* { box-sizing: border-box; }
:root { --brand: #2b5cff; --brand-dark: #1e46cc; --ink: #1a2233; }
body { font-family: -apple-system, "Segoe UI", "Malgun Gothic", sans-serif; margin: 0; background: #f6f7f9; color: #222; line-height: 1.55; min-height: 100vh; display: flex; flex-direction: column; }
main { flex: 1; }
header { display: flex; justify-content: space-between; align-items: center; padding: 1rem 2rem; background: var(--ink); color: #fff; }
header .brand { color: #fff; font-weight: bold; text-decoration: none; font-size: 1.2rem; }
header nav a { color: #cdd6e6; margin-left: 1.2rem; text-decoration: none; }
header nav a:hover { color: #fff; }
.lang-switcher { margin-left: 1.2rem; background: #232c40; color: #cdd6e6; border: 1px solid #3a4459; border-radius: 4px; padding: .3rem .5rem; font-size: .85rem; }
.footer-since { color: #999; font-size: .82rem; display: block; margin-top: .3rem; }
.footer-inner .footer-since { display: inline; margin: 0; color: #8b96ac; }
main { max-width: 1280px; margin: 2rem auto; padding: 0 1rem; }
h1 { margin-top: 0; }
.card { background: #fff; border-radius: 8px; padding: 1.5rem; box-shadow: 0 1px 3px rgba(0,0,0,.1); display: flex; flex-direction: column; gap: .8rem; max-width: 420px; }
.card label { display: flex; flex-direction: column; gap: .3rem; font-size: .9rem; color: #555; }
.card input, .card select { padding: .5rem; border: 1px solid #ccc; border-radius: 4px; font-size: 1rem; }
button, .button { background: var(--brand); color: #fff; border: none; padding: .6rem 1.2rem; border-radius: 4px; cursor: pointer; text-decoration: none; display: inline-block; font-size: .95rem; }
button:hover, .button:hover { background: var(--brand-dark); }
.button-ghost { background: transparent; color: var(--ink); border: 1px solid #c7cddb; }
.button-ghost:hover { background: #ecefF5; color: var(--ink); }
.error { color: #c0392b; background: #fdecea; padding: .7rem 1rem; border-radius: 4px; }
.notice { color: #1a7a3c; background: #e9f9ee; padding: .7rem 1rem; border-radius: 4px; }
.hint { color: #666; font-size: .9rem; }
table.list { width: 100%; border-collapse: collapse; background: #fff; border-radius: 8px; overflow: hidden; margin-bottom: 1.5rem; }
table.list th, table.list td { text-align: left; padding: .6rem .8rem; border-bottom: 1px solid #eee; }
table.list th { background: #f0f2f5; font-size: .85rem; color: #555; }
code { background: #eef1f6; padding: .1rem .4rem; border-radius: 3px; }

.hero { text-align: center; padding: 3.5rem 1rem 3rem; }
.hero h1 { font-size: 2.1rem; line-height: 1.35; margin-bottom: 1rem; }
.hero .lead { color: #555; max-width: 640px; margin: 0 auto 1.6rem; font-size: 1.05rem; }
.hero .lead code { font-size: .95rem; }

.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.2rem; margin: 2.5rem 0; }
.feature { background: #fff; border-radius: 10px; padding: 1.4rem; box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.feature h2 { font-size: 1.05rem; margin: 0 0 .5rem; color: var(--ink); }
.feature p { margin: 0; color: #555; font-size: .92rem; }

@media (max-width: 640px) {
    .hero h1 { font-size: 1.6rem; }
}

.record-add-wrap { display: grid; grid-template-columns: minmax(280px, 420px) 1fr; gap: 1.5rem; align-items: start; }
.record-add-wrap .card { max-width: none; width: 100%; }
.record-help { background: #fff; border-radius: 8px; padding: 1.2rem 1.4rem; box-shadow: 0 1px 3px rgba(0,0,0,.1); font-size: .87rem; color: #444; margin: 0; }
.record-help dt { font-weight: 600; color: var(--ink); margin-top: .9rem; }
.record-help dt:first-child { margin-top: 0; }
.record-help dd { margin: .25rem 0 0; line-height: 1.6; }

@media (max-width: 700px) {
    .record-add-wrap { grid-template-columns: 1fr; }
}

footer { background: var(--ink); color: #b9c2d4; margin-top: 3rem; }
.footer-inner { max-width: 1280px; margin: 0 auto; padding: 1.6rem 1rem; display: flex; flex-wrap: wrap; align-items: center; gap: .8rem 1.6rem; font-size: .88rem; }
.footer-inner b { color: #fff; }
.footer-links { display: flex; gap: 1rem; margin-left: auto; }
.footer-links a { color: #b9c2d4; text-decoration: none; }
.footer-links a:hover { color: #fff; }
.footer-copy { width: 100%; color: #7c88a0; font-size: .8rem; }

.auth-wrap { display: grid; grid-template-columns: 1.1fr 1fr; gap: 2.5rem; align-items: center; padding: 2rem 0; }
.auth-pitch h1 { font-size: 1.7rem; line-height: 1.4; }
.auth-pitch p { color: #555; }
.auth-pitch ul { padding-left: 1.2rem; color: #444; font-size: .92rem; display: flex; flex-direction: column; gap: .5rem; }
.auth-wrap h2 { margin-top: 0; }

@media (max-width: 800px) {
    .auth-wrap { grid-template-columns: 1fr; }
    .auth-pitch { order: 2; }
}

[dir=rtl] header nav a, [dir=rtl] .lang-switcher { margin-left: 0; margin-right: 1.2rem; }
[dir=rtl] .footer-links { margin-left: 0; margin-right: auto; }
[dir=rtl] .auth-pitch ul { padding-left: 0; padding-right: 1.2rem; }