/* guide: utility chrome — dark head, action tiles, vertical day line */
:root {
    --night: #212121;
    --mint: #81C784;
    --snow: #FAFAFA;
    --stone: #424242;
    --forest: #1B5E20;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--snow);
    color: var(--stone);
    font-family: "Trebuchet MS", "PingFang SC", "Microsoft YaHei", sans-serif;
    line-height: 1.75;
}

.head {
    background: var(--night);
    color: #f5f5f5;
    padding: 0 0 32px;
}

.head-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 16px 28px;
    border-bottom: 1px solid #333;
}

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

nav {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 18px;
}

nav a {
    color: var(--mint);
    text-decoration: none;
    font-size: 13px;
}

nav a:hover,
nav a:focus {
    color: #fff;
}

.hero {
    width: min(880px, calc(100% - 40px));
    margin: 28px auto 0;
}

.hero h1,
.panel h2 {
    margin: 0 0 14px;
    line-height: 1.35;
    color: inherit;
}

.panel h2 {
    color: var(--night);
}

.hero p,
.act p,
.panel p,
.qa p,
.limits p,
.trim p,
.day p {
    margin: 0 0 12px;
}

.when {
    color: #9e9e9e;
    font-size: 13px;
}

.acts {
    width: min(1100px, calc(100% - 32px));
    margin: -20px auto 20px;
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 10px;
    position: relative;
}

.act {
    background: #fff;
    border: 1px solid #e0e0e0;
    padding: 18px 16px 10px;
    box-shadow: 0 8px 0 #e8e8e8;
}

.act h2,
.act h3 {
    margin: 8px 0 10px;
    font-size: 16px;
    color: var(--night);
}

.act:first-child h2 {
    font-size: 20px;
}

.panel {
    width: min(1100px, calc(100% - 32px));
    margin: 0 auto 20px;
    background: #fff;
    padding: 24px 28px 16px;
    border-left: 8px solid var(--mint);
}

.panel-kicker {
    margin: 0 0 12px;
    font-size: 15px;
    color: var(--forest);
}

.trim {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 8px;
    background: var(--night);
    color: #eee;
}

.trim li {
    padding: 16px 16px 8px;
}

.trim span {
    display: block;
    color: var(--mint);
    font-size: 12px;
    letter-spacing: 0.14em;
    margin-bottom: 8px;
}

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

th,
td {
    border: 1px solid #e0e0e0;
    padding: 10px;
    text-align: left;
    vertical-align: top;
}

th {
    background: var(--forest);
    color: #fff;
}

td:first-child {
    font-weight: 700;
    background: #f1f8f2;
}

.limits {
    list-style: none;
    margin: 8px 0 0;
    padding: 0;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 10px;
}

.limits li {
    display: flex;
    gap: 10px;
    background: var(--snow);
    padding: 10px;
}

.day {
    list-style: none;
    margin: 12px 0 0;
    padding: 0 0 0 18px;
    border-left: 3px solid var(--mint);
}

.day li {
    position: relative;
    padding: 0 0 16px 20px;
}

.day li::before {
    content: "";
    position: absolute;
    left: -25px;
    top: 6px;
    width: 11px;
    height: 11px;
    background: var(--forest);
    border-radius: 50%;
}

.day h3,
.qa h3 {
    margin: 0 0 8px;
    font-size: 17px;
    color: var(--night);
}

.qa {
    padding: 12px 0 6px;
    border-bottom: 1px solid #eee;
}

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

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

@media (max-width: 900px) {
    .acts,
    .trim,
    .limits {
        grid-template-columns: 1fr;
    }

    .acts {
        margin-top: 16px;
    }
}