*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --sre-deep: #12463f;
    --sre-mid: #1f6b5c;
    --sre-copper: #c2683a;
    --sre-text: #122120;
    --sre-faded: #5b716c;
    --sre-border: #dbe7e2;
    --sre-paper: #fbfdfc;
    --sre-tint: #eaf3ef;
    --sre-card: #ffffff;
    --sre-dark: #0b1a17;
    --sre-type-ui: "Trebuchet MS", "Segoe UI", sans-serif;
    --sre-type-head: Georgia, Cambria, "Times New Roman", serif;
    --sre-round-s: 10px;
    --sre-round-m: 16px;
    --sre-round-l: 26px;
    --sre-lift-1: 0 8px 22px rgba(18, 33, 32, .08);
    --sre-lift-2: 0 16px 40px rgba(18, 33, 32, .13);
    --sre-lift-3: 0 26px 60px rgba(11, 26, 23, .18);
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--sre-type-head);
    background:
        radial-gradient(circle at top left, rgba(31, 107, 92, .12), transparent 30%),
        linear-gradient(180deg, #fbfdfc 0%, #eaf3ef 100%);
    color: var(--sre-text);
    line-height: 1.74;
    font-size: 16px;
}

a {
    color: var(--sre-deep);
    text-decoration: none;
    transition: color .2s ease;
}
a:hover { color: var(--sre-copper); }

.sre-bar {
    position: sticky;
    top: 0;
    z-index: 20;
    padding: 18px 20px;
    background: rgba(251, 253, 252, .9);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(18, 70, 63, .16);
}
.sre-bar__hold {
    max-width: 1160px;
    margin: 0 auto;
    text-align: center;
}
.sre-bar__logo {
    font-family: var(--sre-type-ui);
    font-size: 21px;
    letter-spacing: .2em;
    text-transform: uppercase;
    font-weight: 900;
    color: var(--sre-deep);
}

.sre-open {
    padding: 74px 20px 46px;
    text-align: center;
}
.sre-open__tag {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 8px;
    background: var(--sre-deep);
    color: #eef5f1;
    font-family: var(--sre-type-ui);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: .18em;
    text-transform: uppercase;
    margin-bottom: 18px;
}
.sre-open__title {
    max-width: 820px;
    margin: 0 auto 14px;
    font-size: clamp(29px, 5vw, 52px);
    line-height: 1.1;
    color: var(--sre-deep);
}
.sre-open__sub {
    max-width: 640px;
    margin: 0 auto;
    color: var(--sre-faded);
    font-size: 17px;
    line-height: 1.78;
}

.sre-wrap {
    max-width: 980px;
    margin: 0 auto;
    padding: 0 20px 84px;
}
.sre-doc {
    background: var(--sre-card);
    border: 1px solid var(--sre-border);
    border-radius: var(--sre-round-l);
    box-shadow: var(--sre-lift-2);
    padding: 50px 54px;
}
@media (max-width: 740px) {
    .sre-doc { padding: 28px 20px; border-radius: 18px; }
    .sre-open { padding-top: 56px; }
}

.sre-doc h2 {
    position: relative;
    padding-left: 18px;
    font-size: clamp(21px, 3vw, 30px);
    line-height: 1.2;
    color: var(--sre-deep);
    margin: 36px 0 14px;
}
.sre-doc h2::before {
    content: "";
    position: absolute;
    left: 0;
    top: .28em;
    bottom: .28em;
    width: 4px;
    border-radius: 2px;
    background: linear-gradient(180deg, var(--sre-copper), var(--sre-mid));
}
.sre-doc h2:first-child { margin-top: 0; }
.sre-doc h3 {
    font-size: 19px;
    line-height: 1.3;
    color: var(--sre-text);
    margin: 24px 0 10px;
}
.sre-doc p {
    color: var(--sre-faded);
    margin-bottom: 15px;
}
.sre-doc ul,
.sre-doc ol {
    padding-left: 20px;
    margin: 0 0 16px;
    color: var(--sre-faded);
}
.sre-doc li { margin-bottom: 7px; }
.sre-doc strong { color: var(--sre-text); }

.sre-brief {
    margin: 0 0 30px;
    padding: 20px 22px;
    border-radius: var(--sre-round-m);
    background: var(--sre-tint);
    border: 1px solid var(--sre-border);
}
.sre-brief__label {
    display: block;
    font-family: var(--sre-type-ui);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--sre-mid);
    margin-bottom: 8px;
}
.sre-brief ul { margin: 0; padding-left: 18px; }
.sre-brief li { color: var(--sre-faded); font-size: 15px; }

.sre-flag {
    margin: 26px 0;
    padding: 20px 22px 20px 26px;
    border-radius: 0 var(--sre-round-m) var(--sre-round-m) 0;
    background: #f6f1ec;
    border-left: 4px solid var(--sre-copper);
}
.sre-flag p { margin: 0; color: var(--sre-text); }

.sre-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 16px;
    margin: 26px 0;
}
.sre-card {
    background: var(--sre-tint);
    border: 1px solid var(--sre-border);
    border-radius: var(--sre-round-m);
    padding: 22px 20px;
}
.sre-card__name {
    font-family: var(--sre-type-ui);
    font-size: 15px;
    font-weight: 900;
    color: var(--sre-deep);
    margin-bottom: 6px;
}
.sre-card__body {
    font-size: 14px;
    line-height: 1.68;
    color: var(--sre-faded);
}

.sre-grid {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0 26px;
    overflow: hidden;
    border-radius: 14px;
    box-shadow: var(--sre-lift-1);
    background: var(--sre-card);
}
.sre-grid th {
    background: linear-gradient(135deg, var(--sre-deep), var(--sre-mid));
    color: #fff;
    text-align: left;
    padding: 14px 16px;
    font-family: var(--sre-type-ui);
    font-size: 14px;
    letter-spacing: .02em;
}
.sre-grid td {
    padding: 13px 16px;
    border-bottom: 1px solid var(--sre-border);
    color: var(--sre-faded);
}
.sre-grid tr:nth-child(even) td { background: #f4f8f6; }
.sre-grid tr:last-child td { border-bottom: none; }

.sre-flow {
    margin: 26px 0;
    display: grid;
    gap: 14px;
}
.sre-flow__item {
    display: grid;
    grid-template-columns: 44px 1fr;
    gap: 16px;
    align-items: start;
    padding: 18px 20px;
    background: var(--sre-tint);
    border: 1px solid var(--sre-border);
    border-radius: var(--sre-round-m);
}
.sre-flow__idx {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    font-family: var(--sre-type-ui);
    font-size: 17px;
    font-weight: 900;
    color: #fff;
    background: linear-gradient(140deg, var(--sre-mid), var(--sre-deep));
}
.sre-flow__name {
    font-family: var(--sre-type-ui);
    font-size: 15px;
    font-weight: 900;
    color: var(--sre-text);
    margin-bottom: 4px;
}
.sre-flow__body {
    font-size: 15px;
    color: var(--sre-faded);
}

.sre-defs {
    margin: 24px 0 26px;
    display: grid;
    gap: 0;
    border: 1px solid var(--sre-border);
    border-radius: var(--sre-round-m);
    overflow: hidden;
}
.sre-defs__key {
    padding: 13px 18px;
    background: var(--sre-tint);
    font-family: var(--sre-type-ui);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: var(--sre-deep);
    border-bottom: 1px solid var(--sre-border);
}
.sre-defs__val {
    padding: 15px 18px;
    color: var(--sre-faded);
    font-size: 15px;
    border-bottom: 1px solid var(--sre-border);
}
.sre-defs__val:last-child { border-bottom: none; }

.sre-base {
    margin-top: 40px;
    background: var(--sre-tint);
    color: var(--sre-faded);
    padding: 20px 20px 16px;
    font-family: var(--sre-type-ui);
    text-align: center;
    border-top: 1px solid var(--sre-border);
}
.sre-base__hold {
    max-width: 900px;
    margin: 0 auto;
}
.sre-base__nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px 20px;
    margin-bottom: 10px;
}
.sre-base__nav a {
    color: var(--sre-mid);
    font-size: 11px;
}
.sre-base__nav a:hover { color: var(--sre-copper); }
.sre-base__copy {
    font-size: 11px;
    color: var(--sre-faded);
}