:root { color-scheme: light; --page: #f7f7f9; --surface: #fff; --ink: #1b1c1f; --muted: #545961; --line: #d7d9df; --accent: #2f6fed; --danger: #a6202b; --radius: 16px; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--page); color: var(--ink); font: 16px/1.65 -apple-system, BlinkMacSystemFont, 'Pretendard', 'Apple SD Gothic Neo', 'Noto Sans KR', sans-serif; }
a { color: #2055bc; text-underline-offset: 3px; }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.site-header { min-height: 64px; padding: 12px max(20px, calc((100vw - 800px)/2)); background: var(--surface); border-bottom: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { color: var(--ink); text-decoration: none; font-size: 18px; font-weight: 700; letter-spacing: -.03em; }
.header-label, .header-link { color: var(--muted); font-size: 14px; }
.page { max-width: 800px; margin: 0 auto; padding: 56px 20px 72px; }
.eyebrow, .step { margin: 0 0 12px; color: var(--accent); font-size: 12px; font-weight: 700; letter-spacing: .12em; }
h1 { margin: 0; font-size: clamp(30px, 5vw, 42px); line-height: 1.23; letter-spacing: -.045em; }
.lede { max-width: 630px; margin: 20px 0 40px; color: var(--muted); font-size: 18px; }
h2 { margin: 0 0 12px; font-size: 21px; line-height: 1.35; letter-spacing: -.025em; }
p { margin: 0 0 16px; }
ul { margin: 0; padding-left: 1.35em; }
li + li { margin-top: 12px; }
.document section { padding: 30px 0; border-top: 1px solid var(--line); }
.panel { padding: 28px 30px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.panel + .panel { margin-top: 20px; }
.panel p { color: var(--muted); }
.flow { border-color: #bac8e4; }
.account { padding: 12px 16px; background: #eff3fc; border-radius: 8px; overflow-wrap: anywhere; }
.second-step { margin-top: 32px; padding-top: 28px; border-top: 1px solid var(--line); }
.check { display: flex; align-items: flex-start; gap: 12px; margin: 16px 0 24px; font-weight: 600; }
.check input { flex: none; width: 20px; height: 20px; margin: 3px 0 0; accent-color: var(--danger); }
.type-label { display: block; margin-bottom: 8px; }
#confirm-word { display: block; width: min(100%, 340px); height: 48px; padding: 10px 12px; border: 1px solid #818792; border-radius: 8px; background: white; color: var(--ink); font: inherit; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.button { min-height: 48px; padding: 10px 18px; border: 1px solid transparent; border-radius: 10px; font: inherit; font-weight: 700; cursor: pointer; transition: transform .15s ease, opacity .15s ease; }
.button:not(:disabled):active { transform: scale(.98); }
.button:disabled { cursor: not-allowed; opacity: .55; }
.button-primary { background: var(--accent); color: white; }
.button-danger { background: var(--danger); color: white; }
.button-secondary { background: white; color: var(--ink); border-color: var(--line); }
.status { min-height: 26px; margin: 18px 0 0 !important; color: var(--muted); }
.status.error { color: var(--danger); font-weight: 600; }
.status.success { color: #17643a; font-weight: 600; }
.note { max-width: 650px; margin-top: 24px; color: var(--muted); font-size: 14px; }
.site-footer { min-height: 70px; padding: 20px max(20px, calc((100vw - 800px)/2)); display: flex; justify-content: space-between; gap: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
@media (max-width: 560px) { .page { padding-top: 36px; } .panel { padding: 22px 20px; } .actions { flex-direction: column; } .actions .button { width: 100%; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .button { transition: none; } }