:root { --ink: #171b16; --soft: #61675f; --green: #d7fb78; --deep: #386319; --line: #dde1d8; }
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; color: var(--ink); background: #fff; font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", sans-serif; line-height: 1.65; }
main { max-width: 1060px; margin: auto; padding: 0 44px; }
h1, h2, h3, p { margin: 0; }
a { color: inherit; }
button { font: inherit; }
:focus-visible { outline: 3px solid var(--deep); outline-offset: 5px; }
.skip { position: absolute; top: -100px; left: 16px; padding: 12px; background: var(--green); }
.skip:focus { top: 12px; }
header { display: flex; align-items: center; justify-content: space-between; padding: 28px 0; border-bottom: 1px solid var(--line); gap: 20px; }
.brand { display: inline-flex; align-items: center; gap: 8px; font-size: 20px; font-weight: 850; text-decoration: none; }
.brand img { object-fit: contain; }
.back { font-size: 13px; text-decoration: none; }
.intro { padding: 68px 0 52px; }
.eyebrow { font-size: 11px; letter-spacing: .14em; font-weight: 750; color: var(--deep); }
h1 { font-size: clamp(44px, 6.3vw, 74px); letter-spacing: -.065em; line-height: 1.12; font-weight: 900; margin: 22px 0; word-break: keep-all; }
.lead { font-size: 20px; font-weight: 750; word-break: keep-all; max-width: 650px; }
.sub { color: var(--soft); font-size: 15px; margin-top: 12px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.start, .application { display: inline-flex; align-items: center; justify-content: space-between; gap: 26px; padding: 17px 23px; border-radius: 5px; border: 1px solid var(--ink); background: var(--ink); color: #fff; font-size: 16px; font-weight: 750; cursor: pointer; text-decoration: none; transition: background .18s, transform .18s; }
.start.team { background: var(--green); color: var(--ink); }
.start:hover, .application:hover { background: var(--deep); color: #fff; transform: translateY(-2px); }
.modules { border-top: 1px solid var(--line); padding: 48px 0; }
.section-title h2 { font-size: 30px; letter-spacing: -.05em; margin: 10px 0; }
.section-title > p:last-child { font-size: 14px; color: var(--soft); }
ol { padding: 0; margin: 30px 0 20px; list-style: none; }
li { display: grid; grid-template-columns: 45px 1fr auto; align-items: start; gap: 16px; padding: 22px 0; border-top: 1px solid var(--line); }
.number { font-size: 13px; font-weight: 750; color: var(--deep); padding-top: 6px; }
h3 { font-size: 20px; letter-spacing: -.03em; font-weight: 800; }
li p { font-size: 14px; color: var(--soft); margin-top: 4px; word-break: keep-all; }
.label { font-size: 11px; padding: 5px 10px; border: 1px solid var(--line); border-radius: 4px; white-space: nowrap; }
.experimental { background: #f4f5f0; }
.device-note { color: var(--soft); font-size: 12px; }
.invite { background: var(--green); padding: 30px; display: flex; align-items: center; justify-content: space-between; gap: 30px; border-radius: 6px; }
.invite h2 { font-size: 30px; line-height: 1.3; letter-spacing: -.05em; margin-top: 10px; }
footer { display: flex; align-items: center; justify-content: space-between; padding: 38px 0; font-size: 12px; color: var(--soft); }
@media (max-width: 600px) { main { padding: 0 22px; } header { padding: 22px 0; } .brand { font-size: 18px; } .back { font-size: 11px; } .intro { padding: 42px 0 36px; } .lead { font-size: 17px; } .start { padding: 14px 16px; font-size: 14px; gap: 18px; } .actions { gap: 8px; } li { grid-template-columns: 28px 1fr; gap: 10px; } .label { grid-column: 2; justify-self: start; } .invite { flex-direction: column; align-items: flex-start; padding: 24px; } .application { font-size: 14px; padding: 14px 18px; } }
@media (max-width: 359px) { main { padding: 0 16px; } .start { font-size: 13px; gap: 12px; padding-inline: 12px; } }
@media (prefers-reduced-motion: reduce) { .start, .application { transition: none; } }