:root {
  --board: #f6f8f7;
  --paper: #ffffff;
  --ink: #16242b;
  --slate: #56666d;
  --line: #d9e1de;
  --jade: #0e6b5a;
  --jade-ink: #0a5345;
  --jade-tint: #e2f0eb;
  --marker: #c23b2e;
  --serif: 'Noto Serif SC', 'Songti SC', serif;
  --sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --board: #0f1715; --paper: #15201d; --ink: #e5ece9; --slate: #9db0aa; --line: #2a3a35;
    --jade: #4fb79f; --jade-ink: #7fd0bd; --jade-tint: #17302a; --marker: #ef7a6c;
    color-scheme: dark;
  }
}
:root[data-theme='dark'] {
  --board: #0f1715; --paper: #15201d; --ink: #e5ece9; --slate: #9db0aa; --line: #2a3a35;
  --jade: #4fb79f; --jade-ink: #7fd0bd; --jade-tint: #17302a; --marker: #ef7a6c;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--board); color: var(--ink); font: 400 17px/1.75 var(--sans); }
a { color: var(--jade); }
a:focus-visible, button:focus-visible { outline: 3px solid var(--jade); outline-offset: 3px; border-radius: 6px; }
h1, h2, h3 { margin: 0; font-family: var(--serif); font-weight: 900; letter-spacing: 0.01em; }
h1 { font-size: clamp(2.1rem, 5.2vw, 3.6rem); line-height: 1.22; }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); line-height: 1.3; margin-bottom: 1.1rem; }
h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 0.4rem; }
p { margin: 0; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
@media (max-width: 560px) { .wrap { padding: 0 16px; } }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0 22px; border-radius: 10px; border: 0;
  background: var(--jade); color: #fff; font: 500 1rem/1 var(--sans); text-decoration: none; cursor: pointer;
}
.btn:hover { background: var(--jade-ink); }
@media (prefers-color-scheme: dark) { :root:not([data-theme='light']) .btn { color: #07211b; } }
.btn-sm { min-height: 38px; padding: 0 14px; font-size: 0.92rem; }
.btn-ghost { background: var(--jade-tint); color: var(--jade-ink); }
.btn-ghost:hover { background: var(--jade); color: #fff; }
.link { font-weight: 500; text-underline-offset: 4px; }
.lead { font-size: 1.08rem; color: var(--slate); max-width: 34em; }

/* 顶栏 */
.top { position: sticky; top: 0; z-index: 5; background: color-mix(in srgb, var(--board) 88%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.top-in { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 700; font-size: 1.08rem; }
.brand b { color: var(--jade); }
.mark { width: 30px; height: 30px; flex: none; }
.top-nav { display: flex; align-items: center; gap: 22px; }
.top-nav a:not(.btn) { color: var(--ink); text-decoration: none; font-size: 0.95rem; }
.top-nav a:not(.btn):hover { color: var(--jade); }
@media (max-width: 720px) { .top-nav a:not(.btn) { display: none; } }

/* 首屏 */
.hero { padding: 72px 0 88px; }
.hero-in { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.hero-copy .lead { margin-top: 1.4rem; }
.cta { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 24px; margin-top: 2rem; }
.note { margin-top: 1rem; font-size: 0.92rem; color: var(--slate); }
@media (max-width: 900px) {
  .hero { padding: 40px 0 56px; }
  .hero-in { grid-template-columns: 1fr; gap: 40px; }
}

/* 排钟板：唯一的视觉重点 */
.board {
  margin: 0; background: var(--paper); border: 1px solid var(--line); border-radius: 14px;
  padding: 22px 22px 18px; box-shadow: 0 1px 0 var(--line), 0 24px 48px -28px rgba(14, 60, 50, 0.35);
}
.board-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; font-size: 0.92rem; color: var(--slate); padding-bottom: 12px; border-bottom: 2px solid var(--ink); }
.board-next { color: var(--jade-ink); font-weight: 700; }
.rows { list-style: none; margin: 0; padding: 0; }
.rows li {
  display: grid; grid-template-columns: 7.2em 1fr auto; align-items: center; gap: 12px;
  min-height: 58px; border-bottom: 1px dashed var(--line); padding: 6px 8px; border-radius: 8px;
}
.rows li.is-next { background: var(--jade-tint); border-bottom-color: transparent; }
.rows li.is-next .who::after { content: '下一位'; margin-left: 8px; font-size: 0.75rem; font-weight: 500; color: var(--jade-ink); }
.who { font-size: 1.05rem; white-space: nowrap; }
.who b { font-weight: 700; }
.marks { display: flex; gap: 6px; flex-wrap: wrap; }
.zheng { width: 28px; height: 28px; fill: none; stroke: var(--marker); stroke-width: 2.4; stroke-linecap: round; }
.zheng path.new { stroke-dasharray: 24; stroke-dashoffset: 24; animation: draw 0.45s ease-out forwards; }
@keyframes draw { to { stroke-dashoffset: 0; } }
@media (prefers-reduced-motion: reduce) { .zheng path.new { animation: none; stroke-dashoffset: 0; } }
.count { font-variant-numeric: tabular-nums; color: var(--slate); font-size: 0.95rem; }
.board-foot { display: flex; align-items: center; justify-content: space-between; margin-top: 16px; }
.reset { background: none; border: 0; color: var(--slate); font: inherit; font-size: 0.9rem; cursor: pointer; padding: 6px; }
.reset:hover { color: var(--ink); }
.board figcaption { margin-top: 14px; font-size: 0.92rem; color: var(--slate); min-height: 3.4em; }
@media (max-width: 420px) {
  .board { padding: 18px 14px 14px; }
  .rows li { grid-template-columns: 6em 1fr auto; gap: 8px; }
  .zheng { width: 24px; height: 24px; }
}

/* 内容区 */
.sec { padding: 80px 0; border-top: 1px solid var(--line); }
.sec-alt { background: var(--paper); }
.grid4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 36px; margin-top: 1.6rem; }
.grid4 article { border-top: 3px solid var(--jade); padding-top: 18px; }
.grid4 p { color: var(--slate); font-size: 0.98rem; }
@media (max-width: 960px) { .grid4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .grid4 { grid-template-columns: 1fr; gap: 28px; } .sec { padding: 56px 0; } }

.split { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: start; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; gap: 32px; } }
.rules { margin: 0; }
.rules div { display: grid; grid-template-columns: 6em 1fr; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.rules div:first-child { border-top: 1px solid var(--line); }
.rules dt { font-weight: 700; }
.rules dd { margin: 0; color: var(--slate); }

.soon { display: inline-block; vertical-align: middle; margin-left: 12px; padding: 2px 10px; border-radius: 999px; background: var(--jade-tint); color: var(--jade-ink); font: 500 0.8rem/1.6 var(--sans); }
.call { display: flex; flex-direction: column; gap: 10px; }
.say { max-width: 85%; padding: 10px 14px; border-radius: 14px; font-size: 0.97rem; line-height: 1.6; }
.say.them { align-self: flex-start; background: var(--paper); border: 1px solid var(--line); border-bottom-left-radius: 4px; }
.say.ai { align-self: flex-end; background: var(--jade); color: #fff; border-bottom-right-radius: 4px; }
@media (prefers-color-scheme: dark) { :root:not([data-theme='light']) .say.ai { color: #07211b; } }

.try { background: var(--jade-tint); }
.try p { max-width: 36em; }
.try p { color: var(--ink); font-size: 1.05rem; }

.en { padding: 56px 0; }
.en h2 { font-family: var(--sans); font-weight: 700; font-size: 1.15rem; margin-bottom: 0.6rem; }
.en p { color: var(--slate); max-width: 46em; font-size: 0.98rem; }

.foot { border-top: 1px solid var(--line); padding: 28px 0 40px; font-size: 0.9rem; color: var(--slate); }
.foot-in { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 24px; }
.foot nav { display: flex; flex-wrap: wrap; gap: 8px 22px; }
.foot a { color: var(--slate); text-underline-offset: 3px; }
.foot a:hover { color: var(--jade); }

/* 条款页 */
.doc { padding: 56px 0 80px; }
.doc .wrap { max-width: 760px; }
.doc h1 { font-size: clamp(1.8rem, 4vw, 2.4rem); }
.doc .meta { color: var(--slate); margin: 0.6rem 0 2rem; font-size: 0.95rem; }
.doc .zh { background: var(--paper); border: 1px solid var(--line); border-left: 4px solid var(--jade); border-radius: 10px; padding: 18px 22px; margin-bottom: 2.4rem; }
.doc .zh h2 { font-family: var(--sans); font-size: 1.05rem; font-weight: 700; margin-bottom: 0.5rem; }
.doc .zh ul { margin: 0; padding-left: 1.2em; color: var(--ink); }
.doc .zh li { margin: 0.25rem 0; }
.doc section h2 { font-family: var(--sans); font-weight: 700; font-size: 1.15rem; margin: 2rem 0 0.6rem; }
.doc section p, .doc section li { color: var(--ink); font-size: 1rem; line-height: 1.75; }
.doc section p + p { margin-top: 0.8rem; }
.doc section ul { padding-left: 1.3em; margin: 0.6rem 0; }
@media (max-width: 480px) { .rows li.is-next .who::after { display: none; } }