@charset "utf-8";
/* ==========================================================================
   溪溪实用工具 · 首页（佛经目录）
   宣纸经卷风
   ========================================================================== */

:root {
  --paper:      #f3ebdb;
  --paper-2:    #faf5ea;
  --paper-3:    #ece1ca;
  --ink:        #2b241c;
  --ink-2:      #574a3a;
  --ink-3:      #8b7b62;
  --ink-4:      #a8977c;
  --line:       #dccdac;
  --line-2:     #c9b68e;
  --cinnabar:   #a03027;
  --cinnabar-2: #c04a3c;
  --cinnabar-w: rgba(160, 48, 39, .10);
  --gold:       #9d7f3c;
  --font-text:  "Songti SC", "STSong", "SimSun", "Source Han Serif SC", "Noto Serif SC", serif;
  --font-ui:    "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
  --sh-1:       0 1px 2px rgba(74, 56, 24, .05), 0 8px 24px rgba(74, 56, 24, .07);
  --sh-2:       0 2px 6px rgba(74, 56, 24, .07), 0 16px 40px rgba(74, 56, 24, .10);
  --r:          12px;
  --ease:       cubic-bezier(.22, .68, .36, 1);
}

html[data-theme="night"] {
  --paper:      #15140f;
  --paper-2:    #1e1c15;
  --paper-3:    #262318;
  --ink:        #ddd2b9;
  --ink-2:      #b4a68b;
  --ink-3:      #8a7c63;
  --ink-4:      #6b5f4b;
  --line:       #383226;
  --line-2:     #4a4232;
  --cinnabar:   #d4665a;
  --cinnabar-2: #e0796c;
  --cinnabar-w: rgba(212, 102, 90, .14);
  --gold:       #c3a566;
  --sh-1:       0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px rgba(0, 0, 0, .38);
  --sh-2:       0 2px 6px rgba(0, 0, 0, .5), 0 16px 40px rgba(0, 0, 0, .45);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-text);
  font-size: 16px;
  line-height: 1.7;
  background-image:
    repeating-linear-gradient(52deg,  rgba(150, 122, 74, .022) 0 1px, transparent 1px 5px),
    repeating-linear-gradient(-38deg, rgba(150, 122, 74, .018) 0 1px, transparent 1px 7px);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 1160px; margin: 0 auto; padding: 0 22px 90px; }

/* ============================ 页头 ============================ */
.hd {
  position: relative;
  padding: 62px 0 40px;
  text-align: center;
}
.hd::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 22px;
  width: 78px; height: 1px;
  margin-left: -39px;
  background: linear-gradient(90deg, transparent, var(--line-2), transparent);
}
.hd__seal {
  display: inline-grid;
  place-items: center;
  width: 56px; height: 56px;
  margin-bottom: 20px;
  border: 1.6px solid var(--cinnabar);
  border-radius: 6px;
  color: var(--cinnabar);
  font-family: var(--font-text);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: .1em;
  text-indent: .1em;
  opacity: .88;
  transform: rotate(-2deg);
  user-select: none;
}
.hd__ttl {
  margin: 0;
  font-size: clamp(27px, 5vw, 40px);
  font-weight: 700;
  letter-spacing: .2em;
  text-indent: .2em;
  line-height: 1.35;
}
.hd__sub {
  margin: 14px 0 0;
  color: var(--ink-3);
  font-family: var(--font-ui);
  font-size: 13.5px;
  letter-spacing: .18em;
}
.hd__stat {
  margin-top: 22px;
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 10px;
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--ink-3);
}
.hd__stat span {
  padding: 4px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--paper-2) 70%, transparent);
}
@supports not (background: color-mix(in srgb, red 50%, blue)) {
  .hd__stat span { background: var(--paper-2); }
}
.hd__stat b { color: var(--cinnabar); font-weight: 700; }

/* 夜间/日间切换 */
.theme-btn {
  position: absolute;
  top: 20px; right: 0;
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--paper-2);
  color: var(--ink-2);
  cursor: pointer;
  transition: all .18s var(--ease);
}
.theme-btn:hover { color: var(--cinnabar); border-color: var(--cinnabar); }
.theme-btn svg { width: 17px; height: 17px; }

/* ============================ 区块标题 ============================ */
.sec { margin-top: 54px; }
.sec__hd {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.sec__hd h2 {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: .12em;
}
.sec__hd h2::before {
  content: "";
  display: inline-block;
  width: 4px; height: 15px;
  margin-right: 10px;
  border-radius: 2px;
  background: var(--cinnabar);
  vertical-align: -2px;
}
.sec__hd em {
  font-style: normal;
  color: var(--ink-4);
  font-family: var(--font-ui);
  font-size: 12px;
  letter-spacing: .04em;
}

/* ============================ 工具卡 ============================ */
.tools {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(158px, 1fr));
  gap: 12px;
}
.tool {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: 16px 16px 15px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--paper-2);
  color: var(--ink);
  text-decoration: none;
  box-shadow: var(--sh-1);
  overflow: hidden;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}
.tool::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--cinnabar);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .26s var(--ease);
}
.tool:hover {
  transform: translateY(-2px);
  box-shadow: var(--sh-2);
  border-color: var(--line-2);
}
.tool:hover::before { transform: scaleY(1); }
.tool__nm {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .05em;
}
.tool__ds {
  color: var(--ink-4);
  font-family: var(--font-ui);
  font-size: 11.5px;
  letter-spacing: .02em;
}
.tool__ext { color: var(--ink-4); position: absolute; top: 13px; right: 13px; }
.tool__ext svg { width: 12px; height: 12px; }

/* ============================ 模块卡（白话佛经） ============================ */
.mods { display: grid; gap: 12px; }
.mod {
  position: relative;
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 22px 24px;
  border: 1px solid var(--line-2);
  border-radius: var(--r);
  background:
    linear-gradient(135deg, var(--paper-2) 0%, var(--paper-3) 100%);
  color: var(--ink);
  text-decoration: none;
  box-shadow: var(--sh-1);
  overflow: hidden;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}
.mod::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--cinnabar);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .28s var(--ease);
}
.mod:hover {
  transform: translateY(-2px);
  box-shadow: var(--sh-2);
  border-color: var(--cinnabar);
}
.mod:hover::before { transform: scaleY(1); }
.mod__seal {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 58px; height: 58px;
  border: 1.6px solid var(--cinnabar);
  border-radius: 6px;
  color: var(--cinnabar);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  opacity: .9;
  transform: rotate(-2deg);
  user-select: none;
}
.mod__main { flex: 1 1 auto; min-width: 0; }
.mod__ttl {
  display: block;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: .12em;
}
.mod__ds {
  display: block;
  margin-top: 6px;
  color: var(--ink-3);
  font-family: var(--font-ui);
  font-size: 12.5px;
  line-height: 1.75;
  letter-spacing: .02em;
}
.mod__stat {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 12px;
  font-family: var(--font-ui);
  font-size: 11.5px;
  color: var(--ink-3);
}
.mod__stat span {
  padding: 3px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--paper-2) 75%, transparent);
}
@supports not (background: color-mix(in srgb, red 50%, blue)) {
  .mod__stat span { background: var(--paper-2); }
}
.mod__stat b { color: var(--cinnabar); font-weight: 700; }
.mod__go {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--cinnabar);
  color: #fff;
  font-family: var(--font-ui);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: .06em;
  white-space: nowrap;
  transition: background .18s var(--ease);
}
.mod:hover .mod__go { background: var(--cinnabar-2); }
.mod__go svg { width: 14px; height: 14px; }

/* ============================ 目录工具条 ============================ */
.cat-bar {
  position: sticky;
  top: 0;
  z-index: 30;
  margin: 0 -22px 22px;
  padding: 14px 22px 12px;
  background: color-mix(in srgb, var(--paper) 90%, transparent);
  backdrop-filter: saturate(1.4) blur(12px);
  -webkit-backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s;
}
@supports not (background: color-mix(in srgb, red 50%, blue)) {
  .cat-bar { background: var(--paper); }
}
.cat-bar.is-stuck { border-bottom-color: var(--line); }

.cat-search {
  position: relative;
  max-width: 520px;
  margin: 0 auto 12px;
}
.cat-search input {
  width: 100%;
  height: 44px;
  padding: 0 42px 0 42px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  background: var(--paper-2);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 14.5px;
  outline: none;
  box-shadow: var(--sh-1);
  transition: border-color .18s, box-shadow .18s;
}
.cat-search input::placeholder { color: var(--ink-4); }
.cat-search input:focus {
  border-color: var(--cinnabar);
  box-shadow: 0 0 0 3px var(--cinnabar-w), var(--sh-1);
}
.cat-search__ic {
  position: absolute;
  left: 15px; top: 50%;
  transform: translateY(-50%);
  color: var(--ink-4);
  pointer-events: none;
}
.cat-search__ic svg { width: 17px; height: 17px; display: block; }
.cat-search__clr {
  position: absolute;
  right: 9px; top: 50%;
  transform: translateY(-50%);
  width: 28px; height: 28px;
  display: none;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--ink-4);
  cursor: pointer;
}
.cat-search__clr:hover { background: var(--paper-3); color: var(--ink); }
.cat-search.has-val .cat-search__clr { display: grid; }
.cat-search__clr svg { width: 14px; height: 14px; }

.cat-chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 7px;
}
.chip {
  padding: 5px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper-2);
  color: var(--ink-2);
  font-family: var(--font-ui);
  font-size: 12.5px;
  cursor: pointer;
  white-space: nowrap;
  transition: all .16s var(--ease);
}
.chip:hover { border-color: var(--line-2); color: var(--ink); }
.chip[aria-pressed="true"] {
  background: var(--cinnabar);
  border-color: var(--cinnabar);
  color: #fff;
  font-weight: 600;
}
.chip em {
  font-style: normal;
  margin-left: 5px;
  opacity: .6;
  font-size: 11px;
}

/* ============================ 经文分组 ============================ */
.grp { margin-bottom: 30px; }
.grp[hidden] { display: none; }
.grp__hd {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 13px;
  cursor: pointer;
  user-select: none;
}
.grp__hd h3 {
  margin: 0;
  font-size: 15.5px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--ink);
}
.grp__hd em {
  font-style: normal;
  padding: 1px 8px;
  border-radius: 999px;
  background: var(--cinnabar-w);
  color: var(--cinnabar);
  font-family: var(--font-ui);
  font-size: 11px;
}
.grp__hd i {
  flex: 1 1 auto;
  height: 1px;
  background: var(--line);
}
.grp__hd svg {
  width: 15px; height: 15px;
  color: var(--ink-4);
  transition: transform .22s var(--ease);
}
.grp.is-folded .grp__hd svg { transform: rotate(-90deg); }
.grp.is-folded .grp__list { display: none; }

.grp__list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(178px, 1fr));
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.sutra {
  position: relative;
  display: block;
  padding: 11px 14px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--paper-2);
  color: var(--ink);
  text-decoration: none;
  transition: all .17s var(--ease);
}
.sutra:hover {
  border-color: var(--cinnabar);
  background: var(--cinnabar-w);
  transform: translateY(-1px);
}
.sutra__nm {
  display: block;
  font-size: 15.5px;
  font-weight: 600;
  letter-spacing: .03em;
  line-height: 1.45;
}
.sutra__nm i {
  font-style: normal;
  color: var(--cinnabar);
  opacity: .62;
  font-size: .82em;
  letter-spacing: 0;
}
.sutra__mt {
  display: block;
  margin-top: 4px;
  color: var(--ink-4);
  font-family: var(--font-ui);
  font-size: 11px;
  letter-spacing: .02em;
}
.sutra__mt b { color: var(--ink-3); font-weight: 600; }
.sutra.is-hit .sutra__nm u {
  background: var(--cinnabar-w);
  text-decoration: none;
  box-shadow: 0 0 0 1px var(--cinnabar) inset;
  border-radius: 3px;
}

/* 空态 */
.empty {
  display: none;
  padding: 60px 20px;
  text-align: center;
  color: var(--ink-4);
  font-family: var(--font-ui);
  font-size: 14px;
}
.empty.is-show { display: block; }
.empty__big { font-size: 30px; margin-bottom: 12px; opacity: .5; }

/* ============================ 页脚 ============================ */
.ft {
  margin-top: 66px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
  text-align: center;
  color: var(--ink-4);
  font-family: var(--font-ui);
  font-size: 12px;
  line-height: 2;
}
.ft a { color: var(--ink-3); text-decoration: none; border-bottom: 1px dotted var(--line-2); }
.ft a:hover { color: var(--cinnabar); }
.ft__quote {
  margin: 0 auto 16px;
  max-width: 640px;
  color: var(--ink-3);
  font-family: var(--font-text);
  font-size: 13.5px;
  line-height: 2.05;
  letter-spacing: .04em;
}
.ft__quote span { color: var(--cinnabar); }

/* ============================ 响应式 ============================ */
@media (max-width: 720px) {
  .wrap { padding: 0 15px 70px; }
  .hd { padding: 44px 0 32px; }
  .hd__seal { width: 48px; height: 48px; font-size: 16px; margin-bottom: 15px; }
  .theme-btn { top: 12px; right: 0; }
  .cat-bar { margin-left: -15px; margin-right: -15px; padding-left: 15px; padding-right: 15px; }
  .cat-chips { justify-content: flex-start; flex-wrap: nowrap; overflow-x: auto; padding-bottom: 3px; scrollbar-width: none; }
  .cat-chips::-webkit-scrollbar { display: none; }
  .grp__list { grid-template-columns: repeat(auto-fill, minmax(146px, 1fr)); gap: 8px; }
  .sutra { padding: 10px 12px; }
  .sutra__nm { font-size: 14.5px; }
  /* 移动端工具区收成 3 列，避免把佛经目录挤出首屏太远 */
  .tools { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .tool { padding: 11px 10px; gap: 4px; }
  .tool__nm { font-size: 14px; }
  .tool__ds { font-size: 10.5px; }
  .tool__ext { display: none; }
  /* 模块卡改竖排 */
  .mod { flex-direction: column; align-items: flex-start; gap: 14px; padding: 18px 16px; }
  .mod__seal { width: 46px; height: 46px; font-size: 21px; }
  .mod__ttl { font-size: 18px; }
  .mod__go { align-self: stretch; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}