35); }
.g-chapters button.on { background: rgba(var(--hz), .1); border-color: var(--line); }
.g-chapters button.on span { color: var(--line); }

/* шаги: фото + текст, номер как деление шкалы */
.g-steps { display: grid; gap: 18px; }
.g-step { display: grid; grid-template-columns: minmax(0, 300px) minmax(0, 1fr); gap: clamp(20px, 3vw, 40px); align-items: center; padding: 18px; border-radius: 26px; background: rgba(239, 233, 224, .025); border: 1px solid var(--rule); }
.g-step figure { margin: 0; border-radius: 16px; overflow: hidden; background: #e8e6e2; }
.g-step img { width: 100%; height: auto; }
.g-step h3 { margin-top: 0; font: 400 clamp(1.35rem, 1.1rem + .8vw, 1.8rem)/1.2 var(--f-display); }
.g-step p { margin-top: 12px; color: var(--mute); line-height: 1.7; max-width: 46ch; }
.g-num { font: 300 .85rem/1 var(--f-mono); color: var(--line); letter-spacing: .08em; }
.g-tag { display: inline-block; vertical-align: middle; margin-left: 8px; padding: .3em .7em; border-radius: 99px; font: 400 .72rem/1.2 var(--f-mono); color: var(--paper); background: rgba(var(--hz), .16); border: 1px solid rgba(var(--hz), .4); white-space: nowrap; }

/* кнопки */
.g-split { display: grid; grid-template-columns: minmax(0, 360px) minmax(0, 1fr); gap: clamp(24px, 4vw, 56px); align-items: start; }
.g-rows { border-top: 1px solid var(--rule); }
.g-rows div { display: grid; grid-template-columns: 42% 1fr; gap: 16px; padding: 15px 0; border-bottom: 1px solid var(--rule); }
.g-rows dt { color: var(--mute); }
kbd { display: inline-grid; place-items: center; min-width: 26px; height: 26px; padding: 0 6px; margin-right: 4px; border-radius: 8px; font: 400 .8rem/1 var(--f-mono); color: var(--paper); background: rgba(239, 233, 224, .08); border: 1px solid rgba(239, 233, 224, .22); box-shadow: inset 0 -2px 0 rgba(0, 0, 0, .35); }

/* режимы: карточки со световой полосой */
.g-modes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.g-mode { position: relative; padding: 26px 24px 28px 46px; border-radius: 24px; background: rgba(239, 233, 224, .025); border: 1px solid var(--rule); overflow: hidden; }
.g-mode::after { content: ""; position: absolute; inset: auto -30% -60% -30%; height: 90%; background: radial-gradient(50% 50% at 50% 50%, color-mix(in srgb, var(--c) 28%, transparent), transparent 70%); pointer-events: none; }
.g-bar { position: absolute; left: 22px; top: 28px; bottom: 28px; width: 3px; border-radius: 3px; background: linear-gradient(var(--c), color-mix(in srgb, var(--c) 40%, #fff)); box-shadow: 0 0 16px var(--c); }
.g-mode h3 { margin-top: 12px; font: 400 1.6rem/1.15 var(--f-display); }
.g-mode > p:last-child { margin-top: 12px; color: var(--mute); font-size: .95rem; line-height: 1.65; position: relative; z-index: 1; }

/* сигналы: живые индикаторы */
.g-signals { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.g-sig { padding: 20px 22px; border-radius: 20px; background: rgba(239, 233, 224, .025); border: 1px solid var(--rule); }
.g-sig p { color: var(--mute); font-size: .95rem; }
.g-sig .g-sig-h { display: flex; gap: 14px; align-items: center; color: var(--paper); font-size: 1.02rem; margin-bottom: 10px; }
.g-sig .g-do { margin-top: 6px; color: var(--paper); font-size: .92rem; }
.g-sig .g-do::before { content: "→ "; color: var(--line); }
.g-err { border-color: rgba(255, 38, 49, .3); }
.g-led { --c: var(--line); position: relative; flex: none; width: 6px; height: 30px; border-radius: 4px; background: rgba(239, 233, 224, .08); overflow: hidden; }
.g-led::after { content: ""; position: absolute; inset: 0; border-radius: 4px; background: var(--c); box-shadow: 0 0 10px var(--c); }
.g-fill::after { transform-origin: bottom; animation: g-fill 2.6s ease-in-out infinite; }
.g-breath::after { animation: g-breath 2.8s ease-in-out infinite; }
.g-blink::after { animation: g-blink 1.8s steps(1) infinite; }
.g-fast::after { animation: g-blink .35s steps(1) infinite; }
.g-double::after { animation: g-double 2s steps(1) infinite; }
.g-off::after { opacity: 0; }
@keyframes g-fill { 0% { transform: scaleY(0); } 80%, 100% { transform: scaleY(1); } }
@keyframes g-breath { 0%, 100% { opacity: .25; } 50% { opacity: 1; } }
@keyframes g-blink { 0% { opacity: 1; } 50% { opacity: 0; } }
@keyframes g-double { 0% { opacity: 1; } 12% { opacity: 0; } 24% { opacity: 1; } 36%, 100% { opacity: 0; } }

/* уход, безопасность */
.g-cols { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.g-col { padding: 24px 26px; border-radius: 22px; background: rgba(239, 233, 224, .025); border: 1px solid var(--rule); }
.g-col h3 { font: 400 1.4rem/1.2 var(--f-display); margin-bottom: 12px; }
.g-col li, .g-safety li { position: relative; padding: 10px 0 10px 22px; color: var(--mute); line-height: 1.6; }
.g-col li::before, .g-safety li::before { content: ""; position: absolute; left: 0; top: 1.15em; width: 8px; height: 2px; border-radius: 2px; background: var(--line); }
.g-safety { columns: 2; column-gap: 40px; }
.g-safety li { break-inside: avoid; border-bottom: 1px solid var(--rule); }
.g-plain { columns: 1; }

/* вопросы */
.g-faq { border-top: 1px solid var(--rule); }
.g-faq details { border-bottom: 1px solid var(--rule); }
.g-faq summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; gap: 20px; padding: 20px 0; font-size: 1.08rem; transition: color .3s; }
.g-faq summary::-webkit-details-marker { display: none; }
.g-faq summary::after { content: "+"; font: 300 1.4rem/1 var(--f-mono); color: var(--line); transition: transform .4s var(--ease); }
.g-faq details[open] summary::after { transform: rotate(45deg); }
.g-faq summary:hover { color: var(--line); }
.g-faq details p { padding: 0 0 22px; color: var(--mute); max-width: 64ch; line-height: 1.7; }

/* гарантия */
.g-facts { display: flex; gap: 14px; flex-wrap: wrap; }
.g-facts div { flex: 1 1 200px; padding: 26px; border-radius: 22px; background: rgba(239, 233, 224, .025); border: 1px solid var(--rule); }
.g-facts dd { font: 300 clamp(2.6rem, 1.8rem + 2.4vw, 4rem)/1 var(--f-mono); font-stretch: 75%; letter-spacing: -.04em; }
.g-facts dt { margin-top: 10px; }

/* поддержка */
.g-help .lead { margin-top: 0; }
.g-contacts { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 28px; margin-top: 30px; }
.g-link { color: var(--paper); border-bottom: 1px solid var(--line); padding-bottom: 2px; transition: color .3s; }
.g-link:hover { color: var(--line); }

/* телефон */
@media (max-width: 860px) {
  .g-main { padding-top: 76px; }
  .g-back { margin-left: 14px; padding: .6em 1em; }
  .guide .logo { letter-spacing: .3em; }
  .g-hero { grid-template-columns: 1fr; padding-block: 4vh 6vh; }
  .g-hero-line { width: 100%; height: 3px; }
  .g-hero-line i { background: linear-gradient(90deg, var(--ember-2), var(--line)); transform-origin: left; animation-name: g-rise-x; }
  @keyframes g-rise-x { from { transform: scaleX(0); } }
  .g-layout { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .g-toc { position: sticky; top: 56px; z-index: 5; margin: 0 calc(var(--gutter) * -1); padding: 10px var(--gutter); background: rgba(7, 6, 5, .86); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); }
  .g-toc > .label { display: none; }
  .g-toc ol { display: flex; gap: 6px; margin: 0; border: 0; overflow-x: auto; scrollbar-width: none; }
  .g-toc ol::-webkit-scrollbar { display: none; }
  .g-toc a { white-space: nowrap; padding: 7px 13px; border-radius: 99px; border: 1px solid var(--rule); font-size: .85rem; }
  .g-toc a::before { display: none; }
  .g-toc a.on { border-color: var(--line); background: rgba(var(--hz), .14); }
  .g-sec { padding-block: 56px; scroll-margin-top: 120px; }
  .g-sec:first-child { padding-top: 36px; }
  .g-legend, .g-chapters, .g-signals, .g-cols, .g-modes { grid-template-columns: 1fr; }
  .g-step { grid-template-columns: 1fr; padding: 12px 12px 20px; }
  .g-step > div { padding: 0 8px; }
  .g-split { grid-template-columns: 1fr; }
  .g-rows div { grid-template-columns: 1fr; gap: 4px; }
  .g-safety { columns: 1; }
  .g-fig, .g-video { border-radius: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  .g-led::after, .g-hero-line i { animation: none !important; }
}

.guide .nav .ig { margin-left: 8px; }
@media (max-width: 860px) { .guide .nav .ig { margin-left: auto; } .guide .nav .btn-s { margin-left: 0; } }

.guide .nav > .lang { margin-left: 8px; }
@media (max-width: 860px) { .guide .nav > .lang { display: flex; margin-left: auto; } .guide .nav .ig { display: none; } .guide .nav .g-back { margin-left: 10px; } }

@media (max-width: 1240px) { .guide .nav nav { display: none; } .guide .nav > .lang { margin-left: auto; } }