/* ============================================================
   势 · life.dcy.me — 全站统一样式
   与「迹」(a.dcy.me) 同源的设计体系：
   亮色 = 暖纸白 / 墨色；暗色 = 玄黑 / 宣纸白；强调色 = 朱砂
   行情语义色：红涨 / 绿跌（暗色沿用国内盘口标准，亮色加深）
   ============================================================ */

:root {
  --bg: #faf8f4;
  --surface: #ffffff;
  --fg: #211d18;
  --muted: #837b70;
  --line: #e8e2d8;
  --accent: #b0524a;
  --accent-soft: rgba(176, 82, 74, .12);
  --up: #c9392e;
  --down: #0b7d64;
  --shadow: 0 10px 30px rgba(33, 29, 24, .10);
  --shadow-lift: 0 18px 44px rgba(33, 29, 24, .16);
  --radius: 14px;
  --radius-s: 9px;
  --serif: "ZCOOL XiaoWei", "Songti SC", "STSong", "Noto Serif SC", "SimSun", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
          "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  --maxw: 1160px;
}

[data-theme="dark"] {
  --bg: #111013;
  --surface: #1a191d;
  --fg: #eae5dc;
  --muted: #97918a;
  --line: #2a2823;
  --accent: #cf7f6f;
  --accent-soft: rgba(207, 127, 111, .14);
  --up: #f23645;
  --down: #089981;
  --shadow: 0 10px 30px rgba(0, 0, 0, .45);
  --shadow-lift: 0 18px 44px rgba(0, 0, 0, .55);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  transition: background .35s ease, color .35s ease;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

::selection { background: var(--accent); color: #fff; }

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--accent); color: #fff; padding: 8px 14px;
  border-radius: 0 0 8px 0; z-index: 99;
}
.skip:focus { left: 0; }

.serif { font-family: var(--serif); }
.muted { color: var(--muted); }

/* ---------- 顶栏 ---------- */

.topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px clamp(18px, 5vw, 48px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.brand {
  font-family: var(--serif);
  font-size: 30px; font-weight: 700; line-height: 1;
  letter-spacing: .05em;
}
.brand-dot {
  display: inline-block; width: 7px; height: 7px; margin-left: 3px;
  background: var(--accent); border-radius: 50%;
}

.topnav { display: flex; align-items: center; gap: clamp(12px, 2.6vw, 24px); }
.topnav a {
  font-family: var(--serif); font-size: 17px; line-height: 1;
  color: var(--muted); transition: color .2s;
}
.topnav a:hover { color: var(--accent); }
.topnav a.active { color: var(--fg); }

.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border: 1px solid var(--line);
  border-radius: 50%; background: var(--surface); color: var(--fg);
  cursor: pointer; transition: transform .2s, border-color .2s;
}
.icon-btn:hover { transform: scale(1.08); border-color: var(--accent); }

[data-theme="light"] .i-moon { display: none; }
[data-theme="dark"] .i-sun { display: none; }

/* ---------- 通用容器与页头 ---------- */

.wrap {
  max-width: var(--maxw); margin: 0 auto;
  padding: 0 clamp(18px, 5vw, 48px);
}

.page-head { text-align: center; padding: clamp(30px, 6vh, 60px) 20px 10px; }
.page-char {
  font-family: var(--serif); color: var(--accent);
  font-size: clamp(15px, 2.4vw, 18px); letter-spacing: .5em; margin: 0 0 8px;
}
.page-title {
  font-family: var(--serif); font-weight: 700;
  font-size: clamp(32px, 6vw, 54px);
  margin: 0; letter-spacing: .06em;
}
.page-sub { color: var(--muted); font-size: 14.5px; margin: 12px 0 0; letter-spacing: .04em; }
.page-quote {
  font-family: var(--serif); color: var(--muted);
  font-size: 14px; letter-spacing: .3em; margin: 16px 0 0;
}
.page-quote::before, .page-quote::after { content: "·"; color: var(--accent); margin: 0 .8em; }

/* ---------- 卡片 ---------- */

.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform .35s cubic-bezier(.2, .7, .3, 1), box-shadow .35s, border-color .35s;
}
.card-pad { padding: clamp(18px, 3vw, 28px); }
.card.hoverable:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lift);
}

/* ---------- 按钮 / 筛选 ---------- */

.btn {
  display: inline-block; padding: 9px 22px;
  border: 1px solid var(--accent); color: var(--accent);
  border-radius: 999px; background: transparent; cursor: pointer;
  font-size: 14px; font-family: inherit;
  transition: background .25s, color .25s;
}
.btn:hover { background: var(--accent); color: #fff; }
.btn-solid {
  background: var(--accent); color: #fff;
}
.btn-solid:hover { background: var(--accent); opacity: .88; color: #fff; }
.btn-ghost { border-color: var(--line); color: var(--muted); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); background: transparent; }

.pill-group { display: inline-flex; background: var(--surface); border: 1px solid var(--line); border-radius: 999px; padding: 4px; gap: 2px; }
.pill {
  padding: 7px 18px; border-radius: 999px; font-size: 13.5px;
  color: var(--muted); transition: background .2s, color .2s;
}
.pill:hover { color: var(--fg); }
.pill.active { background: var(--accent); color: #fff; }

/* 模块内子导航 */
.subnav {
  display: flex; flex-wrap: wrap; gap: 8px; justify-content: center;
  padding: 6px 20px 0;
}
.subnav a {
  font-size: 13px; color: var(--muted); padding: 6px 14px;
  border: 1px solid var(--line); border-radius: 999px;
  transition: border-color .25s, color .25s;
}
.subnav a:hover { border-color: var(--accent); color: var(--accent); }
.subnav a.active { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }

/* ---------- 统计块 ---------- */

.stat { text-align: center; }
.stat-label { font-size: 12px; color: var(--muted); letter-spacing: .08em; margin-bottom: 6px; }
.stat-value { font-size: clamp(22px, 4vw, 30px); font-weight: 700; font-variant-numeric: tabular-nums; line-height: 1.2; }
.stat-value.up { color: var(--up); }
.stat-value.down { color: var(--down); }
.stat-note { font-size: 12px; color: var(--muted); margin-top: 4px; }

/* ---------- 表单 ---------- */

label { display: block; margin-bottom: 8px; font-size: 13.5px; color: var(--muted); letter-spacing: .03em; }
input[type="text"], input[type="date"], input[type="email"], input[type="number"], select, textarea {
  width: 100%; padding: 12px 14px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius-s); color: var(--fg);
  font-size: 15px; font-family: inherit;
  transition: border-color .2s, box-shadow .2s;
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
input[type="range"] { width: 100%; accent-color: var(--accent); cursor: pointer; }
textarea { resize: vertical; }
.field { margin-bottom: 22px; }

/* ---------- 提示条 ---------- */

.alert { padding: 12px 16px; border-radius: var(--radius-s); margin-bottom: 18px; font-size: 14px; text-align: center; border: 1px solid var(--line); background: var(--surface); }
.alert.success { border-color: color-mix(in srgb, var(--down) 40%, var(--line)); color: var(--down); background: color-mix(in srgb, var(--down) 7%, var(--surface)); }
.alert.error { border-color: color-mix(in srgb, var(--up) 40%, var(--line)); color: var(--up); background: color-mix(in srgb, var(--up) 7%, var(--surface)); }

/* ---------- 页脚 ---------- */

.footer {
  border-top: 1px solid var(--line);
  text-align: center; padding: 44px 20px 54px; color: var(--muted);
}
.footer-quote { font-family: var(--serif); letter-spacing: .2em; margin: 0; font-size: 15px; }
.footer-quote small { display: block; margin-top: 6px; font-size: 12px; letter-spacing: .1em; }
.footer-links { margin: 18px 0 0; }
.footer-links a { margin: 0 10px; font-size: 13.5px; transition: color .2s; }
.footer-links a:hover { color: var(--accent); }
.footer-copy { margin: 14px 0 0; font-size: 12px; }

/* ---------- 进场动画 ---------- */

.js .reveal {
  opacity: 0; transform: translateY(16px);
  transition: opacity .65s ease, transform .65s cubic-bezier(.2, .7, .3, 1);
}
.js .reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  * { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

/* ---------- 小屏 ---------- */

@media (max-width: 640px) {
  .topbar { padding: 12px 16px; }
}

/* ---------- 子导航分组（首行模块入口，次行子页面） ---------- */

.subnav-rows { display: flex; flex-direction: column; align-items: center; gap: 2px; }
.subnav-rows .subnav { padding: 3px 20px; }
.subnav-solo a { display: inline-block; min-width: 11em; text-align: center; }