:root {
    --instruction-accent: #ff4b1f;
    --instruction-accent-dark: #d94318;
    --instruction-bg: #f6f5f2;
    --instruction-text: #171717;
    --instruction-muted: rgba(23, 23, 23, 0.68);
    --instruction-line: #e7e2dc;
    --instruction-soft: #fbfaf8;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 92px;
}

body {
    margin: 0;
    background: #fff;
    color: var(--instruction-text);
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.55;
}

a {
    color: var(--instruction-accent-dark);
    text-decoration: none;
}

a:hover {
    color: var(--instruction-accent);
}

.instruction-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: #000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.instruction-header__inner {
    width: min(1180px, calc(100% - 32px));
    min-height: 64px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.instruction-header__logo {
    display: inline-flex;
    align-items: center;
}

.instruction-header__logo img {
    display: block;
    width: 130px;
    max-width: 130px;
    height: auto;
}

.instruction-header__nav {
    display: flex;
    align-items: center;
    gap: 22px;
    color: #fff;
    font-size: 15px;
    font-weight: 500;
}

.instruction-header__nav a {
    color: rgba(255, 255, 255, 0.84);
}

.instruction-header__nav a:hover {
    color: #fff;
}

.instruction-header__cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    padding: 0 18px;
    border-radius: 999px;
    background: linear-gradient(135deg, #ff4b1f, #ff6a3d);
    color: #fff !important;
    font-weight: 700;
    box-shadow: 0 10px 28px rgba(255, 75, 31, 0.28);
}

.instruction-shell {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
}

.instruction-hero {
    padding: 92px 0 58px;
    background:
        radial-gradient(circle at 18% 10%, rgba(255, 75, 31, 0.16), transparent 34%),
        linear-gradient(180deg, #111 0%, #1a1614 100%);
    color: #fff;
}

.instruction-eyebrow {
    margin: 0 0 14px;
    color: #ffb199;
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.instruction-hero h1 {
    max-width: 860px;
    margin: 0;
    font-size: clamp(34px, 5vw, 58px);
    line-height: 1.06;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.instruction-lead {
    max-width: 760px;
    margin: 22px 0 0;
    color: rgba(255, 255, 255, 0.78);
    font-size: clamp(18px, 2.2vw, 22px);
    line-height: 1.45;
}

.instruction-layout {
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
    padding: 48px 0 72px;
}

.instruction-toc {
    position: sticky;
    top: 92px;
    padding: 22px;
    border: 1px solid var(--instruction-line);
    border-radius: 22px;
    background: var(--instruction-soft);
}

.instruction-toc h2 {
    margin: 0 0 14px;
    font-size: 17px;
    line-height: 1.3;
}

.instruction-toc a {
    display: block;
    padding: 8px 0;
    color: var(--instruction-muted);
    font-size: 14px;
    line-height: 1.35;
}

.instruction-toc a:hover {
    color: var(--instruction-accent-dark);
}

.instruction-content {
    min-width: 0;
    max-width: 820px;
}

.instruction-section {
    padding: 32px 0;
    border-bottom: 1px solid var(--instruction-line);
}

.instruction-section:first-child {
    padding-top: 0;
}

.instruction-section h2 {
    margin: 0 0 20px;
    font-size: clamp(26px, 3vw, 36px);
    line-height: 1.15;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.instruction-section h3 {
    margin: 30px 0 14px;
    font-size: 22px;
    line-height: 1.25;
    font-weight: 700;
}

.instruction-content p,
.instruction-content li {
    color: rgba(23, 23, 23, 0.78);
    font-size: 18px;
    line-height: 1.65;
}

.instruction-content p {
    margin: 0 0 18px;
}

.instruction-content ol,
.instruction-content ul {
    margin: 0 0 22px;
    padding-left: 26px;
}

.instruction-content li + li {
    margin-top: 8px;
}

.instruction-inline-details {
    display: inline;
    margin: 0;
    border: 0;
    background: transparent;
}

.instruction-inline-details summary {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 0;
    color: #424b57;
    font-size: inherit;
    font-weight: 600;
    cursor: pointer;
    list-style: none;
    text-decoration: none;
}

.instruction-inline-details summary:hover,
.instruction-inline-details summary:focus-visible {
    color: var(--instruction-accent-dark);
    outline: none;
}

.instruction-inline-details summary::-webkit-details-marker {
    display: none;
}

.instruction-inline-details summary::after {
    content: "▾";
    display: inline-block;
    background: transparent;
    color: #7a838f;
    font-size: 0.82em;
    line-height: 1;
    transform: translateY(-1px);
}

.instruction-inline-details[open] summary {
    border-bottom: 0;
}

.instruction-inline-details[open] summary::after {
    content: "▴";
    background: transparent;
    color: #7a838f;
}

.instruction-inline-details p,
.instruction-inline-details ol,
.instruction-inline-details ul {
    display: block;
    margin: 10px 0 12px;
    border: 1px solid #d8dde3;
    border-radius: 12px;
    background: #fff;
    overflow: hidden;
}

.instruction-inline-details p {
    padding: 12px 16px;
}

.instruction-inline-details ol,
.instruction-inline-details ul {
    padding: 12px 16px 14px 28px;
}

.instruction-inline-details li {
    margin: 6px 0;
    line-height: 1.55;
}

.instruction-inline-details blockquote {
    margin: 0;
    padding: 0;
    border-left: 0 !important;
    background: transparent !important;
}

.instruction-wifi-icon {
    display: inline;
    margin: 0 1px;
    vertical-align: baseline;
    color: var(--instruction-accent-dark);
    font-size: 0.92em;
    line-height: 1;
}

.instruction-wifi-icon .fa-solid {
    font-size: 1em;
    line-height: 1;
}

.instruction-video-accordion {
    display: grid;
    gap: 14px;
    margin: 6px 0 0;
}

.instruction-video-item {
    border: 1px solid var(--instruction-line);
    border-radius: 18px;
    background: #fff;
    overflow: hidden;
    box-shadow: 0 12px 32px rgba(17, 17, 17, 0.04);
}

.instruction-video-item summary {
    min-height: 58px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 0 20px;
    color: var(--instruction-accent);
    font-size: 17px;
    font-weight: 700;
    cursor: pointer;
    list-style: none;
}

.instruction-video-item summary::-webkit-details-marker {
    display: none;
}

.instruction-video-item summary::after {
    content: "+";
    width: 30px;
    height: 30px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    border-radius: 50%;
    background: transparent;
    color: var(--instruction-accent);
    font-size: 22px;
    line-height: 1;
}

.instruction-video-item[open] summary {
    border-bottom: 1px solid var(--instruction-line);
}

.instruction-video-item[open] summary::after {
    content: "−";
    background: transparent;
    color: var(--instruction-accent);
}

.instruction-video-panel {
    padding: 0;
    background: #111;
}

.instruction-faq-spoiler {
    margin: 18px 0 24px;
    border: 1px solid var(--instruction-line);
    border-radius: 18px;
    background: #fff;
    overflow: hidden;
    box-shadow: 0 12px 32px rgba(17, 17, 17, 0.04);
}

.instruction-faq-spoiler summary {
    min-height: 58px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 32px;
    align-items: center;
    gap: 14px;
    padding: 16px 20px;
    color: var(--instruction-text);
    font: 700 18px/1.35 Arial, Helvetica, sans-serif;
    cursor: pointer;
    list-style: none;
}

.instruction-faq-spoiler summary::-webkit-details-marker {
    display: none;
}

.instruction-faq-spoiler summary::after {
    content: "+";
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 75, 31, 0.1);
    color: var(--instruction-accent-dark);
    line-height: 1;
    transition: transform 0.2s ease, background 0.2s ease;
}

.instruction-faq-spoiler summary:hover,
.instruction-faq-spoiler summary:focus-visible {
    color: var(--instruction-accent-dark);
    outline: none;
}

.instruction-faq-spoiler[open] summary {
    border-bottom: 1px solid var(--instruction-line);
}

.instruction-faq-spoiler[open] summary::after {
    content: "−";
    transform: rotate(180deg);
    background: var(--instruction-accent);
    color: #fff;
}

.instruction-faq-spoiler__content {
    padding: 18px 20px 20px;
    color: rgba(23, 23, 23, 0.78);
}

.instruction-faq-spoiler__content p {
    margin: 0 0 12px;
}

.instruction-faq-spoiler__content ol {
    margin: 0;
    padding-left: 26px;
}

.instruction-faq-spoiler__content li {
    margin: 8px 0;
    line-height: 1.55;
}

.instruction-faq-spoiler__content .instruction-figure {
    margin-top: 14px;
}

.instruction-video-panel--inline {
    margin-top: 12px;
    border-radius: 18px;
}

.instruction-video-panel video {
    display: block;
    width: 100%;
    max-height: 70vh;
    border-radius: 0;
    background: #000;
}

.instruction-video-alt {
    min-height: 58px;
    margin: 0;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.instruction-video-alt a {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 0 14px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 999px;
    color: rgba(255, 255, 255, 0.86);
    font-size: 14px;
    line-height: 1;
    text-decoration: none;
    transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.instruction-video-alt a:hover,
.instruction-video-alt a:focus-visible {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.38);
    color: #fff;
}

.instruction-note {
    margin: 22px 0;
    padding: 18px 20px;
    border: 1px solid rgba(255, 75, 31, 0.2);
    border-left: 4px solid var(--instruction-accent);
    border-radius: 18px;
    background: #fff7f5;
    color: rgba(23, 23, 23, 0.78);
    font-size: 17px;
    line-height: 1.6;
}

.instruction-note ul,
.instruction-note ol {
    margin: 10px 0 0;
}

.instruction-figure {
    margin: 26px 0;
    padding: 12px;
    border: 1px solid var(--instruction-line);
    border-radius: 22px;
    background: #fff;
    box-shadow: 0 16px 44px rgba(17, 17, 17, 0.06);
}

.instruction-figure img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 14px;
}

.instruction-figure figcaption {
    margin-top: 10px;
    color: var(--instruction-muted);
    font-size: 13px;
    text-align: center;
}

.instruction-help {
    margin-top: 36px;
    padding: 30px;
    border-radius: 24px;
    background:
        radial-gradient(circle at 100% 0%, rgba(255, 75, 31, 0.16), transparent 28%),
        #111;
    color: #fff;
}

.instruction-help h2 {
    margin: 0 0 12px;
    font-size: 30px;
    line-height: 1.2;
}

.instruction-help p {
    max-width: 620px;
    margin: 0;
    color: rgba(255, 255, 255, 0.76);
    font-size: 17px;
}

.instruction-help__links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 22px;
}

.instruction-help__links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 20px;
    border-radius: 999px;
    background: #fff;
    color: #111;
    font-weight: 700;
}

.instruction-help__links a:first-child {
    background: linear-gradient(135deg, #ff4b1f, #ff6a3d);
    color: #fff;
}

@media (max-width: 900px) {
    html {
        scroll-padding-top: 78px;
    }

    .instruction-header__inner {
        min-height: 58px;
    }

    .instruction-header__nav a:not(.instruction-header__cta) {
        display: none;
    }

    .instruction-layout {
        grid-template-columns: 1fr;
        gap: 28px;
        padding-top: 32px;
    }

    .instruction-toc {
        position: static;
    }

    .instruction-content {
        max-width: none;
    }
}

@media (max-width: 640px) {
    .instruction-shell,
    .instruction-header__inner {
        width: min(100% - 24px, 1180px);
    }

    .instruction-hero {
        padding: 76px 0 42px;
    }

    .instruction-header__logo img {
        width: 118px;
    }

    .instruction-header__cta {
        min-height: 36px;
        padding: 0 14px;
        font-size: 13px;
    }

    .instruction-section {
        padding: 28px 0;
    }

    .instruction-content p,
    .instruction-content li {
        font-size: 16px;
    }

    .instruction-figure {
        margin-left: -4px;
        margin-right: -4px;
        padding: 8px;
        border-radius: 18px;
    }

    .instruction-help {
        padding: 24px;
    }
}