/* ============================================================
   老版新葡萄8883 · 共享样式表 /assets/site.css
   ============================================================ */

:root{
  --grape:#4A2A5E;
  --grape-mid:#7C4E9E;
  --grape-soft:#5B3572;
  --paper:#F5F2EC;
  --vine:#17362E;
  --frost:#C7C4CC;
  --amber:#D19A3C;
  --ink:#15131A;
  --mist:#E6DFEE;
  --moss:#3F6B58;
  --brick:#A85A2B;

  --wrap:1240px;
  --rail:220px;

  --mono:"JetBrains Mono","Roboto Mono","SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  --serif:"Songti SC","Source Han Serif SC","Noto Serif CJK SC",SimSun,"Times New Roman",serif;

  --ease:cubic-bezier(.2,.6,.2,1);
  --shadow-1:0 1px 2px rgba(21,19,26,.05),0 10px 28px -22px rgba(21,19,26,.5);
}

*,*::before,*::after{box-sizing:border-box}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  background:var(--paper);
}

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img,svg{max-width:100%}
img{height:auto}

h1,h2,h3{
  font-family:var(--serif);
  font-weight:700;
  letter-spacing:-.01em;
  line-height:1.22;
  color:var(--grape);
  margin:0 0 .6em;
}
h1{font-size:clamp(38px,6.2vw,72px);line-height:1.06}
h2{font-size:clamp(26px,3.4vw,34px)}
h3{font-size:20px}
h4{
  font-family:var(--sans);
  font-size:16px;
  font-weight:700;
  letter-spacing:.02em;
  margin:0 0 .5em;
  color:var(--vine);
}

p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}

a{color:var(--grape-mid);text-underline-offset:3px}
a:hover{color:var(--amber)}

ul,ol{margin:0 0 1.2em;padding-left:1.3em}

::selection{background:rgba(209,154,60,.34);color:var(--ink)}

:focus-visible{
  outline:2px solid var(--amber);
  outline-offset:2px;
  border-radius:2px;
}

/* ---------- 骨架与容器 ---------- */

.wrap{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:768px){
  .wrap{padding:0 32px}
}

.prose{
  max-width:38em;
  font-size:17px;
}
.prose p{margin-bottom:1.2em}
.prose h3{margin-top:1.8em;margin-bottom:.5em}

.rule{
  border:0;
  border-top:1px solid var(--frost);
  margin:32px 0;
}
.rule--dark{border-top-color:rgba(245,242,236,.16)}

.grid{display:grid;gap:24px}
.grid--2{grid-template-columns:minmax(0,1fr)}
.grid--3{grid-template-columns:minmax(0,1fr)}
@media (min-width:768px){
  .grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:1100px){
  .grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
  .grid{gap:32px}
}

/* ---------- 非对称：记录带 + 主区 ---------- */

.rail-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:28px;
}
@media (min-width:960px){
  .rail-layout{
    grid-template-columns:var(--rail) minmax(0,1fr);
    gap:56px;
    align-items:start;
  }
}

.record-rail{
  border-left:1px solid var(--frost);
  padding-left:16px;
  font-size:13px;
  line-height:1.7;
}
@media (min-width:960px){
  .record-rail{position:sticky;top:110px}
}
.rail-title{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--vine);
  margin:0 0 14px;
}
.rail-list{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.rail-item{
  display:flex;
  flex-direction:column;
  gap:3px;
  padding-bottom:10px;
  border-bottom:1px dashed var(--frost);
  transition:border-color .16s var(--ease);
}
.rail-item:hover{border-bottom-color:var(--amber)}
.rail-key{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--grape);
}
.rail-val{
  color:var(--ink);
  opacity:.8;
  font-size:13px;
}

/* ---------- 区块头 / 索引行 ---------- */

.section-head{
  display:flex;
  align-items:baseline;
  gap:16px;
  flex-wrap:wrap;
  padding-bottom:12px;
  border-bottom:1px solid var(--frost);
  margin:0 0 24px;
}
.section-head .idx{
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.1em;
  color:var(--amber);
}
.section-head h2{
  margin:0;
  font-size:clamp(24px,3vw,34px);
}
.section-head .sub{
  margin-left:auto;
  font-size:13px;
  font-family:var(--mono);
  letter-spacing:.06em;
  color:var(--ink);
  opacity:.6;
}

.idx-list{
  list-style:none;
  margin:0;
  padding:0;
  border-top:1px solid var(--frost);
}
.idx-list > li{
  display:grid;
  grid-template-columns:minmax(84px,auto) minmax(0,1fr);
  gap:6px 16px;
  align-items:baseline;
  padding:14px 6px;
  border-bottom:1px solid var(--frost);
  transition:background .16s var(--ease),padding-left .16s var(--ease);
}
.idx-list > li:hover{
  background:var(--mist);
  padding-left:12px;
}
.idx-code{
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.08em;
  color:var(--grape);
}
@media (min-width:768px){
  .idx-list > li{grid-template-columns:120px minmax(0,1fr) auto}
}

/* ---------- 文字与状态工具 ---------- */

.mono{
  font-family:var(--mono);
  letter-spacing:.08em;
  font-size:13px;
}

.tag{
  display:inline-block;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.06em;
  line-height:1.6;
  padding:3px 8px;
  border-radius:2px;
  border:1px solid var(--frost);
  color:var(--ink);
  background:rgba(255,255,255,.55);
}
.tag--live{
  color:var(--moss);
  border-color:rgba(63,107,88,.45);
  background:rgba(63,107,88,.1);
}
.tag--amber{
  color:#8A6318;
  border-color:rgba(209,154,60,.55);
  background:rgba(209,154,60,.16);
}
.tag--due{
  color:var(--brick);
  border-color:rgba(168,90,43,.45);
  background:rgba(168,90,43,.1);
}

.tick-link{
  color:inherit;
  text-decoration:none;
  border-bottom:2px solid var(--frost);
  transition:border-color .16s var(--ease),color .16s var(--ease);
}
.tick-link:hover{
  color:var(--grape);
  border-bottom-color:var(--amber);
}

/* ---------- 按钮 ---------- */

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:12px 20px;
  border-radius:2px;
  border:1px solid transparent;
  background:transparent;
  color:inherit;
  font-family:var(--sans);
  font-size:15px;
  line-height:1;
  letter-spacing:.04em;
  text-decoration:none;
  cursor:pointer;
  transition:background .16s var(--ease),border-color .16s var(--ease),color .16s var(--ease);
}
.btn--primary{
  background:var(--grape);
  border-color:var(--grape);
  color:var(--paper);
}
.btn--primary:hover{background:var(--grape-soft);color:var(--paper)}
.btn--ghost{
  border-color:var(--grape);
  color:var(--grape);
}
.btn--ghost:hover{background:var(--grape);color:var(--paper)}
.btn--amber{
  border-color:var(--amber);
  color:var(--ink);
  background:rgba(209,154,60,.16);
}
.btn--amber:hover{background:var(--amber);color:var(--ink)}

/* ---------- 面包屑 ---------- */

.breadcrumb{
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.06em;
  color:var(--ink);
  opacity:.72;
  margin:0 0 18px;
}
.breadcrumb ol{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  gap:6px;
  margin:0;
  padding:0;
}
.breadcrumb li{display:flex;gap:6px;align-items:center}
.breadcrumb li + li::before{content:"/";color:var(--frost)}
.breadcrumb a{color:var(--vine);text-decoration:none}
.breadcrumb a:hover{color:var(--amber);text-decoration:underline}

/* ---------- 图片 / 图形容器 ---------- */

.frame{
  position:relative;
  overflow:hidden;
  border:1px solid rgba(199,196,204,.75);
  border-radius:2px;
  background:var(--vine);
  box-shadow:var(--shadow-1);
}
.frame > img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:center;
  filter:saturate(.96) contrast(1.04);
}
.frame--16x9{aspect-ratio:16 / 9}
.frame--4x3{aspect-ratio:4 / 3}
.frame--1x1{aspect-ratio:1 / 1}
.frame--21x9{aspect-ratio:21 / 9}
.frame--portrait{aspect-ratio:3 / 4}

.frame-caption{
  margin:8px 0 0;
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.06em;
  color:var(--ink);
  opacity:.62;
}

.placeholder{
  display:flex;
  align-items:center;
  justify-content:center;
  width:100%;
  height:100%;
  min-height:140px;
  color:rgba(245,242,236,.5);
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.14em;
  background:
    radial-gradient(120% 90% at 22% 16%,rgba(124,78,158,.55),transparent 62%),
    radial-gradient(90% 80% at 84% 88%,rgba(63,107,88,.5),transparent 60%),
    var(--vine);
}

/* ---------- 葡萄藤曲线 ---------- */

[data-vine]{
  display:block;
  width:100%;
  height:auto;
  pointer-events:none;
}
[data-vine] path{
  fill:none;
  stroke:var(--grape-mid);
  stroke-width:1.25;
  stroke-linecap:round;
  stroke-dasharray:2600;
  stroke-dashoffset:2600;
  opacity:.55;
}
[data-vine].is-grown path{
  stroke-dashoffset:0;
  transition:stroke-dashoffset .9s var(--ease);
}

/* ---------- 滚动显现 / 进度 ---------- */

.scroll-progress{
  position:fixed;
  top:0;
  left:0;
  height:2px;
  width:0;
  z-index:200;
  pointer-events:none;
  background:linear-gradient(90deg,var(--amber),var(--grape-mid));
}

html.js [data-reveal]{
  opacity:0;
  transform:translateY(13px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
html.js [data-reveal].is-in{
  opacity:1;
  transform:none;
}

/* ---------- 跳过链接 ---------- */

.skip-link{
  position:absolute;
  left:12px;
  top:-64px;
  z-index:300;
  padding:10px 16px;
  background:var(--amber);
  color:var(--ink);
  font-size:14px;
  line-height:1;
  text-decoration:none;
  border-radius:2px;
  transition:top .16s var(--ease);
}
.skip-link:focus{top:12px;color:var(--ink)}

/* ============================================================
   页头
   ============================================================ */

.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:var(--grape);
  color:var(--paper);
  border-bottom:1px solid rgba(245,242,236,.16);
  box-shadow:0 12px 34px -28px rgba(21,19,26,.95);
}

.header-tick{
  height:6px;
  background-image:repeating-linear-gradient(90deg,rgba(209,154,60,.5) 0 1px,transparent 1px 14px);
  border-bottom:1px solid rgba(245,242,236,.1);
}

.header-inner{
  max-width:var(--wrap);
  margin:0 auto;
  padding:14px 20px 16px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 20px;
}
@media (min-width:960px){
  .header-inner{
    flex-wrap:nowrap;
    gap:32px;
    padding:0 32px;
    min-height:78px;
  }
}

.brand{
  flex:1 1 auto;
  min-width:0;
}
@media (min-width:960px){
  .brand{flex:0 0 auto}
}

.brand-mark{
  display:inline-flex;
  align-items:center;
  gap:12px;
  padding:4px 2px;
  color:inherit;
  text-decoration:none;
  border-radius:2px;
}
.brand-glyph{
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.12em;
  line-height:1;
  padding:6px 7px;
  color:var(--amber);
  border:1px solid rgba(209,154,60,.55);
  border-radius:2px;
  transition:border-color .16s var(--ease),background .16s var(--ease);
}
.brand-mark:hover .brand-glyph{
  border-color:var(--amber);
  background:rgba(209,154,60,.14);
}
.brand-text{
  display:flex;
  flex-direction:column;
  gap:2px;
  min-width:0;
}
.brand-name{
  font-family:var(--serif);
  font-size:17px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--paper);
  white-space:nowrap;
}
.brand-tagline{
  font-size:12px;
  letter-spacing:.04em;
  color:rgba(245,242,236,.6);
  white-space:nowrap;
}
@media (max-width:560px){
  .brand-tagline{display:none}
}

.nav-toggle{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:9px 12px;
  background:transparent;
  color:var(--paper);
  border:1px solid rgba(245,242,236,.3);
  border-radius:2px;
  font-family:var(--sans);
  font-size:13px;
  letter-spacing:.06em;
  cursor:pointer;
  transition:border-color .16s var(--ease),background .16s var(--ease);
}
.nav-toggle:hover{
  border-color:var(--amber);
  background:rgba(209,154,60,.12);
}
.nav-toggle-bars{
  display:inline-flex;
  flex-direction:column;
  gap:3px;
  width:14px;
}
.nav-toggle-bars i{
  display:block;
  height:1px;
  background:currentColor;
  transition:transform .16s var(--ease),opacity .16s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(1){transform:translateY(4px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(3){transform:translateY(-4px) rotate(-45deg)}
.nav-toggle-label{white-space:nowrap}

.site-nav{
  flex:1 1 100%;
  order:3;
  display:none;
  padding-top:8px;
  margin-top:4px;
  border-top:1px solid rgba(245,242,236,.16);
}
.site-nav[data-open="true"]{display:block}

.nav-list{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
}
.nav-list li{border-bottom:1px solid rgba(245,242,236,.08)}
.nav-list li:last-child{border-bottom:0}
.nav-list a{
  display:flex;
  align-items:baseline;
  gap:10px;
  padding:13px 4px;
  color:rgba(245,242,236,.82);
  font-size:16px;
  text-decoration:none;
  border-left:2px solid transparent;
  transition:color .16s var(--ease),background .16s var(--ease),border-color .16s var(--ease);
}
.nav-idx{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.08em;
  color:rgba(209,154,60,.75);
}
.nav-list a:hover{
  color:#fff;
  background:rgba(245,242,236,.07);
}
.nav-list a[aria-current="page"]{
  color:#fff;
  border-left-color:var(--amber);
  background:rgba(209,154,60,.12);
}

.header-meta{display:none}

@media (min-width:960px){
  .nav-toggle{display:none}
  .site-nav{
    display:block;
    order:0;
    flex:1 1 auto;
    padding-top:0;
    margin-top:0;
    border-top:0;
  }
  .site-nav[data-open="false"],
  .site-nav[data-open="true"]{display:block}
  .nav-list{
    flex-direction:row;
    justify-content:center;
    gap:2px;
  }
  .nav-list li{border-bottom:0}
  .nav-list a{
    padding:10px 12px;
    border-left:0;
    border-bottom:2px solid transparent;
    font-size:15px;
  }
  .nav-list a:hover{background:transparent}
  .nav-list a[aria-current="page"]{
    background:transparent;
    border-left-color:transparent;
    border-bottom-color:var(--amber);
  }
  .header-meta{
    display:flex;
    align-items:center;
    gap:14px;
    flex:0 0 auto;
  }
}

.meta-pill{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--amber);
  padding:5px 11px;
  border:1px solid rgba(209,154,60,.5);
  border-radius:999px;
  white-space:nowrap;
}
.meta-stamp{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.08em;
  color:rgba(245,242,236,.62);
  white-space:nowrap;
}

/* ============================================================
   页脚
   ============================================================ */

.site-footer{
  background:var(--vine);
  color:rgba(245,242,236,.78);
  margin-top:80px;
}

.footer-tick{
  height:6px;
  background-image:repeating-linear-gradient(90deg,rgba(209,154,60,.45) 0 1px,transparent 1px 14px);
}

.footer-inner{
  max-width:var(--wrap);
  margin:0 auto;
  padding:44px 20px 28px;
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:32px;
}
@media (min-width:720px){
  .footer-inner{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:1024px){
  .footer-inner{
    grid-template-columns:1.5fr 1fr 1.2fr 1.1fr;
    gap:40px;
    padding:56px 32px 40px;
  }
}

.footer-col{min-width:0}
.footer-col--brand{max-width:34em}

.footer-brand{
  font-family:var(--serif);
  font-size:24px;
  font-weight:700;
  letter-spacing:.01em;
  color:var(--paper);
  margin:0 0 12px;
}
.footer-note{
  font-size:14px;
  line-height:1.9;
  color:rgba(245,242,236,.7);
  margin:0 0 14px;
}
.footer-stat{
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.06em;
  color:rgba(245,242,236,.6);
  margin:0;
}
.footer-stat b{
  color:var(--amber);
  font-weight:400;
}

.footer-heading{
  font-family:var(--mono);
  font-size:12px;
  font-weight:400;
  letter-spacing:.16em;
  color:var(--amber);
  margin:0 0 16px;
}

.footer-links{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:8px 20px;
}
.footer-links--single{grid-template-columns:minmax(0,1fr)}
.footer-links a{
  display:inline-flex;
  align-items:baseline;
  gap:8px;
  font-size:15px;
  color:rgba(245,242,236,.82);
  text-decoration:none;
  transition:color .16s var(--ease);
}
.footer-links a:hover{color:var(--amber)}
.f-idx{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.08em;
  color:rgba(209,154,60,.7);
}

.footer-contact{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:12px;
  font-size:14px;
}
.footer-contact li{
  display:flex;
  flex-direction:column;
  gap:3px;
}
.footer-contact .k{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.12em;
  color:rgba(245,242,236,.45);
}
.footer-contact .v{
  color:rgba(245,242,236,.88);
  word-break:break-all;
}

.footer-icp{
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.06em;
  color:rgba(245,242,236,.6);
  margin:16px 0 0;
}

.footer-tape{
  border-top:1px solid rgba(245,242,236,.14);
  border-bottom:1px solid rgba(245,242,236,.14);
  padding:12px 0;
  overflow:hidden;
}
.footer-tape-inner{
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 20px;
  display:flex;
  gap:26px;
  overflow-x:auto;
  scrollbar-width:thin;
}
@media (min-width:1024px){
  .footer-tape-inner{padding:0 32px}
}
.tape-item{
  display:inline-flex;
  align-items:baseline;
  gap:8px;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.08em;
  color:rgba(245,242,236,.55);
  white-space:nowrap;
}
.tape-item b{
  color:var(--amber);
  font-weight:400;
}

.footer-base{
  max-width:var(--wrap);
  margin:0 auto;
  padding:18px 20px 34px;
  display:flex;
  flex-wrap:wrap;
  gap:8px 24px;
  align-items:center;
  justify-content:space-between;
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.04em;
  color:rgba(245,242,236,.5);
}
@media (min-width:1024px){
  .footer-base{padding:18px 32px 38px}
}

/* ============================================================
   无障碍与动效降级
   ============================================================ */

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html.js [data-reveal]{
    opacity:1;
    transform:none;
  }
  [data-vine] path{stroke-dashoffset:0}
}