/* ============================================================
   0F4C81 · xry 工作站 — 重设计 V1
   设计概念：以色号命名的个人档案馆（The Index）
   单色系纪律：纸面 + 墨色 + 唯一强调色 #0F4C81
   ============================================================ */

:root{
  --paper:#f6f1e7;
  --paper-2:#efe8d9;
  --ink:#0e1c2b;
  --ink-2:#3d4f61;
  --ink-3:#7e8b98;
  --blue:#0f4c81;
  --blue-deep:#0b3a64;
  --line:#d9d0bd;
  --line-soft:#e5ddcb;
  --serif:"Songti SC","STSong","Noto Serif CJK SC","Source Han Serif SC","SimSun",serif;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --mono:"SF Mono","Menlo","Consolas","Courier New",monospace;
  --ease:cubic-bezier(0.22,1,0.36,1);
  --shell:1180px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:#e8e0cd;
  color:var(--ink);
  font-family:var(--sans);
  font-size:15px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
::selection{background:var(--blue);color:var(--paper)}
a{color:inherit;text-decoration:none}
ul{list-style:none}

/* ── 画框：整页装进四边留白的纸面 ── */
.sheet{
  background:var(--paper);
  border:1px solid var(--line);
  margin:clamp(14px,2.6vw,40px);
  min-height:calc(100vh - clamp(14px,2.6vw,40px) * 2);
  display:flex;flex-direction:column;
}
.sheet > main{flex:1;display:flex;flex-direction:column}

/* ── 细线网格壳 ── */
.shell{width:100%;max-width:var(--shell);margin:0 auto;padding:0 clamp(26px,5vw,72px)}
@media(max-width:640px){.shell{padding:0 20px}}

/* ── 顶栏（吸顶于画框内） ── */
.masthead{
  position:sticky;top:0;z-index:100;
  background:color-mix(in srgb,var(--paper) 88%,transparent);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.masthead-in{
  max-width:var(--shell);margin:0 auto;padding:0 clamp(26px,5vw,72px);
  height:58px;display:flex;align-items:center;gap:28px;
}
@media(max-width:640px){.masthead-in{padding:0 20px;gap:16px}}

.wordmark{display:flex;align-items:baseline;gap:10px;flex:0 0 auto}
.wordmark b{
  font-family:var(--mono);font-size:15px;font-weight:700;
  letter-spacing:.06em;color:var(--blue);
}
.wordmark b sup{font-size:8px;letter-spacing:0}
.wordmark span{
  font-family:var(--mono);font-size:10px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--ink-3);
}
@media(max-width:760px){.wordmark span{display:none}}

.mastnav{display:flex;gap:22px;margin-left:auto}
.mastnav a{
  display:inline-flex;align-items:center;min-height:44px;
  position:relative;font-family:var(--mono);font-size:11px;
  letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2);
  padding:4px 0;transition:color .2s var(--ease);
}
.mastnav a small{
  font-family:var(--sans);font-size:10px;letter-spacing:.2em;
  color:var(--ink-3);margin-left:5px;transition:color .2s var(--ease);
}
.mastnav a::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;
  background:var(--blue);transition:width .28s var(--ease);
}
.mastnav a:hover{color:var(--blue)}
.mastnav a:hover small{color:var(--blue)}
.mastnav a:hover::after{width:100%}
@media(max-width:760px){.mastnav{display:none}}

.mast-status{
  display:flex;align-items:center;gap:8px;flex:0 0 auto;
  font-family:var(--mono);font-size:10px;letter-spacing:.1em;
  color:var(--ink-2);border:1px solid var(--line);
  padding:5px 10px;border-radius:999px;background:rgba(255,255,255,.4);
}
.mast-status .dot{
  width:7px;height:7px;border-radius:50%;background:var(--blue);
  animation:pulse 2.4s var(--ease) infinite;
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.25}}
@media(max-width:480px){.mast-status .clock{display:none}}

/* ── 色号标本带（内嵌卡片，不贴边） ── */
.specimen{
  border:1px solid var(--line);
  background:var(--paper-2);
  margin-top:clamp(52px,9vh,110px);
}
.specimen-in{
  display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  min-height:300px;
}
.specimen-chip{
  background:var(--blue);
  position:relative;overflow:hidden;
  display:flex;align-items:flex-end;padding:22px;
}
.specimen-chip::after{
  content:"0F4C81";
  position:absolute;right:-.06em;bottom:-.28em;
  font-family:var(--mono);font-weight:700;
  font-size:clamp(90px,11vw,150px);letter-spacing:-.04em;
  color:rgba(246,241,231,.14);pointer-events:none;
}
.specimen-chip span{
  font-family:var(--mono);font-size:10px;letter-spacing:.2em;
  text-transform:uppercase;color:rgba(246,241,231,.85);
  border:1px solid rgba(246,241,231,.4);padding:4px 9px;border-radius:999px;
}
.specimen-doc{padding:34px 36px;display:flex;flex-direction:column;justify-content:center;gap:14px}
.specimen-doc h2{
  font-family:var(--mono);font-size:11px;letter-spacing:.22em;
  text-transform:uppercase;color:var(--blue);font-weight:700;
}
.specimen-doc p{font-size:14px;line-height:1.9;color:var(--ink-2);max-width:46em}
.specimen-doc p b{color:var(--ink);font-weight:600}
.specimen-facts{
  display:flex;flex-wrap:wrap;gap:8px 26px;margin-top:4px;
  font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;color:var(--ink-3);
}
.specimen-facts b{color:var(--ink);font-weight:600}
@media(max-width:820px){
  .specimen-in{grid-template-columns:1fr}
  .specimen-chip{min-height:180px}
}

/* ── 目录 ── */
.index-sec{padding:76px 0 40px}
.index-head{display:flex;align-items:baseline;justify-content:space-between;gap:20px;margin-bottom:34px}
.index-head h1{
  font-family:var(--serif);font-size:clamp(28px,3.6vw,42px);
  font-weight:700;line-height:1.2;
}
.index-head h1 small{
  display:block;font-family:var(--mono);font-size:11px;font-weight:400;
  letter-spacing:.22em;text-transform:uppercase;color:var(--ink-3);margin-bottom:10px;
}
.index-head p{font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;color:var(--ink-3);text-transform:uppercase;white-space:nowrap}
@media(max-width:640px){.index-head p{display:none}}

.group{margin-bottom:44px}
.group-head{
  display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 16px;
  padding-bottom:10px;margin-bottom:2px;
  border-bottom:1px solid var(--ink);
}
.group-head .g-no{font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--blue);font-weight:700}
.group-head h3{font-family:var(--serif);font-size:21px;font-weight:700;white-space:nowrap}
.group-head .g-en{
  font-family:var(--mono);font-size:10px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--ink-3);white-space:nowrap;
}
.group-head .g-count{margin-left:auto;font-family:var(--mono);font-size:10px;letter-spacing:.14em;color:var(--ink-3);white-space:nowrap}
.group-head .g-desc{flex-basis:100%;font-size:12.5px;color:var(--ink-3);margin-top:2px}

.entry{
  display:grid;
  grid-template-columns:52px minmax(0,15fr) minmax(0,17fr) 108px 30px;
  align-items:center;gap:18px;
  padding:17px 14px 17px 4px;
  border-bottom:1px solid var(--line-soft);
  position:relative;
  transition:background .24s var(--ease);
}
.entry::before{
  content:"";position:absolute;inset:0;background:var(--blue);
  transform:scaleY(0);transform-origin:top;
  transition:transform .26s var(--ease);z-index:0;
}
.entry:hover::before{transform:scaleY(1)}
.entry > *{position:relative;z-index:1}
.entry .no{
  font-family:var(--mono);font-size:11px;letter-spacing:.06em;
  color:var(--blue);font-weight:700;transition:color .24s var(--ease);
}
.entry .name{display:flex;flex-direction:column;gap:1px;min-width:0}
.entry .name b{
  font-family:var(--serif);font-size:17.5px;font-weight:700;line-height:1.3;
  transition:color .24s var(--ease);
}
.entry .name small{
  font-family:var(--mono);font-size:9.5px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--ink-3);transition:color .24s var(--ease);
}
.entry .desc{
  font-size:12.5px;line-height:1.6;color:var(--ink-3);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  transition:color .24s var(--ease);
}
.entry .status{
  font-family:var(--mono);font-size:9.5px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--ink-2);
  display:flex;align-items:center;gap:7px;transition:color .24s var(--ease);
}
.entry .status i{
  width:6px;height:6px;border-radius:50%;background:var(--blue);flex:0 0 auto;
  transition:background .24s var(--ease);
}
.entry .status.st-auth i{background:transparent;border:1.5px solid var(--ink-3)}
.entry .status.st-lab i{border-radius:0}
.entry .status.st-report i{border-radius:0;transform:rotate(45deg)}
.entry .status.st-upgrading i{background:transparent;border:1.5px solid var(--blue)}
.entry .arrow{
  font-family:var(--mono);font-size:14px;color:var(--ink-3);
  transition:transform .26s var(--ease),color .24s var(--ease);
}
.entry:hover .no{color:rgba(246,241,231,.75)}
.entry:hover .name b{color:var(--paper)}
.entry:hover .name small{color:rgba(246,241,231,.6)}
.entry:hover .desc{color:rgba(246,241,231,.72)}
.entry:hover .status{color:rgba(246,241,231,.9)}
.entry:hover .status i{background:var(--paper)!important;border-color:transparent!important}
.entry:hover .arrow{color:var(--paper);transform:translateX(5px)}
.entry:focus-visible{outline:2px solid var(--blue);outline-offset:-2px}

@media(max-width:860px){
  .entry{grid-template-columns:40px minmax(0,1fr) 86px 22px;gap:12px;padding:15px 8px 15px 2px}
  .entry .desc{display:none}
}
@media(max-width:480px){
  .entry{grid-template-columns:30px minmax(0,1fr) 22px}
  .entry .status{display:none}
}

/* ── 站台信号（内嵌，不贴边） ── */
.feed{margin-top:72px}
.feed-in{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);
}
.feed-cell{
  padding:26px 22px;border-left:1px solid var(--line-soft);
}
.feed-cell:first-child{border-left:none}
.feed-cell h4{
  font-family:var(--mono);font-size:10px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--ink-3);font-weight:400;margin-bottom:8px;
}
.feed-cell b{font-family:var(--mono);font-size:16px;font-weight:700;color:var(--ink);letter-spacing:.02em}
.feed-cell p{font-size:12px;color:var(--ink-3);margin-top:4px;line-height:1.5}
@media(max-width:820px){
  .feed-in{grid-template-columns:repeat(2,1fr)}
  .feed-cell:nth-child(3){border-left:none}
  .feed-cell:nth-child(n+3){border-top:1px solid var(--line-soft)}
  .feed-cell{padding:20px 16px}
  .feed-cell b{font-size:13.5px;letter-spacing:0}
}

/* ── 巨大页脚字标 ── */
.colophon{margin-top:auto;padding-top:96px;overflow:hidden}
.colophon .mark{
  font-family:var(--mono);font-weight:700;
  font-size:clamp(76px,16.5vw,228px);
  line-height:.96;letter-spacing:-.045em;
  color:var(--blue);
  white-space:nowrap;
  padding:34px 0 10px;
  user-select:none;
}
.colophon .base{
  display:flex;flex-wrap:wrap;gap:10px 30px;justify-content:space-between;
  padding:18px 0 44px;border-top:1px solid var(--line);
  font-family:var(--mono);font-size:10px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--ink-3);
}

/* ── 入场动效 ── */
.rise{opacity:0;transform:translateY(14px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.rise.in{opacity:1;transform:none}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .rise{opacity:1;transform:none;transition:none}
  .mast-status .dot{animation:none}
  .entry,.entry::before,.entry *,.mastnav a::after{transition:none!important}
}