/* portal: duel arena — short hero, 50/50 lanes, score table */
:root {
    --slate: #455A64;
    --teal: #26A69A;
    --mist: #ECEFF1;
    --ink: #263238;
    --sea: #00897B;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--mist);
    color: var(--ink);
    font-family: "Helvetica Neue", Arial, "Microsoft YaHei", sans-serif;
    line-height: 1.7;
}

.bar {
    background: var(--slate);
    color: #fff;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px 24px;
    padding: 12px 28px;
}

.brand {
    margin: 0;
    font-weight: 700;
    font-size: 18px;
}

nav {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

nav a {
    color: #cfd8dc;
    text-decoration: none;
    font-size: 13px;
}

nav a:hover,
nav a:focus {
    color: var(--teal);
}

.hero {
    width: min(720px, calc(100% - 40px));
    margin: 20px auto 8px;
    padding: 8px 0 4px;
}

.hero h1 {
    margin: 0 0 12px;
    font-size: 28px;
    line-height: 1.35;
}

.hero p,
.lane p,
.block p,
.qa p,
.signals p,
.roles p {
    margin: 0 0 12px;
}

.date {
    font-size: 13px;
    color: var(--slate);
}

.duel {
    width: min(1100px, calc(100% - 32px));
    margin: 12px auto 28px;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 0;
    background: #fff;
    border: 1px solid #cfd8dc;
}

.lane {
    padding: 28px 24px 16px;
}

.lane-app {
    background: #f4f7f8;
}

.versus {
    margin: 0;
    writing-mode: vertical-rl;
    background: var(--teal);
    color: #fff;
    letter-spacing: 0.2em;
    padding: 16px 8px;
    text-align: center;
    font-size: 13px;
}

.lane h2,
.block h2 {
    margin: 10px 0 12px;
    font-size: 20px;
    color: var(--ink);
}

.lane h3,
.signals h3,
.roles h3,
.qa h3 {
    margin: 8px 0 8px;
    font-size: 17px;
}

.block {
    width: min(1100px, calc(100% - 32px));
    margin: 0 auto 24px;
    background: #fff;
    padding: 24px 28px 16px;
}

.score {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    margin: 8px 0 12px;
}

.score th,
.score td {
    border: 1px solid #cfd8dc;
    padding: 10px 12px;
    vertical-align: top;
    text-align: left;
}

.score th {
    background: var(--slate);
    color: #fff;
}

.score td:first-child {
    background: #e0f2f1;
    font-weight: 700;
    width: 18%;
}

.signals {
    list-style: none;
    margin: 0;
    padding: 0;
}

.signals li {
    border-left: 6px solid var(--sea);
    padding: 4px 0 4px 16px;
    margin-bottom: 12px;
    background: #f7fbfb;
}

.roles {
    list-style: none;
    margin: 12px 0 0;
    padding: 0;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 12px;
}

.roles li {
    border-top: 3px solid var(--teal);
    padding: 12px 12px 4px;
    background: var(--mist);
}

.path {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0;
}

.path li {
    flex: 1 1 200px;
    display: flex;
    gap: 10px;
    padding: 12px 16px 4px 0;
    border-top: 4px solid var(--teal);
}

.path span {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    background: var(--ink);
    color: #fff;
    text-align: center;
    line-height: 28px;
    font-size: 14px;
}

.pick-title {
    margin: 0 0 12px;
    font-size: 18px;
}

.qa-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.qa {
    background: var(--mist);
    padding: 12px 14px 6px;
}

.foot {
    background: var(--ink);
    color: #b0bec5;
    text-align: center;
    padding: 24px 16px 32px;
}

.foot p {
    margin: 0 0 8px;
    font-size: 14px;
}

@media (max-width: 860px) {
    .duel,
    .roles,
    .qa-grid {
        grid-template-columns: 1fr;
    }

    .versus {
        writing-mode: horizontal-tb;
        padding: 8px;
        letter-spacing: 0.12em;
    }
}