/* 心易 · 水墨山水主题(宣纸白·墨蓝灰·云雾留白) */
@import url('https://fonts.googleapis.com/css2?family=Geist:wght@400;500;600&family=Geist+Mono:wght@400;500&family=Ma+Shan+Zheng&family=Noto+Serif+SC:wght@500;600;700;900&display=swap');

:root {
  /* 米白宣纸 */
  --bg: #EDF1EF;            /* 米白 */
  --bg-2: #E1E8E7;          /* 略深分区/输入底 */
  --card: rgba(247, 249, 246, .88);          /* 暖米白卡 */
  /* 墨蓝灰文字(浓淡分层) */
  --ink: #26343B;           /* 墨褐·正文 */
  --ink-strong: #1F2B31;    /* 浓·标题 */
  --muted: #526872;         /* 淡褐 */
  --faint: #697B82;         /* 远褐(调深至 WCAG AA 4.8:1,原 #9C8C75 仅 2.7) */
  /* 木线 */
  --line: rgba(38, 52, 59, .16);
  --line-soft: rgba(38, 52, 59, .08);
  /* 主色=墨蓝灰,辅色=山岚青灰 */
  --accent: #26343B;        /* 胡桃木(标题/按钮/结构) */
  --accent-2: #486670;      /* 墨绿(小型强调) */
  --cinnabar: #A6402F;      /* 朱砂印(全站唯一暖色:印章/主CTA/focus/命宫) */
  --cinnabar-soft: rgba(166, 64, 47, .10);
  --gilt: #A8834C;          /* 金线(仅 hover 发丝线/分隔提亮,不做底色) */
  --green: #365A55; --ochre: #6F7D78; --dai: #4F6873; --bronze: #7B8B88;
  --glow: rgba(38, 52, 59, .16);
  --grad: linear-gradient(160deg, #1F2B31, #4F6873);  /* 浓→淡胡桃木 */
  /* 吉=墨绿 / 凶=赭石 */
  --good: #4E6B52; --good-bg: rgba(78,107,82,.12); --good-line: rgba(78,107,82,.34);
  --bad: #A85E33;  --bad-bg: rgba(168,94,51,.10);  --bad-line: rgba(168,94,51,.34);
  /* 动爻=朱砂 */
  --gold: #4F6873; --gold-glow: rgba(79,104,115,.34);
  /* 字体 */
  --sans: "Geist", -apple-system, "PingFang SC", "Noto Sans SC", system-ui, sans-serif;
  --serif: "Songti SC", "Noto Serif SC", "STSong", serif;
  --kai: "Ma Shan Zheng", "Kaiti SC", "STKaiti", "Noto Serif SC", serif; /* 书法 */
  --mono: "Geist Mono", ui-monospace, "SFMono-Regular", Menlo, Monaco, monospace;
  /* 圆角 */
  --r-card: 8px; --r-panel: 12px; --r-large: 22px; --r-pill: 999px;
  /* 阴影:水墨极淡 */
  --shadow: 0 1px 2px rgba(38,52,59,.05), 0 16px 40px -24px rgba(38,52,59,.24);
  --shadow-soft: 0 1px 2px rgba(38,52,59,.04), 0 10px 26px -16px rgba(38,52,59,.16);
  /* 墨韵动效 */
  --ease: cubic-bezier(.22,.61,.36,1);
  --dur-1: .18s; --dur-2: .32s; --dur-3: .56s;
  /* 玻璃 */
  --glass: rgba(250,251,249,.74);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0; color: var(--ink); background: var(--bg);
  font-family: var(--sans);
  line-height: 1.82; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  position: relative; overflow-x: hidden;
}
/* 宣纸纤维纹(极淡,盖在山水纱之上) */
body::before {
  content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: .3;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.28'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
}
/* 山水底 + 宣纸色纱(工作页含蓄透出;position:fixed 层替代 background-attachment:fixed,规避 iOS Safari 兼容坑) */
body::after {
  content: ""; position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background:
    linear-gradient(180deg,
      rgba(237,241,239,.44) 0%,
      rgba(237,241,239,.58) 34%,
      rgba(237,241,239,.76) 68%,
      rgba(237,241,239,.84) 100%),
    #EDF1EF url('/bg-xinyi-product.webp') center top / cover no-repeat;
}
a { color: inherit; }

/* 暖墨晕封面(工具页顶部;落地页用山水 hero 覆盖此层) */
.aurora {
  position: absolute; top: 0; left: 0; right: 0; height: 720px;
  z-index: -1; pointer-events: none; overflow: hidden;
}
.aurora::before, .aurora::after {
  content: ""; position: absolute; inset: -30% -14% 0;
  -webkit-mask-image: linear-gradient(to bottom, #000 50%, transparent 92%);
  mask-image: linear-gradient(to bottom, #000 50%, transparent 92%);
}
.aurora::before {
  background:
    radial-gradient(56% 46% at 50% 20%, rgba(248,243,233,.72), transparent 72%),  /* 米白透光 */
    radial-gradient(42% 50% at 84% 10%, rgba(38,52,59,.12), transparent 66%),     /* 胡桃木云 */
    radial-gradient(38% 46% at 14% 16%, rgba(38,52,59,.08), transparent 70%),     /* 远墨云 */
    radial-gradient(22% 30% at 66% 4%, rgba(79,104,115,.05), transparent 70%);     /* 朱砂晕 */
  filter: blur(58px);
}
.aurora::after {
  background:
    radial-gradient(30% 40% at 72% 24%, rgba(38,52,59,.10), transparent 72%),
    radial-gradient(22% 30% at 24% 8%, rgba(79,104,115,.05), transparent 70%);
  filter: blur(72px);
  animation: inkDrift 26s ease-in-out infinite alternate;
}
@keyframes inkDrift {
  from { transform: translate3d(0,0,0) scale(1); }
  to   { transform: translate3d(-3%,2%,0) scale(1.08); }
}
@media (prefers-reduced-motion: reduce) { .aurora::after { animation: none; } }

/* 鼠标墨迹拖尾画布 */
#ink-canvas {
  position: fixed; inset: 0; z-index: 60; pointer-events: none;
  mix-blend-mode: multiply;
}

/* ============================================================
   墨韵 Ink Luxe · 组件层(设计真源见 design-system/MASTER.md)
   ============================================================ */

/* ---- 玻璃卡 ---- */
.glass {
  background: var(--glass);
  -webkit-backdrop-filter: blur(14px) saturate(1.05);
  backdrop-filter: blur(14px) saturate(1.05);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
}
.glass.lift { transition: transform var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease), box-shadow var(--dur-2) var(--ease); }
.glass.lift:hover { transform: translateY(-3px); border-color: rgba(168,131,76,.44); box-shadow: var(--shadow); }

/* ---- 按钮体系 ---- */
.btn-ink, .btn-paper, .btn-ghost2 {
  position: relative; overflow: hidden; isolation: isolate;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 0 26px; border-radius: var(--r-pill);
  font-family: var(--serif); font-size: 15px; letter-spacing: 1.5px;
  cursor: pointer; user-select: none; text-decoration: none;
  transition: transform var(--dur-1) var(--ease), box-shadow var(--dur-2) var(--ease),
              background var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease), color var(--dur-1) var(--ease);
}
.btn-ink {
  background: var(--ink-strong); color: #F4F1EA; border: 1px solid transparent;
  box-shadow: 0 2px 10px -4px rgba(31,43,49,.5);
}
.btn-ink::before { /* 朱砂印点 */
  content: ""; width: 8px; height: 8px; border-radius: 50%;
  background: var(--cinnabar); box-shadow: 0 0 0 2px rgba(166,64,47,.22);
  flex: none;
}
.btn-ink::after { /* 光泽扫过 */
  content: ""; position: absolute; top: 0; bottom: 0; left: -70%; width: 46%;
  background: linear-gradient(100deg, transparent, rgba(255,255,255,.14), transparent);
  transform: skewX(-18deg); transition: left var(--dur-3) var(--ease); pointer-events: none;
}
.btn-ink:hover { transform: translateY(-1px); box-shadow: 0 6px 20px -6px rgba(31,43,49,.55); }
.btn-ink:hover::after { left: 120%; }
.btn-ink:active { transform: translateY(0) scale(.985); }
.btn-paper {
  background: rgba(250,251,249,.8); color: var(--ink); border: 1px solid var(--line);
}
.btn-paper:hover { background: rgba(38,52,59,.06); border-color: rgba(38,52,59,.3); }
.btn-ghost2 { background: transparent; color: var(--muted); border: 1px solid transparent; }
.btn-ghost2:hover { border-color: var(--line); color: var(--ink); }

/* 墨晕涟漪(fx.js 在按钮内注入 .ink-ripple span,动画结束自删) */
.ink-ripple {
  position: absolute; border-radius: 50%; pointer-events: none; z-index: -1;
  background: radial-gradient(circle, rgba(166,64,47,.30) 0%, rgba(166,64,47,.12) 40%, transparent 70%);
  transform: scale(0); animation: inkRipple .55s var(--ease) forwards;
}
.btn-ink .ink-ripple { background: radial-gradient(circle, rgba(255,255,255,.28) 0%, rgba(255,255,255,.10) 40%, transparent 70%); }
@keyframes inkRipple { to { transform: scale(1); opacity: 0; } }

/* loading 三墨点 */
.btn-ink.loading, .btn-paper.loading { pointer-events: none; opacity: .82; }
.btn-ink.loading::before { animation: inkBlink 1s infinite var(--ease); }
.ink-dots { display: inline-flex; gap: 6px; align-items: center; }
.ink-dots i {
  width: 6px; height: 6px; border-radius: 50%; background: var(--muted);
  animation: inkBounce 1.05s infinite var(--ease);
}
.ink-dots i:nth-child(2) { animation-delay: .14s; }
.ink-dots i:nth-child(3) { animation-delay: .28s; }
@keyframes inkBounce { 0%,100% { transform: translateY(0); opacity: .5; } 40% { transform: translateY(-4px); opacity: 1; } }
@keyframes inkBlink { 0%,100% { opacity: 1; } 50% { opacity: .35; } }

/* ---- 输入:朱砂扫线 ---- */
.field input, .field select, .field textarea,
input.inkline, select.inkline, textarea.inkline {
  background-image: linear-gradient(var(--cinnabar), var(--cinnabar));
  background-repeat: no-repeat; background-size: 0% 2px; background-position: left bottom;
  transition: background-size var(--dur-2) var(--ease), border-color var(--dur-1) var(--ease), box-shadow var(--dur-1) var(--ease);
}
.field input:focus, .field select:focus, .field textarea:focus,
input.inkline:focus, select.inkline:focus, textarea.inkline:focus {
  background-size: 100% 2px; outline: none;
  border-color: rgba(166,64,47,.45);
  box-shadow: 0 1px 0 0 rgba(166,64,47,.2);
}

/* ---- focus 可见环(全站) ---- */
:where(a, button, [role="button"], input, select, textarea, summary):focus-visible {
  outline: 2px solid var(--cinnabar); outline-offset: 2px; border-radius: 4px;
}

/* ---- 滚动显现 ---- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity var(--dur-2) var(--ease), transform var(--dur-2) var(--ease); transition-delay: var(--d, 0ms); will-change: opacity, transform; }
.reveal.in { opacity: 1; transform: none; }

/* ---- 印章落印 ---- */
.seal-pulse { animation: sealDrop .7s var(--ease) both; transform-origin: center; }
@keyframes sealDrop { 0% { opacity: 0; transform: scale(1.12); } 60% { opacity: 1; } 100% { opacity: 1; transform: scale(1); } }

/* ---- nav 玻璃霜化滚动态(fx.js 挂 .scrolled) ---- */
.nav-frost {
  -webkit-backdrop-filter: blur(12px) saturate(1.05);
  backdrop-filter: blur(12px) saturate(1.05);
  background: rgba(247,249,246,.66);
  border-bottom: 1px solid transparent;
  transition: background var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease), box-shadow var(--dur-2) var(--ease);
}
.nav-frost.scrolled { background: rgba(247,249,246,.86); border-bottom-color: var(--line-soft); box-shadow: 0 8px 24px -18px rgba(38,52,59,.28); }

/* ---- 通用微交互 ---- */
:where(a, button, [role="button"], .seg label, .zw-cell, .dao) { cursor: pointer; }

/* ---- reduced motion:全部静止 ---- */
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .seal-pulse { animation: none; }
  .btn-ink::after { display: none; }
  .ink-dots i { animation: none; }
  .glass.lift, .btn-ink, .btn-paper { transition: none; }
}