:root {
            --ud-red: #CE1141;
            --ud-blue: #004B8D;
            --ud-navy: #002D62;
            --ink: #18212B;
            --muted: #5C6977;
            --surface: #FFFFFF;
            --canvas: #F3F6F9;
        }

        .stApp {
            background:
                radial-gradient(circle at 95% 3%, rgba(206,17,65,.08), transparent 25rem),
                var(--canvas);
            color: var(--ink);
        }

        [data-testid="stHeader"] { background: rgba(243,246,249,.88); }
        [data-testid="stSidebar"] {
            background: linear-gradient(180deg, var(--ud-navy) 0%, #001F45 100%);
        }
        [data-testid="stSidebar"] * { color: white; }
        [data-testid="stSidebar"] [data-testid="stMarkdownContainer"] p { color: white; }
        [data-testid="stSidebar"] .stRadio label {
            background: rgba(255,255,255,.06);
            border: 1px solid rgba(255,255,255,.12);
            border-radius: .7rem;
            padding: .4rem .55rem;
            margin-bottom: .25rem;
        }
        [data-testid="stSidebar"] .stRadio label:hover {
            background: rgba(255,255,255,.12);
        }
        [data-testid="stSidebar"] div.stButton > button {
            color: var(--ud-navy) !important;
            background: white;
            border-color: white;
        }
        [data-testid="stSidebar"] div.stButton > button * {
            color: var(--ud-navy) !important;
        }
        [data-testid="stSidebar"] div.stButton {
            margin-top: 1.35rem;
        }

        .block-container {
            max-width: 1180px;
            padding-top: 2rem;
            padding-bottom: 4rem;
        }

        h1, h2, h3 { color: var(--ud-navy); letter-spacing: -.025em; }
        h2 { margin-top: 1.2rem !important; }

        .hero {
            position: relative;
            overflow: hidden;
            padding: 2.4rem 2.5rem;
            border-radius: 1.25rem;
            color: white;
            background:
                linear-gradient(112deg, rgba(0,45,98,.98) 0%, rgba(0,75,141,.96) 62%, rgba(206,17,65,.96) 130%);
            box-shadow: 0 18px 42px rgba(0,45,98,.16);
            margin-bottom: 1.6rem;
        }
        .hero::after {
            content: "";
            position: absolute;
            width: 20rem;
            height: 20rem;
            border: 2px solid rgba(255,255,255,.14);
            border-radius: 50%;
            right: -5rem;
            top: -11rem;
        }
        .hero-kicker {
            display: inline-block;
            font-size: .78rem;
            font-weight: 800;
            letter-spacing: .13em;
            text-transform: uppercase;
            margin-bottom: .75rem;
            color: #fff;
        }
        .hero h1 { color: white; font-size: clamp(2.15rem, 5vw, 4rem); margin: 0; }
        .hero p { color: rgba(255,255,255,.88); font-size: 1.08rem; max-width: 48rem; margin: .65rem 0 0; }
        .section-lead { color: var(--muted); font-size: 1.02rem; max-width: 52rem; margin-top: -.45rem; }
        .eyebrow {
            color: var(--ud-red);
            font-size: .78rem;
            font-weight: 850;
            letter-spacing: .12em;
            text-transform: uppercase;
            margin-bottom: .25rem;
        }

        .info-card, .event-card, .statement-card, .stakeholder-card {
            background: var(--surface);
            border: 1px solid #DCE3EA;
            border-radius: 1rem;
            box-shadow: 0 8px 22px rgba(20,42,66,.06);
        }
        .overview-note {
            margin: .7rem 0 1rem;
            padding: .8rem 1rem;
            border-radius: .8rem;
            background: #EAF2F8;
            border-left: 4px solid var(--ud-blue);
            color: var(--ud-navy);
        }
        .info-card {
            padding: 1.15rem 1.2rem;
            min-height: 9.3rem;
            background: #F9FBFD;
            border-style: dashed;
            box-shadow: none;
        }
        .info-card .number {
            width: 2rem;
            height: 2rem;
            display: grid;
            place-items: center;
            border-radius: .6rem;
            background: var(--ud-red);
            color: white;
            font-weight: 850;
            margin-bottom: .75rem;
        }
        .info-card h3 { margin: 0 0 .35rem; font-size: 1.05rem; }
        .info-card p { color: var(--muted); margin: 0; font-size: .92rem; line-height: 1.45; }

        .event-card { padding: 1rem 1.1rem; margin: .55rem 0 .2rem; border-left: 5px solid var(--ud-blue); }
        .event-card h4 { color: var(--ud-navy); margin: 0 0 .2rem; font-size: 1rem; }
        .event-card p { color: var(--muted); margin: 0; line-height: 1.42; }
        .event-amount { color: var(--ud-blue); font-weight: 850; white-space: nowrap; }

        .choice-snapshot {
            background: #EAF2F8;
            border: 1px solid #C5D9EA;
            border-radius: .85rem;
            padding: .8rem 1rem;
            color: var(--ud-navy);
            font-weight: 650;
            margin-bottom: 1rem;
        }

        .activity-lane {
            border-radius: 1rem;
            padding: 1rem 1.05rem;
            min-height: 8.4rem;
            background: white;
            border-top: 5px solid var(--lane-color);
            box-shadow: 0 8px 22px rgba(20,42,66,.06);
        }
        .activity-lane h3 { margin: 0 0 .35rem; font-size: 1.05rem; }
        .activity-lane p { margin: 0; color: var(--muted); font-size: .9rem; line-height: 1.42; }

        .equation {
            display: grid;
            grid-template-columns: 1fr auto 1fr auto 1fr;
            align-items: center;
            gap: .85rem;
            background: linear-gradient(135deg, var(--ud-navy), var(--ud-blue));
            color: white;
            border-radius: 1rem;
            padding: 1.15rem 1.35rem;
            box-shadow: 0 12px 26px rgba(0,45,98,.14);
            margin: .75rem 0 1.25rem;
        }
        .equation .term { text-align: center; }
        .equation .label { font-size: .75rem; text-transform: uppercase; letter-spacing: .1em; opacity: .76; }
        .equation .value { font-size: 1.45rem; font-weight: 850; }
        .equation .operator { font-size: 1.55rem; opacity: .72; }

        .statement-card { padding: 1.25rem 1.35rem; margin-top: .8rem; }
        .statement-heading { text-align: center; padding-bottom: .75rem; border-bottom: 2px solid var(--ud-navy); }
        .statement-heading h3 { margin: 0; }
        .statement-heading p { margin: .2rem 0 0; color: var(--muted); font-size: .86rem; }
        .statement-row { display: flex; justify-content: space-between; gap: 1rem; padding: .38rem .2rem; }
        .statement-row.indent { padding-left: 1.25rem; color: var(--muted); }
        .statement-row.total { border-top: 1px solid #AEBAC5; font-weight: 800; color: var(--ud-navy); margin-top: .25rem; }
        .statement-row.grand-total { border-top: 3px double var(--ud-navy); font-weight: 900; color: var(--ud-navy); }
        .answer-feedback {
            color: var(--ink);
            font-size: 1rem;
            line-height: 1.55;
            margin: .75rem 0;
        }
        .answer-feedback strong { color: var(--ink); }

        .flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: .7rem;
            align-items: stretch;
            margin: 1rem 0;
        }
        .flow-step {
            position: relative;
            background: white;
            border: 1px solid #DCE3EA;
            border-radius: .9rem;
            padding: 1rem;
            text-align: center;
        }
        .flow-step:not(:last-child)::after {
            content: "→";
            position: absolute;
            right: -.72rem;
            top: 42%;
            width: .75rem;
            color: var(--ud-red);
            font-weight: 900;
            z-index: 2;
        }
        .flow-step strong { color: var(--ud-navy); display: block; margin-bottom: .3rem; }
        .flow-step span { color: var(--muted); font-size: .84rem; line-height: 1.35; }

        .stakeholder-card { padding: 1.2rem 1.25rem; border-top: 5px solid var(--ud-red); min-height: 13rem; }
        .stakeholder-card h3 { margin-top: 0; }
        .stakeholder-card .question { color: var(--ud-navy); font-weight: 750; font-size: 1.04rem; }
        .stakeholder-card .evidence { color: var(--muted); font-size: .92rem; }

        .sidebar-brand {
            border-bottom: 1px solid rgba(255,255,255,.18);
            padding: .4rem 0 1rem;
            margin-bottom: 1rem;
        }
        .sidebar-brand .context { font-size: .72rem; text-transform: uppercase; letter-spacing: .13em; opacity: .75; }
        .sidebar-brand .name { font-size: 1.18rem; font-weight: 850; margin-top: .2rem; }
        .sidebar-progress { margin: 1.2rem 0 .5rem; font-size: .82rem; opacity: .8; }
        .progress-track { height: .42rem; background: rgba(255,255,255,.15); border-radius: 99px; overflow: hidden; }
        .progress-fill { height: 100%; background: var(--ud-red); border-radius: 99px; }

        div.stButton > button, div.stFormSubmitButton > button {
            border-radius: .7rem;
            font-weight: 760;
            min-height: 2.65rem;
        }
        div.stButton > button[kind="primary"], div.stFormSubmitButton > button[kind="primary"] {
            background: var(--ud-red);
            border-color: var(--ud-red);
        }
        div[data-testid="stMetric"] {
            background: white;
            border: 1px solid #DCE3EA;
            border-radius: .9rem;
            padding: .8rem 1rem;
            box-shadow: 0 6px 18px rgba(20,42,66,.05);
        }

        @media (max-width: 760px) {
            .hero { padding: 1.6rem 1.4rem; }
            .equation { grid-template-columns: 1fr; gap: .35rem; }
            .equation .operator { transform: rotate(90deg); line-height: .8; }
            .flow { grid-template-columns: 1fr; }
            .flow-step:not(:last-child)::after { content: "↓"; right: 49%; top: auto; bottom: -.75rem; }
        }