:root {
            --ak-red: #d71920;
            --ak-red-dark: #b8141a;
            --ak-black: #111111;
            --ak-body: #1d1d1d;
            --ak-gray-text: #4a4a4a;
            --ak-gray-line: #d7d7d7;
            --ak-page: #e9e9e9;
            --ak-panel: #f7f7f7;
            --ak-footer: #2a2d3a;
            --ak-white: #ffffff;
        }

        * {
            box-sizing: border-box;
        }

        html {
            font-size: 18px;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: Arial, Helvetica, sans-serif;
            background: var(--ak-page);
            color: var(--ak-body);
            line-height: 1.5;
            overflow-x: hidden;
        }

        a {
            color: var(--ak-red);
            text-decoration: underline;
        }

        .page-top-line {
            height: 1px;
            background: #c6c6c6;
            width: calc(100% - 24px);
            margin: 8px auto 0;
        }

        .site-header {
            background: var(--ak-white);
            margin-top: 10px;
        }

        .site-header-inner {
            max-width: 1420px;
            margin: 0 auto;
            min-height: 92px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 140px;
            padding: 18px 28px 14px;
        }

        .brand,
        .header-title {
            display: flex;
            align-items: center;
        }

        .brand {
            gap: 16px;
        }

        .brand-logo {
            color: var(--ak-red);
            font-size: 3.45rem;
            font-weight: 800;
            letter-spacing: -0.12em;
            font-style: italic;
            line-height: 0.9;
            position: relative;
            top: -2px;
        }

        .brand-text {
            color: #4b4b4b;
            font-size: 1rem;
            line-height: 1.08;
            text-transform: uppercase;
            letter-spacing: 0.02em;
        }

        .header-title {
            flex-direction: column;
            align-items: flex-start;
            line-height: 1.08;
        }

        .header-title-main {
            color: var(--ak-red);
            font-size: 1.1rem;
            font-weight: 700;
        }

        .header-title-sub {
            color: var(--ak-black);
            font-size: 0.88rem;
            font-weight: 700;
            margin-top: 2px;
        }

        .header-auth {
            margin-left: auto;
            display: flex;
            flex-direction: column;
            align-items: flex-end;
            gap: 8px;
            text-align: right;
        }

        .header-auth-user {
            font-size: 0.92rem;
            color: var(--ak-black);
            max-width: 320px;
        }

        .header-auth-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 42px;
            padding: 0 18px;
            border-radius: 4px;
            background: var(--ak-red);
            color: #ffffff !important;
            text-decoration: none;
            font-weight: 700;
        }

        .header-auth-link:hover {
            background: var(--ak-red-dark);
            text-decoration: none;
        }

        .texture-bar {
            height: 42px;
            background:
                radial-gradient(circle at 15% 40%, rgba(0,0,0,0.02) 0 1px, transparent 2px),
                radial-gradient(circle at 45% 65%, rgba(0,0,0,0.015) 0 1px, transparent 2px),
                radial-gradient(circle at 75% 30%, rgba(0,0,0,0.02) 0 1px, transparent 2px),
                linear-gradient(#f4f4f4, #efefef);
            background-size: 22px 22px, 19px 19px, 24px 24px, auto;
            border-top: 1px solid #f2f2f2;
            border-bottom: 1px solid #e5e5e5;
        }

        .page-wrap {
            max-width: 1420px;
            margin: 0 auto;
            padding: 28px 28px 44px;
        }

        .intro-panel,
        .calc-panel,
        .details-panel {
            background:
                radial-gradient(circle at 12% 28%, rgba(0,0,0,0.02) 0 1px, transparent 2px),
                radial-gradient(circle at 55% 72%, rgba(0,0,0,0.015) 0 1px, transparent 2px),
                linear-gradient(#f8f8f8, #f4f4f4);
            border: 1px solid #ebebeb;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
        }

        .intro-panel {
            width: 100%;
            margin: 0;
            padding: 26px 34px 30px;
        }

        .intro-eyebrow,
        .section-eyebrow {
            color: var(--ak-black);
            font-weight: 700;
            text-transform: uppercase;
            font-size: 0.95rem;
            letter-spacing: 0.01em;
        }

        .intro-title,
        .section-title,
        .result-title {
            color: var(--ak-red);
            font-weight: 400;
        }

        .intro-title {
            font-size: 1.7rem;
            margin: 24px 0 22px;
        }

        .intro-panel p {
            font-size: 1.08rem;
            color: var(--ak-black);
            margin: 0 0 20px;
            max-width: 760px;
        }

        .layout {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
            width: 100%;
            align-items: start;
        }

        .calc-panel,
        .details-panel {
            padding: 28px 30px 32px;
        }

        .section-eyebrow {
            margin-bottom: 18px;
        }

        .section-title {
            font-size: 1.8rem;
            margin: 0 0 20px;
        }

        .group + .group {
            margin-top: 28px;
            padding-top: 24px;
            border-top: 1px solid var(--ak-gray-line);
        }

        .group-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin: 0 0 8px;
            color: var(--ak-black);
        }

        .group-text {
            font-size: 1rem;
            color: var(--ak-gray-text);
            margin: 0 0 16px;
        }

        .form-grid {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 20px 24px;
        }

        .full-width {
            grid-column: 1 / -1;
        }

        label {
            display: block;
            font-weight: 700;
            font-size: 0.98rem;
            margin-bottom: 8px;
            color: var(--ak-black);
        }

        .hint {
            font-size: 0.9rem;
            color: #666666;
            margin-top: 6px;
        }

        input[type="text"],
        select {
            width: 100%;
            border: 1px solid #bcbcbc;
            background: #fff;
            color: var(--ak-black);
            font-size: 1rem;
            padding: 12px 14px;
            min-height: 48px;
            border-radius: 4px;
            outline: none;
        }

        input[type="text"]:focus,
        select:focus {
            border-color: var(--ak-red);
            box-shadow: 0 0 0 2px rgba(215, 25, 32, 0.12);
        }

        .radio-row {
            display: flex;
            flex-wrap: wrap;
            gap: 22px;
            align-items: center;
            padding-top: 4px;
        }

        .radio-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 400;
            margin-bottom: 0;
        }

        input[type="radio"] {
            accent-color: var(--ak-red);
            transform: scale(1.1);
        }

        .button-row {
            margin-top: 30px;
            display: flex;
            align-items: center;
            gap: 18px;
            flex-wrap: wrap;
        }

        .btn {
            border: none;
            background: var(--ak-red);
            color: #fff;
            padding: 14px 28px;
            font-size: 1rem;
            font-weight: 700;
            border-radius: 4px;
            cursor: pointer;
            transition: background 0.15s ease, transform 0.15s ease;
        }

        .btn:hover {
            background: var(--ak-red-dark);
            transform: translateY(-1px);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            border: 1px solid var(--ak-red);
            background: #ffffff;
            color: var(--ak-red);
        }

        .btn-secondary:hover {
            background: #fff4f4;
            color: var(--ak-red-dark);
            border-color: var(--ak-red-dark);
        }

        .result-action-row {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            align-items: center;
            margin-top: 18px;
        }

        .result-box {
            background: #fafafa;
            border: 1px solid #dedede;
            border-radius: 6px;
            padding: 22px 22px;
            margin-bottom: 24px;
        }

        .result-title {
            font-size: 1.55rem;
            margin: 0 0 14px;
        }

        .result-lead {
            margin: 0 0 16px;
            color: var(--ak-black);
            font-size: 1rem;
        }

        .result-summary-grid {
            display: grid;
            grid-template-columns: repeat(4, minmax(0, 1fr));
            gap: 14px;
        }

        .summary-card {
            background: #ffffff;
            border: 1px solid #e0e0e0;
            border-radius: 6px;
            padding: 16px;
            min-width: 0;
        }

        .summary-label {
            font-size: 0.9rem;
            color: #666666;
            margin-bottom: 10px;
        }

        .summary-value {
            font-size: 1.42rem;
            font-weight: 700;
            color: var(--ak-black);
            line-height: 1.2;
            word-break: break-word;
        }

        .summary-subtext {
            margin-top: 10px;
            font-size: 0.85rem;
            color: #666666;
        }

        .details-grid {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 20px;
        }

        .detail-panel-box {
            background: #fff;
            border: 1px solid #e3e3e3;
            border-radius: 6px;
            padding: 16px;
            min-width: 0;
        }

        .detail-list {
            display: grid;
            gap: 12px;
        }

        .detail-item {
            border: 1px solid #e3e3e3;
            background: #fafafa;
            border-radius: 4px;
            padding: 12px 14px;
            min-width: 0;
        }

        .detail-item-strong {
            background: #f3f3f3;
            font-weight: 700;
        }

        .detail-label {
            display: block;
            font-size: 0.88rem;
            color: #666666;
            margin-bottom: 8px;
            line-height: 1.35;
            word-break: break-word;
            overflow-wrap: anywhere;
        }

        .detail-value {
            display: block;
            font-size: 1rem;
            color: var(--ak-black);
            line-height: 1.4;
            word-break: break-word;
            overflow-wrap: anywhere;
        }

        .income-cards {
            display: grid;
            gap: 14px;
        }

        .income-card {
            border: 1px solid #e3e3e3;
            background: #fafafa;
            border-radius: 4px;
            padding: 14px;
            min-width: 0;
        }

        .income-card-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--ak-black);
            margin-bottom: 2px;
        }

        .income-card-subtitle {
            font-size: 0.9rem;
            color: #666666;
            margin-bottom: 12px;
        }

        .income-card-values {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: 12px;
        }

        .income-card-value {
            min-width: 0;
        }

        .income-card-label {
            display: block;
            font-size: 0.86rem;
            color: #666666;
            margin-bottom: 6px;
            line-height: 1.35;
            word-break: break-word;
            overflow-wrap: anywhere;
        }

        .income-card-number {
            display: block;
            font-size: 0.98rem;
            color: var(--ak-black);
            line-height: 1.4;
            word-break: break-word;
            overflow-wrap: anywhere;
        }

        .site-footer {
            background: var(--ak-footer);
            color: #ffffff;
            padding: 48px 20px 46px;
            text-align: center;
        }

        .site-footer-inner {
            max-width: 1420px;
            margin: 0 auto;
        }

        .footer-line {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
            align-items: center;
        }

        .footer-links a {
            color: #ffffff;
            text-decoration: none;
            font-weight: 700;
        }

        .footer-links a:hover {
            text-decoration: underline;
        }

        @media (max-width: 1100px) {
            .site-header-inner {
                gap: 56px;
                justify-content: space-between;
            }

            .result-summary-grid,
            .details-grid,
            .form-grid,
            .income-card-values {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 860px) {
            html {
                font-size: 17px;
            }

            .site-header-inner {
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
                padding-left: 16px;
                padding-right: 16px;
            }

            .header-auth {
                margin-left: 0;
                width: 100%;
                align-items: stretch;
                text-align: left;
            }

            .header-auth-link {
                width: 100%;
            }

            .page-wrap {
                padding: 20px 12px 32px;
            }

            .intro-panel,
            .calc-panel,
            .details-panel {
                padding: 20px 18px;
            }

            .result-summary-grid,
            .details-grid,
            .form-grid,
            .income-card-values {
                grid-template-columns: 1fr;
            }

            .button-row .btn,
            .result-action-row .btn {
                width: 100%;
            }
        }