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

:root {
    --ix-deep: #1e4436;
    --ix-leaf: #2f7a58;
    --ix-gold: #d4a017;
    --ix-gold-dk: #b3860f;
    --ix-ink: #12261e;
    --ix-mute: #4d6b5c;
    --ix-line: #cfe2d5;
    --ix-paper: #f5faf6;
    --ix-tint: #e6f1e9;
    --ix-card: #ffffff;
    --ix-sans: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --ix-serif: Georgia, "Iowan Old Style", "Times New Roman", serif;
    --ix-r1: 4px;
    --ix-r2: 10px;
    --ix-sh1: 0 6px 18px rgba(18, 38, 30, .07);
    --ix-sh2: 0 14px 34px rgba(18, 38, 30, .10);
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--ix-serif);
    background: linear-gradient(180deg, #f5faf6 0%, #e6f1e9 100%);
    background-attachment: fixed;
    color: var(--ix-ink);
    line-height: 1.74;
    font-size: 16px;
}

a { color: var(--ix-leaf); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--ix-gold-dk); }

/* ---------- header ---------- */
.ix-hd {
    padding: 20px 18px;
    background: var(--ix-deep);
    border-bottom: 4px solid var(--ix-gold);
}
.ix-hd-in { max-width: 1100px; margin: 0 auto; text-align: center; }
.ix-hd-nm {
    font-family: var(--ix-sans);
    font-size: 22px;
    font-weight: 800;
    letter-spacing: .28em;
    text-transform: uppercase;
    color: #f3f8f4;
}
.ix-hd-nm:hover { color: var(--ix-gold); }

/* ---------- page lead ---------- */
.ix-doc-top {
    padding: 62px 20px 42px;
    text-align: center;
}
.ix-doc-tag {
    display: inline-block;
    padding: 5px 15px 6px;
    margin-bottom: 16px;
    border: 2px solid var(--ix-gold);
    border-radius: var(--ix-r1);
    font-family: var(--ix-sans);
    font-size: 11.5px;
    font-weight: 800;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--ix-deep);
}
.ix-doc-h1 {
    max-width: 820px;
    margin: 0 auto 14px;
    font-size: clamp(27px, 4.6vw, 46px);
    line-height: 1.18;
    color: var(--ix-deep);
}
.ix-doc-sub {
    max-width: 660px;
    margin: 0 auto;
    color: var(--ix-mute);
    font-size: 17px;
    line-height: 1.8;
}
.ix-doc-date {
    max-width: 900px;
    margin: 22px auto 0;
    padding: 0 20px;
    font-family: var(--ix-sans);
    font-size: 13px;
    letter-spacing: .04em;
    color: var(--ix-leaf);
}

/* ---------- vertical timeline ---------- */
.ix-tl {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding: 10px 20px 84px 62px;
}
.ix-tl::before {
    content: "";
    position: absolute;
    left: 21px;
    top: 0;
    bottom: 84px;
    width: 3px;
    border-radius: 2px;
    background: linear-gradient(180deg, var(--ix-gold) 0%, var(--ix-leaf) 22%, var(--ix-leaf) 78%, var(--ix-line) 100%);
}

.ix-doc-sec {
    position: relative;
    margin-bottom: 26px;
    padding: 22px 26px 20px;
    background: var(--ix-card);
    border: 1px solid var(--ix-line);
    border-left: 3px solid var(--ix-leaf);
    border-radius: var(--ix-r2);
    box-shadow: var(--ix-sh1);
}
.ix-doc-sec::before {
    content: "";
    position: absolute;
    left: -51px;
    top: 27px;
    width: 17px;
    height: 17px;
    border-radius: 50%;
    background: var(--ix-gold);
    border: 3px solid var(--ix-deep);
    box-shadow: 0 0 0 4px var(--ix-paper);
}
.ix-doc-sec:last-child { margin-bottom: 0; }

.ix-sec-h {
    font-size: clamp(20px, 2.8vw, 27px);
    line-height: 1.24;
    color: var(--ix-deep);
    margin: 0 0 12px;
}
.ix-sec-n {
    display: inline-block;
    margin-right: 9px;
    font-family: var(--ix-sans);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .1em;
    color: var(--ix-gold-dk);
    vertical-align: middle;
}
.ix-doc-sec h3 {
    font-family: var(--ix-sans);
    font-size: 17px;
    line-height: 1.34;
    color: var(--ix-ink);
    margin: 20px 0 9px;
}
.ix-doc-sec p { color: var(--ix-mute); margin-bottom: 14px; }
.ix-doc-sec p:last-child { margin-bottom: 0; }
.ix-doc-sec ul,
.ix-doc-sec ol { padding-left: 20px; margin: 0 0 15px; color: var(--ix-mute); }
.ix-doc-sec li { margin-bottom: 7px; }
.ix-doc-sec li::marker { color: var(--ix-gold-dk); }
.ix-doc-sec strong { color: var(--ix-ink); }

/* ---------- callout ---------- */
.ix-note {
    margin: 20px 0;
    padding: 18px 20px;
    background: #fdf6e4;
    border: 1px solid rgba(212, 160, 23, .45);
    border-left: 5px solid var(--ix-gold);
    border-radius: var(--ix-r1);
}
.ix-note p { margin: 0; color: var(--ix-ink); font-size: 15px; }

/* ---------- cards ---------- */
.ix-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 14px;
    margin: 20px 0;
}
.ix-card {
    padding: 18px 17px 16px;
    background: var(--ix-tint);
    border: 1px solid var(--ix-line);
    border-top: 3px solid var(--ix-gold);
    border-radius: var(--ix-r1);
}
.ix-card-h {
    font-family: var(--ix-sans);
    font-size: 14.5px;
    font-weight: 800;
    color: var(--ix-deep);
    margin-bottom: 5px;
}
.ix-card-tx {
    font-size: 14px;
    line-height: 1.66;
    color: var(--ix-mute);
}

/* ---------- table ---------- */
.ix-tab {
    width: 100%;
    border-collapse: collapse;
    margin: 18px 0 22px;
    border: 2px solid var(--ix-deep);
    border-radius: var(--ix-r1);
    overflow: hidden;
    font-size: 15px;
}
.ix-tab th {
    background: var(--ix-deep);
    color: #f6e2ad;
    text-align: left;
    padding: 12px 15px;
    font-family: var(--ix-sans);
    font-size: 13.5px;
    letter-spacing: .03em;
}
.ix-tab td {
    padding: 12px 15px;
    border-bottom: 1px solid var(--ix-line);
    color: var(--ix-mute);
    background: #fff;
}
.ix-tab tr:nth-child(even) td { background: var(--ix-paper); }
.ix-tab tr:last-child td { border-bottom: none; }
.ix-tab-wrap { overflow-x: auto; }

/* ---------- ordered steps ---------- */
.ix-flow { margin: 20px 0; display: grid; gap: 12px; }
.ix-step {
    display: grid;
    grid-template-columns: 42px 1fr;
    gap: 14px;
    align-items: start;
    padding: 15px 16px;
    background: var(--ix-paper);
    border: 1px solid var(--ix-line);
    border-radius: var(--ix-r1);
}
.ix-step-n {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    border: 2px solid var(--ix-deep);
    border-radius: var(--ix-r1);
    background: var(--ix-gold);
    font-family: var(--ix-sans);
    font-size: 17px;
    font-weight: 800;
    color: var(--ix-ink);
}
.ix-step-h {
    font-family: var(--ix-sans);
    font-size: 14.5px;
    font-weight: 800;
    color: var(--ix-deep);
    margin-bottom: 3px;
}
.ix-step-tx { font-size: 14.5px; color: var(--ix-mute); line-height: 1.64; }

/* ---------- footer ---------- */
.ix-ft {
    margin-top: 10px;
    background: var(--ix-deep);
    border-top: 4px solid var(--ix-gold);
    padding: 26px 20px 22px;
    text-align: center;
    font-family: var(--ix-sans);
}
.ix-ft-in { max-width: 900px; margin: 0 auto; }
.ix-ft-nm {
    font-size: 14px;
    font-weight: 800;
    letter-spacing: .26em;
    text-transform: uppercase;
    color: var(--ix-gold);
    margin-bottom: 12px;
}
.ix-ft-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px 22px;
    margin-bottom: 14px;
}
.ix-ft-nav a {
    color: #bcd5c5;
    font-size: 12px;
    border-bottom: 1px solid rgba(212, 160, 23, .40);
    padding-bottom: 2px;
}
.ix-ft-nav a:hover { color: var(--ix-gold); }
.ix-ft-cp { font-size: 11.5px; color: #9dbaa7; margin-bottom: 10px; }
.ix-ft-dc {
    max-width: 780px;
    margin: 0 auto;
    font-size: 11px;
    line-height: 1.7;
    color: #86a692;
}

/* ---------- mobile ---------- */
@media (max-width: 740px) {
    body { font-size: 15.5px; }
    .ix-doc-top { padding: 44px 16px 30px; }
    .ix-doc-sub { font-size: 15.5px; }
    .ix-doc-date { padding: 0 16px; }
    .ix-tl { padding: 8px 14px 60px 38px; }
    .ix-tl::before { left: 10px; bottom: 60px; width: 3px; }
    .ix-doc-sec { padding: 18px 16px 16px; margin-bottom: 20px; }
    .ix-doc-sec::before { left: -36px; top: 22px; width: 13px; height: 13px; border-width: 3px; box-shadow: 0 0 0 3px var(--ix-paper); }
    .ix-step { grid-template-columns: 36px 1fr; gap: 11px; }
    .ix-step-n { width: 36px; height: 36px; font-size: 15px; }
}