*{box-sizing:border-box;margin:0;padding:0}
html{overflow-x:clip}
body{font-family:"Noto Sans SC","PingFang SC",system-ui,sans-serif;background:var(--bg-canvas);color:var(--fg-primary);-webkit-font-smoothing:antialiased;overflow-x:clip}
a{color:inherit;text-decoration:none}

/* ============ 顶栏 · sticky 固化 ============ */
.site-top{
  position:sticky;top:0;z-index:100;background:color-mix(in srgb,var(--bg-canvas) 96%,transparent);
  backdrop-filter:blur(18px) saturate(1.4);-webkit-backdrop-filter:blur(18px) saturate(1.4);
  border-bottom:1px solid var(--border-subtle);
  transition:box-shadow .2s,border-color .2s
}
.site-top.scrolled{
  box-shadow:0 2px 12px rgba(11,16,32,.06);
  border-bottom-color:var(--border-strong)
}
.site-top-inner{
  max-width:1280px;margin:0 auto;padding:14px 32px;display:flex;align-items:center;gap:20px
}
.brand{display:flex;align-items:center;gap:16px;cursor:pointer;user-select:none;flex-wrap:nowrap;flex-shrink:0}
.brand-logo{width:52px;height:52px;object-fit:contain;flex-shrink:0;
  transition:transform .3s cubic-bezier(.2,.8,.2,1)}
.brand:hover .brand-logo{transform:rotate(12deg) scale(1.06)}

/* 顶栏腰封：棋子 + W号 + 日期 · 描边胶囊（比实心色块低调，精致） */
.issue-bar{
  display:inline-flex;align-items:center;gap:10px;height:26px;padding:0 12px;
  border:1px solid var(--fg-primary);border-radius:999px;
  font-family:"JetBrains Mono",monospace;font-size:10px;font-weight:600;
  letter-spacing:.14em;white-space:nowrap;color:var(--fg-primary);
  background:var(--bg-canvas);transition:all .2s
}
.brand:hover .issue-bar{border-color:var(--brand);color:var(--brand)}
.brand:hover .issue-bar .issue-stone{background:var(--brand)}
.issue-bar .issue-stone{
  display:inline-block;width:7px;height:7px;border-radius:50%;
  background:var(--fg-primary);flex-shrink:0;transition:background .2s
}
.issue-bar .issue-no{
  font-family:"Fraunces",serif;font-size:13px;font-weight:600;letter-spacing:.02em
}
.issue-bar .issue-sep{
  width:1px;height:10px;background:var(--border-strong);margin:0 2px
}
.issue-bar .issue-date{color:var(--fg-secondary);font-weight:500}
.brand .brand-name{
  font-family:"Noto Serif SC",serif;font-size:18px;font-weight:700;
  letter-spacing:.02em;display:flex;align-items:center;gap:7px
}

/* ============ fab · 老板名字专属字体（全站统一视觉识别） ============ */
/* 用 Fraunces Italic 小写无大写首字母，微负字距，带下划线呼应 */
.fab-name{
  font-family:"Fraunces",serif;
  font-style:italic;
  font-weight:600;
  letter-spacing:-.015em;
  font-feature-settings:"ss01","dlig";
  text-transform:lowercase;
  display:inline-block;
  line-height:1;
  /* 腾讯蓝下划线呼应品牌 · 仅在浅色容器里才显示 */
  background:linear-gradient(transparent 62%, color-mix(in srgb, var(--brand) 28%, transparent) 62%, color-mix(in srgb, var(--brand) 28%, transparent) 90%, transparent 90%);
  padding:0 2px;
}
/* 深色按钮上下划线改为白色半透 */
.top-cta .fab-name,
.btn-primary-lg .fab-name{
  background:linear-gradient(transparent 62%, rgba(255,255,255,.35) 62%, rgba(255,255,255,.35) 90%, transparent 90%);
  color:#fff
}

/* 扁平棋子（纯几何 · 无渐变 · 无阴影） */
.stone{
  display:inline-block;position:relative;
  width:10px;height:10px;border-radius:50%;
  background:var(--fg-primary);
  cursor:pointer;flex-shrink:0;
  transition:transform .18s cubic-bezier(.2,.8,.2,1),background .18s;
  vertical-align:middle
}
.brand:hover .stone{transform:scale(1.15)}
/* 落子：瞬间缩小再回弹（扁平版不用投影） */
.stone.drop{animation:stoneDrop .28s cubic-bezier(.3,.9,.3,1.2)}
@keyframes stoneDrop{
  0%{transform:scale(1)}
  40%{transform:scale(.82)}
  100%{transform:scale(1)}
}
/* 扁平涟漪：一圈细线环从棋子处外扩 */
.stone-ripple{
  position:absolute;left:50%;top:50%;width:10px;height:10px;
  border-radius:50%;border:1px solid var(--brand);
  transform:translate(-50%,-50%) scale(1);opacity:.9;pointer-events:none;
  animation:rippleOut .55s ease-out forwards
}
@keyframes rippleOut{
  to{transform:translate(-50%,-50%) scale(4);opacity:0}
}
/* 前几次点击：棋子短暂染蓝 */
.stone.hot{background:var(--brand)}

/* 第 6 次觉醒：棋子变腾讯蓝，周围画出棋盘格线 */
.stone.awoken{background:var(--brand)}
.stone-board{
  position:absolute;left:50%;top:50%;width:36px;height:36px;
  transform:translate(-50%,-50%);pointer-events:none;opacity:0;
  animation:boardIn .5s cubic-bezier(.2,.8,.2,1) forwards
}
.stone-board line{stroke:var(--brand);stroke-width:1;stroke-dasharray:20;stroke-dashoffset:20;animation:boardDraw .4s .1s ease-out forwards}
@keyframes boardIn{to{opacity:1}}
@keyframes boardDraw{to{stroke-dashoffset:0}}

.egg-counter{
  position:absolute;top:-24px;left:50%;transform:translateX(-50%);
  font-family:"JetBrains Mono",monospace;font-size:10px;color:var(--brand);
  background:var(--bg-canvas);padding:2px 8px;border-radius:3px;
  border:1px solid var(--brand);opacity:0;pointer-events:none;
  transition:opacity .18s;white-space:nowrap;z-index:5;letter-spacing:.08em
}
.egg-counter.on{opacity:1}
.brand .brand-sub{font-size:11px;color:var(--fg-tertiary);font-family:"JetBrains Mono",monospace;letter-spacing:.1em;padding-left:10px;border-left:1px solid var(--border-subtle);margin-left:6px}
.site-nav{display:flex;gap:24px;margin-left:auto;align-items:center;white-space:nowrap}
.site-nav a{font-size:13px;color:var(--fg-secondary);transition:color .15s;position:relative;white-space:nowrap}
.site-nav a:hover{color:var(--brand)}
.site-nav a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:1.5px;background:var(--brand);transition:width .2s}
.site-nav a:hover::after{width:100%}

/* ============ 左侧浮动目录 · 极简 scroll indicator 风格 ============ */
/* 默认只是一列小圆点 · hover/active 才展开文字标签，不占空间、不挡内容 */
.side-toc{
  position:fixed;left:28px;top:50%;transform:translateY(-50%);z-index:40;
  display:flex;flex-direction:column;gap:4px;
  opacity:0;pointer-events:none;transition:opacity .35s ease
}
.side-toc.visible{opacity:1;pointer-events:auto}

.stoc-item{
  position:relative;display:flex;align-items:center;
  padding:8px 0;cursor:pointer;
  isolation:isolate
}
.stoc-dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--fg-tertiary);opacity:.45;
  transition:all .25s cubic-bezier(.2,.8,.2,1);
  flex-shrink:0
}
.stoc-item:hover .stoc-dot{opacity:1;background:var(--brand);transform:scale(1.3)}
.stoc-item.active .stoc-dot{
  width:22px;border-radius:3px;
  background:var(--brand);opacity:1
}

/* 文字标签 · 默认隐藏，hover 或 active 时从左侧滑入 */
.stoc-label{
  position:absolute;left:20px;top:50%;transform:translateY(-50%) translateX(-6px);
  white-space:nowrap;
  font-family:"Noto Serif SC",serif;font-size:13px;font-weight:500;
  color:var(--fg-primary);
  background:var(--bg-canvas);
  padding:5px 12px;border-radius:6px;
  border:1px solid var(--border-subtle);
  box-shadow:0 2px 10px rgba(11,16,32,.08);
  opacity:0;pointer-events:none;
  transition:all .25s cubic-bezier(.2,.8,.2,1)
}
.stoc-num{
  font-family:"JetBrains Mono",monospace;font-size:10px;font-weight:600;
  color:var(--fg-tertiary);letter-spacing:.05em;margin-right:8px
}
.stoc-item:hover .stoc-label{
  opacity:1;transform:translateY(-50%) translateX(8px);pointer-events:auto
}
.stoc-item.active .stoc-label{
  opacity:1;transform:translateY(-50%) translateX(8px);
  color:var(--brand);border-color:color-mix(in srgb,var(--brand) 28%,transparent);
  background:color-mix(in srgb,var(--brand) 5%,var(--bg-canvas))
}
.stoc-item.active .stoc-num{color:var(--brand)}

/* 小屏隐藏（<1280px 即 13 寸笔记本及以下） */
@media (max-width:1279px){
  .side-toc{display:none}
}
.top-cta{
  display:inline-flex;align-items:center;gap:6px;padding:8px 16px;
  background:var(--fg-primary);color:var(--bg-canvas);border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.03em;cursor:pointer;
  border:0;transition:transform .15s,box-shadow .15s;
  flex-shrink:0;white-space:nowrap
}
.top-cta:hover{transform:translateY(-1px);box-shadow:0 4px 12px rgba(0,0,0,.15)}
.theme-toggle{
  width:32px;height:32px;border-radius:50%;border:1px solid var(--border-strong);
  background:var(--bg-canvas);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;
  color:var(--fg-secondary);transition:all .18s;flex-shrink:0
}
/* 登录身份 chip */
.whoami{
  display:inline-flex;align-items:center;gap:8px;padding:5px 6px 5px 5px;
  border:1px solid var(--border-subtle);border-radius:999px;
  font-size:11px;color:var(--fg-secondary);cursor:pointer;
  transition:all .18s;background:var(--bg-canvas);flex-shrink:0
}
.whoami:hover{border-color:var(--data-neg);color:var(--data-neg)}
.whoami:hover .wa-avatar{background:var(--data-neg)}
.whoami .wa-avatar{
  width:22px;height:22px;border-radius:50%;background:var(--brand);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-family:"Noto Serif SC",serif;font-size:11px;font-weight:600;transition:background .18s
}
.whoami .wa-name{
  max-width:140px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;letter-spacing:.04em
}
.whoami .wa-logout{
  font-family:"JetBrains Mono",monospace;font-size:9px;letter-spacing:.14em;font-weight:700;
  padding-right:8px;opacity:.6
}
.whoami:hover .wa-logout{opacity:1}
.theme-toggle:hover{color:var(--brand);border-color:var(--brand)}

/* ============ Hero ============ */
.hero{
  max-width:1280px;margin:0 auto;padding:80px 40px 60px;position:relative
}
.hero-grid{display:grid;grid-template-columns:1.3fr .9fr;gap:60px;align-items:center}
.hero-eyebrow{
  font-family:"JetBrains Mono",monospace;font-size:11px;color:var(--fg-tertiary);
  letter-spacing:.24em;text-transform:uppercase;font-weight:600;margin-bottom:28px;
  display:inline-flex;align-items:center;gap:14px
}
.hero-eyebrow::before,.hero-eyebrow::after{content:"";width:20px;height:1px;background:var(--fg-primary);opacity:.35}
/* 序号戳：棋子 + 衬线大字 + WEEK */
.hero-eyebrow .week-stamp{
  display:inline-flex;align-items:baseline;gap:8px;color:var(--fg-primary);
  padding:0 2px
}
.hero-eyebrow .week-stamp .s-stone{
  align-self:center;width:8px;height:8px;border-radius:50%;background:var(--fg-primary)
}
.hero-eyebrow .week-stamp .s-num{
  font-family:"Fraunces",serif;font-size:22px;font-weight:500;letter-spacing:-.01em;line-height:1;color:var(--brand)
}
.hero-eyebrow .week-stamp .s-unit{
  font-family:"JetBrains Mono",monospace;font-size:10px;font-weight:700;letter-spacing:.2em
}
.hero-eyebrow .dek{
  font-family:"JetBrains Mono",monospace;font-size:10px;color:var(--fg-tertiary);
  font-weight:600;letter-spacing:.22em;text-transform:uppercase
}
.hero h1{
  font-family:"Noto Serif SC",serif;font-size:72px;font-weight:600;
  line-height:1.15;letter-spacing:-.02em;margin-bottom:28px
}
.hero h1 .highlight{
  background:linear-gradient(180deg,transparent 66%,color-mix(in srgb,var(--brand) 28%,transparent) 66%);
  padding:0 4px
}
.hero h1 .stroke{
  -webkit-text-stroke:1.5px var(--fg-primary);color:transparent;
  font-style:italic;font-family:"Fraunces",serif;font-weight:400
}
.hero-lead{
  font-size:17px;line-height:1.8;color:var(--fg-secondary);
  max-width:520px;margin-bottom:32px
}
.hero-lead strong{color:var(--fg-primary);font-weight:600}
.hero-motto{
  font-family:"Noto Serif SC",serif;font-size:20px;font-style:italic;
  color:var(--fg-primary);margin-bottom:32px;padding-left:16px;
  border-left:3px solid var(--brand);line-height:1.8;font-weight:500
}
.hero-actions{display:flex;gap:14px;align-items:center}
.btn-primary-lg{
  display:inline-flex;align-items:center;gap:10px;padding:14px 26px;
  background:var(--fg-primary);color:var(--bg-canvas);border-radius:999px;
  font-size:14px;font-weight:600;cursor:pointer;border:0;transition:all .18s
}
.btn-primary-lg:hover{background:var(--brand);transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,82,217,.25)}
.btn-ghost-lg{
  display:inline-flex;align-items:center;gap:8px;padding:14px 24px;
  background:transparent;color:var(--fg-primary);border:1px solid var(--border-strong);
  border-radius:999px;font-size:14px;font-weight:600;cursor:pointer;transition:all .18s
}
.btn-ghost-lg:hover{border-color:var(--brand);color:var(--brand)}

/* ==========================================================
   Hero 右侧主视觉：五子棋对弈 · 400×400 · 13×13
   ========================================================== */
.hero-compass{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;
  min-height:480px;gap:14px
}
.compass-wrap{
  position:relative;width:400px;height:400px;
  cursor:crosshair;user-select:none
}
.compass-wrap svg{width:100%;height:100%;display:block;overflow:visible}

/* 顶部比分栏 */
.game-bar{
  display:flex;align-items:center;gap:18px;
  padding:8px 16px;background:var(--bg-surface);
  border:1px solid var(--border-subtle);border-radius:999px;
  font-family:"JetBrains Mono",monospace;font-size:11px;
  color:var(--fg-secondary);letter-spacing:.06em;
  min-width:320px;justify-content:center
}
.game-bar .score{display:inline-flex;align-items:center;gap:6px}
.game-bar .dot-bk{width:7px;height:7px;border-radius:50%;background:var(--fg-primary)}
.game-bar .dot-bl{width:7px;height:7px;border-radius:50%;background:var(--brand)}
.game-bar .score-n{font-family:"Fraunces",serif;font-size:14px;color:var(--fg-primary);font-weight:500}
.game-bar .sep{width:1px;height:10px;background:var(--border-strong)}
.game-bar .turn{color:var(--fg-tertiary);font-size:10px}
.game-bar .turn strong{color:var(--fg-primary);font-weight:600}
.game-bar .turn.ai strong{color:var(--brand)}

/* 棋盘 */
.board-grid{stroke:var(--fg-primary);stroke-width:.6;fill:none;opacity:.3}
html[data-theme="dark"] .board-grid{opacity:.38}
.board-star{fill:var(--fg-primary);opacity:.55}
html[data-theme="dark"] .board-star{opacity:.65}
.board-north{
  font-family:"Noto Serif SC",serif;font-size:16px;font-weight:600;
  fill:var(--brand);letter-spacing:.04em;opacity:.55
}

/* 棋子 */
.stone-player{fill:var(--fg-primary)}
.stone-ai{fill:var(--brand)}
.stone-latest-ring{fill:none;stroke:var(--fg-primary);stroke-width:1;stroke-dasharray:2 2;opacity:.7}
.ai-ring{stroke:var(--brand)}

/* 胜线 */
.win-line{stroke:var(--brand);stroke-width:4;stroke-linecap:round;opacity:0;
  stroke-dasharray:1000;stroke-dashoffset:1000;
  animation:winLineDraw .6s ease-out forwards,winLinePulse 1.4s ease-in-out .6s infinite}
@keyframes winLineDraw{to{opacity:1;stroke-dashoffset:0}}
@keyframes winLinePulse{0%,100%{opacity:1}50%{opacity:.55}}
.win-line.lose{stroke:var(--fg-primary);opacity:.6}

/* 落子动画 */
@keyframes stoneDropIn{
  0%{transform:scale(0);opacity:0}
  60%{transform:scale(1.18);opacity:1}
  100%{transform:scale(1);opacity:1}
}
.stone-new{transform-origin:center;transform-box:fill-box;animation:stoneDropIn .28s cubic-bezier(.3,.9,.3,1.1)}

/* 涟漪 */
@keyframes rippleOut2{
  0%{r:5;opacity:.9;stroke-width:1.2}
  100%{r:22;opacity:0;stroke-width:.3}
}
.stone-ripple{fill:none;stroke:var(--brand);animation:rippleOut2 .55s ease-out forwards}
.stone-ripple.player{stroke:var(--fg-primary)}

/* 鼠标预览 */
.hover-cross{stroke:var(--brand);stroke-width:1;opacity:.7;fill:none;pointer-events:none;transition:opacity .12s}
.hover-cross.hidden{opacity:0}
.hover-dot{fill:var(--brand);opacity:.35;pointer-events:none;transition:opacity .12s}
.hover-dot.hidden{opacity:0}
.compass-wrap.ai-turn{cursor:wait}
.compass-wrap.game-over{cursor:default}

/* ================ 批注式反馈（无实体底板） ================ */
/* 思路：极细引线 + 毛笔小字，贴棋盘边缘游走，不遮挡落子 */
.speech-bubble{
  position:absolute;
  font-family:"Ma Shan Zheng","Noto Serif SC",serif;
  font-size:15px;font-weight:400;letter-spacing:.12em;
  color:var(--fg-primary);white-space:nowrap;
  pointer-events:none;z-index:6;
  transform:translate(0,-50%);
  opacity:0;animation:bubbleIn .35s cubic-bezier(.2,.8,.2,1) forwards;
  padding-left:10px
}
/* 细引线：从锚点横向延伸到文字起点 */
.speech-bubble::before{
  content:"";position:absolute;
  left:0;top:50%;width:var(--line,12px);height:1px;
  background:currentColor;opacity:.45;
  transform-origin:left center
}
/* 左侧小圆点：标出锚位 */
.speech-bubble::after{
  content:"";position:absolute;
  left:calc(var(--line,12px) * -1 - 3px);top:50%;
  width:5px;height:5px;border-radius:50%;
  background:currentColor;transform:translateY(-50%);opacity:.7
}
/* 文字本体的左内边距：让字贴在引线末端 */
.speech-bubble.lead-right{padding-left:10px}
/* 右锚版本：文字在锚点左边（棋子在右半区时用） */
.speech-bubble.right{
  transform:translate(-100%,-50%);
  padding-left:0;padding-right:10px;text-align:right
}
.speech-bubble.right::before{left:auto;right:0}
.speech-bubble.right::after{
  left:auto;right:calc(var(--line,12px) * -1 - 3px)
}

.speech-bubble.urgent{color:var(--brand)}
.speech-bubble.brand{color:var(--brand);font-weight:500}
.speech-bubble.fading{animation:bubbleOut .5s ease forwards}
@keyframes bubbleIn{
  0%{opacity:0;transform:translate(-6px,-50%)}
  100%{opacity:1;transform:translate(0,-50%)}
}
@keyframes bubbleOut{
  0%{opacity:1;transform:translate(0,-50%)}
  100%{opacity:0;transform:translate(4px,-50%)}
}
/* right 版本需要不同的位移动画 */
.speech-bubble.right{animation-name:bubbleInRight}
.speech-bubble.right.fading{animation-name:bubbleOutRight}
@keyframes bubbleInRight{
  0%{opacity:0;transform:translate(calc(-100% + 6px),-50%)}
  100%{opacity:1;transform:translate(-100%,-50%)}
}
@keyframes bubbleOutRight{
  0%{opacity:1;transform:translate(-100%,-50%)}
  100%{opacity:0;transform:translate(calc(-100% - 4px),-50%)}
}

/* 胜负中央大字 */
.verdict{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%) scale(.8);
  font-family:"Noto Serif SC",serif;font-size:110px;font-weight:700;
  color:var(--fg-primary);opacity:0;pointer-events:none;
  transition:all .5s cubic-bezier(.2,.8,.2,1);letter-spacing:.08em;
  text-shadow:0 8px 40px rgba(0,0,0,.15);z-index:4
}
.verdict.win{color:var(--brand)}
.verdict.on{opacity:.92;transform:translate(-50%,-50%) scale(1)}

/* 右下控制栏 */
.compass-foot{
  position:absolute;right:0;bottom:-30px;
  font-family:"JetBrains Mono",monospace;font-size:10px;
  color:var(--fg-tertiary);letter-spacing:.14em;line-height:1.7;text-align:right
}
.compass-foot .restart-link{color:var(--fg-tertiary);text-decoration:underline;text-underline-offset:2px;cursor:pointer;transition:color .15s}
.compass-foot .restart-link:hover{color:var(--brand)}
.compass-foot kbd{
  font-family:"JetBrains Mono",monospace;font-size:9px;padding:1px 5px;
  border:1px solid var(--border-strong);border-radius:3px;background:var(--bg-sunken);
  color:var(--fg-secondary);margin-left:6px
}

/* 左上水印 */
.compass-watermark{
  position:absolute;left:-16px;top:8px;
  font-family:"Fraunces",serif;font-size:92px;font-weight:500;
  color:var(--fg-primary);opacity:.05;letter-spacing:-.04em;line-height:1;
  pointer-events:none;user-select:none
}
html[data-theme="dark"] .compass-watermark{opacity:.08}

@media (max-width:980px){
  .hero-compass{min-height:400px}
  .compass-wrap{width:320px;height:320px}
  .compass-watermark{font-size:64px}
  .verdict{font-size:72px}
  .game-bar{min-width:260px;font-size:10px}
}

/* Hero 角落的数据戳 */
/* ============ 章节通用 ============ */
section{max-width:1280px;margin:0 auto;padding:80px 40px;position:relative}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:40px;padding-bottom:16px;border-bottom:2px solid var(--fg-primary)}
.sec-head .sec-label{display:flex;flex-direction:column;gap:8px}
.sec-head .sec-num{font-family:"JetBrains Mono",monospace;font-size:11px;color:var(--brand);font-weight:700;letter-spacing:.24em}
.sec-head h2{font-family:"Noto Serif SC",serif;font-size:42px;font-weight:600;letter-spacing:-.01em;line-height:1.2}
.sec-head .sec-dek{color:var(--fg-tertiary);font-size:13px;max-width:320px;text-align:right;line-height:1.7}

/* ============ 三条动线 ============ */
.journey-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.journey-card{
  position:relative;background:var(--bg-surface);border:1px solid var(--border-subtle);
  border-radius:16px;padding:32px 28px;cursor:pointer;overflow:hidden;
  transition:all .25s cubic-bezier(.2,.8,.2,1)
}
.journey-card::before{
  content:"";position:absolute;inset:0;border-radius:16px;padding:1.5px;
  background:linear-gradient(135deg,var(--brand),transparent 70%);
  -webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .25s
}
.journey-card:hover{transform:translateY(-6px);box-shadow:0 16px 40px rgba(0,82,217,.12)}
.journey-card:hover::before{opacity:1}
.journey-card .role-num{
  font-family:"Fraunces",serif;font-size:72px;font-weight:500;line-height:1;
  color:var(--border-strong);margin-bottom:14px;letter-spacing:-.02em
}
.journey-card:hover .role-num{color:var(--brand);transition:color .3s}
.journey-card .role-label{font-family:"JetBrains Mono",monospace;font-size:10px;color:var(--brand);letter-spacing:.16em;font-weight:700;margin-bottom:8px}
.journey-card h3{font-family:"Noto Serif SC",serif;font-size:22px;font-weight:600;margin-bottom:10px}
.journey-card .role-person{font-family:"JetBrains Mono",monospace;font-size:11px;color:var(--fg-tertiary);margin-bottom:20px;letter-spacing:.04em}
.journey-card .role-desc{font-size:13px;line-height:1.8;color:var(--fg-secondary);margin-bottom:22px}
.journey-card .role-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:22px}
.journey-card .role-tag{font-size:10px;padding:4px 10px;background:var(--bg-sunken);border-radius:999px;color:var(--fg-secondary);letter-spacing:.02em}
.journey-card .role-entry{
  display:flex;align-items:center;justify-content:space-between;
  padding-top:18px;border-top:1px dashed var(--border-subtle);
  font-size:12px;color:var(--fg-secondary);font-weight:600
}
.journey-card .role-entry .arrow{
  width:28px;height:28px;border-radius:50%;background:var(--bg-sunken);
  display:inline-flex;align-items:center;justify-content:center;
  transition:all .2s
}
.journey-card:hover .role-entry .arrow{background:var(--brand);color:#fff;transform:translateX(4px)}

/* ============ 棋盘 · 模块地图 ============ */
.board-wrap{
  background:var(--bg-surface);border:1px solid var(--border-subtle);
  border-radius:16px;padding:40px;position:relative;overflow:hidden
}
.board-wrap::before{
  content:"";position:absolute;inset:0;pointer-events:none;z-index:0;
  background-image:
    linear-gradient(var(--fg-primary) 1px, transparent 1px),
    linear-gradient(90deg, var(--fg-primary) 1px, transparent 1px);
  background-size:40px 40px;
  background-position:-.5px -.5px;
  opacity:.08;
  -webkit-mask-image:radial-gradient(ellipse at center, #000 35%, transparent 85%);
          mask-image:radial-gradient(ellipse at center, #000 35%, transparent 85%)
}
html[data-theme="dark"] .board-wrap::before{opacity:.12}
.board-map-grid{position:relative;z-index:1;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.board-cell{
  background:var(--bg-canvas);border:1px solid var(--border-subtle);
  border-radius:12px;padding:20px 18px;cursor:pointer;transition:all .2s;
  position:relative;overflow:hidden
}
.board-cell:hover{border-color:var(--brand);transform:translateY(-3px);box-shadow:0 10px 28px rgba(0,82,217,.08)}

/* 权限锁：无权访问的模块格子 */
.board-cell.locked{opacity:.42;filter:grayscale(.6)}
.board-cell.locked:hover{border-color:var(--data-neg);opacity:.75;filter:grayscale(0);transform:translateY(-3px);box-shadow:0 10px 28px rgba(192,57,43,.1)}
.board-cell.locked::before{
  content:"岗外";position:absolute;top:10px;right:10px;z-index:2;
  padding:2px 8px;font-size:9px;letter-spacing:.2em;font-weight:700;
  font-family:"JetBrains Mono",monospace;
  background:var(--data-neg);color:#fff;border-radius:3px
}
.board-cell.locked .cell-icn{color:var(--fg-tertiary)}
.board-cell.locked:hover::before{background:var(--fg-primary)}
.board-cell[data-flag="core"]::after{
  content:"核心";position:absolute;top:10px;right:10px;
  font-family:"JetBrains Mono",monospace;font-size:9px;
  color:#fff;background:var(--brand);padding:2px 6px;border-radius:3px;letter-spacing:.08em
}
.board-cell[data-flag="role"]::after{
  content:"角色";position:absolute;top:10px;right:10px;
  font-family:"JetBrains Mono",monospace;font-size:9px;
  color:var(--fg-secondary);background:var(--bg-sunken);padding:2px 6px;border-radius:3px;letter-spacing:.08em
}
.cell-icn{
  width:36px;height:36px;border-radius:8px;background:var(--bg-sunken);
  display:flex;align-items:center;justify-content:center;color:var(--fg-primary);margin-bottom:14px;
  transition:all .2s
}
.board-cell:hover .cell-icn{background:var(--brand);color:#fff}
.cell-id{font-family:"JetBrains Mono",monospace;font-size:10px;color:var(--fg-tertiary);letter-spacing:.1em;margin-bottom:4px}
.cell-name{font-family:"Noto Serif SC",serif;font-size:15px;font-weight:600;margin-bottom:6px}
.cell-desc{font-size:11px;color:var(--fg-tertiary);line-height:1.6}

/* 业务闭环带：简洁中文版 */
.loop-band{
  display:flex;align-items:center;gap:0;
  padding:16px 20px;background:var(--bg-sunken);border-radius:12px;
  margin-bottom:24px;overflow-x:auto
}
.loop-step{
  font-family:"Noto Serif SC",serif;font-size:14px;font-weight:500;
  color:var(--fg-primary);letter-spacing:.08em;flex-shrink:0;padding:0 6px
}
.loop-arrow{
  color:var(--fg-tertiary);font-family:"JetBrains Mono",monospace;
  font-size:12px;opacity:.5;flex-shrink:0;padding:0 4px
}

/* ============ Philosophy ============ */
.philosophy{
  display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center
}
.philosophy-left h2{
  font-family:"Noto Serif SC",serif;font-size:40px;font-weight:600;line-height:1.3;margin-bottom:24px
}
.philosophy-left h2 .yi{color:var(--brand);font-family:"Fraunces",serif;font-style:italic}
.philosophy-left p{font-size:15px;line-height:1.9;color:var(--fg-secondary);margin-bottom:16px}
.philosophy-right{display:flex;flex-direction:column;gap:20px}
.phi-card{padding:24px 26px;background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:14px;transition:all .2s}
.phi-card:hover{border-color:var(--brand)}
.phi-card .phi-cn{font-family:"Noto Serif SC",serif;font-size:32px;font-weight:700;color:var(--brand);line-height:1;margin-bottom:6px}
.phi-card .phi-en{font-family:"JetBrains Mono",monospace;font-size:10px;color:var(--fg-tertiary);letter-spacing:.16em;text-transform:uppercase;margin-bottom:14px}
.phi-card h4{font-family:"Noto Serif SC",serif;font-size:16px;font-weight:600;margin-bottom:8px}
.phi-card p{font-size:13px;color:var(--fg-secondary);line-height:1.8;margin:0}

/* ============ Footer · 永远深底白字（不随主题切换，保持签名页质感） ============ */
.site-footer{
  background:#0B1020;color:#EAEEF7;padding:60px 40px 28px;margin-top:80px
}
.site-footer .footer-inner{max-width:1280px;margin:0 auto}
.footer-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(234,238,247,.14)}
.footer-brand h3{font-family:"Noto Serif SC",serif;font-size:22px;margin-bottom:10px;color:#EAEEF7}
.footer-brand .ft-motto{font-family:"Noto Serif SC",serif;font-style:italic;color:rgba(234,238,247,.72);font-size:14px;margin-bottom:16px}
.footer-brand .ft-meta{font-family:"JetBrains Mono",monospace;font-size:10px;color:rgba(234,238,247,.5);line-height:1.9;letter-spacing:.04em}
.footer-col h5{font-size:10px;color:rgba(234,238,247,.55);letter-spacing:.2em;text-transform:uppercase;margin-bottom:14px;font-weight:600}
.footer-col a{display:block;font-size:13px;color:rgba(234,238,247,.82);padding:6px 0;transition:color .15s}
.footer-col a:hover{color:#00A4FF}
.footer-bottom{padding-top:24px;display:flex;align-items:center;justify-content:space-between;font-size:11px;color:rgba(234,238,247,.5);font-family:"JetBrains Mono",monospace;letter-spacing:.06em}
.footer-bottom .secret-hint{color:rgba(234,238,247,.4);cursor:default;user-select:none;font-style:italic}

/* ============ 入场动画 ============ */
.reveal{opacity:0;transform:translateY(24px);transition:all .7s cubic-bezier(.2,.8,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ============ 彩蛋出入场 ============ */
.egg-portal{
  position:fixed;inset:0;z-index:200;
  background:radial-gradient(circle at center,rgba(0,82,217,.95),rgba(11,16,32,.98) 70%);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;transition:opacity .5s;color:#fff
}
.egg-portal.on{opacity:1;pointer-events:auto}
.egg-portal h2{font-family:"Ma Shan Zheng","Noto Serif SC",serif;font-size:56px;margin-bottom:14px;text-align:center;font-weight:400;letter-spacing:.06em}
.egg-portal p{font-size:15px;color:rgba(255,255,255,.7);margin-bottom:34px;letter-spacing:.04em;text-align:center;max-width:480px;line-height:1.9}
.egg-portal .portal-compass{
  width:160px;height:160px;margin-bottom:30px;
  background:url('assets/ysn-logo.png') no-repeat center/contain;
  filter:brightness(1.9) drop-shadow(0 0 30px rgba(143,174,232,.5));
  position:relative;
  animation:portalFloat 3.2s ease-in-out infinite
}
@keyframes portalFloat{
  0%,100%{transform:translateY(0) rotate(-2deg);filter:brightness(1.9) drop-shadow(0 0 30px rgba(143,174,232,.5))}
  50%{transform:translateY(-8px) rotate(2deg);filter:brightness(2) drop-shadow(0 0 50px rgba(143,174,232,.8))}
}
.egg-portal .portal-compass::after{display:none}
.egg-portal .enter-btn{
  padding:16px 40px;background:#fff;color:var(--brand);
  border-radius:999px;font-family:"Noto Serif SC",serif;font-size:16px;font-weight:600;
  cursor:pointer;border:0;letter-spacing:.08em;transition:transform .2s
}
.egg-portal .enter-btn:hover{transform:scale(1.06)}
.egg-portal .dismiss{
  margin-top:20px;color:rgba(255,255,255,.5);font-size:12px;
  font-family:"JetBrains Mono",monospace;cursor:pointer;letter-spacing:.08em
}
.egg-portal .dismiss:hover{color:#fff}

/* 响应式 */
@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr}
  .hero h1{font-size:52px}
  .journey-grid{grid-template-columns:1fr}
  .board-map-grid{grid-template-columns:repeat(2,1fr)}
  .philosophy{grid-template-columns:1fr;gap:40px}
  .footer-top{grid-template-columns:1fr 1fr;gap:30px}
  section{padding:60px 24px}
  .hero{padding:48px 24px 40px}
  .site-top-inner{padding:14px 24px}
  .site-nav{display:none}
}