@charset "utf-8";
/* ============================================================================
   对话案例页 /s/<token> · 样式
   ----------------------------------------------------------------------------
   契约：quickanswer/docs/share-cases.md §5（类名）、§9（验收）
   样张：quickanswer/share-preview/fixture.html（markup 唯一参考）
   交互：assets/share/share.js（纯原生，无框架）

   设计口径
   - 暖纸底 + 藏青 + 金，读起来像一本研究刊物的案例页，不像后台管理页
   - 移动优先：360–430px 无横向滚动；正文 16px/1.75；点按目标 ≥44px
   - 只用系统字体栈（标题走 Noto Serif CJK / 思源宋体），不引外网 CDN
   - 颜色与 agent.css 的 :root 同一套语言（--navy/--gold/--paper/--ink…）
   ========================================================================== */

:root{
  /* —— 与 agent.css 同一套设计令牌 —— */
  --navy:#0b2545;
  --navy2:#123459;
  --gold:#c8a45c;
  --gold2:#e3c98e;
  --gold-ink:#8a5a24;      /* 金色的小字号文字用这一档，保证对比度 */
  --paper:#f7f5f0;
  --paper-2:#efece5;
  --surface:#fff;
  --ink:#17263b;
  --muted:#5f6b7a;
  --faint:#7a8593;
  --label:#7a6a4e;
  --line:rgba(11,37,69,.12);
  --hair:rgba(11,37,69,.08);

  /* —— 字体：纯系统栈，标题用宋 —— */
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Noto Sans CJK SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  --serif:"Noto Serif CJK SC","Noto Serif SC","Source Han Serif SC","Songti SC",STSong,"SimSun",serif;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;

  --ease:cubic-bezier(.22,.61,.36,1);
  --r:14px;
  --pad:16px;              /* 移动端左右留白 */
}

*,*::before,*::after{box-sizing:border-box;min-width:0}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
html,body{margin:0}
body.sp{
  font:16px/1.75 var(--sans);
  color:var(--ink);
  background:
    radial-gradient(760px 420px at 84% -6%,rgba(200,164,92,.10),transparent 64%),
    radial-gradient(620px 400px at 2% 104%,rgba(18,52,89,.05),transparent 72%),
    var(--paper);
  overflow-x:clip;          /* clip 不建滚动容器，不会破坏 sticky */
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body.sp::before{            /* 极淡的纸纹，替代背景图 */
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.34;
  background-image:radial-gradient(rgba(11,37,69,.06) .5px,transparent .5px);
  background-size:19px 19px;
  -webkit-mask-image:linear-gradient(180deg,transparent 0,#000 14%,#000 86%,transparent 100%);
  mask-image:linear-gradient(180deg,transparent 0,#000 14%,#000 86%,transparent 100%);
}
.sp a{color:var(--navy);text-decoration:none}
.sp a:focus-visible,
.sp button:focus-visible,
.sp summary:focus-visible,
.sp img:focus-visible{
  outline:2px solid var(--gold);
  outline-offset:3px;
}
.sp img{max-width:100%}

/* ============================ 1. 顶部进度 / 页头 ========================= */

.sp-progress{
  position:fixed;left:0;right:0;top:0;height:2px;z-index:70;
  background:transparent;pointer-events:none;
}
.sp-progress > i{
  display:block;height:100%;width:100%;
  background:linear-gradient(90deg,var(--gold),var(--gold2));
  transform:scaleX(0);transform-origin:0 50%;
  transition:transform .12s linear;
}

.sp-top{
  position:sticky;top:0;z-index:60;
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  min-height:58px;
  padding-top:6px;padding-bottom:6px;
  padding-left:max(14px,env(safe-area-inset-left),calc((100% - 1080px) / 2));
  padding-right:max(14px,env(safe-area-inset-right),calc((100% - 1080px) / 2));
  background:rgba(247,245,240,.985);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  backdrop-filter:blur(12px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.sp-top.is-stuck{border-bottom-color:var(--hair);box-shadow:0 6px 18px -16px rgba(11,37,69,.55)}

.sp-brand{display:inline-flex;align-items:center;gap:9px;color:var(--ink);min-height:44px}
.sp-logo{
  flex:0 0 26px;width:26px;height:26px;border-radius:7px;
  display:grid;place-items:center;
  background:linear-gradient(150deg,#16395e,#0b2545);
  color:var(--gold2);font-size:12px;line-height:1;
  box-shadow:inset 0 0 0 1px rgba(200,164,92,.34);
}
.sp-brand-t{font-size:14px;font-weight:700;letter-spacing:.01em;color:var(--ink);white-space:nowrap}
.sp-brand-t em{
  font-style:normal;font-size:10.5px;font-weight:700;letter-spacing:.12em;
  color:var(--gold-ink);background:rgba(200,164,92,.14);
  border-radius:999px;padding:2px 8px;margin-left:8px;vertical-align:1px;
  display:none;                       /* 窄屏先不挤，≥560px 再出现 */
}
.sp-nav{display:flex;align-items:center;gap:2px}
.sp-toplink{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:0 10px;border-radius:9px;
  font-size:13px;color:var(--muted);white-space:nowrap;
  transition:color .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease);
}
.sp-toplink:hover{color:var(--ink);background:rgba(11,37,69,.05)}
.sp-toplink-cta{
  color:var(--navy);font-weight:700;
  border:1px solid rgba(11,37,69,.18);padding:0 13px;margin-left:2px;
}
.sp-toplink-cta:hover{background:#fff;border-color:rgba(200,164,92,.7);color:var(--navy)}

/* ============================== 2. 版心 ================================== */

.sp-main{
  position:relative;z-index:1;
  max-width:760px;margin:0 auto;
  padding:26px max(var(--pad),env(safe-area-inset-right)) 0 max(var(--pad),env(safe-area-inset-left));
}

/* ============================== 3. Hero ================================== */

.sp-hero{padding:8px 0 0}
.sp-hero::before{                 /* 顶部一截金线：刊物的“眉” */
  content:"";display:block;width:38px;height:2px;margin:0 0 18px;
  background:linear-gradient(90deg,var(--gold),rgba(200,164,92,0));
}
.sp-badge{
  display:inline-flex;align-items:center;gap:8px;
  font-size:10.5px;font-weight:700;letter-spacing:.18em;
  color:var(--gold-ink);text-transform:uppercase;
}
.sp-badge-dot{
  width:6px;height:6px;border-radius:50%;background:var(--gold);
  box-shadow:0 0 0 3px rgba(200,164,92,.16);
}
.sp-title{
  font-family:var(--serif);
  font-size:clamp(27px,7.2vw,46px);
  line-height:1.24;letter-spacing:-.018em;font-weight:700;
  color:var(--navy);
  margin:14px 0 12px;max-width:24em;
  text-wrap:balance;
  overflow-wrap:anywhere;      /* 超长英文/链接也别撑破页面 */
}
/* 服务端按字数加档：>16 字 is-long、>26 字 is-xlong；标题和导语一起降一档 */
.sp-title.is-long{font-size:clamp(24px,6.3vw,40px);line-height:1.28;letter-spacing:-.02em}
.sp-title.is-xlong{font-size:clamp(21px,5.5vw,34px);line-height:1.33;letter-spacing:-.014em}
.sp-title.is-long + .sp-lede{font-size:15px}
.sp-title.is-xlong + .sp-lede{font-size:14.5px}
.sp-lede{
  margin:0;max-width:34em;
  font-size:16px;line-height:1.8;color:#485566;
}
.sp-meta{
  display:flex;flex-wrap:wrap;align-items:center;
  gap:4px 0;margin:16px 0 0;
  font-size:12.5px;color:var(--muted);
}
.sp-meta > span{display:inline-flex;align-items:baseline;gap:4px;padding:0 12px;border-left:1px solid var(--hair)}
.sp-meta > span:first-child{padding-left:0;border-left:0}
.sp-meta b{
  font-size:14px;font-weight:700;color:var(--navy);
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;
}
.sp-cover{
  margin:24px 0 0;position:relative;
}
.sp-cover img{
  display:block;width:100%;height:auto;
  aspect-ratio:1200/630;object-fit:cover;object-position:50% 46%;
  border-radius:6px;
  border:1px solid rgba(11,37,69,.10);
  background:var(--navy);
  box-shadow:0 0 0 1px rgba(200,164,92,.16),0 22px 44px -34px rgba(11,37,69,.62);
}
@media (max-width:560px){
  /* 窄屏只留「徽章 + 标题 + 摘要」那一条横幅：按 12:5 从顶部裁，
     裁切线落在金线与品牌行之间，不会把字切一半；也避免与 H1 抢首屏。 */
  .sp-cover{margin-top:20px}
  .sp-cover img{aspect-ratio:12/5;object-position:50% 0}
}

/* ============================== 4. Facts ================================= */

.sp-facts{
  display:grid;grid-template-columns:1fr 1fr;
  margin:26px 0 30px;
  border-top:1px solid var(--hair);border-bottom:1px solid var(--hair);
}
.sp-fact{padding:14px 14px 15px;display:flex;flex-direction:column;gap:4px}
.sp-fact:nth-child(even){border-left:1px solid var(--hair)}
.sp-fact:nth-child(n+3){border-top:1px solid var(--hair)}
.sp-fact-k{
  font-size:10.5px;letter-spacing:.14em;color:#8b7d68;font-weight:700;
}
.sp-fact-v{font-size:13.5px;line-height:1.55;color:var(--ink);word-break:keep-all;overflow-wrap:break-word}

/* ============================== 5. 对话线 ================================= */

.sp-thread{
  position:relative;
  display:flex;flex-direction:column;gap:20px;
  margin:0 0 8px;
}
.turn{position:relative;scroll-margin-top:78px}
.turn-head{
  display:flex;align-items:center;gap:9px;
  margin:0 0 8px;
}
.turn-role{
  font-size:11px;font-weight:700;letter-spacing:.14em;
  color:#8b7d68;white-space:nowrap;
}
.turn-idx{
  font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;
  color:#b3a68d;font-variant-numeric:tabular-nums;
}
.turn-bot .turn-role{color:var(--navy);display:inline-flex;align-items:center;gap:7px}
.turn-bot .turn-role::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:var(--gold);box-shadow:0 0 0 3px rgba(200,164,92,.16);
}
.turn-bot .turn-head{margin:0;padding:13px 0 11px;border-bottom:1px solid var(--hair);margin-bottom:15px}
.turn-bot .turn-idx{margin-left:auto}

/* 用户：靠右的窄卡，藏青底白字 */
.turn-user .turn-head{
  justify-content:flex-end;
  gap:8px;padding:0 6px 0 0;
}
.turn-user .turn-role{color:#8b7d68}
.turn-user .turn-body{
  margin-left:auto;
  max-width:min(88%,520px);
  padding:12px 16px;
  border-radius:16px 16px 5px 16px;
  background:linear-gradient(158deg,#153c66,var(--navy) 68%);
  color:#eef3f9;
  font-size:15.5px;line-height:1.75;
  box-shadow:0 12px 26px -20px rgba(11,37,69,.75);
}
.turn-user .turn-body > :first-child{margin-top:0}
.turn-user .turn-body > :last-child{margin-bottom:0}
.turn-user .turn-body p{margin:0 0 8px}
.turn-user .turn-body strong{color:#fff;font-weight:700}
.turn-user .turn-body a{color:var(--gold2);text-decoration:underline;text-underline-offset:3px}

/* AI：白纸卡，像一篇短文章 */
.turn-bot{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r);
  padding:0 16px 16px;
  box-shadow:0 1px 2px rgba(11,37,69,.04),0 26px 44px -42px rgba(11,37,69,.55);
}
.turn-body{min-width:0}

/* ============================== 6. Markdown ============================== */

.md{font-size:16px;line-height:1.75;overflow-wrap:anywhere}
.md > :first-child{margin-top:0}
.md > :last-child{margin-bottom:0}
.md p{margin:0 0 13px}
.md h1,.md h2{
  font-family:var(--serif);font-weight:700;color:var(--navy);
  font-size:19px;line-height:1.45;letter-spacing:-.01em;
  margin:24px 0 10px;
}
.md h2{position:relative;padding-left:12px}
.md h2::before{
  content:"";position:absolute;left:0;top:.32em;width:3px;height:.92em;
  border-radius:2px;background:var(--gold);
}
.md h3{
  font-family:var(--serif);font-weight:700;color:var(--navy);
  font-size:16.5px;line-height:1.5;margin:20px 0 8px;
}
.md h4{
  font-size:15px;font-weight:700;color:var(--navy);
  margin:16px 0 6px;letter-spacing:.01em;
}
.md ul,.md ol{margin:0 0 14px;padding-left:1.35em}
.md li{margin:5px 0}
.md li::marker{color:var(--gold)}
.md strong{font-weight:700;color:#12233a}
.md em{font-style:italic;color:#3f4c5d}
.md del{color:var(--faint)}
.md a{
  color:var(--gold-ink);
  text-decoration:underline;
  text-decoration-color:rgba(200,164,92,.55);
  text-decoration-thickness:1px;
  text-underline-offset:3px;
  transition:color .16s var(--ease),text-decoration-color .16s var(--ease);
}
.md a:hover{color:var(--navy);text-decoration-color:var(--gold)}
.md hr{
  border:0;height:1px;margin:22px 0;
  background:linear-gradient(90deg,rgba(11,37,69,.16),rgba(11,37,69,.04));
}
.md blockquote{
  margin:16px 0;padding:11px 14px 11px 15px;
  border-left:2px solid var(--gold);
  background:rgba(200,164,92,.07);
  border-radius:0 8px 8px 0;
  color:#43505f;font-size:15px;line-height:1.75;
}
.md blockquote > :last-child{margin-bottom:0}
.md img{
  display:block;max-width:100%;height:auto;margin:16px auto;
  border-radius:8px;border:1px solid var(--hair);
  cursor:zoom-in;background:var(--paper-2);
}
.md code{
  font-family:var(--mono);font-size:.88em;
  background:rgba(11,37,69,.06);color:#6f4a15;
  border-radius:4px;padding:1px 5px;
  overflow-wrap:anywhere;
}
.md pre{
  margin:16px 0;padding:14px 16px;
  background:linear-gradient(160deg,#132c49,#0e2038);
  color:#e7eef7;
  border-radius:10px;
  overflow-x:auto;-webkit-overflow-scrolling:touch;
  font-size:12.8px;line-height:1.65;
  box-shadow:inset 0 0 0 1px rgba(200,164,92,.18);
}
.md pre code{
  background:transparent;color:inherit;padding:0;border-radius:0;
  font-size:inherit;white-space:pre;
}
.md pre::-webkit-scrollbar{height:6px}
.md pre::-webkit-scrollbar-thumb{background:rgba(200,164,92,.45);border-radius:3px}

/* 表格：横向滚动，绝不撑破页面；刊物的“横线表”而非网格 */
.md table{
  /* display:block + overflow 让表格自己横滚；列宽按“单词”最小宽算，
     不能用 overflow-wrap:anywhere（会把 142bp 拆成 142b/p、把“中性偏贵”压成一字一行） */
  display:block;width:100%;max-width:100%;
  overflow-x:auto;-webkit-overflow-scrolling:touch;
  overflow-wrap:normal;
  border-collapse:collapse;
  margin:16px 0;font-size:13.5px;line-height:1.55;
  scrollbar-width:thin;scrollbar-color:rgba(11,37,69,.22) transparent;
}
.md table::-webkit-scrollbar{height:6px}
.md table::-webkit-scrollbar-thumb{background:rgba(11,37,69,.20);border-radius:3px}
.md table::-webkit-scrollbar-track{background:transparent}
.md thead th{
  text-align:left;vertical-align:bottom;
  overflow-wrap:normal;
  padding:8px 12px;white-space:nowrap;
  font-size:11.5px;font-weight:700;letter-spacing:.04em;color:var(--muted);
  border-bottom:1.5px solid rgba(11,37,69,.28);
  background:transparent;
}
.md tbody td{
  /* keep-all：中文短语不按单字断行，否则窄屏列会被压成“一字一行”；
     break-word 只在真的放不下时才断，长句仍能折行。 */
  word-break:keep-all;overflow-wrap:break-word;max-width:16em;
  padding:9px 12px;vertical-align:top;
  border-bottom:1px solid var(--hair);
  color:#25344a;
}
.md thead th:first-child,.md tbody td:first-child{padding-left:0}
/* 列多的表（JS 加 .is-wide）给首列一个下限，别让口径名被压成三四行 */
.md table.is-wide td:first-child{min-width:8.5em}
.md tbody tr:last-child td{border-bottom:0}
.md tbody tr:hover td{background:rgba(200,164,92,.045)}
.md .sp-note,
.sp-note{
  margin:14px 0 0;padding-left:10px;
  border-left:2px solid rgba(200,164,92,.55);
  font-size:12.5px;line-height:1.7;color:var(--faint);
}

/* 长回答折叠（JS 加 .is-long + .md-more） */
.turn-body.is-long{
  position:relative;max-height:640px;overflow:hidden;
}
.turn-body.is-long::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:54px;
  background:linear-gradient(180deg,rgba(255,255,255,0),#fff 86%);
  pointer-events:none;
}
.turn-body.is-long.is-open{max-height:none}
.turn-body.is-long.is-open::after{display:none}
.md-more{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  margin:12px 0 0;min-height:44px;padding:0 18px;
  border:1px solid rgba(11,37,69,.16);border-radius:999px;
  background:var(--surface);color:var(--navy);
  font:600 13px/1 var(--sans);letter-spacing:.02em;cursor:pointer;
  transition:border-color .18s var(--ease),background .18s var(--ease),transform .18s var(--ease);
}
.md-more::after{content:"↓";font-size:12px;color:var(--gold-ink);transition:transform .18s var(--ease)}
.md-more:hover{border-color:rgba(200,164,92,.75);background:#fffdf8}
.md-more[aria-expanded="true"]::after{transform:rotate(180deg)}

/* ============================== 7. 执行步骤 ============================== */

.turn-steps{
  margin:16px 0 0;
  border:1px solid var(--hair);border-radius:10px;
  background:#fcfbf7;
  overflow:hidden;
}
.turn-steps > summary{
  display:flex;align-items:center;gap:8px;
  list-style:none;cursor:pointer;
  min-height:44px;padding:11px 13px;
  font-size:12.5px;font-weight:600;color:var(--muted);
  transition:color .16s var(--ease),background .16s var(--ease);
}
.turn-steps > summary::-webkit-details-marker{display:none}
.turn-steps > summary::before{
  content:"";width:0;height:0;flex:0 0 auto;
  border-left:5px solid var(--gold);
  border-top:4px solid transparent;border-bottom:4px solid transparent;
  transition:transform .18s var(--ease);
}
.turn-steps[open] > summary::before{transform:rotate(90deg)}
.turn-steps > summary:hover{color:var(--navy);background:rgba(200,164,92,.05)}
.turn-steps .steps{
  display:flex;flex-direction:column;gap:2px;
  margin:0;padding:2px 13px 12px 26px;
  position:relative;
}
.turn-steps .steps::before{
  content:"";position:absolute;left:17px;top:2px;bottom:14px;width:1px;
  background:linear-gradient(180deg,rgba(11,37,69,.16),rgba(11,37,69,.04));
}
.step{
  position:relative;display:flex;flex-wrap:wrap;align-items:baseline;gap:6px;
  padding:6px 0;font-size:12.8px;line-height:1.6;color:var(--muted);
}
.step .dot{
  position:absolute;left:-13.5px;top:12px;
  width:7px;height:7px;border-radius:50%;
  background:var(--surface);box-shadow:inset 0 0 0 1.5px var(--gold);
}
.step b{font-weight:650;color:var(--ink);font-size:12.8px}
.step code{
  font-family:var(--mono);font-size:11.6px;line-height:1.5;
  color:#7b6a4f;background:#f2eee4;border-radius:4px;padding:1px 6px;
  overflow-wrap:anywhere;
}
.step.is-fail .dot{background:#b4402c;box-shadow:none}

/* ============================== 8. 附件（上锁） ========================== */

.sp-attach-box{margin:14px 0 0;display:grid;gap:9px}
.attach{
  display:flex;align-items:center;gap:12px;
  min-height:68px;padding:12px 14px;
  border:1px solid rgba(11,37,69,.14);border-radius:12px;
  background:linear-gradient(180deg,#fff,#fdfcf9);
  color:var(--ink);text-decoration:none;
  box-shadow:0 1px 2px rgba(11,37,69,.04);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease),transform .18s var(--ease),background .18s var(--ease);
}
.attach:hover{
  border-color:rgba(200,164,92,.8);
  background:#fffdf8;
  transform:translateY(-1px);
  box-shadow:0 14px 26px -20px rgba(11,37,69,.6);
}
.attach:active{transform:translateY(0)}
.attach-ico{
  flex:0 0 42px;width:42px;height:42px;border-radius:10px;
  display:grid;place-items:center;
  background:linear-gradient(150deg,#16395e,var(--navy));
  color:var(--gold2);font-size:16px;line-height:1;
  box-shadow:inset 0 0 0 1px rgba(200,164,92,.30);
}
.attach-info{display:flex;flex-direction:column;gap:3px;min-width:0;flex:1 1 auto}
.attach-title{
  font-size:14.5px;font-weight:650;color:var(--ink);line-height:1.45;
  overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
}
.attach-meta{font-size:11.5px;line-height:1.5;color:var(--faint);letter-spacing:.01em}
.attach-act{flex:0 0 auto;display:flex;align-items:center}
.attach-lock{
  position:relative;display:inline-flex;align-items:center;
  min-height:32px;padding:0 12px 0 27px;
  border-radius:999px;
  border:1px solid rgba(200,164,92,.55);
  background:rgba(200,164,92,.12);
  color:var(--gold-ink);
  font-size:11.5px;font-weight:700;letter-spacing:.02em;white-space:nowrap;
}
/* 纯 CSS 画的小锁：锁体 + 锁梁（不依赖 emoji / 外部图片） */
.attach-lock::before{
  content:"";position:absolute;left:9px;top:13px;
  width:12px;height:9px;border-radius:2px;background:currentColor;
}
.attach-lock::after{
  content:"";position:absolute;left:11.5px;top:8px;
  width:7px;height:7px;border:1.6px solid currentColor;border-bottom:0;
  border-radius:4px 4px 0 0;
}
.attach:hover .attach-lock{border-color:var(--gold);background:rgba(200,164,92,.22)}
.sp-attach-tip{
  margin:10px 2px 0;
  font-size:12px;line-height:1.65;color:var(--faint);
  display:flex;gap:7px;align-items:flex-start;
}
.sp-attach-tip::before{content:"※";color:var(--gold);flex:0 0 auto;font-size:11px;line-height:1.9}

/* ============================== 9. 嵌入图 ================================ */

.embed{
  margin:16px 0;padding:0;line-height:0;      /* 干掉 iframe 下的白边 */
  border:1px solid var(--hair);border-radius:12px;
  background:var(--surface);overflow:hidden;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.6);
}
.embed-frame{
  display:block;width:100%;height:220px;min-height:140px;
  border:0;background:transparent;color-scheme:light;
}

/* ============================== 10. CTA ================================== */

.sp-cta{
  position:relative;overflow:hidden;
  margin:40px 0 6px;padding:28px 22px 30px;
  border-radius:16px;
  background:
    radial-gradient(420px 220px at 90% -30%,rgba(200,164,92,.24),transparent 70%),
    linear-gradient(162deg,#153c66,var(--navy) 62%);
  color:#eaf0f8;
  box-shadow:0 24px 50px -40px rgba(11,37,69,.9);
}
.sp-cta::before{
  content:"";position:absolute;inset:0;border-radius:16px;
  box-shadow:inset 0 0 0 1px rgba(200,164,92,.30);
  pointer-events:none;
}
.sp-cta::after{
  content:"CASE";position:absolute;right:14px;bottom:-10px;
  font-family:var(--serif);font-size:64px;font-weight:700;letter-spacing:.06em;
  color:rgba(255,255,255,.032);pointer-events:none;line-height:1;
}
.sp-cta-h{
  font-family:var(--serif);font-weight:700;color:#fff;
  font-size:21px;line-height:1.4;letter-spacing:-.01em;
  margin:0 0 9px;
}
.sp-cta-p{
  margin:0 0 20px;max-width:32em;
  font-size:14px;line-height:1.8;color:#c3d1e2;
}
.sp-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:48px;padding:0 20px;
  border-radius:10px;
  background:linear-gradient(180deg,#dab97c,var(--gold));
  color:#1a2330;font-size:15px;font-weight:700;letter-spacing:.01em;
  text-decoration:none;
  box-shadow:0 12px 24px -16px rgba(200,164,92,.95),inset 0 1px 0 rgba(255,255,255,.35);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),filter .18s var(--ease);
}
.sp-btn::after{content:"→";font-weight:600;color:#3a2c14}
.sp-btn:hover{transform:translateY(-1px);filter:saturate(1.06);box-shadow:0 16px 28px -14px rgba(200,164,92,1),inset 0 1px 0 rgba(255,255,255,.4)}
.sp-btn:active{transform:translateY(0)}

/* ============================== 11. 页脚 ================================= */

.sp-foot{
  position:relative;z-index:1;
  max-width:760px;margin:30px auto 0;
  padding:20px max(var(--pad),env(safe-area-inset-right)) calc(34px + env(safe-area-inset-bottom)) max(var(--pad),env(safe-area-inset-left));
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 16px;
  border-top:1px solid var(--hair);
  font-size:12.5px;color:var(--faint);
}
.sp-foot-links{display:flex;flex-wrap:wrap;align-items:center;gap:2px 14px}
.sp-foot-links a,.sp-foot-links button{
  display:inline-flex;align-items:center;min-height:44px;
  font:inherit;font-size:12.5px;color:var(--muted);
  background:none;border:0;padding:0;cursor:pointer;
  transition:color .16s var(--ease);
}
.sp-foot-links a:hover,.sp-foot-links button:hover{color:var(--navy)}

/* ============================== 12. 灯箱 / 提示 ========================== */

.sp-lightbox{
  position:fixed;inset:0;z-index:120;
  display:grid;place-items:center;
  padding:16px max(16px,env(safe-area-inset-right)) 16px max(16px,env(safe-area-inset-left));
  background:rgba(6,14,25,.93);
  -webkit-backdrop-filter:blur(4px);
  backdrop-filter:blur(4px);
  cursor:zoom-out;
}
.sp-lightbox img{
  max-width:100%;max-height:92vh;width:auto;height:auto;
  border-radius:6px;background:#0b2545;
  box-shadow:0 30px 60px -30px rgba(0,0,0,.85),0 0 0 1px rgba(200,164,92,.25);
  cursor:default;
}
.sp-lightbox-close{
  position:absolute;top:max(10px,env(safe-area-inset-top));right:12px;
  width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.08);color:#fff;
  font-size:20px;line-height:1;cursor:pointer;
  transition:background .16s var(--ease),border-color .16s var(--ease);
}
.sp-lightbox-close:hover{background:rgba(255,255,255,.16);border-color:rgba(200,164,92,.7)}
body.sp-lb-lock{position:fixed;left:0;right:0;width:100%;overflow:hidden}

.sp-toast{
  position:fixed;left:50%;bottom:max(24px,calc(env(safe-area-inset-bottom) + 18px));
  transform:translate(-50%,10px);
  z-index:130;
  padding:10px 16px;border-radius:999px;
  background:rgba(11,37,69,.94);color:#fff;
  font-size:13px;line-height:1.4;white-space:nowrap;
  box-shadow:0 14px 30px -18px rgba(0,0,0,.8);
  opacity:0;pointer-events:none;
  transition:opacity .22s var(--ease),transform .22s var(--ease);
}
.sp-toast.is-on{opacity:1;transform:translate(-50%,0)}

/* ====================== 13. 案例库 /cases（列表页） ====================
   markup：quickanswer/share-preview/cases-fixture.html
   <div class="case-grid"> <a class="case-card"> .case-thumb > img + .case-body
     > .case-title / .case-sum / .case-meta </a> … </div>
   形态：横向卡（左方图 + 右文字），卡片之间靠 1px 暖灰边 + 留白分隔，不加重投影。
   ========================================================================== */
.sp-cases .sp-main,
.sp-cases .sp-foot{max-width:1120px}
.sp-hero-list{padding-bottom:0}
.sp-hero-list .sp-title{
  font-size:clamp(25px,4.8vw,38px);line-height:1.3;max-width:22em;margin-bottom:10px;
}
.sp-hero-list .sp-lede{max-width:38em}
.sp-list{margin:26px 0 12px}

.case-grid{
  display:grid;grid-template-columns:1fr;gap:16px;
}
@media (min-width:768px){.case-grid{grid-template-columns:repeat(2,1fr);gap:18px}}
@media (min-width:1100px){.case-grid{grid-template-columns:repeat(3,1fr);gap:20px}}

.case-card{
  position:relative;display:flex;align-items:stretch;gap:13px;
  padding:12px;
  border:1px solid rgba(11,37,69,.10);border-radius:14px;
  background:linear-gradient(180deg,#fff,#fdfcf9);
  color:inherit;text-decoration:none;
  transition:border-color .18s var(--ease),background .18s var(--ease),
             transform .18s var(--ease),box-shadow .18s var(--ease);
}
.case-card:hover{
  border-color:rgba(200,164,92,.72);
  background:#fffdf8;
  transform:translateY(-1px);
  box-shadow:0 12px 24px -22px rgba(11,37,69,.55);
}
.case-card:active{transform:translateY(0)}
.case-card:focus-visible{outline:2px solid var(--gold);outline-offset:3px}

.case-thumb{
  flex:0 0 96px;width:96px;height:96px;align-self:flex-start;
  border-radius:12px;overflow:hidden;background:var(--navy);
  box-shadow:inset 0 0 0 1px rgba(200,164,92,.26);
}
.case-thumb img{
  display:block;width:100%;height:100%;
  object-fit:cover;aspect-ratio:1/1;
}
.case-body{
  display:flex;flex-direction:column;gap:5px;
  min-width:0;flex:1 1 auto;padding:1px 0;
  /* 拉伸到卡片高度，让同一行卡片的 meta 都贴底对齐 */
}
.case-title{
  font-family:var(--serif);font-weight:700;color:var(--navy);
  font-size:16.5px;line-height:1.42;letter-spacing:-.01em;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  overflow-wrap:break-word;
}
.case-sum{
  font-size:13px;line-height:1.62;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  overflow-wrap:break-word;
}
.case-meta{
  margin-top:auto;padding-top:2px;
  font-size:11.5px;line-height:1.5;letter-spacing:.02em;
  color:var(--gold-ink);font-variant-numeric:tabular-nums;
}
/* 可选：带标签时（服务端若输出） */
.case-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:2px}
.case-tag{
  font-size:11px;line-height:1.6;padding:1px 8px;border-radius:999px;
  color:var(--gold-ink);background:rgba(200,164,92,.13);border:1px solid rgba(200,164,92,.28);
  white-space:nowrap;
}

.case-empty{
  /* 空态只留白：一句 + 一个按钮，不加边框和底色 */
  padding:52px 20px 58px;text-align:center;color:var(--muted);
}
.case-empty p{margin:0 0 18px;font-size:14.5px;line-height:1.7}
.case-empty .sp-btn{vertical-align:middle}

@media (max-width:430px){
  .case-thumb{flex-basis:76px;width:76px;height:76px}
  .case-card{gap:11px;padding:10px}
  .case-title{font-size:16px}
  .case-grid{gap:12px}
  .case-empty{padding:40px 14px 46px}
}

/* ============================== 14. 响应式 =============================== */

@media (min-width:430px){
  :root{--pad:20px}
  .turn-bot{padding:0 18px 18px}
  .sp-fact{padding:15px 16px 16px}
}

@media (min-width:380px){
  /* 实测 390 下 brand 180 + nav 143 + 留白 28 = 351，仍余 39px；
     <380 隐藏，360/320 都不会把标签挤到 logo 行或撑出横滚 */
  .sp-brand-t em{display:inline-block}
}

@media (min-width:560px){
  .sp-toplink{padding:0 13px;font-size:13.5px}
}

@media (min-width:900px){
  .sp-main{padding-top:38px}
  .sp-hero{padding-top:14px}
  .sp-title{margin-top:16px}
  .sp-lede{font-size:16.5px}
  .sp-cover{margin-top:30px}
  .sp-thread{gap:24px;padding-left:34px}
  .sp-thread::before{
    content:"";position:absolute;left:11px;top:16px;bottom:18px;width:1px;
    background:linear-gradient(180deg,transparent,rgba(11,37,69,.15) 6%,rgba(11,37,69,.15) 94%,transparent);
  }
  .turn::before{
    content:"";position:absolute;left:-27px;top:19px;
    width:9px;height:9px;border-radius:50%;
    background:var(--paper);
    box-shadow:inset 0 0 0 1.5px rgba(11,37,69,.28);
  }
  .turn-bot::before{
    background:var(--gold);
    box-shadow:0 0 0 4px var(--paper),inset 0 0 0 1px rgba(255,255,255,.5);
  }
  .turn-user::before{top:2px}
  .turn-bot .turn-head{padding-top:15px}
  .sp-cta{padding:34px 32px 36px;margin-top:46px}
  .sp-cta-h{font-size:24px}
  .sp-cta-p{font-size:14.5px}
}

@media (min-width:1100px){
  .sp-main{padding-top:46px}
  .sp-facts{grid-template-columns:repeat(4,1fr)}
  .sp-fact{border-top:0;padding:15px 12px 16px}
  .sp-fact:nth-child(even){border-left:1px solid var(--hair)}
  .sp-fact:not(:first-child){border-left:1px solid var(--hair)}
  .sp-fact:nth-child(n+3){border-top:0}
  /* 四列时每格只有 ~165px：字号收一档，短句仍能单行，不会把“底稿页”拆开 */
  .sp-fact-v{font-size:12.5px;line-height:1.6}
}

@media (max-width:430px){
  /* 两列时“1 个 skill 包 · 1 张底稿页”会折出难看的断行，窄屏改单列规格表 */
  .sp-facts{grid-template-columns:1fr}
  .sp-fact{
    display:grid;grid-template-columns:5.6em 1fr;align-items:baseline;
    gap:3px 12px;padding:11px 2px 12px;
    border-left:0!important;border-top:1px solid var(--hair);
  }
  .sp-fact:first-child{border-top:0}
  .sp-fact + .sp-fact{border-top:1px solid var(--hair)}
  .sp-fact-k{padding-top:2px}
  .sp-fact-v{word-break:keep-all;overflow-wrap:break-word}
}

@media (max-width:480px){
  .attach{
    display:grid;grid-template-columns:42px 1fr;
    grid-template-areas:"ico info" "act act";
    align-items:center;gap:8px 12px;
  }
  .attach-ico{grid-area:ico}
  .attach-info{grid-area:info}
  .attach-act{grid-area:act;margin-top:2px}
  .attach-lock{min-height:30px}
  .sp-meta > span{padding:0 10px}
}

/* 极窄（360px 以下仍要守住） */
@media (max-width:359px){
  .sp-brand-t{font-size:13px}
  .sp-toplink-cta{padding:0 10px}
}

/* ============================== 15. 动效 ================================= */

@media (prefers-reduced-motion:no-preference){
  .sp-hero > *{animation:sp-rise .62s var(--ease) both}
  .sp-hero > *:nth-child(2){animation-delay:.04s}
  .sp-hero > *:nth-child(3){animation-delay:.08s}
  .sp-hero > *:nth-child(4){animation-delay:.12s}
  .sp-hero > *:nth-child(5){animation-delay:.16s}
}
@keyframes sp-rise{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation:none!important;
    transition:none!important;
    scroll-behavior:auto!important;
  }
}

/* ============================== 16. 打印（A4） =========================== */

@media print{
  @page{size:A4;margin:14mm}
  body.sp{
    background:#fff!important;color:#000;
    font-size:10.5pt;line-height:1.65;
  }
  body.sp::before{display:none!important}
  .sp-progress,.sp-top,.sp-nav,.sp-cta,.sp-foot,
  .sp-lightbox,.sp-toast,.md-more,.sp-cover{display:none!important}
  .sp-main,.sp-foot{max-width:none;padding:0;margin:0}
  .sp-hero{padding-top:0}
  .sp-hero::before{background:var(--gold)!important;-webkit-print-color-adjust:exact;print-color-adjust:exact}
  .sp-badge{color:#6b4a1c}
  .sp-title{font-size:20pt;line-height:1.3;margin:8pt 0 6pt;color:#000}
  .sp-lede{font-size:10.5pt;color:#333}
  .sp-meta{font-size:8.5pt;color:#444;margin-top:8pt}
  .sp-facts{border-color:#ccc;margin:12pt 0 16pt}
  .sp-fact{padding:6pt 8pt;border-color:#ddd!important}
  .sp-fact-k{font-size:8pt;color:#555}
  .sp-fact-v{font-size:9.5pt;color:#111}
  .sp-thread{padding-left:0!important;gap:12pt}
  .sp-thread::before,.turn::before{display:none!important}
  .turn{break-inside:avoid-page}
  .turn-bot{border:1px solid #ccc;box-shadow:none;border-radius:6pt;padding:0 10pt 10pt}
  .turn-bot .turn-head{border-bottom-color:#ddd}
  .turn-user .turn-body{
    background:#f1f3f6!important;color:#000!important;
    border:1px solid #d8dde5;
    box-shadow:none;border-radius:6pt;
    -webkit-print-color-adjust:exact;print-color-adjust:exact;
  }
  .turn-user .turn-body strong,.turn-user .turn-body a{color:#000!important}
  .md{font-size:10.5pt;line-height:1.62;overflow-wrap:break-word}
  .md h2,.md h3{color:#000;font-size:12.5pt;margin:10pt 0 4pt}
  .md h2::before{display:none}
  .md a{color:#000;text-decoration:underline}
  .md pre{
    background:#f4f4f4!important;color:#000!important;
    border:1px solid #ddd;box-shadow:none;white-space:pre-wrap;
  }
  .md table{font-size:9pt;overflow:visible;display:table;width:100%}
  .md thead th{border-bottom:1pt solid #999;color:#333}
  .md tbody td{border-bottom:.5pt solid #ddd}
  .turn-body.is-long{max-height:none!important;overflow:visible!important}
  .turn-body.is-long::after{display:none!important}
  .turn-steps,.attach{break-inside:avoid;box-shadow:none}
  .attach{background:#fff;border:1px solid #ccc}
  .attach-lock{color:#6b4a1c;border-color:#c9a869;background:#fbf7ee}
  .embed{border:1px dashed #bbb}
  .embed iframe{display:none}
  .embed::after{
    content:"嵌入图表请在网页中查看";display:block;
    padding:8pt;font-size:8.5pt;color:#666;line-height:1.5;
  }
  .sp-note,.sp-attach-tip{color:#555;font-size:8.5pt}
}

/* 案例库条目少时页脚不要悬在半空（2026-10-28 实拍：只有一张卡时页脚下面一大片空白） */
.sp-cases{min-height:100vh;display:flex;flex-direction:column}
.sp-cases .sp-main{flex:1 0 auto}
.sp-cases .sp-foot{margin-top:auto}