:root {
            --background: #0d0f12;
            --background-soft: #15181d;
            --card: #191d23;
            --card-light: #20252c;
            --text: #f5f7fa;
            --text-secondary: #aeb6c2;
            --accent: #ffbf00;
            --accent-hover: #ffd24d;
            --success: #55d187;
            --border: rgba(255, 255, 255, 0.09);
            --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
            --radius-large: 28px;
            --radius-medium: 20px;
            --radius-small: 14px;
            --container-width: 1100px;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background:
                radial-gradient(
                    circle at 20% 0%,
                    rgba(255, 191, 0, 0.11),
                    transparent 35%
                ),
                radial-gradient(
                    circle at 100% 30%,
                    rgba(118, 89, 255, 0.08),
                    transparent 30%
                ),
                var(--background);
            color: var(--text);
            font-family:
                -apple-system,
                BlinkMacSystemFont,
                "Segoe UI",
                Roboto,
                Helvetica,
                Arial,
                sans-serif;
            line-height: 1.6;
        }

        img {
            display: block;
            width: 100%;
            height: auto;
            max-width: 100%;
        }

        a {
            color: inherit;
        }

        .container {
            width: min(
                calc(100% - 32px),
                var(--container-width)
            );
            margin: 0 auto;
        }

        .hero {
            padding: 72px 0 48px;
            text-align: center;
        }

        .hero__badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 22px;
            padding: 9px 15px;
            border: 1px solid rgba(255, 191, 0, 0.25);
            border-radius: 999px;
            background: rgba(255, 191, 0, 0.08);
            color: var(--accent);
            font-size: 14px;
            font-weight: 700;
        }

        .hero__title {
            max-width: 850px;
            margin: 0 auto 20px;
            font-size: clamp(38px, 7vw, 72px);
            line-height: 1.05;
            letter-spacing: -0.04em;
        }

        .hero__title span {
            color: var(--accent);
        }

        .hero__text {
            max-width: 720px;
            margin: 0 auto;
            color: var(--text-secondary);
            font-size: clamp(17px, 2.6vw, 21px);
        }

        .hero__actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
            margin-top: 34px;
        }

        .button {
            display: inline-flex;
            min-height: 54px;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 22px;
            border: 1px solid transparent;
            border-radius: 15px;
            font-size: 16px;
            font-weight: 750;
            text-decoration: none;
            transition:
                transform 0.2s ease,
                background-color 0.2s ease,
                border-color 0.2s ease;
        }

        .button:hover {
            transform: translateY(-2px);
        }

        .button--primary {
            background: var(--accent);
            color: #161616;
        }

        .button--primary:hover {
            background: var(--accent-hover);
        }

        .button--secondary {
            border-color: var(--border);
            background: rgba(255, 255, 255, 0.04);
            color: var(--text);
        }

        .notice {
            display: grid;
            grid-template-columns: auto 1fr;
            gap: 15px;
            margin: 26px 0 55px;
            padding: 20px;
            border: 1px solid rgba(255, 191, 0, 0.21);
            border-radius: var(--radius-medium);
            background: rgba(255, 191, 0, 0.07);
        }

        .notice__icon {
            font-size: 24px;
        }

        .notice__title {
            margin: 0 0 5px;
            font-size: 17px;
        }

        .notice__text {
            margin: 0;
            color: var(--text-secondary);
        }

        .section {
            padding: 34px 0 62px;
            scroll-margin-top: 20px;
        }

        .section__header {
            display: grid;
            grid-template-columns: auto 1fr;
            align-items: start;
            gap: 18px;
            margin-bottom: 26px;
        }

        .section__number {
            display: flex;
            width: 52px;
            height: 52px;
            align-items: center;
            justify-content: center;
            border-radius: 16px;
            background: var(--accent);
            color: #151515;
            font-size: 22px;
            font-weight: 900;
        }

        .section__title {
            margin: 0 0 7px;
            font-size: clamp(29px, 5vw, 46px);
            line-height: 1.12;
        }

        .section__description {
            margin: 0;
            color: var(--text-secondary);
            font-size: 17px;
        }

        .content-card {
            overflow: hidden;
            border: 1px solid var(--border);
            border-radius: var(--radius-large);
            background: linear-gradient(
                145deg,
                rgba(255, 255, 255, 0.035),
                rgba(255, 255, 255, 0.012)
            );
            box-shadow: var(--shadow);
        }

        .screenshot {
            padding: 16px;
            border-bottom: 1px solid var(--border);
            background: #101216;
        }

        .screenshot img {
            border-radius: 18px;
        }

        .content-card__body {
            padding: clamp(22px, 5vw, 38px);
        }

        .steps {
            display: grid;
            gap: 16px;
            margin: 0;
            padding: 0;
            list-style: none;
            counter-reset: instruction-step;
        }

        .step {
            display: grid;
            grid-template-columns: 42px 1fr;
            gap: 15px;
            align-items: start;
            counter-increment: instruction-step;
        }

        .step::before {
            display: flex;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(255, 191, 0, 0.24);
            border-radius: 13px;
            background: rgba(255, 191, 0, 0.09);
            color: var(--accent);
            content: counter(instruction-step);
            font-weight: 900;
        }

        .step__content {
            padding-top: 7px;
            color: var(--text-secondary);
            font-size: 17px;
        }

        .step__content strong {
            color: var(--text);
        }

        .steps--spaced {
            margin-top: 28px;
        }

        .info-box {
            margin-top: 26px;
            padding: 20px;
            border: 1px solid var(--border);
            border-radius: var(--radius-medium);
            background: var(--card-light);
        }

        .info-box--warning {
            border-color: rgba(255, 191, 0, 0.23);
            background: rgba(255, 191, 0, 0.07);
        }

        .info-box--success {
            border-color: rgba(85, 209, 135, 0.22);
            background: rgba(85, 209, 135, 0.07);
        }

        .info-box__title {
            margin: 0 0 8px;
            font-size: 18px;
        }

        .info-box__text {
            margin: 0;
            color: var(--text-secondary);
        }

        .key-example {
            margin-top: 22px;
            padding: 17px 19px;
            overflow: hidden;
            border: 1px solid var(--border);
            border-radius: var(--radius-small);
            background: #0b0d10;
        }

        .key-example code {
            display: block;
            overflow: hidden;
            color: var(--accent);
            font-family:
                "SFMono-Regular",
                Consolas,
                monospace;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .checklist {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin-top: 22px;
        }

        .checklist__item {
            padding: 19px;
            border: 1px solid var(--border);
            border-radius: var(--radius-medium);
            background: rgba(255, 255, 255, 0.025);
        }

        .checklist__icon {
            margin-bottom: 10px;
            font-size: 26px;
        }

        .checklist__title {
            margin: 0 0 6px;
            font-size: 16px;
        }

        .checklist__text {
            margin: 0;
            color: var(--text-secondary);
            font-size: 14px;
        }

        .finish {
            margin: 15px 0 70px;
            padding: clamp(28px, 6vw, 55px);
            border: 1px solid rgba(85, 209, 135, 0.19);
            border-radius: var(--radius-large);
            background:
                radial-gradient(
                    circle at 50% 0%,
                    rgba(85, 209, 135, 0.16),
                    transparent 55%
                ),
                var(--card);
            text-align: center;
        }

        .finish__icon {
            margin-bottom: 12px;
            font-size: 46px;
        }

        .finish__title {
            margin: 0 0 10px;
            font-size: clamp(29px, 5vw, 44px);
        }

        .finish__text {
            max-width: 650px;
            margin: 0 auto;
            color: var(--text-secondary);
            font-size: 17px;
        }

        .footer {
            padding: 25px 0 38px;
            border-top: 1px solid var(--border);
            color: var(--text-secondary);
            text-align: center;
        }

        .footer strong {
            color: var(--text);
        }

        @media (max-width: 760px) {
            .hero {
                padding-top: 48px;
            }

            .hero__actions {
                display: grid;
            }

            .button {
                width: 100%;
            }

            .checklist {
                grid-template-columns: 1fr;
            }

            .section__header {
                grid-template-columns: 1fr;
            }

            .screenshot {
                padding: 8px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            html {
                scroll-behavior: auto;
            }

            *,
            *::before,
            *::after {
                scroll-behavior: auto !important;
                transition-duration: 0.01ms !important;
            }
        }