:root { --site-primary: #5b5ce2; --site-ink: #20233d; --site-muted: #73768c; }
* { box-sizing: border-box; }
.site-page { margin: 0; color: var(--site-ink); font-family: "PingFang SC", "Microsoft YaHei", sans-serif; background: radial-gradient(ellipse at 78% 25%, #ececff 0, transparent 48%), #fafaff; }
.site-shell { width: min(1120px, calc(100% - 64px)); margin: auto; }
.site-header { display: flex; align-items: center; justify-content: space-between; min-height: 104px; }
.site-brand { display: inline-flex; align-items: center; gap: 12px; color: inherit; font-size: 19px; font-weight: 700; text-decoration: none; }
.site-brand-mark { display: grid; width: 39px; height: 39px; place-items: center; color: #fff; background: var(--site-primary); border-radius: 13px; }
.site-login { display: inline-flex; gap: 18px; color: #55586e; font-size: 14px; text-decoration: none; }
.site-hero { display: grid; grid-template-columns: 1.12fr 1fr; align-items: center; gap: 72px; padding: 64px 0 76px; }
.site-eyebrow { display: flex; align-items: center; gap: 9px; margin: 0 0 25px; color: var(--site-primary); font-size: 13px; }
.site-eyebrow span { width: 7px; height: 7px; border-radius: 50%; background: var(--site-primary); }
.site-hero h1 { margin: 0; font-size: clamp(42px, 4.8vw, 62px); font-weight: 750; letter-spacing: -.05em; line-height: 1.28; }
.site-hero h1 > span { color: var(--site-primary); }
.site-description { max-width: 420px; margin: 24px 0 30px; color: var(--site-muted); font-size: 15px; line-height: 1.95; }
.site-actions { display: flex; align-items: center; gap: 24px; }
.site-primary { display: inline-flex; align-items: center; justify-content: center; gap: 25px; padding: 16px 24px; border-radius: 12px; background: var(--site-primary); color: #fff; text-decoration: none; font-size: 14px; font-weight: 600; box-shadow: 0 9px 24px #5b5ce229; }
.site-primary:hover { background: #4849c8; }
.site-secondary { color: #62657c; font-size: 14px; text-decoration: none; }
.site-hero-note { margin: 19px 0 0; color: #9698a9; font-size: 12px; }
.site-preview { padding: 26px; border: 1px solid #fff; border-radius: 22px; background: #ffffffd9; box-shadow: 0 24px 70px #5354af18; transform: rotate(-2deg); }
.preview-top { display: flex; align-items: center; gap: 8px; padding-bottom: 21px; border-bottom: 1px solid #edeef7; font-size: 13px; color: #62657c; }
.preview-dot { width: 8px; height: 8px; border-radius: 50%; background: #b5b6ed; }
.preview-example { margin-left: auto; color: #a0a2b2; font-size: 11px; }
.preview-heading { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin: 23px 0 17px; font-size: 15px; font-weight: 600; }
.preview-tag { color: #8a8da4; font-size: 10px; font-weight: 400; }
.preview-note { padding: 20px; background: linear-gradient(120deg, #eeeeff, #f5f3ff); border-radius: 12px; }
.preview-note-label { color: #7273c9; font-size: 11px; }
.preview-note p { margin: 12px 0 17px; font-size: 20px; line-height: 1.6; }
.preview-note-footer { color: #999abd; font-size: 10px; }
.preview-task { display: flex; gap: 12px; align-items: center; padding: 18px 0; border-bottom: 1px solid #f0f0f7; }
.preview-check { display: grid; flex: 0 0 20px; height: 20px; place-items: center; color: #fff; background: #a3a4e5; border-radius: 6px; font-size: 12px; }
.preview-check.is-pending { border: 1px solid #dddfea; background: transparent; }
.preview-task strong { display: block; margin-bottom: 5px; font-size: 12px; font-weight: 500; }
.preview-task div > span { display: block; color: #9698a9; font-size: 10px; }
.preview-done { margin-left: auto; color: #999ab6; font-size: 10px; white-space: nowrap; }
.preview-bottom { display: flex; gap: 8px; padding-top: 18px; }
.preview-bottom span { padding: 5px 10px; color: #8c8ea6; background: #f5f5fb; border-radius: 5px; font-size: 10px; }
.site-features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 25px; padding: 0 0 60px; }
.site-features article { padding: 25px; border: 1px solid #ebeaf5; border-radius: 15px; background: #ffffff8c; }
.feature-icon { display: grid; width: 33px; height: 33px; place-items: center; margin-bottom: 17px; border-radius: 9px; color: var(--site-primary); background: #efefff; font-size: 19px; }
.site-features h2 { margin: 0 0 9px; font-size: 16px; font-weight: 600; }
.site-features p { margin: 0; color: var(--site-muted); font-size: 12px; line-height: 1.85; }
.site-footer { display: flex; justify-content: space-between; gap: 18px; padding: 24px 0 29px; border-top: 1px solid #eaeaf4; color: #989aab; font-size: 11px; }
.site-footer a { color: inherit; text-decoration: none; }
.site-page a:focus-visible { outline: 3px solid #a4a5ef; outline-offset: 5px; }
.auth-register-page .auth-code-row { display: flex; gap: 10px; }
.auth-register-page .auth-code-row .auth-input-wrap { min-width: 0; flex: 1; }
.auth-code-button { flex: 0 0 126px; border: 1px solid #e4e7fa; border-radius: 11px; color: var(--site-primary); background: #f8f9ff; font: inherit; font-size: 12px; cursor: pointer; }
.auth-code-button:disabled { color: #999bad; cursor: default; }
@media (max-width: 850px) {
    .site-hero { gap: 36px; padding: 42px 0 55px; }
    .site-preview { padding: 20px; }
    .site-features { gap: 14px; }
    .site-features article { padding: 20px; }
}
@media (max-width: 640px) {
    .site-shell { width: calc(100% - 40px); }
    .site-header { min-height: 82px; }
    .site-brand { font-size: 16px; gap: 9px; }
    .site-brand-mark { width: 33px; height: 33px; border-radius: 10px; }
    .site-login { font-size: 12px; gap: 5px; }
    .site-hero { grid-template-columns: 1fr; gap: 38px; padding: 28px 0 45px; }
    .site-hero h1 { font-size: 46px; }
    .site-description { font-size: 14px; margin-top: 20px; }
    .site-preview { transform: none; padding: 22px; }
    .site-features { grid-template-columns: 1fr; padding-bottom: 35px; }
    .site-features article { padding: 22px; }
    .site-footer { flex-direction: column; gap: 11px; }
}