:root {
  --bg: #f4efe6;
  --paper: #fbf8f2;
  --ink: #2a2824;
  --ink-2: #5d5850;
  --ink-3: #8d877c;
  --line: #e2dbcd;
  --accent: #5f7d63;
  --accent-ink: #ffffff;
  --accent-soft: #e5ebe0;
  --warm: #b0704f;
  --serif: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", "SimSun", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  /* 时间账本配色 */
  --c-sleep: #8aa0b8;
  --c-work: #b0704f;
  --c-commute: #c9a46b;
  --c-chores: #a39a8a;
  --c-screen: #7a6f86;
  --c-body: #6f9a7a;
  --c-people: #c48b8b;
  --c-free: transparent;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #171714;
    --paper: #1f1f1b;
    --ink: #ebe6dc;
    --ink-2: #b6afa2;
    --ink-3: #847e73;
    --line: #34332d;
    --accent: #8fb193;
    --accent-ink: #14160f;
    --accent-soft: #263027;
    --warm: #d79a78;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #171714;
  --paper: #1f1f1b;
  --ink: #ebe6dc;
  --ink-2: #b6afa2;
  --ink-3: #847e73;
  --line: #34332d;
  --accent: #8fb193;
  --accent-ink: #14160f;
  --accent-soft: #263027;
  --warm: #d79a78;
  color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; letter-spacing: .02em; }

/* 顶部 */
.site-header {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 20px;
  padding: 14px 28px;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.logo { display: flex; align-items: center; gap: 8px; font-family: var(--serif); font-size: 19px; font-weight: 600; text-decoration: none; white-space: nowrap; letter-spacing: .1em; }
.logo-mark { width: 16px; height: 16px; border: 2.5px solid var(--accent); border-radius: 50%; }
.site-header nav { display: flex; gap: 20px; overflow-x: auto; flex: 1; scrollbar-width: none; }
.site-header nav::-webkit-scrollbar { display: none; }
.site-header nav a { color: var(--ink-2); text-decoration: none; font-size: 14px; white-space: nowrap; }
.site-header nav a:hover { color: var(--accent); }
.icon-btn { background: none; border: 1px solid var(--line); color: var(--ink-2); border-radius: 999px; width: 32px; height: 32px; cursor: pointer; font-size: 15px; flex: none; }

main { max-width: 820px; margin: 0 auto; padding: 0 24px; }

/* 按钮 */
.btn {
  display: inline-block; font: inherit; font-size: 15px; cursor: pointer; text-decoration: none;
  background: var(--accent); color: var(--accent-ink); border: 1px solid var(--accent);
  border-radius: 999px; padding: 10px 22px; transition: opacity .2s, transform .1s;
}
.btn:hover { opacity: .88; }
.btn:active { transform: scale(.97); }
.btn:disabled { opacity: .5; cursor: default; }
.btn.ghost { background: transparent; color: var(--accent); }
.hint { color: var(--ink-3); font-size: 13px; margin: 12px 0 0; }

/* 开篇 */
.hero { min-height: calc(92vh - 60px); display: flex; flex-direction: column; justify-content: center; padding: 64px 0; }
.eyebrow { font-size: 12px; letter-spacing: .3em; color: var(--accent); margin: 0 0 28px; }
.hero h1 { font-size: clamp(38px, 8vw, 68px); line-height: 1.3; margin: 0 0 28px; }
.hero h1 span { color: var(--ink-3); }
.lead { font-size: clamp(16px, 2.4vw, 19px); color: var(--ink-2); margin: 0 0 40px; max-width: 34em; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.br-m { display: none; }

/* 区块 */
.block { padding: 88px 0; border-top: 1px solid var(--line); }
.block-head { margin-bottom: 40px; }
.num { font-family: var(--serif); color: var(--accent); font-size: 14px; letter-spacing: .2em; margin: 0 0 8px; }
.block-head h2 { font-size: clamp(28px, 5vw, 38px); margin: 0 0 10px; line-height: 1.35; }
.sub { color: var(--ink-2); margin: 0; }

/* 三种活法 */
.ways-tabs { display: none; }
.table-wrap { overflow-x: auto; }
.ways { width: 100%; border-collapse: collapse; font-size: 15px; }
.ways th, .ways td { text-align: left; padding: 16px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
.ways thead th { font-family: var(--serif); font-size: 18px; color: var(--ink-3); font-weight: 600; }
.ways thead th.hl { color: var(--accent); }
.ways tbody th { color: var(--ink-3); font-weight: 500; font-size: 13px; white-space: nowrap; width: 4.5em; }
.ways td { color: var(--ink-2); }
.ways td.hl { color: var(--ink); font-weight: 500; background: var(--accent-soft); }
.ways tr:last-child td.hl { border-radius: 0 0 10px 10px; }
.ways thead th.hl { background: var(--accent-soft); border-radius: 10px 10px 0 0; }

/* 态度 */
.beliefs { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 48px; }
.beliefs li { padding: 22px 0; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 2.4em 1fr; }
.beliefs .b-num { font-family: var(--serif); color: var(--accent); font-size: 14px; padding-top: 4px; }
.beliefs h3 { margin: 0 0 4px; font-size: 21px; }
.beliefs p { margin: 0; color: var(--ink-2); font-size: 15px; }

/* 生活方式 */
.chips { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 24px; }
.chip {
  font: inherit; font-size: 15px; cursor: pointer;
  border: 1px solid var(--line); background: transparent; color: var(--ink-2);
  border-radius: 999px; padding: 6px 18px;
}
.chip[aria-selected="true"] { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.domain { background: var(--paper); border: 1px solid var(--line); border-radius: 18px; padding: 32px; }
.domain-quote { font-family: var(--serif); font-size: 22px; margin: 0 0 28px; line-height: 1.6; }
.domain-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.domain h4 { margin: 0 0 10px; font-size: 13px; letter-spacing: .15em; color: var(--ink-3); font-weight: 500; }
.domain ul { margin: 0; padding: 0; list-style: none; }
.domain li { padding: 6px 0 6px 22px; position: relative; color: var(--ink-2); }
.drop li::before { content: "—"; position: absolute; left: 0; color: var(--ink-3); }
.drop li { text-decoration: line-through; text-decoration-color: color-mix(in srgb, var(--ink-3) 60%, transparent); }
.keep li::before { content: "＋"; position: absolute; left: 0; color: var(--accent); }
.keep li { color: var(--ink); }
.experiment { margin-top: 28px; padding: 16px 20px; border-radius: 12px; background: var(--accent-soft); display: flex; gap: 12px; align-items: baseline; }
.experiment b { color: var(--accent); white-space: nowrap; font-size: 13px; letter-spacing: .1em; }
.domain-note { margin-top: 24px; }
.domain-note summary { cursor: pointer; color: var(--ink-2); font-size: 14px; }
.domain-note ul { margin-top: 10px; }
.domain-note li { font-size: 14px; padding-left: 0; }
.domain-note p { color: var(--ink-3); font-size: 12px; margin: 8px 0 0; }

/* 今日留白 */
.today-card {
  background: var(--paper); border: 1px solid var(--line); border-radius: 18px;
  padding: 40px 36px; text-align: center; position: relative; overflow: hidden;
}
.today-card.done { border-color: var(--accent); }
.today-date { color: var(--ink-3); font-size: 13px; letter-spacing: .15em; margin: 0 0 18px; }
.today-title { font-family: var(--serif); font-size: clamp(24px, 4.5vw, 32px); line-height: 1.5; margin: 0 0 12px; }
.today-why { color: var(--ink-2); margin: 0 auto 28px; max-width: 28em; }
.today-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.streak { margin-top: 28px; display: grid; grid-template-columns: auto 1fr; gap: 12px 36px; align-items: center; }
.streak .hint { grid-column: 1 / -1; margin: 0; }
.streak-stats { display: flex; gap: 28px; }
.streak-stats div { display: flex; flex-direction: column; }
.streak-stats b { font-family: var(--serif); font-size: 34px; line-height: 1.2; color: var(--accent); font-variant-numeric: tabular-nums; }
.streak-stats span { font-size: 12px; color: var(--ink-3); }
.calendar { display: grid; grid-template-columns: repeat(14, 1fr); gap: 5px; }
.calendar span { aspect-ratio: 1; border-radius: 4px; background: var(--line); opacity: .55; }
.calendar span.on { background: var(--accent); opacity: 1; }
.calendar span.today { outline: 1.5px solid var(--ink-3); outline-offset: 1px; }

/* 同步码 */
.sync { margin-top: 40px; padding: 28px 32px; border: 1px dashed var(--line); border-radius: 18px; }
.sync h3 { margin: 0 0 10px; font-size: 20px; }
.sync-intro p { margin: 0 0 10px; color: var(--ink-2); font-size: 14px; }
.sync-intro b { color: var(--ink); }
.sync-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 14px; }
.sync-actions .btn { font-size: 14px; padding: 8px 18px; }
.btn.ghost.danger { color: var(--warm); border-color: color-mix(in srgb, var(--warm) 50%, transparent); }
.sync-enter { display: flex; gap: 10px; margin-top: 14px; flex-wrap: wrap; }
.sync-enter input { flex: 1 1 240px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .08em; text-transform: uppercase; }
.sync-on { margin-top: 8px; }
.sync-label { margin: 0; font-size: 12px; color: var(--ink-3); letter-spacing: .15em; }
.sync-code { margin: 2px 0 10px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: clamp(18px, 3.2vw, 24px); letter-spacing: .06em; color: var(--accent); overflow-wrap: anywhere; user-select: all; }
.sync-warn { margin: 0 0 8px; font-size: 13px; color: var(--ink-2); }
.sync-warn b { color: var(--warm); }
.sync-tip { margin: 0; font-size: 13px; color: var(--ink-3); }
.sync-msg { min-height: 1.4em; }
.sync-msg:empty { display: none; }

/* 时间账本 */
.ledger { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.ledger-inputs { display: grid; gap: 14px; }
.ledger-row { display: grid; grid-template-columns: 6.8em minmax(0, 1fr) 4.4em; gap: 10px; align-items: center; font-size: 14px; }
.ledger-row label { color: var(--ink-2); display: flex; align-items: center; gap: 8px; white-space: nowrap; }
.ledger-row .dot { width: 10px; height: 10px; border-radius: 3px; flex: none; }
.ledger-row output { white-space: nowrap; text-align: right; font-variant-numeric: tabular-nums; color: var(--ink); }
input[type="range"] { width: 100%; accent-color: var(--accent); }
.ledger-result { position: sticky; top: 90px; }
.ledger-bar { display: flex; height: 44px; border-radius: 10px; overflow: hidden; border: 1px dashed var(--ink-3); background: repeating-linear-gradient(135deg, transparent 0 6px, color-mix(in srgb, var(--accent) 12%, transparent) 6px 7px); }
.ledger-bar span { height: 100%; transition: width .3s; }
.ledger-legend { display: flex; flex-wrap: wrap; gap: 4px 14px; margin: 10px 0 0; font-size: 12px; color: var(--ink-3); }
.ledger-legend i { display: inline-block; width: 8px; height: 8px; border-radius: 2px; margin-right: 5px; }
.ledger-free { margin: 28px 0 6px; display: flex; align-items: baseline; gap: 12px; }
.ledger-free span { color: var(--ink-3); font-size: 14px; }
.ledger-free b { font-family: var(--serif); font-size: 44px; line-height: 1; color: var(--accent); font-variant-numeric: tabular-nums; }
.ledger-free b.neg { color: var(--warm); }
.ledger-msg { color: var(--ink-2); margin: 8px 0 0; }

/* 留白墙 */
.wall-form { display: grid; grid-template-columns: 2fr 1fr auto; gap: 12px; align-items: end; }
.wall-form label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--ink-3); }
input[type="text"] {
  font: inherit; font-size: 15px; color: var(--ink);
  background: var(--paper); border: 1px solid var(--line);
  border-radius: 10px; padding: 10px 12px; min-width: 0; width: 100%;
}
input[type="text"]:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
#wall-msg { min-height: 1.4em; }
.wall-head { margin-top: 32px; color: var(--ink-3); font-size: 14px; }
.wall-head b { color: var(--accent); font-family: var(--serif); font-size: 20px; }
.wall { list-style: none; margin: 14px 0 0; padding: 0; columns: 3 220px; column-gap: 14px; }
.wall li {
  break-inside: avoid; margin-bottom: 14px;
  background: var(--paper); border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px;
}
.wall li.mine { border-color: var(--accent); }
.wall li.new { animation: pop .45s ease-out; }
.wall .msg { margin: 0 0 10px; font-family: var(--serif); font-size: 16px; line-height: 1.65; overflow-wrap: anywhere; }
.wall .meta { display: flex; justify-content: space-between; gap: 8px; font-size: 12px; color: var(--ink-3); }
.wall .who { overflow-wrap: anywhere; }
.wall-status { margin-top: 8px; }
#wall-more { margin-top: 8px; }
@keyframes pop { from { transform: translateY(6px); opacity: 0; } to { transform: none; opacity: 1; } }

/* 结尾 */
.closing { padding: 120px 0 100px; border-top: 1px solid var(--line); text-align: center; }
.closing p { font-family: var(--serif); font-size: clamp(22px, 4vw, 30px); line-height: 1.8; margin: 0; color: var(--ink-2); }
.site-footer { text-align: center; color: var(--ink-3); font-size: 12px; letter-spacing: .15em; padding: 0 16px 48px; }

.toast {
  position: fixed; left: 50%; bottom: 28px; transform: translate(-50%, 16px);
  background: var(--ink); color: var(--bg);
  padding: 10px 20px; border-radius: 999px; font-size: 14px;
  opacity: 0; pointer-events: none; transition: all .25s; z-index: 20;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* 手机 */
@media (max-width: 680px) {
  .site-header { padding: 12px 16px; gap: 14px; }
  main { padding: 0 16px; }
  .br-m { display: inline; }
  .hero { min-height: auto; padding: 72px 0 64px; }
  .block { padding: 64px 0; }
  .block-head { margin-bottom: 28px; }

  /* 三种活法：手机上一次只看一列 */
  .ways-tabs { display: flex; gap: 6px; margin-bottom: 12px; }
  .way-tab { flex: 1; font: inherit; font-size: 15px; padding: 8px; border-radius: 999px; border: 1px solid var(--line); background: transparent; color: var(--ink-2); cursor: pointer; }
  .way-tab.active { background: var(--ink); color: var(--bg); border-color: var(--ink); }
  .ways thead { display: none; }
  .ways td { display: none; }
  .ways td.show { display: table-cell; }
  .ways td.hl.show { border-radius: 0; }
  .ways tbody th { width: 5em; }

  .beliefs { grid-template-columns: 1fr; }
  .domain { padding: 24px 20px; }
  .domain-cols { grid-template-columns: 1fr; gap: 20px; }
  .domain-quote { font-size: 19px; }
  .today-card { padding: 32px 20px; }
  .streak { grid-template-columns: 1fr; }
  .ledger { grid-template-columns: 1fr; gap: 28px; }
  .sync { padding: 22px 18px; }
  .ledger-result { position: static; }
  .wall-form { grid-template-columns: 1fr; }
}