:root {
  --ink: #102033;
  --muted: #627181;
  --paper: #f6f7f3;
  --card: #ffffff;
  --line: #dfe5e4;
  --accent: #d8853b;
  --accent-soft: #fff0dd;
  --blue-soft: #e8f0f4;
  --shadow: 0 18px 45px rgba(16, 32, 51, 0.08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Noto Sans CJK SC", sans-serif; line-height: 1.65; }
a { color: inherit; text-decoration: none; }
.topbar { position: sticky; top: 0; z-index: 5; display: flex; align-items: center; justify-content: space-between; padding: 14px max(20px, calc((100% - 960px) / 2)); background: rgba(246, 247, 243, .9); backdrop-filter: blur(14px); border-bottom: 1px solid rgba(223, 229, 228, .75); }
.brand { display: inline-flex; align-items: center; gap: 9px; font-weight: 800; letter-spacing: -.02em; }
.brand-mark { display: grid; width: 28px; height: 28px; place-items: center; border-radius: 9px; background: var(--ink); color: #f5c76b; font-size: 14px; }
.status-pill, .section-note { color: var(--muted); font-size: .78rem; }
.shell { width: min(960px, calc(100% - 32px)); margin: 0 auto; }
.hero { padding: 74px 0 42px; max-width: 700px; }
.eyebrow { margin: 0 0 8px; color: var(--accent); font-size: .72rem; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 18px; font-size: clamp(2.6rem, 10vw, 5.3rem); line-height: .99; letter-spacing: -.075em; }
h1 em { color: var(--accent); font-style: normal; }
.hero-copy { max-width: 540px; color: var(--muted); font-size: 1.08rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 17px; border-radius: 999px; font-size: .9rem; font-weight: 800; }
.button-primary { background: var(--ink); color: #fff; box-shadow: 0 8px 20px rgba(16, 32, 51, .15); }
.button-quiet { background: var(--card); border: 1px solid var(--line); }
.metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; overflow: hidden; margin: 20px 0 72px; background: var(--line); border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); }
.metrics div { display: grid; grid-template-columns: auto auto; column-gap: 5px; padding: 17px 14px; background: var(--card); }
.metrics strong { font-size: 1.7rem; line-height: 1; letter-spacing: -.06em; }
.metrics span { align-self: end; color: var(--accent); font-size: .75rem; font-weight: 800; }
.metrics small { grid-column: 1 / -1; margin-top: 6px; color: var(--muted); font-size: .72rem; }
.section { margin: 0 0 76px; scroll-margin-top: 74px; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 20px; }
h2 { margin-bottom: 0; font-size: clamp(1.65rem, 5vw, 2.4rem); letter-spacing: -.055em; line-height: 1.08; }
h3 { margin-bottom: 6px; font-size: 1.02rem; letter-spacing: -.025em; }
.today-card { display: grid; grid-template-columns: auto 1fr; gap: 20px; padding: 25px; background: var(--ink); color: #f7f3e9; border-radius: 22px; box-shadow: var(--shadow); }
.today-number { color: #f5c76b; font-size: 3.2rem; font-weight: 800; line-height: 1; letter-spacing: -.08em; }
.today-card p { color: #c9d4dc; }
details summary { cursor: pointer; }
.today-card details { color: #f5c76b; font-size: .88rem; }
.today-card details p { margin: 8px 0 0; font-size: .88rem; }
.day-list { display: grid; gap: 10px; }
.day-card { display: grid; grid-template-columns: 54px 1fr auto; align-items: center; gap: 14px; padding: 16px; background: var(--card); border: 1px solid var(--line); border-radius: 16px; transition: transform .2s, border-color .2s, background .2s; }
.day-card:has(input:checked) { background: #f0f6f3; border-color: #a9c8bd; }
.day-date { align-self: start; padding-top: 3px; color: var(--accent); font-size: .78rem; font-weight: 900; }
.day-body p { margin-bottom: 8px; color: var(--muted); font-size: .88rem; line-height: 1.45; }
.tags { display: flex; flex-wrap: wrap; gap: 5px; }
.tags span { padding: 2px 8px; background: var(--blue-soft); border-radius: 999px; color: #426171; font-size: .68rem; }
.check { display: inline-flex; align-items: center; gap: 5px; color: var(--muted); font-size: .75rem; white-space: nowrap; }
.check input { width: 17px; height: 17px; accent-color: var(--accent); }
.reading-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.reading-card { padding: 16px 17px; background: var(--card); border: 1px solid var(--line); border-radius: 16px; }
.reading-card summary { display: flex; align-items: center; gap: 12px; list-style: none; font-size: .96rem; font-weight: 800; }
.reading-card summary::-webkit-details-marker { display: none; }
.reading-card summary span { display: grid; width: 29px; height: 29px; place-items: center; flex: 0 0 auto; border-radius: 9px; background: var(--accent-soft); color: var(--accent); font-size: .72rem; }
.reading-card p { margin: 14px 0 8px; color: var(--muted); font-size: .88rem; }
.reading-card small { color: var(--accent); font-size: .78rem; }
.acceptance-card { padding: 25px; background: var(--accent-soft); border: 1px solid #f1d2ad; border-radius: 22px; }
.acceptance-card ul { margin: 8px 0 22px; padding-left: 20px; }
.acceptance-card li { margin: 5px 0; }
.boundary-note { display: grid; gap: 2px; padding: 13px 15px; background: rgba(255,255,255,.62); border-radius: 13px; color: #754920; font-size: .84rem; }
.footer { padding: 28px 20px 44px; color: var(--muted); text-align: center; font-size: .78rem; }
@media (max-width: 620px) {
  .topbar { padding-inline: 16px; }
  .status-pill { font-size: .7rem; }
  .shell { width: min(100% - 24px, 560px); }
  .hero { padding-top: 54px; }
  .metrics { margin-bottom: 58px; }
  .metrics div { padding: 14px 10px; }
  .metrics strong { font-size: 1.45rem; }
  .metrics small { font-size: .64rem; }
  .section { margin-bottom: 58px; }
  .section-heading { align-items: start; flex-direction: column; gap: 8px; }
  .section-note { font-size: .72rem; }
  .today-card { padding: 20px; gap: 14px; }
  .today-number { font-size: 2.5rem; }
  .day-card { grid-template-columns: 45px 1fr; gap: 10px; }
  .check { grid-column: 2; justify-self: start; margin-top: 2px; }
  .reading-grid { grid-template-columns: 1fr; }
}