/* ============================================================
   LESLY LEE — PORTFOLIO
   风格：Industrial（工业风 · 黑白灰）
   ------------------------------------------------------------
   设计原则：
   1. 只用黑 / 白 / 灰。没有彩色。强调靠明度反差与面积对比
   2. 直角为主（radius 0~2px），像钢板与丝网印刷
   3. 结构外露：细网格线、刻度、编号、技术标注（mono 小字）
   4. 大量 uppercase + 拉开的字距，像设备铭牌 / 工程图纸
   5. 动效机械：位移与揭示，不做柔顺的弹跳
   ============================================================ */

:root{
  --font: "Inter","Helvetica Neue",Helvetica,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
  --display: var(--font);
  --mono: ui-monospace,"SFMono-Regular","JetBrains Mono","Roboto Mono",Menlo,Consolas,monospace;

  /* 工业风：近乎直角 */
  --radius:2px;
  --radius-sm:1px;
  --radius-lg:2px;

  --gutter:28px;
  --rule:1px;
  --wrap-pad:clamp(20px,3.4vw,40px);

  /* case study 垂直节奏：模块间 / 标题到内容 / 内容块之间 */
  --cs-sec-gap:76px;
  --cs-head-gap:16px;
  --cs-block-gap:20px;

  --nav-gap:0px;
  --nav-box-h:60px;
  --nav-h:60px;
}

/* ---------- 亮色：水泥灰底 + 近黑字 ---------- */
html[data-theme="light"]{
  --bg:#F4F4F2;              /* 水泥 / 纸灰，不是纯白 */
  --bg-soft:#EAEAE7;
  --card:#FCFCFB;
  --card-2:#E4E4E1;
  --line:#D2D2CE;
  --line-strong:#9C9C97;
  --text:#141414;
  --muted:#6E6E6A;

  --ink:#141414;
  --shadow-ink:rgba(0,0,0,.10);

  /* 「强调色」= 黑。整站无彩色 */
  --primary:#141414;
  --primary-soft:rgba(20,20,20,.07);
  --primary-dim:#000000;
  --accent:#141414;
  --accent-ink:#F4F4F2;
  --on-primary:#F4F4F2;      /* 放在黑底上的字色 */
  --sec:#8C8C88;
  --light:#EAEAE7;

  --nav-bg:rgba(244,244,242,.86);
  --hero-bg:#F4F4F2;

  /* 工业风：几乎不用投影，靠线条分层 */
  --shadow-sm:0 1px 0 rgba(0,0,0,.05);
  --shadow-md:0 1px 0 rgba(0,0,0,.07),0 6px 16px rgba(0,0,0,.06);
  --shadow-lg:0 1px 0 rgba(0,0,0,.08),0 18px 40px rgba(0,0,0,.10);

  --grid-ink:rgba(20,20,20,.055);   /* 网格线颜色 */
}

/* ---------- 暗色：机油黑 + 冷灰 ---------- */
html[data-theme="dark"]{
  --bg:#0E0E0E;
  --bg-soft:#161616;
  --card:#161616;
  --card-2:#1E1E1E;
  --line:#2C2C2C;
  --line-strong:#4A4A4A;
  --text:#EDEDEB;
  --muted:#8E8E8A;

  --ink:#EDEDEB;
  --shadow-ink:rgba(0,0,0,.6);

  --primary:#EDEDEB;
  --primary-soft:rgba(237,237,235,.10);
  --primary-dim:#FFFFFF;
  --accent:#EDEDEB;
  --accent-ink:#0E0E0E;
  --on-primary:#0E0E0E;
  --sec:#5E5E5A;
  --light:#1E1E1E;

  --nav-bg:rgba(14,14,14,.86);
  --hero-bg:#0E0E0E;

  --shadow-sm:0 1px 0 rgba(0,0,0,.4);
  --shadow-md:0 1px 0 rgba(0,0,0,.5),0 6px 16px rgba(0,0,0,.4);
  --shadow-lg:0 1px 0 rgba(0,0,0,.6),0 18px 40px rgba(0,0,0,.55);

  --grid-ink:rgba(237,237,235,.055);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--text);font-family:var(--font);line-height:1.62;
  overflow-x:hidden;-webkit-font-smoothing:antialiased;
  font-feature-settings:"kern" 1,"liga" 1,"cv11" 1;   /* Inter：更端正的字形 */
  transition:background-color .35s ease,color .35s ease;
}

/* ---------- 标题：统一 Inter，靠字重与字号建立层级 ---------- */
h1,h2,h3,h4{
  font-family:var(--font);
  font-weight:600;              /* 极简：不再用超粗字重 */
  letter-spacing:-.022em;
  line-height:1.1;
}
h1{font-size:clamp(2.7rem,6.5vw,5.4rem)}
h2{font-size:clamp(1.9rem,4.2vw,3.2rem)}
h3{font-size:clamp(1.2rem,2vw,1.55rem)}
/* hero 状态胶囊：左侧一枚呼吸的小圆点 */
.hero-sticker{
  display:inline-flex;align-items:center;gap:8px;
  background:transparent;color:var(--text);
  border:var(--rule) solid var(--line-strong);border-radius:0;box-shadow:none;
  padding:8px 16px;
  font-family:var(--mono);font-size:.68rem;font-weight:500;
  letter-spacing:.18em;text-transform:uppercase;
  margin-bottom:30px;
  transition:background .25s ease;
  animation:stickPop .7s cubic-bezier(.16,.84,.24,1) .2s backwards;
}
.hero-sticker::before{
  content:"";width:5px;height:5px;border-radius:0;
  background:var(--primary);flex:0 0 auto;
  animation:dotPulse 2.4s ease-in-out infinite;
}
@keyframes dotPulse{0%,100%{opacity:1}50%{opacity:.3}}
@keyframes stickPop{
  from{opacity:0;transform:translateY(8px)}
  to  {opacity:1;transform:none}
}
.hero-sticker:hover{background:var(--bg-soft)}
@media (max-width:640px){.hero-sticker{font-size:.66rem;padding:8px 16px;margin-bottom:22px}}

/* ---------- 标注 / 元数据：小号大写 ---------- */
.label,.k{
  font-family:var(--mono);
  font-size:.66rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
  font-weight:500;
}
::selection{background:var(--primary);color:var(--on-primary)}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1080px;margin:0 auto;padding:0 var(--wrap-pad)}
.wrap.wide{max-width:1400px}

/* ---------- scroll progress ---------- */
.scroll-progress{position:fixed;top:0;left:0;height:2px;width:0;z-index:300;background:var(--primary)}

/* ---------- nav ---------- */
/* 工业风：导航贴顶通栏，底部一条实线把它和内容切开 —— 像仪表盘的标题条。
   不再用悬浮圆角框。 */
body > nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  padding:0;
  background:var(--nav-bg);
  border-bottom:var(--rule) solid var(--line-strong);
  backdrop-filter:saturate(180%) blur(18px);-webkit-backdrop-filter:saturate(180%) blur(18px);
  transition:background-color .35s ease,border-color .35s ease;
}
body > nav .nav-inner{
  max-width:1400px;margin:0 auto;
  height:var(--nav-box-h);
  padding:0 var(--wrap-pad);
  display:flex;align-items:center;justify-content:space-between;
  position:relative;z-index:1;
}
/* 一级导航项之间用竖分隔线，像配电盘上的分区 */
body > nav .nav-links{position:relative}
body > nav .nav-links > a,
body > nav .nav-links > .nav-sub-wrap{position:relative}
body > nav.scrolled{border-bottom-color:var(--line-strong)}
/* ---------- nav mega menu：Work 的二级 / 三级菜单 ---------- */
/* 结构：.nav-sub-wrap > (a.Work + .nav-drop)
   .nav-drop 里左列是分类（二级），右列是该分类下的项目（三级）。
   悬停在分类上切换右列内容，点项目直接进 case 详情。 */
.nav-sub-wrap{position:relative;display:inline-flex;align-items:center}
/* Work 旁边的下拉指示箭头：展开时翻转 180° */
.nav-caret{
  width:9px;height:6px;margin-left:7px;flex:0 0 auto;
  transition:transform .25s ease;
}
.nav-sub-wrap.open .nav-caret{transform:rotate(180deg)}
.nav-drop{
  position:absolute;top:100%;left:-16px;
  margin-top:0;
  width:min(660px,calc(100vw - 2 * var(--wrap-pad)));
  background:var(--card);
  border:var(--rule) solid var(--line-strong);border-radius:0;
  box-shadow:var(--shadow-md);
  opacity:0;visibility:hidden;
  transform:translateY(-6px);
  transform-origin:top left;
  transition:opacity .22s ease,transform .28s cubic-bezier(.2,.7,.2,1),visibility .22s;
  overflow:hidden;
  text-transform:none;letter-spacing:normal;
}
.nav-sub-wrap.open .nav-drop{opacity:1;visibility:visible;transform:none}
html[data-theme="dark"] .nav-drop{box-shadow:var(--shadow-sm)}
/* 悬停时鼠标要从导航项走到面板，中间那段间隙用透明桥补上，避免菜单闪掉 */
.nav-drop::before{
  content:"";position:absolute;left:0;right:0;top:-8px;height:10px;
}
.nd-grid{display:grid;grid-template-columns:210px minmax(0,1fr)}
.nd-cats{
  padding:14px 12px;background:var(--bg-soft);
  border-right:var(--rule) solid var(--line-strong);
}
.nd-hd{
  font-size:.58rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;
  color:var(--muted);padding:4px 10px 10px;
}
/* --- 二级：分类（只有名字 + 一个指示箭头，不放数量/说明） --- */
.nd-cat{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 11px;border-radius:var(--radius-sm);
  border:var(--rule) solid transparent;
  color:var(--text);
  transition:background .18s ease,border-color .18s ease,transform .18s ease;
}
.nd-cat-t{font-size:.86rem;font-weight:600;line-height:1.2}
.nd-cat-ar{
  flex:0 0 auto;color:var(--muted);font-size:1rem;line-height:1;
  opacity:0;transform:translateX(-3px);
  transition:opacity .18s ease,transform .18s ease;
}
.nd-cat.on{background:var(--card);border-color:transparent;box-shadow:var(--shadow-sm)}
html[data-theme="dark"] .nd-cat.on{box-shadow:var(--shadow-sm)}
.nd-cat.on .nd-cat-ar{opacity:1;transform:none;color:var(--primary)}

/* --- 三级：具体项目 --- */
.nd-items{position:relative;padding:14px 12px 10px;min-height:196px}
.nd-pane{display:none}
.nd-pane.on{display:block}
.nd-pane.swap .nd-item{animation:ndIn .34s cubic-bezier(.2,.7,.2,1) both}
.nd-pane.swap .nd-item:nth-child(2){animation-delay:.03s}
.nd-pane.swap .nd-item:nth-child(3){animation-delay:.06s}
@keyframes ndIn{from{opacity:0;transform:translateX(-8px)}to{opacity:1;transform:none}}

.nd-item{
  display:flex;align-items:center;gap:11px;
  padding:8px 10px;border-radius:var(--radius-sm);
  color:var(--text);
  transition:background .18s ease,transform .18s ease;
}
.nd-sw{
  /* 与项目卡片封面一致：16:9。宽度 56px，高度按比例自动（约 31.5px） */
  flex:0 0 auto;width:56px;aspect-ratio:16/9;border-radius:3px;
  border:var(--rule) solid var(--line);background-position:center;
  background-size:cover;
}
.nd-tx{display:flex;flex-direction:column;gap:2px;min-width:0;flex:1}
.nd-t{
  font-size:.85rem;font-weight:650;line-height:1.25;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.nd-d{font-size:.64rem;font-weight:500;color:var(--muted);line-height:1.2}
.nd-ar{
  flex:0 0 auto;color:var(--muted);font-size:.85rem;
  opacity:0;transform:translateX(-4px);
  transition:opacity .18s ease,transform .18s ease;
}
.nd-item:hover{background:var(--bg-soft);transform:translateX(3px)}
.nd-item:hover .nd-ar{opacity:1;transform:none;color:var(--primary)}

/* 「See all」入口：只有该分类项目多于 MAX_ITEMS 时才由 JS 输出。
   做成一条带上分隔线的行，和上面 3 条项目区分开。 */
.nd-more{
  display:flex;align-items:center;gap:6px;
  margin:8px 10px 4px;padding-top:9px;
  border-top:1px solid var(--line);
  font-size:.7rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;
  color:var(--primary);
  transition:gap .2s ease;
}
.nd-more:hover{gap:11px}
@media (max-width:1080px){
  .nav-drop{width:min(560px,calc(100vw - 2 * var(--wrap-pad)))}
  .nd-grid{grid-template-columns:184px minmax(0,1fr)}
}
@media (prefers-reduced-motion:reduce){
  .nd-pane.swap .nd-item{animation:none}
}

/* ---------- 汉堡菜单里的 Work 折叠子层 ---------- */
.mm-group{position:relative}
.mm-toggle{
  /* 竖直对齐一级菜单文字的中线；右侧留出编号（::after）的位置 */
  position:absolute;right:42px;top:20px;
  width:30px;height:30px;padding:0;
  display:flex;align-items:center;justify-content:center;
  background:transparent;border:var(--rule) solid var(--line);border-radius:var(--radius-sm);
  cursor:pointer;
}
.mm-toggle span{position:absolute;background:var(--text);border-radius:2px}
.mm-toggle span:first-child{width:12px;height:2px}
.mm-toggle span:last-child{width:2px;height:12px;transition:transform .25s ease}
.mm-group.open .mm-toggle span:last-child{transform:scaleY(0)}
.mm-sub{
  display:none;
  padding:2px 0 12px 2px;
  border-left:var(--rule) solid var(--line);margin-left:4px;
}
.mm-group.open .mm-sub{display:block}
.mm-cat{margin-bottom:12px}
.mm-cat-t{
  display:flex!important;align-items:center;gap:8px;
  font-size:.8rem!important;font-weight:600!important;
  letter-spacing:.16em;text-transform:uppercase;color:var(--muted)!important;
  padding:6px 0 4px 12px!important;
}
.mm-cat-t::after{content:none!important;counter-increment:none!important}
.mm-item{
  font-size:1.05rem!important;font-weight:600!important;
  padding:7px 0 7px 12px!important;color:var(--text)!important;
}
.mm-item::after{content:none!important;counter-increment:none!important}
.mm-item:hover{color:var(--primary)!important}

/* logo：工业铭牌 —— 全大写 + 宽字距，像机器外壳上的型号丝印 */
.logo{
  font-family:var(--font);font-weight:600;font-size:.94rem;
  letter-spacing:.2em;text-transform:uppercase;line-height:1;color:var(--text);
  transition:opacity .25s ease;
}
.logo:hover{opacity:.6}
.logo em{font-style:normal;color:var(--muted)}
.nav-links{
  display:flex;gap:0;color:var(--muted);
  font-family:var(--mono);font-size:.7rem;font-weight:500;
  letter-spacing:.16em;text-transform:uppercase;
}
/* 只命中一级导航项本身：.nav-links 的直接子 <a>，以及带下拉的 Work。
   不能写成 .nav-links a —— 下拉面板也在 .nav-links 里，
   会把面板里的分类/项目一起套上"黑底白字"，箭头就看不见了。 */
.nav-links > a,
.nav-links > .nav-sub-wrap > a{
  position:relative;
  display:inline-flex;align-items:center;
  height:var(--nav-box-h);
  padding:0 17px;border-radius:0;
  border:0;
  transition:color .2s ease,background .2s ease;
}
/* 工业风：导航项之间画竖分隔线，像配电盘分区 */
.nav-links > a::before,
.nav-links > .nav-sub-wrap::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:1px;height:12px;background:var(--line);
}
.nav-links > a:first-child::before{display:none}
/* hero 下方的下划标记：选中 / 悬停时从底部长出一条粗线 */
.nav-links > a::after,
.nav-links > .nav-sub-wrap > a::after{
  content:"";position:absolute;left:17px;right:17px;bottom:0;height:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform .26s cubic-bezier(.2,.7,.2,1);
}
.nav-links > a:hover,
.nav-links > .nav-sub-wrap > a:hover{color:var(--text);background:var(--bg-soft)}
.nav-links > a:hover::after,
.nav-links > .nav-sub-wrap > a:hover::after{transform:scaleX(1)}
.nav-links > a.active,
.nav-links > .nav-sub-wrap > a.active{color:var(--text)}
.nav-links > a.active::after,
.nav-links > .nav-sub-wrap > a.active::after{transform:scaleX(1)}
/* 面板展开时，Work 高亮，视觉上和面板是一体 */
.nav-sub-wrap.open > a{background:var(--bg-soft);color:var(--text)}
.nav-sub-wrap.open > a::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:12px}
/* ---------- 语言切换 ---------- */
/* 工业风：和主题按钮同一套语言 —— 方形硬边 + mono 大写小字 */
.lang-btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:32px;padding:0 10px;
  border:var(--rule) solid var(--line-strong);border-radius:0;
  background:transparent;color:var(--muted);
  font-family:var(--mono);font-size:.64rem;font-weight:500;
  letter-spacing:.14em;text-transform:uppercase;
  white-space:nowrap;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.lang-btn:hover{background:var(--primary);color:var(--on-primary);border-color:var(--primary)}
@media (max-width:640px){
  .lang-btn{height:28px;padding:0 8px;font-size:.58rem;letter-spacing:.1em}
}
.theme-btn{
  width:32px;height:32px;border-radius:0;border:var(--rule) solid var(--line-strong);background:transparent;
  display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text);
  transition:background .2s;
}
.theme-btn:hover{background:var(--primary);color:var(--on-primary);border-color:var(--primary)}
.theme-btn svg{width:16px;height:16px;fill:currentColor;transition:transform .45s cubic-bezier(.2,.7,.2,1)}
.theme-btn:hover svg{opacity:1}
.burger{display:none;background:none;border:0;cursor:pointer;color:var(--text);font-size:1.4rem;line-height:1}
.mobile-menu{
  /* 全高抽屉，但宽度只占屏幕 4/5，左侧露出背后页面 + 遮罩 */
  display:none;position:fixed;top:0;right:0;bottom:0;
  width:80vw;max-width:420px;
  overflow-y:auto;-webkit-overflow-scrolling:touch;
  background:var(--bg);border-left:1px solid var(--line);
  padding:18px 0 32px;flex-direction:column;gap:0;z-index:110;
  box-shadow:-18px 0 48px rgba(0,0,0,.18);
  font-family:var(--font);font-size:1.05rem;font-weight:500;line-height:1.4;
}
.mobile-menu.open{display:flex;animation:mmIn .26s cubic-bezier(.2,.7,.2,1)}
@keyframes mmIn{from{transform:translateX(100%)}to{transform:none}}
@media (prefers-reduced-motion:reduce){.mobile-menu.open{animation:none}}
/* 顶部：标题 + 明确的关闭按钮 */
.mm-head{display:flex;align-items:center;gap:10px;padding:2px 20px 14px;margin-bottom:8px;border-bottom:1px solid var(--line)}
.mm-head .mm-t{font-family:var(--mono);font-size:.64rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted)}
.mm-close{
  margin-left:auto;width:38px;height:38px;flex:0 0 38px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  background:var(--text);color:var(--bg);border:0;border-radius:50%;
  transition:opacity .2s,transform .2s;
}
.mm-close svg{width:16px;height:16px;stroke:currentColor;stroke-width:2.2;fill:none}
.mm-close:hover{opacity:.85;transform:rotate(90deg)}
.mobile-menu a{
  color:var(--text);font-weight:500;letter-spacing:0;text-transform:none;
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 20px;margin:2px 10px;border-radius:8px;
  transition:background .2s,color .2s;
}
.mobile-menu a:hover{background:var(--bg-soft)}
/* 右侧小箭头，更像导航 */
.mobile-menu a::after{content:"→";font-family:var(--font);font-size:1rem;color:var(--muted);opacity:.5}
.mobile-menu a:hover::after{opacity:1;color:var(--primary)}
.mobile-menu a.active{color:var(--primary);background:var(--primary-soft);text-decoration:none}
.mobile-menu a.active::after{color:var(--primary);opacity:1}
/* 遮罩：点左侧空白也能关 */
.mm-backdrop{position:fixed;inset:0;z-index:104;background:rgba(0,0,0,.28);display:none}
.mm-backdrop.open{display:block}

/* ---------- buttons / labels ---------- */
/* 按钮：直角、无阴影、mono 小字大写 —— 像印刷品上的功能标记 */
.btn{
  display:inline-flex;align-items:center;gap:10px;padding:14px 26px;
  border-radius:0;
  font-family:var(--mono);font-size:.74rem;font-weight:500;
  letter-spacing:.16em;text-transform:uppercase;
  cursor:pointer;
  border:var(--rule) solid var(--primary);
  transition:transform .15s ease,box-shadow .15s ease,background .2s ease;
}
.btn-primary{background:var(--primary);color:var(--on-primary);box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--primary-dim);transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn:active{transform:translateY(0) !important;opacity:.85}
.tag{
  font-family:var(--mono);font-size:.62rem;font-weight:500;letter-spacing:.13em;text-transform:uppercase;
  padding:3px 9px;border-radius:0;
  border:var(--rule) solid var(--line);color:var(--muted);background:transparent;
}
.chip{
  font-family:var(--mono);font-size:.66rem;font-weight:500;letter-spacing:.12em;text-transform:uppercase;
  padding:5px 11px;border-radius:0;
  border:var(--rule) solid var(--line);color:var(--text);background:transparent;
  transition:background .2s ease,color .2s ease;
}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.chip:hover{background:var(--primary);color:var(--on-primary);border-color:var(--primary)}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  min-height:100vh;display:flex;align-items:center;justify-content:center;
  padding:150px 0 130px;background:var(--hero-bg);transition:background .35s ease;
  text-align:center;               /* 苹果式：大标题居中 */
}
/* ambient背景：细网格 + 跟随光标的柔光 */
.hero-bg{position:absolute;inset:0;pointer-events:none;z-index:0}
/* ---------- 首屏悬浮小卡片 ---------- */
.hero-floats{position:absolute;inset:0;z-index:0;pointer-events:none}
.hf{
  position:absolute;border-radius:0;overflow:hidden;
  border:var(--rule) solid var(--line-strong);box-shadow:none;
  animation:hfFloat ease-in-out infinite;
}
.hf > div,.hf > img{width:100%;height:100%;object-fit:cover;display:block}
/* 极简：只上下漂浮，不带旋转 */
@keyframes hfFloat{
  0%,100%{transform:translateY(0)}
  50%    {transform:translateY(-12px)}
}
.hf1{left:6%;top:20%;width:150px;aspect-ratio:3/4;animation-duration:6s}
.hf2{left:13%;bottom:15%;width:190px;aspect-ratio:4/3;animation-duration:7s;animation-delay:.8s}
.hf3{left:2%;top:55%;width:112px;aspect-ratio:1/1;animation-duration:5.5s;animation-delay:1.6s}
.hf4{right:6%;top:18%;width:175px;aspect-ratio:4/3;animation-duration:6.5s;animation-delay:.4s}
.hf5{right:12%;bottom:14%;width:140px;aspect-ratio:3/4;animation-duration:7.5s;animation-delay:1.2s}
.hf6{right:1.5%;top:54%;width:106px;aspect-ratio:1/1;animation-duration:5.8s;animation-delay:2s}
@media (max-width:1040px){.hero-floats{display:none}}
/* 工业风：蓝图 / 坐标纸网格。结构完全外露，是主要视觉元素。
   细网格 40px + 粗网格 200px 两层叠加，边缘用 mask 渐隐。 */
.hero-bg .grid-lines{
  position:absolute;inset:0;
  background-image:
    linear-gradient(to right,var(--grid-ink) 1px,transparent 1px),
    linear-gradient(to bottom,var(--grid-ink) 1px,transparent 1px),
    linear-gradient(to right,var(--grid-ink) 1px,transparent 1px),
    linear-gradient(to bottom,var(--grid-ink) 1px,transparent 1px);
  background-size:40px 40px,40px 40px,200px 200px,200px 200px;
  -webkit-mask-image:radial-gradient(ellipse 90% 80% at 50% 42%,#000 30%,transparent 78%);
          mask-image:radial-gradient(ellipse 90% 80% at 50% 42%,#000 30%,transparent 78%);
}
@keyframes gridDrift{to{background-position:40px 40px,40px 40px,200px 200px,200px 200px}}
/* 中性灰光斑：跟随光标，像顶灯照在钢板上 */
.hero-bg .glow{
  position:absolute;width:900px;height:900px;border-radius:50%;
  left:var(--gmx,50%);top:var(--gmy,44%);transform:translate(-50%,-50%);
  background:radial-gradient(circle,rgba(20,20,20,.055),transparent 62%);
  transition:opacity .6s ease;
}
html[data-theme="dark"] .hero-bg .glow{background:radial-gradient(circle,rgba(237,237,235,.07),transparent 64%)}
.hero-content{position:relative;z-index:1;width:100%}
/* hero 顶部：一条规则线 + 左右两端的元数据，像杂志的天头 */
.hero-rule{
  display:flex;align-items:baseline;justify-content:space-between;gap:20px;
  margin-bottom:26px;padding-bottom:12px;border-bottom:var(--rule) solid var(--line);
  font-family:var(--mono);font-size:.66rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--muted);
}
.hero-rule .r-r{color:var(--text)}

/* hero 标题：逐词升起，居中；苹果式的大号粗标题 */
.hero h1{font-size:clamp(3rem,7vw,5.8rem);margin:8px auto 26px;max-width:16ch;font-weight:600}
.hero h1 .accent{color:var(--primary)}
.h-reveal .w{display:inline-block;overflow:hidden;vertical-align:top;padding-bottom:.14em;margin-bottom:-.14em}
.h-reveal .w > i{
  display:inline-block;font-style:normal;transform:translateY(115%);
  animation:wUp .95s cubic-bezier(.16,.84,.24,1) forwards;
}
@keyframes wUp{to{transform:translateY(0)}}
.h-reveal .w:nth-child(1) > i{animation-delay:.10s}
.h-reveal .w:nth-child(2) > i{animation-delay:.19s}
.h-reveal .w:nth-child(3) > i{animation-delay:.28s}
.h-reveal .w:nth-child(4) > i{animation-delay:.37s}
.h-reveal .w:nth-child(5) > i{animation-delay:.46s}

.fade-up{opacity:0;transform:translateY(18px);animation:fadeUp .9s cubic-bezier(.16,.84,.24,1) forwards}
@keyframes fadeUp{to{opacity:1;transform:none}}
.dl1{animation-delay:.55s}.dl2{animation-delay:.68s}

/* 副标题：无衬线，尺寸克制，和巨大的衬线标题形成对比 */
.type-line{
  font-family:var(--font);font-size:clamp(1.06rem,1.6vw,1.28rem);
  color:var(--muted);min-height:1.8em;max-width:46ch;line-height:1.55;margin:0 auto;
}
.type-line .caret{display:inline-block;width:8px;height:1.05em;background:var(--primary);vertical-align:-.14em;animation:blink 1.05s step-end infinite}
@keyframes blink{50%{opacity:0}}
.hero-cta{display:flex;gap:18px;justify-content:center;margin-top:40px;flex-wrap:wrap}
/* CTA：直角硬边，hover 反色 */
.hero-link{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--mono);font-size:.72rem;font-weight:500;
  letter-spacing:.16em;text-transform:uppercase;
  color:var(--on-primary);background:var(--primary);
  border:var(--rule) solid var(--primary);border-radius:0;
  padding:15px 28px;
  transition:transform .15s ease,box-shadow .15s ease,background .2s ease;
}
.hero-link .hl-arr{display:inline-block;transition:transform .3s cubic-bezier(.2,.7,.2,1)}
.hero-link:hover{transform:translateY(-1px);background:var(--primary-dim)}
.hero-link:hover .hl-arr{transform:translateX(4px)}
.hero-link:active{transform:none;opacity:.86}
.hero-link + .hero-link{background:transparent;color:var(--text);border-color:var(--line-strong)}
.hero-link + .hero-link:hover{background:var(--primary);color:var(--on-primary);border-color:var(--primary)}
@media (max-width:640px){.hero-cta{gap:12px}.hero-link{padding:13px 22px;font-size:.92rem}}

/* 大屏之外逐步收起飘浮卡片 */
@media (max-width:1240px){.hf3,.hf6{display:none}}

/* ---------- 数据条：横向跑马灯（替代三个孤零零的数字） ---------- */
.ticker{
  position:relative;margin-top:52px;overflow:hidden;
  padding:6px 0;
}
.ticker-track{display:flex;width:max-content;animation:tick 30s linear infinite}
.ticker:hover .ticker-track{animation-play-state:paused}
@keyframes tick{to{transform:translateX(-50%)}}
.ticker-track > span{
  display:inline-flex;align-items:center;gap:14px;padding:0 22px;flex-shrink:0;
  font-size:1rem;font-weight:450;letter-spacing:0;
  color:var(--bg);white-space:nowrap;
}
.ticker-track > span b{color:var(--bg);font-weight:500}
.ticker-track > span em{
  font-style:normal;font-size:1.05rem;font-weight:600;
  color:var(--accent);letter-spacing:-.02em;
}
.ticker-track .sep{width:4px;height:4px;background:var(--accent);border-radius:50%;padding:0;margin:0 8px}
/* 首页全宽跑马灯条 */
/* 跑马灯：跟随主题的一条安静分隔带 */
.marquee-strip{
  background:var(--bg);
  border-top:var(--rule) solid var(--line);border-bottom:var(--rule) solid var(--line);
  padding:18px 0;margin:0;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
          mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
}
.marquee-strip .ticker-track > span{color:var(--muted)}
.marquee-strip .ticker-track > span b{color:var(--text);font-weight:500}
.marquee-strip .ticker-track > span em{color:var(--primary);font-weight:600}
.marquee-strip .ticker-track .sep{background:var(--line-strong)}
@keyframes railRun{0%{top:-52px}60%,100%{top:52px}}

@media (max-width:760px){
  /* hero 高度随内容自适应，不再被 100vh + overflow 裁掉 */
  .hero{padding:112px 0 72px;min-height:auto}
}
@media (prefers-reduced-motion:reduce){
  .h-reveal .w > i{transform:none;animation:none}
  .fade-up{opacity:1;transform:none;animation:none}
  .hero-bg .grid-lines{animation:none}
}

/* ---------- page hero (subpages) ---------- */
/* ---------- 统一页面开场（Blog / About / Contact 共用） ----------
   与首页 / Work / Gallery 同一套语言：
   mono kicker · 逐词升起标题 · 居中副标题 · mono 元数据行 · ambient 背景 */
.page-hero{
  position:relative;overflow:hidden;
  padding:172px 0 100px;text-align:left;
  background:var(--hero-bg);transition:background .35s ease;
}
.page-hero .ph-bg{position:absolute;inset:0;z-index:0;pointer-events:none}
.page-hero .ph-bg .grid-lines{
  position:absolute;inset:0;
  background-image:
    linear-gradient(to right,var(--grid-ink) 1px,transparent 1px),
    linear-gradient(to bottom,var(--grid-ink) 1px,transparent 1px);
  background-size:40px 40px,40px 40px;
  -webkit-mask-image:radial-gradient(ellipse 92% 88% at 30% 40%,#000 22%,transparent 76%);
          mask-image:radial-gradient(ellipse 92% 88% at 30% 40%,#000 22%,transparent 76%);
}
/* 中性灰光斑，极淡 */
.page-hero .ph-bg .orb{
  position:absolute;left:50%;top:28%;width:720px;height:720px;transform:translate(-50%,-50%);
  border-radius:50%;
  background:radial-gradient(circle,rgba(20,20,20,.05),transparent 62%);
  animation:orbFloat 18s ease-in-out infinite;
}
html[data-theme="dark"] .page-hero .ph-bg .orb{background:radial-gradient(circle,rgba(237,237,235,.06),transparent 72%)}
@keyframes orbFloat{50%{transform:translate(-50%,-56%) scale(1.06)}}
.page-hero .ph-inner{position:relative;z-index:1}
.page-hero h1{font-size:clamp(2.8rem,7vw,5.6rem);margin:0 0 20px;max-width:22ch}
.page-hero .sub{color:var(--muted);max-width:52ch;margin:0;font-size:1.04rem;line-height:1.6}

/* 共用：mono kicker */
.k{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:.66rem;letter-spacing:.2em;text-transform:uppercase;
  color:var(--muted);font-weight:500;margin-bottom:18px;
}
/* 前置一段短横线，像工程图上的引出线 */
.k::before{content:"";width:26px;height:1px;background:var(--line-strong);flex:0 0 auto}
/* 共用：mono 元数据行 */
.hero-meta{
  display:flex;gap:0;flex-wrap:wrap;justify-content:flex-start;margin-top:26px;
  font-family:var(--mono);font-size:.66rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);
}
.hero-meta > span{padding-right:26px;margin-right:26px;border-right:var(--rule) solid var(--line)}
.hero-meta > span:last-child{border-right:0;margin-right:0;padding-right:0}
.hero-meta b{color:var(--text);font-weight:500;font-size:.8rem}
@media (max-width:560px){
  .hero-meta{gap:6px 0}
  .hero-meta > span{padding-right:16px;margin-right:16px}
}

/* ---------- sections ---------- */
section{padding:120px 0}
/* 章节头：整行贯通细线 + 左标题 + 右链接，全站统一 */
/* 区块标题：顶部一条规则线贯通整宽，标题与说明分栏排布 ——
   顶部一条粗规则线 + 左标题右链接。 */
.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:40px;flex-wrap:wrap;
  margin-bottom:60px;
  padding-top:22px;border-top:2px solid var(--primary);
}
.sec-head .sh-left{max-width:680px;flex:1 1 340px}
.sec-title{
  font-size:clamp(2rem,4.6vw,3.4rem);
  font-weight:600;letter-spacing:-.024em;line-height:1.06;margin:0;
}
.sec-desc{
  color:var(--muted);font-size:.98rem;margin-top:18px;max-width:52ch;line-height:1.6;
}
/* 右侧「查看全部」，替代原来居中的按钮 */
.sec-link{
  display:inline-flex;align-items:center;gap:11px;flex-shrink:0;
  font-family:var(--mono);font-size:.66rem;letter-spacing:.18em;text-transform:uppercase;
  font-weight:500;color:var(--text);padding:9px 14px;
  border:var(--rule) solid var(--line-strong);
  transition:background .24s ease,color .24s ease,border-color .24s ease;
}
.sec-link .arw{
  width:20px;height:20px;border-radius:0;
  border:var(--rule) solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;
  transition:background .3s,color .3s,border-color .3s;
}
.sec-link:hover{background:var(--primary);color:var(--on-primary);border-color:var(--primary)}
.sec-link:hover .arw{background:transparent;color:var(--on-primary);border-color:var(--on-primary)}
@media (max-width:640px){.sec-head{margin-bottom:36px}}

/* ---------- work cards ---------- */
/* fixed 3-column track: card size stays IDENTICAL whether 1, 2, 3 or 6 cards show */
.work-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:30px;align-items:stretch}
@media (max-width:1000px){.work-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.work-grid{grid-template-columns:minmax(0,1fr)}}
/* 卡片：细线界定 + 顶部黑线揭示。
   保持 flex column 让同排卡片等高。 */
.card{
  background:var(--card);
  border:var(--rule) solid var(--line);
  border-radius:0;
  box-shadow:none;
  overflow:hidden;position:relative;
  display:flex;flex-direction:column;height:100%;
  transition:transform .3s cubic-bezier(.2,.7,.2,1),border-color .3s ease,box-shadow .3s ease;
}
/* 顶部一条黑色揭示线，hover 时从左往右刷过 —— 像机床的行程标记 */
.card::after{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;z-index:3;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform .42s cubic-bezier(.2,.7,.2,1);
}
.card:hover::after{transform:scaleX(1)}
.card:hover{
  transform:translateY(-4px);
  border-color:var(--primary);
  box-shadow:var(--shadow-md);
}
.card:hover .card-link{gap:10px}
.card:hover .card-art img{transform:scale(1.05)}
.card-art img{transition:transform .5s cubic-bezier(.2,.7,.2,1)}
/* 卡片状态变化只靠边框色 + 顶部揭示线。 */
.card-art{aspect-ratio:16/9;flex:0 0 auto;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.card-art img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
/* ---------- 占位色块 ----------
   纯灰阶 + 三种机械纹理（半调网点 / 滚花斜纹 / 蓝图网格）。
   全站无彩色，层级只靠明度。 */
.art-a{background:#E8E8E5}
.art-b{background:#DEDEDA}
.art-c{background:#141414}
.art-d{background:#EDEDEA}
.art-e{background:#D4D4D0}
.art-f{background:#E2E2DE}
.art-g{background:#1E1E1E}
.art-h{background:#C9C9C4}
/* 半调网点：像丝网印刷的网屏 */
.art-a,.art-d,.art-f{
  background-image:radial-gradient(rgba(20,20,20,.16) 1px,transparent 1px);
  background-size:9px 9px;
}
/* 斜向机械纹：像滚花金属板 */
.art-b,.art-e,.art-h{
  background-image:repeating-linear-gradient(45deg,rgba(20,20,20,.10) 0 1px,transparent 1px 7px);
}
/* 深色块：反向网格，像蓝图底片 */
.art-c,.art-g{
  background-image:
    linear-gradient(to right,rgba(237,237,235,.10) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(237,237,235,.10) 1px,transparent 1px);
  background-size:22px 22px;
}
/* 暗色主题：整体压深，纹理换成亮色描线 */
html[data-theme="dark"] .art-a{background:#1C1C1C}
html[data-theme="dark"] .art-b{background:#212121}
html[data-theme="dark"] .art-c{background:#EDEDEB}
html[data-theme="dark"] .art-d{background:#191919}
html[data-theme="dark"] .art-e{background:#262626}
html[data-theme="dark"] .art-f{background:#1F1F1F}
html[data-theme="dark"] .art-g{background:#2B2B2B}
html[data-theme="dark"] .art-h{background:#151515}
html[data-theme="dark"] .art-a,
html[data-theme="dark"] .art-d,
html[data-theme="dark"] .art-f{background-image:radial-gradient(rgba(237,237,235,.14) 1px,transparent 1px);background-size:9px 9px}
html[data-theme="dark"] .art-b,
html[data-theme="dark"] .art-e,
html[data-theme="dark"] .art-h{background-image:repeating-linear-gradient(45deg,rgba(237,237,235,.09) 0 1px,transparent 1px 7px)}
html[data-theme="dark"] .art-c{background-image:linear-gradient(to right,rgba(20,20,20,.12) 1px,transparent 1px),linear-gradient(to bottom,rgba(20,20,20,.12) 1px,transparent 1px);background-size:22px 22px}
html[data-theme="dark"] .art-g{background-image:linear-gradient(to right,rgba(237,237,235,.10) 1px,transparent 1px),linear-gradient(to bottom,rgba(237,237,235,.10) 1px,transparent 1px);background-size:22px 22px}

.card-body{padding:26px 28px 30px;flex:1;display:flex;flex-direction:column}
.card-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px;min-height:24px;align-items:flex-start}
.card-date{
  font-family:var(--mono);font-size:.68rem;letter-spacing:.16em;
  color:var(--muted);margin-top:16px;
}
.card-body h3{
  font-size:1.26rem;font-weight:600;margin-bottom:7px;line-height:1.3;
  transition:color .2s ease;
  /* 标题最多 2 行，保证每行卡片高度一致；不想截断就删掉下面 4 行 */
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-body p{
  color:var(--muted);font-size:.9rem;flex:1;line-height:1.65;
  /* 摘要最多 3 行 */
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card-link{display:inline-flex;align-self:flex-start;align-items:center;gap:8px;margin-top:20px;font-family:var(--mono);font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;font-weight:500;color:var(--primary)}
/* 首页 + Work 页项目描述都限两行，超出省略号 */
#featured .card-body p,
.work-grid .card-body p{-webkit-line-clamp:2}
.card-link:hover{gap:10px;transition:gap .2s}

/* ---------- tabs：分段控制器（segmented control） ---------- */
/* 整体是一个带浅灰底的胶囊容器，内部选项等分；
   选中项是一个白色滑块。默认态文字用 --text 而不是 --muted，
   保证"看起来可点"。 */
.tab-bar{
  position:relative;
  display:inline-flex;gap:0;margin-bottom:20px;
  padding:0;border-radius:0;
  background:transparent;
  border:var(--rule) solid var(--line-strong);
  box-shadow:none;
  flex-wrap:nowrap;overflow-x:auto;max-width:100%;
  -webkit-overflow-scrolling:touch;scrollbar-width:none;
  vertical-align:middle;
}
.tab-bar::-webkit-scrollbar{display:none}
/* 吸顶筛选条容器：滚动到顶部时固定（work / blog 页） */
.tab-sticky{
  position:sticky;top:var(--nav-h);z-index:45;
  margin:0 calc(-1 * var(--wrap-pad)) 40px;padding:12px var(--wrap-pad) 10px;
  background:var(--nav-bg);
  backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);
  border-bottom:var(--rule) solid transparent;
  transition:border-color .3s ease,box-shadow .3s ease;
}
.tab-sticky.stuck{border-bottom-color:var(--line);box-shadow:none}

/* 吸顶时 tab 在上下横线间垂直居中：不再给 .tab-bar 额外下边距 */
@media (max-width:640px){.tab-sticky{padding:10px var(--wrap-pad)}}
/* Blog 页：吸顶条通栏，tab 左缘对齐居中的 900px 列表 */
.tab-bar.narrow{margin-left:max(0px,calc((100% - 900px) / 2));margin-right:auto}

.tab-btn{
  position:relative;z-index:1;flex:1 0 auto;
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:11px 22px;border:0;border-radius:0;background:transparent;
  color:var(--muted);cursor:pointer;
  font-family:var(--mono);font-size:.68rem;font-weight:500;
  letter-spacing:.15em;text-transform:uppercase;
  white-space:nowrap;
  transition:color .25s ease;
}
/* 分段之间画竖线，像仪表盘的挡位 */
.tab-btn + .tab-btn::before{
  content:"";position:absolute;left:0;top:22%;bottom:22%;width:1px;background:var(--line);
}
/* 分段之间不再画分隔线，柔和胶囊容器自带边界 */
.tab-btn:hover{color:var(--text)}
.tab-btn.active{color:var(--on-primary)}
.tab-btn:focus-visible{outline:3px solid var(--primary);outline-offset:1px;border-radius:var(--radius-sm)}
/* 数量角标 */
.tab-n{
  font-family:var(--mono);font-size:.62rem;line-height:1;padding:2px 5px;border-radius:0;
  background:transparent;color:var(--muted);transition:color .25s;
}

.tab-btn.active .tab-n{background:transparent;color:var(--on-primary);opacity:.6}
/* 白色滑块 */
/* 滑块：白色（暗色下是浅灰卡），像 iOS 分段控件 */
.tab-ind{
  position:absolute;top:0;bottom:0;left:0;z-index:0;pointer-events:none;
  border-radius:0;background:var(--primary);opacity:0;
  box-shadow:none;
  transition:transform .34s cubic-bezier(.32,.72,0,1),width .34s cubic-bezier(.32,.72,0,1),opacity .25s ease;
}
html[data-theme="dark"] .tab-ind{background:var(--primary);box-shadow:none}
.tab-item{transition:opacity .3s ease,transform .3s ease}
.fade-in{animation:cardIn .4s ease}
@keyframes cardIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

/* ---------- blog list ---------- */
/* 与 Work / Gallery 同一套语言：编号 + 巨大标题 + 悬停整行推进 */
.blog-list{max-width:900px;margin:0 auto}
.post{
  position:relative;display:grid;grid-template-columns:56px 96px 1fr auto;gap:22px;align-items:center;
  border-bottom:var(--rule) solid var(--line);
  padding:30px 18px;
  border-radius:var(--radius-sm);
  overflow:hidden;isolation:isolate;
  transition:transform .32s cubic-bezier(.2,.7,.2,1),box-shadow .32s ease;
}
/* 悬停：墨色从左侧扫入铺满整行，文字反白，整行上浮突出（不横向跳跃） */
/* 极简：hover 只铺一层极淡的底，不做墨色反白 */
.post::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:var(--bg-soft);
  opacity:0;
  transition:opacity .22s ease;
}
.post:hover::before{opacity:1}
.post{border-left:3px solid transparent;transition:transform .3s cubic-bezier(.2,.7,.2,1),border-color .22s ease}
.post:hover{
  transform:none;
  border-left-color:var(--primary);
  box-shadow:none;
  z-index:2;
}
.post:hover .p-idx,
.post:hover .date{color:var(--muted)}
.post:hover p{color:var(--muted)}
.post:hover h3{color:var(--text)}
.post:hover .date .cat{color:var(--primary)}

.post .p-idx{
  font-family:var(--mono);font-size:.78rem;color:var(--muted);letter-spacing:.06em;
  transition:color .22s ease .14s;
}
.post:hover .p-idx{color:var(--muted)}

.post .p-main{min-width:0}
.post .date{
  font-family:var(--mono);font-size:.7rem;color:var(--muted);
  letter-spacing:.16em;text-transform:uppercase;
  transition:color .22s ease .14s,opacity .22s ease .14s;
}
.post .date .cat{color:var(--primary);font-weight:600}
.post h3{
  font-size:clamp(1.32rem,2.6vw,1.72rem);font-weight:600;margin:9px 0 7px;line-height:1.26;
  transition:transform .4s cubic-bezier(.2,.7,.2,1),color .22s ease .14s;
}
.post p{
  color:var(--muted);font-size:.92rem;line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .22s ease .14s,opacity .22s ease .14s;
}
/* 右侧圆形箭头，取代文字 Read more */
.post .p-go{
  flex:0 0 auto;width:38px;height:38px;border-radius:0;
  border:var(--rule) solid var(--line-strong);background:transparent;
  display:flex;align-items:center;justify-content:center;color:var(--muted);
  font-size:1.05rem;
  transition:background .3s,color .3s,border-color .3s,transform .4s cubic-bezier(.2,.7,.2,1);
}
.post:hover .p-go{
  background:var(--primary);border-color:transparent;color:var(--on-primary);
  transform:translateX(3px);
}
@media (max-width:640px){
  .post{grid-template-columns:96px 1fr auto;gap:14px;padding:24px 12px}
}

/* ---------- 首页 Blog 预览：沿用 Blog 页的行式语言 ---------- */
.post-grid{max-width:none}
.post-card{
  position:relative;display:grid;grid-template-columns:56px 96px 1fr auto;gap:22px;align-items:center;
  border-bottom:var(--rule) solid var(--line);
  padding:28px 18px;
  border-radius:var(--radius-sm);
  overflow:hidden;isolation:isolate;
  transition:transform .32s cubic-bezier(.2,.7,.2,1),box-shadow .32s ease;
}
/* 极简：hover 只铺一层极淡的底，不做墨色反白 */
.post-card::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:var(--bg-soft);
  opacity:0;
  transition:opacity .22s ease;
}
.post-card:hover::before{opacity:1}
.post-card{border-left:3px solid transparent;transition:transform .3s cubic-bezier(.2,.7,.2,1),border-color .22s ease}
.post-card:hover{
  transform:none;
  border-left-color:var(--primary);
  box-shadow:none;
  z-index:2;
}
.post-card:hover .idx,
.post-card:hover .meta{color:var(--muted)}
.post-card:hover p{color:var(--muted)}
.post-card:hover h3{color:var(--text)}
.post-card:hover .meta .cat{color:var(--primary)}
.post-card .idx{
  font-family:var(--mono);font-size:.78rem;color:var(--muted);letter-spacing:.06em;
  transition:color .3s;
}
.post-card:hover .idx{color:var(--muted)}
.post-card .pc-main{min-width:0}
.post-card .meta{
  display:flex;align-items:center;gap:9px;font-family:var(--mono);font-size:.7rem;
  color:var(--muted);text-transform:uppercase;letter-spacing:.16em;
  transition:color .22s ease .14s,opacity .22s ease .14s;
}
.post-card .meta .cat{color:var(--primary);font-weight:600}
.post-card h3{
  font-size:clamp(1.26rem,2.4vw,1.6rem);font-weight:600;margin:9px 0 7px;line-height:1.28;
  transition:color .22s ease .14s;
}
.post-card p{
  color:var(--muted);font-size:.91rem;line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .22s ease .14s,opacity .22s ease .14s;
}
.post-card .more{
  flex:0 0 auto;width:38px;height:38px;border-radius:0;
  border:var(--rule) solid var(--line-strong);background:transparent;
  display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:1.05rem;
  transition:background .3s,color .3s,border-color .3s,transform .4s cubic-bezier(.2,.7,.2,1);
}
.post-card:hover .more{
  background:var(--primary);border-color:transparent;color:var(--on-primary);
  transform:translateX(3px);
}
@media (max-width:640px){
  .post-card{grid-template-columns:96px 1fr auto;gap:14px;padding:22px 12px}
}

/* 文章封面缩略图（Blog 列表 & 首页预览）：带轻微倾斜，hover 回正 */
.p-cover{
  flex:0 0 auto;width:96px;height:64px;border-radius:var(--radius-sm);overflow:hidden;
  position:relative;background:var(--card-2);border:var(--rule) solid var(--line);
  box-shadow:none;
}
.p-cover > *{width:100%;height:100%;object-fit:cover;display:block}

.post .p-cover,.post-card .p-cover{
  transform:none;
}
.post:hover .p-cover,.post-card:hover .p-cover{transform:translateY(-2px)}
@media (max-width:560px){.p-cover{width:84px;height:56px}}

/* ---------- gallery 开场：满屏影像墙，文案居中叠放 ----------
   高度 = 100dvh（铺满首屏），点 Browse all 滑到下一屏的瀑布流。
   结构：.gal-bg（三条影像条，行高平分视口，绝对定位铺满）
        → .gal-veil（渐变蒙版，保证文字可读）
        → .strip-head（居中文案，z-index 最高）
   素材只 6 张，三条错开顺序复用，浏览器实际只解码 6 张图。
   ------------------------------------------------------------ */
.gal-hero{
  position:relative;overflow:hidden;
  /* 首屏铺满整个视口。dvh 优先：移动端浏览器地址栏收起/展开时不会跳动，
     不支持 dvh 的老浏览器回落到 vh。 */
  min-height:100vh;
  min-height:100dvh;
  padding-top:var(--nav-h);   /* 给悬浮导航框留位 */
  display:flex;align-items:center;justify-content:center;
}

/* 背景层：整体轻微倾斜 + 放大，滚动时更有纵深 */
.gal-bg{
  position:absolute;inset:0;z-index:0;
  display:flex;flex-direction:column;gap:20px;
  transform:scale(1.12) rotate(-3deg);
  transform-origin:center;
  /* 上下也做渐隐，和页面背景无缝衔接 */
  -webkit-mask-image:linear-gradient(180deg,transparent,#000 9%,#000 91%,transparent);
          mask-image:linear-gradient(180deg,transparent,#000 9%,#000 91%,transparent);
  /* 轻微提饱和 + 对比，避免叠了蒙版之后整屏发灰 */
  filter:saturate(1.06) contrast(1.04);
}
/* 三行平分 hero 高度。瓦片改成「高度驱动」——高度吃满行高、宽度由
   aspect-ratio 推导，所以不管视口多高（1080 还是 4K 的 2160）都刚好铺满，
   不会像固定宽度那样在高分屏上露出底色。 */
.gal-bg .strip-row{flex:1 1 0;min-height:0}
.gal-bg .strip{height:100%;align-items:stretch}
.gal-bg .strip-tile{
  height:100%;width:auto;
  aspect-ratio:4/3;
  box-shadow:none;          /* 背景要安静，不做浮起的卡片感 */
  transition:none;
}
.gal-bg .strip-tile.tall{aspect-ratio:3/4}
.gal-bg .strip-tile:hover{transform:none}      /* 背景不响应悬停 */
.gal-bg .st-lbl{display:none}                  /* 背景不显示标题 */
.gal-bg .strip-row:hover .strip{animation-play-state:running}  /* 背景不因悬停暂停 */

/* 三条速度全部错开（1、3 同向靠时长区分），避免整屏同步平移的呆板感 */
.gal-hero .strip-row:nth-child(1) .strip{animation-duration:82s}
.gal-hero .strip-row:nth-child(2) .strip{animation-duration:64s}
.gal-hero .strip-row:nth-child(3) .strip{animation-duration:96s}

/* 蒙版：中心更实、边缘更透，文字落在最实的地方 */
/* 蒙版：只在正中间收一小团（文字落点），范围之外迅速变透明，
   所以四周的照片是清清楚楚的原样，不再整屏被刷白。 */
.gal-veil{
  position:absolute;inset:0;z-index:1;pointer-events:none;
  background:
    radial-gradient(64% 46% at 50% 47%,
      rgba(246,241,231,.90) 0%,
      rgba(246,241,231,.62) 46%,
      rgba(246,241,231,.20) 74%,
      rgba(246,241,231,0) 100%),
    linear-gradient(180deg,var(--hero-bg) 0%,transparent 14%,transparent 86%,var(--bg) 100%);
}
html[data-theme="dark"] .gal-veil{
  background:
    radial-gradient(64% 46% at 50% 47%,
      rgba(15,15,15,.90) 0%,
      rgba(15,15,15,.62) 46%,
      rgba(15,15,15,.20) 74%,
      rgba(15,15,15,0) 100%),
    linear-gradient(180deg,var(--hero-bg) 0%,transparent 14%,transparent 86%,var(--bg) 100%);
}

/* 前景文案：居中 */
.gal-hero .strip-head{
  position:relative;z-index:2;
  text-align:center;padding:0;width:100%;
}
.gal-hero .strip-head h1{
  margin:0 auto 18px;max-width:16ch;
  font-size:clamp(2.5rem,6.6vw,5rem);
  /* 蒙版变淡后，靠文字自身的柔光把它从照片里"托"出来 */
  text-shadow:0 2px 24px var(--hero-bg),0 1px 4px var(--hero-bg);
}
.gal-hero .strip-head .sub{
  margin:0 auto;max-width:46ch;
  color:var(--text);
  text-shadow:0 1px 14px var(--hero-bg),0 1px 3px var(--hero-bg);
}

/* 满屏后 Browse all 移到底部：既是明确的「往下看」指引，
   也避免和居中的标题挤在一起。 */
.gal-hero .stack-cue{
  position:absolute;left:50%;bottom:clamp(28px,5vh,56px);
  transform:translateX(-50%);
  z-index:3;margin-top:0;opacity:0;
  /* 先淡入（cueIn），再无限缓慢浮动（cueFloat）。
     这里不能复用 .fade-up —— 它的 to{transform:none} 会把 translateX(-50%)
     一起清掉，按钮会从中心跳到右边。 */
  animation:cueIn .8s cubic-bezier(.16,.84,.24,1) .8s forwards,
            cueFloat 2.6s ease-in-out 1.8s infinite;
}
.gal-hero .stack-cue:hover{
  transform:translateX(-50%) translateY(-3px);
  animation-play-state:paused,paused;
}
@keyframes cueIn{
  from{opacity:0;transform:translateX(-50%) translateY(16px)}
  to  {opacity:1;transform:translateX(-50%) translateY(0)}
}
/* 缓慢上下浮动，暗示可以往下滚 */
@keyframes cueFloat{
  0%,100%{opacity:1;transform:translateX(-50%) translateY(0)}
  50%    {opacity:1;transform:translateX(-50%) translateY(7px)}
}
@media (max-width:760px){
  .gal-hero .stack-cue{bottom:clamp(22px,4vh,40px)}
}
@media (prefers-reduced-motion:reduce){
  .gal-hero .stack-cue{animation:none;opacity:1}
}

@media (max-width:760px){
  /* 移动端同样满屏，dvh 避免地址栏导致的高度跳动 */
  .gal-hero{min-height:100vh;min-height:100dvh}
  .gal-bg{transform:scale(1.22) rotate(-4deg);gap:12px}
  /* 窄屏文字占比大，蒙版中心收得实一点，保证标题可读 */
  .gal-veil{
    background:
      radial-gradient(88% 52% at 50% 46%,
        rgba(246,241,231,.94) 0%,
        rgba(246,241,231,.72) 48%,
        rgba(246,241,231,.24) 78%,
        rgba(246,241,231,0) 100%),
      linear-gradient(180deg,var(--hero-bg) 0%,transparent 14%,transparent 86%,var(--bg) 100%);
  }
  html[data-theme="dark"] .gal-veil{
    background:
      radial-gradient(88% 52% at 50% 46%,
        rgba(15,15,15,.94) 0%,
        rgba(15,15,15,.72) 48%,
        rgba(15,15,15,.24) 78%,
        rgba(15,15,15,0) 100%),
      linear-gradient(180deg,var(--hero-bg) 0%,transparent 14%,transparent 86%,var(--bg) 100%);
  }
}
/* 底部渐隐交给 .gal-veil，关掉 .strip-hero 自带的那层，避免叠两次 */
.gal-hero::after{display:none}
@media (prefers-reduced-motion:reduce){
  .gal-hero .strip.left,.gal-hero .strip.right{animation:none}
}

/* 骨架屏在滚动瓦片里也要占好位 */
.strip-tile .skel{border-radius:inherit}

html[data-theme="dark"] .stack-cue{box-shadow:none}
/* 「Browse all」下滑提示 */
.stack-cue{
  display:inline-flex;align-items:center;gap:9px;margin-top:30px;
  padding:13px 24px;border-radius:var(--radius-sm);
  background:var(--primary);color:var(--on-primary);text-decoration:none;
  font-size:.9rem;font-weight:600;letter-spacing:.03em;text-transform:uppercase;
  border:var(--rule) solid var(--line);box-shadow:var(--shadow-sm);
  transition:transform .15s ease,box-shadow .15s ease;
}
.stack-cue:hover{transform:translate(-2px,-2px);box-shadow:var(--shadow-md)}
.stack-cue:active{transform:translate(1px,1px);box-shadow:var(--shadow-sm)}
.stack-cue svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.stack-cue:hover svg{animation:cueBob 1.1s ease-in-out infinite}
@keyframes cueBob{0%,100%{transform:translateY(0)}50%{transform:translateY(3px)}}
@media (prefers-reduced-motion:reduce){
  .stack-cue:hover svg{animation:none}
  .stack-cue:hover{transform:none}
}

/* 筛选条：吸顶 */
.g-filter{
  position:sticky;top:var(--nav-h);z-index:40;
  scroll-margin-top:var(--nav-h);
  background:var(--nav-bg);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);
}
.g-filter-inner{display:flex;align-items:center;justify-content:flex-end;gap:18px;height:60px;overflow-x:auto}
.g-filter .g-count{font-family:var(--mono);font-size:.72rem;color:var(--muted);letter-spacing:.16em;white-space:nowrap}

/* 密集瀑布流 */
.masonry{columns:3;column-gap:14px;column-fill:balance}
.masonry .m-item{
  break-inside:avoid;margin:0 0 14px;border-radius:var(--radius-sm);overflow:hidden;position:relative;cursor:pointer;
  background:var(--bg-soft);
  transition:transform .35s cubic-bezier(.2,.7,.2,1),box-shadow .35s;
}
/* Pinterest 风：默认整页全亮，不压暗任何图片；
   hover 只在当前图片上做极轻的抬升 + 一层淡渐变叠加 */
/* hover 保持 Pinterest 式的克制：只在当前图上做 1px 中性描边 + 底部渐变图注浮现 */
.masonry .m-item:hover{
  transform:translateY(-4px);
  box-shadow:0 14px 34px rgba(20,20,28,.16);
  z-index:2;
}
html[data-theme="dark"] .masonry .m-item:hover{box-shadow:0 14px 34px rgba(0,0,0,.55)}


.masonry .m-item .m-frame{position:relative;width:100%;overflow:hidden;background:var(--card-2);line-height:0}
.masonry .m-item .m-frame.has-media{aspect-ratio:var(--ar,4/5)}
/* 顶端对齐修复：
   1) 瀑布流项只做淡入，不做 Y 位移 —— 否则未入场的项会低 24px，顶端看起来没对齐
   2) 每列第一项去掉上边距，且 break-inside 保证不跨列断裂 */
.masonry .m-item.reveal{transform:none}
.masonry .m-item.reveal.visible{transform:none}
.masonry > .m-item:first-child{margin-top:0}
.masonry .m-item .m-frame img{
  position:static;width:100%;height:auto;display:block;object-fit:contain;
  transition:transform .7s cubic-bezier(.2,.7,.2,1);
}
/* 图片未到位时，用 --ar 预留高度让骨架屏有尺寸；
   图片一旦 loaded，交回图片自身的自然高度（真实比例优先） */
.masonry .m-item .m-frame.ready{aspect-ratio:auto}
.masonry .m-item .m-frame img.pending{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
}
.masonry .m-item:hover .m-frame img{transform:scale(1.03)}
.masonry .m-item .m-frame.has-video{aspect-ratio:auto}
/* 视频帧由 JS 加 .has-video，高度交给视频自然高度 */
.masonry .m-frame video{width:100%;height:auto;display:block}

/* 视频角标 */
.m-badge{
  position:absolute;left:10px;top:10px;z-index:3;
  display:flex;align-items:center;gap:5px;padding:4px 9px;border-radius:var(--radius-sm);
  background:rgba(14,14,13,.70);backdrop-filter:blur(8px);
  color:#fff;font-family:var(--mono);font-size:.62rem;letter-spacing:.16em;text-transform:uppercase;
}
.m-badge svg{width:9px;height:9px;fill:currentColor}

/* 比例辅助类（仅占位块需要） */
.r-square{aspect-ratio:1/1}
.r-portrait{aspect-ratio:3/4}
.r-tall{aspect-ratio:2/3}
.r-landscape{aspect-ratio:4/3}
.r-wide{aspect-ratio:16/9}

.m-ph{position:absolute;inset:0;display:flex;align-items:flex-end;padding:12px}
.m-ph .ph-label{font-size:.74rem;font-weight:600;color:rgba(18,18,18,.45)}
html[data-theme="dark"] .m-ph{filter:brightness(.45) saturate(1.1)}

/* 图注：整块渐变浮起 */
.m-cap{
  position:absolute;inset:0;z-index:2;display:flex;flex-direction:column;justify-content:flex-end;
  padding:16px 16px 15px;
  /* 只在底部叠一点点暗，上方几乎透明 —— 图片本身保持明亮 */
  background:linear-gradient(transparent 58%,rgba(14,14,13,.46));
  color:#fff;opacity:0;transition:opacity .3s ease;
}
.m-cap .t{font-size:.9rem;font-weight:600;letter-spacing:-.01em;transform:translateY(8px);transition:transform .4s cubic-bezier(.2,.7,.2,1)}
.m-cap .s{font-size:.76rem;color:rgba(255,255,255,.68);margin-top:3px;transform:translateY(8px);transition:transform .4s cubic-bezier(.2,.7,.2,1) .04s}
.m-item:hover .m-cap{opacity:1}
.m-item:hover .m-cap .t,.m-item:hover .m-cap .s{transform:none}

@media (max-width:900px){.masonry{columns:2}}
@media (max-width:560px){
  .masonry{columns:1}
  .m-cap{opacity:1;background:linear-gradient(transparent 62%,rgba(14,14,13,.52))}
  .m-cap .t,.m-cap .s{transform:none}
}


/* ---------- work — 横向滑动作品条 hero ---------- */
.strip-hero{
  position:relative;padding:140px 0 0;overflow:hidden;background:var(--hero-bg);
}
.strip-hero .strip-head{position:relative;z-index:2;text-align:left;padding-bottom:52px}
.strip-hero h1{font-size:clamp(2.6rem,7vw,5.4rem);margin:0 0 18px;max-width:20ch}
.strip-hero .sub{max-width:52ch;margin:0;color:var(--muted);font-size:1.04rem;line-height:1.6}

/* 两条反向滚动的作品条 */
.strip{
  display:flex;gap:18px;width:max-content;padding-bottom:18px;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);
          mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);
}
.strip-row{overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent)}
.strip.left {animation:stripL 46s linear infinite}
.strip.right{animation:stripR 54s linear infinite}
.strip-row:hover .strip{animation-play-state:paused}
@keyframes stripL{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@keyframes stripR{from{transform:translateX(-50%)}to{transform:translateX(0)}}
.strip-tile{
  flex:0 0 auto;width:clamp(210px,21vw,320px);aspect-ratio:4/3;
  border-radius:var(--radius-sm);overflow:hidden;position:relative;
  box-shadow:none;border:var(--rule) solid var(--line);
  transition:transform .4s cubic-bezier(.2,.7,.2,1),border-color .3s ease;
}
html[data-theme="dark"] .strip-tile{box-shadow:none}
.strip-tile:hover{transform:translateY(-6px);border-color:var(--line-strong);z-index:3}
.strip-tile img,.strip-tile > div{width:100%;height:100%;object-fit:cover;display:block}
.strip-tile .st-lbl{
  position:absolute;left:0;right:0;bottom:0;padding:26px 16px 13px;
  background:linear-gradient(transparent,rgba(14,14,13,.74));
  color:#fff;font-size:.8rem;font-weight:600;
  opacity:0;transform:translateY(6px);transition:opacity .3s,transform .3s;
}
.strip-tile:hover .st-lbl{opacity:1;transform:none}
.strip-tile.tall{aspect-ratio:3/4;width:clamp(170px,16vw,240px)}
/* 大屏：放开卡片宽度上限。
   之前 width 被 clamp 封在 320px，12 张的「半程」总宽约 2028px；
   2560/3840 视口比它还宽，translateX(-50%) 走完后右侧出现大片空白，
   看起来就是「4K 上没有滚动特效」。 */
@media (min-width:1900px){
  .strip-tile{width:clamp(320px,20vw,430px)}
  .strip-tile.tall{width:clamp(240px,15vw,330px)}
}
@media (min-width:2400px){
  .strip-tile{width:clamp(400px,19vw,540px)}
  .strip-tile.tall{width:clamp(300px,14vw,410px)}
}
@media (min-width:3200px){
  .strip-tile{width:clamp(560px,19vw,760px)}
  .strip-tile.tall{width:clamp(430px,14vw,580px)}
}
/* 底部渐隐衔接 */
.strip-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:90px;z-index:1;pointer-events:none;
  background:linear-gradient(transparent,var(--bg));
}
@media (max-width:760px){
  .strip-hero{padding-top:118px}
  .strip-hero .strip-head{padding-bottom:36px}
  .strip-tile{width:62vw}
  .strip-tile.tall{width:48vw}
}
@media (prefers-reduced-motion:reduce){
  .strip.left,.strip.right{animation:none}
}

/* ---- gallery 首屏覆盖（必须晚于 .strip-hero，否则左对齐会盖掉居中） ---- */
.gal-hero .strip-head{text-align:center}
.gal-hero .strip-head .sub{text-align:center}

/* ---------- immersive viewer (lightbox) ---------- */
.lightbox{
  position:fixed;inset:0;z-index:400;display:none;
  background:#131313;
  opacity:0;transition:opacity .3s ease;
}
.lightbox.open{display:block;opacity:1}
.lightbox .lb-stage{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  padding:86px 96px 108px;
}
.lightbox .lb-inner{
  max-width:100%;max-height:100%;display:flex;align-items:center;justify-content:center;
  opacity:0;transform:scale(.965);
  transition:opacity .45s cubic-bezier(.2,.7,.2,1),transform .45s cubic-bezier(.2,.7,.2,1);
}
.lightbox.ready .lb-inner{opacity:1;transform:none}
.lightbox .lb-inner img,
.lightbox .lb-inner video{
  max-width:100%;max-height:calc(100vh - 194px);
  width:auto;height:auto;object-fit:contain;display:block;
  box-shadow:none;border-radius:0;
}
.lightbox .lb-ph{width:min(900px,80vw);aspect-ratio:16/10;border-radius:var(--radius-sm)}
.lightbox .lb-ph.r-square{aspect-ratio:1/1;width:min(680px,72vw)}
.lightbox .lb-ph.r-portrait{aspect-ratio:3/4;width:min(600px,66vw)}
.lightbox .lb-ph.r-tall{aspect-ratio:2/3;width:min(540px,62vw)}
.lightbox .lb-ph.r-landscape{aspect-ratio:4/3;width:min(880px,80vw)}
.lightbox .lb-ph.r-wide{aspect-ratio:16/9;width:min(1100px,86vw)}

/* 顶部信息条 */
.lightbox .lb-top{
  position:absolute;top:0;left:0;right:0;z-index:5;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 26px;color:#fff;
  background:linear-gradient(rgba(11,11,10,.78),transparent);
}
.lightbox .lb-idx{font-family:var(--mono);font-size:.74rem;letter-spacing:.16em;color:rgba(255,255,255,.62)}
.lightbox .lb-idx b{color:#fff}
.lightbox .lb-tools{display:flex;gap:10px}
.lb-btn{
  width:36px;height:36px;border-radius:var(--radius);border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.08);color:#fff;cursor:pointer;
  display:flex;align-items:center;justify-content:center;font-size:1rem;
  transition:background .2s,border-color .2s,transform .2s;
}
.lb-btn:hover{background:rgba(255,255,255,.2);border-color:rgba(255,255,255,.42);transform:scale(1.06)}
.lb-btn svg{width:15px;height:15px;fill:currentColor}

/* 底部说明 */
.lightbox .lb-cap{
  position:absolute;bottom:0;left:0;right:0;z-index:5;
  padding:26px 26px 30px;color:#fff;text-align:center;
  background:linear-gradient(transparent,rgba(11,11,10,.82));
}
.lightbox .lb-cap .t{font-size:1.02rem;font-weight:600;letter-spacing:-.01em}
.lightbox .lb-cap .s{font-size:.85rem;color:rgba(255,255,255,.62);margin-top:5px}

/* 左右翻页 */
.lb-nav{
  position:absolute;top:50%;transform:translateY(-50%);z-index:6;
  width:50px;height:50px;border-radius:var(--radius);border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.07);backdrop-filter:blur(10px);
  color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.3rem;
  transition:background .2s,transform .2s,opacity .2s;
}
.lb-nav:hover{background:rgba(255,255,255,.2);transform:translateY(-50%) scale(1.08)}
.lb-nav.prev{left:22px}
.lb-nav.next{right:22px}
.lb-nav[disabled]{opacity:.22;cursor:default}
.lb-nav[disabled]:hover{background:rgba(255,255,255,.07);transform:translateY(-50%)}

/* 底部缩略图胶片条 */
.lb-film{
  position:absolute;left:0;right:0;bottom:0;z-index:7;
  display:flex;gap:6px;padding:12px 16px;overflow-x:auto;
  background:rgba(11,11,10,.74);backdrop-filter:blur(14px);
  transform:translateY(100%);transition:transform .35s cubic-bezier(.2,.7,.2,1);
  scrollbar-width:none;
}
.lb-film::-webkit-scrollbar{display:none}
.lightbox.film .lb-film{transform:none}
.lightbox.film .lb-cap{opacity:0;pointer-events:none;transition:opacity .2s}
.lightbox.film .lb-stage{padding-bottom:112px}
.lb-thumb{
  flex:0 0 auto;width:52px;height:38px;border-radius:var(--radius-sm);overflow:hidden;cursor:pointer;
  opacity:.38;border:1.5px solid transparent;
  transition:opacity .2s,border-color .2s,transform .2s;
}
.lb-thumb:hover{transform:translateY(-2px);opacity:.8}
.lb-thumb img{width:100%;height:100%;object-fit:cover}
.lb-thumb.on{opacity:1;border-color:#fff}

@media (max-width:700px){
  .lightbox .lb-stage{padding:74px 16px 96px}
  .lb-nav{width:44px;height:44px}
  .lb-nav.prev{left:8px}.lb-nav.next{right:8px}
  .lightbox .lb-inner img,.lightbox .lb-inner video{max-height:calc(100vh - 176px)}
}

/* ---------- about ---------- */
/* About 页统一 12 栏网格：三个区块共用同一组栏线，
   所有模块的左边界、右边界、中缝都精确对齐。 */
.about-grid,
.skill-grid,
.contact-wrap{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:38px 32px;
  align-items:start;
}
/* 1/3 + 2/3：侧卡 4 栏，正文 8 栏（中缝落在第 5 条栏线） */
.portrait{grid-column:1 / span 4;min-width:0}
.about-text{grid-column:5 / span 8;min-width:0}
/* 技能卡 4 张，各占 3 栏 —— 整行仍然是 12 栏，外缘和上下段齐平 */
.skill-card{grid-column:span 3;min-width:0}
/* Contact 沿用和 About 完全相同的 4 + 8，两段中缝上下贯通 */
.contact-wrap > .contact-card:first-child{grid-column:1 / span 4}
.contact-wrap > .contact-card:last-child{grid-column:5 / span 8}

.portrait{
  padding:26px 24px;border-radius:var(--radius);
  background:var(--card);border:var(--rule) solid var(--line);
  text-align:left;box-shadow:var(--shadow-sm);
}
.avatar{
  width:96px;height:96px;margin:0 0 18px;border-radius:var(--radius);
  background:var(--primary);display:flex;align-items:center;justify-content:center;
  font-size:2.4rem;font-weight:600;line-height:1;
  color:var(--on-primary);border:var(--rule) solid var(--line);box-shadow:var(--shadow-md);
}
.portrait h3{font-size:1.35rem;font-weight:600;letter-spacing:-.01em}
.portrait .role{
  color:var(--muted);margin-top:8px;
  font-family:var(--mono);font-size:.64rem;letter-spacing:.16em;text-transform:uppercase;line-height:1.9;
}
.portrait .social{display:flex;justify-content:flex-start;gap:8px;margin-top:20px}
.portrait .social a{
  width:36px;height:36px;border-radius:var(--radius-sm);border:var(--rule) solid var(--line);background:var(--card);
  display:flex;align-items:center;justify-content:center;
  font-size:.72rem;font-weight:600;text-transform:uppercase;
  color:var(--muted);transition:background .2s,color .2s,border-color .2s;
}
.portrait .social a:hover{background:var(--primary);color:var(--on-primary);border-color:var(--primary)}
.about-text p{color:var(--muted);margin-bottom:18px;font-size:1rem;line-height:1.75}
/* 导语：加粗大字，开篇点题 */
.about-text .lead{
  font-size:clamp(1.45rem,2.6vw,1.95rem);line-height:1.3;letter-spacing:-.015em;
  font-weight:600;color:var(--text);margin-bottom:26px;
  max-width:30ch;
}
.about-text .hl{
  color:var(--text);font-weight:600;
  background:var(--primary-soft);padding:0 4px;border-radius:2px;
  box-decoration-break:clone;
}
.currently{
  margin-top:26px;padding:20px 22px;border-radius:var(--radius-sm);
  background:var(--card);color:var(--text);
  border:var(--rule) solid var(--line);box-shadow:var(--shadow-sm);
}
.currently .lbl{font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:var(--primary);margin-bottom:6px;font-weight:600}
.currently p{color:var(--text);font-size:.95rem;margin:0}

/* skills */
.skill-card{
  padding:26px;border-radius:0;background:var(--card);
  border:var(--rule) solid var(--line);box-shadow:none;
  transition:transform .3s cubic-bezier(.2,.7,.2,1),box-shadow .3s ease,border-color .3s ease;
}
.skill-card:hover{transform:translateY(-4px);border-color:var(--primary);box-shadow:none}
.skill-icon{
  font-family:var(--mono);font-size:.64rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--primary);margin-bottom:14px;
}
.skill-card h4{font-size:1.24rem;font-weight:600;margin-bottom:9px;letter-spacing:-.01em}
.skill-card p{color:var(--muted);font-size:.87rem}

/* ---------- contact ---------- */
.contact-wrap{margin-top:52px}
.contact-card{
  padding:28px;border-radius:0;background:var(--card);
  border:var(--rule) solid var(--line);box-shadow:none;
  align-self:stretch;                /* 左右两卡等高，不再一高一低 */
}
.contact-card h2{font-size:1.6rem;font-weight:600;margin-bottom:12px}
.contact-card p{color:var(--muted);font-size:.95rem;margin-bottom:22px}
.contact-lines{display:flex;flex-direction:column;gap:14px;margin-bottom:24px}
.contact-lines .line{display:flex;align-items:center;gap:12px;font-family:var(--mono);font-size:.78rem;letter-spacing:.04em}
.contact-lines .ic{
  width:26px;flex:0 0 26px;color:var(--primary);
  font-family:var(--mono);font-size:.8rem;font-weight:500;
}
.form{display:flex;flex-direction:column;gap:14px}
.form label{font-family:var(--mono);font-size:.62rem;letter-spacing:.16em;text-transform:uppercase;font-weight:500;color:var(--muted)}
.form input,.form textarea{
  width:100%;padding:13px 14px;border-radius:0;border:var(--rule) solid var(--line-strong);
  background:var(--bg-soft);color:var(--text);font-family:var(--font);font-size:.95rem;outline:none;transition:border-color .2s,box-shadow .2s;
}
.form input:focus,.form textarea:focus{border-color:var(--primary);box-shadow:inset 0 -2px 0 var(--primary)}
.form textarea{min-height:130px;resize:vertical}
.form .btn{align-self:flex-start;border:0}


/* ---------- article (post detail) ---------- */
.article{max-width:720px;padding-top:150px;padding-bottom:110px;position:relative}
.art-loading{color:var(--muted);padding:60px 0;text-align:center}
/* 返回：与全站圆形箭头语言一致（反向） */
.art-back{
  display:inline-flex;align-items:center;gap:12px;margin-bottom:34px;
  font-family:var(--mono);font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;
  font-weight:600;color:var(--primary);
}
.art-back::before{
  content:"\2190";width:32px;height:32px;border-radius:var(--radius);border:var(--rule) solid var(--primary);
  display:flex;align-items:center;justify-content:center;font-family:var(--font);font-size:1rem;
  transition:background .3s,color .3s,transform .35s cubic-bezier(.2,.7,.2,1);
}
.art-back:hover::before{background:var(--primary);color:var(--on-primary);transform:translateX(-3px)}
.art-meta{
  display:flex;align-items:center;gap:12px;font-family:var(--mono);font-size:.7rem;
  color:var(--muted);text-transform:uppercase;letter-spacing:.16em;margin-bottom:14px;
}
.art-meta .cat{color:var(--primary);font-weight:600}
.article h1{font-size:clamp(1.9rem,4.4vw,2.9rem);margin:0 0 18px;text-align:left;max-width:none}
.art-excerpt{font-size:1.08rem;color:var(--muted);margin-bottom:34px;padding-bottom:26px}
.art-cover{
  position:relative;width:100%;aspect-ratio:16/9;border-radius:var(--radius);overflow:hidden;
  background:var(--card-2);border:var(--rule) solid var(--line);margin:0 0 36px;
  box-shadow:none;
}
html[data-theme="dark"] .art-cover{box-shadow:none}
.art-cover > *{width:100%;height:100%;object-fit:cover;display:block}
.art-cover img{transition:transform .8s cubic-bezier(.2,.7,.2,1)}
.art-cover:hover img{transform:scale(1.04)}
.art-body{font-size:1.06rem;line-height:1.82}
/* 首段放大，像杂志的导语 */
.art-body > p:first-of-type{font-size:1.2rem;line-height:1.66;color:var(--text)}
.art-body h2{font-size:1.6rem;font-weight:600;margin:2em 0 .5em}
.art-body h3{font-size:1.28rem;font-weight:600;margin:1.7em 0 .45em}
.art-body p{margin:1.1em 0;color:var(--text)}
.art-body ul{margin:1.1em 0 1.1em 1.3em;color:var(--text)}
.art-body li{margin:.4em 0}
.art-body strong{font-weight:600}
.art-body code{font-family:var(--font);font-size:.9em;background:var(--bg-soft);border:var(--rule) solid var(--line);border-radius:4px;padding:2px 6px}
.art-nav{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:60px;padding-top:30px}
.art-nav a{
  display:block;padding:20px 22px;border-radius:var(--radius-sm);border:var(--rule) solid var(--line);
  background:var(--card);font-size:.95rem;font-weight:600;color:var(--text);max-width:none;
  transition:border-color .3s,transform .3s cubic-bezier(.2,.7,.2,1),background .3s;
}
.art-nav a:hover{transform:translateY(-3px);background:var(--bg-soft);box-shadow:var(--shadow-sm)}
.art-nav .lbl{display:block;font-family:var(--mono);font-size:.66rem;color:var(--primary);text-transform:uppercase;letter-spacing:.16em;margin-bottom:7px}
@media (max-width:560px){.art-nav{grid-template-columns:1fr}}

/* ---------- footer ---------- */
footer{padding:28px 0 42px;margin-top:48px;border-top:2px solid var(--primary)}
.foot{
  display:flex;justify-content:space-between;align-items:baseline;gap:14px;flex-wrap:wrap;
  color:var(--muted);
  font-family:var(--mono);font-size:.64rem;letter-spacing:.18em;text-transform:uppercase;
}
.foot .mono{font-family:var(--mono);font-size:.76rem}
.foot a.mono:hover{color:var(--primary)}

/* ---------- back to top ---------- */
.back-top{
  /* 与 fab 同组：44px、白底细边框、黑图标；叠在联系按钮上方 12px */
  position:fixed;right:24px;bottom:80px;z-index:150;width:44px;height:44px;border-radius:0;
  background:var(--card);color:var(--text);display:flex;align-items:center;justify-content:center;cursor:pointer;
  border:var(--rule) solid var(--line-strong);box-shadow:none;opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .3s ease,transform .3s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.back-top.show{opacity:1;transform:none;pointer-events:auto}
.back-top:hover{background:var(--primary);color:var(--on-primary);border-color:var(--primary)}
.back-top svg{width:19px;height:19px;fill:currentColor}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal.visible{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}

/* ---------- responsive ---------- */
@media (max-width:640px){
  :root{--nav-gap:0px;--nav-box-h:54px;--nav-h:54px}
  body > nav .nav-inner{padding:0 var(--wrap-pad)}
}
/* About 网格的收缩：中屏技能卡两张一行，窄屏全部单栏 */
@media (max-width:1024px){
  .skill-card{grid-column:span 6}
}
@media (max-width:860px){
  .portrait,.about-text,
  .contact-wrap > .contact-card:first-child,
  .contact-wrap > .contact-card:last-child{grid-column:1 / -1}
  .skill-card{grid-column:1 / -1}
}
@media (max-width:960px){
  .nav-links{display:none}
  .burger{display:block}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
}

/* ---------- admin draft notice (only shows when localStorage has drafts) ---------- */
.draft-tip{
  max-width:840px;margin:0 auto 26px;padding:13px 18px;border-radius:var(--radius-sm);
  background:var(--primary-soft);border:1px solid rgba(18,18,18,.18);
  color:var(--text);font-size:.85rem;line-height:1.6;
}
.draft-tip a{color:var(--primary);font-weight:600;text-decoration:underline}
html[data-theme="dark"] .draft-tip{border-color:rgba(245,245,240,.3)}


/* ---------- case study 详情页 ---------- */
.cs-hero{
  position:relative;overflow:hidden;padding:150px 0 56px;
  background:var(--hero-bg);transition:background .35s ease;
}
.cs-hero .cs-cover{
  /* 严格 2:1：宽度吃满栏宽，高度按比例自动，不依赖视口高度 */
  position:relative;aspect-ratio:2/1;border-radius:var(--radius);overflow:hidden;
  margin:44px 0 0;background:var(--card-2);
  border:var(--rule) solid var(--line);box-shadow:none;
}
html[data-theme="dark"] .cs-hero .cs-cover{box-shadow:none}
.cs-cover > div,.cs-cover img{width:100%;height:100%;object-fit:cover;display:block}
.cs-back{
  display:inline-flex;align-items:center;gap:12px;margin-bottom:34px;
  font-family:var(--mono);font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;
  font-weight:600;color:var(--primary);
}
.cs-back::before{
  content:"\2190";width:32px;height:32px;border-radius:var(--radius);border:var(--rule) solid var(--primary);
  display:flex;align-items:center;justify-content:center;font-family:var(--font);font-size:1rem;
  transition:background .3s,color .3s,transform .35s cubic-bezier(.2,.7,.2,1);
}
.cs-back:hover::before{background:var(--primary);color:var(--on-primary);transform:translateX(-3px)}
.cs-hero h1{font-size:clamp(2rem,4.2vw,3.2rem);margin:0 0 16px;text-align:left;max-width:24ch}
.cs-hero .cs-sum{max-width:620px;margin:0;color:var(--muted);font-size:1.05rem;line-height:1.7}
.cs-meta{
  display:flex;gap:18px;flex-wrap:wrap;margin-top:26px;padding-top:20px;
  border-top:var(--rule) solid var(--line);
}
.cs-meta .cm{
  font-family:var(--mono);font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);
}
.cs-meta .cm b{color:var(--text);font-weight:600}
.cs-sec{padding:0;margin:0 0 var(--cs-sec-gap)}
.cs-sec:last-of-type{margin-bottom:var(--cs-sec-gap)}
.cs-sec > *{margin-top:0}
.cs-sec > * + *{margin-top:var(--cs-block-gap)}
.cs-sec > .cs-sec-lbl + h2{margin-top:8px}
.cs-sec > h2 + *{margin-top:var(--cs-head-gap)}
.cs-sec > h2 + .cs-intro{margin-top:8px}
.cs-sec > .cs-intro + *{margin-top:var(--cs-head-gap)}
.cs-sec > p + p{margin-top:14px}
.cs-sec .cs-sec-lbl{
  /* 纯编号标记：数字 + 横线，文字由 h2 承担，所以用更浅的次级色 */
  font-family:var(--mono);font-size:.64rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--muted);font-weight:500;margin-bottom:0;
}
.cs-sec h2{font-size:clamp(1.55rem,3vw,2.1rem);font-weight:600;letter-spacing:-.02em;margin-bottom:0;line-height:1.25}
.cs-sec p{color:var(--text);line-height:1.85;font-size:1.02rem}
.cs-sec ul{margin:0;padding:0;list-style:none}
.cs-sec li{
  position:relative;padding-left:26px;margin:10px 0;line-height:1.7;color:var(--text);font-size:1rem;
}
.cs-sec li::before{
  content:"";position:absolute;left:0;top:.72em;width:11px;height:1px;border-radius:0;
  background:var(--primary);opacity:.9;
}

/* 数据点 */
.cs-hl{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:0}
.cs-hl .h{
  padding:24px 20px;border-radius:0;background:transparent;
  border:var(--rule) solid var(--line-strong);box-shadow:none;
  text-align:left;transition:transform .3s cubic-bezier(.2,.7,.2,1),border-color .3s ease;
}
.cs-hl .h:hover{transform:translateY(-3px);border-color:var(--primary)}
.cs-hl .n{font-size:1.9rem;font-weight:600;letter-spacing:-.03em;color:var(--primary)}
.cs-hl .l{font-size:.78rem;color:var(--muted);margin-top:6px;line-height:1.45}
@media (max-width:640px){.cs-hl{grid-template-columns:1fr}}

/* 图片墙 */
.cs-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin:0}
.cs-grid .cg{aspect-ratio:16/10;border-radius:var(--radius-sm);overflow:hidden;background:var(--card-2)}
.cs-grid .cg.wide{grid-column:1/-1;aspect-ratio:21/9}
.cs-grid .cg > div,.cs-grid .cg img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .6s cubic-bezier(.2,.7,.2,1)}
.cs-grid .cg:hover > div,.cs-grid .cg:hover img{transform:scale(1.05)}
@media (max-width:640px){.cs-grid{grid-template-columns:1fr}}

/* 上/下一个项目 */
.cs-nav{max-width:760px;margin:40px auto 100px}
.cs-nav-inner{display:grid;grid-template-columns:1fr 1fr;gap:14px;padding-top:26px}
.cs-nav-inner a{
  display:block;padding:22px 24px;border-radius:var(--radius-sm);border:var(--rule) solid var(--line);
  background:var(--card);transition:border-color .3s,transform .3s cubic-bezier(.2,.7,.2,1),background .3s;
}
.cs-nav-inner a:hover{border-color:var(--text);transform:translateY(-3px);background:var(--bg-soft)}
.cs-nav-inner .dir{font-family:var(--mono);font-size:.66rem;letter-spacing:.16em;text-transform:uppercase;color:var(--primary);margin-bottom:6px}
.cs-nav-inner .t{font-size:.95rem;font-weight:600;color:var(--text)}
@media (max-width:560px){.cs-nav-inner{grid-template-columns:1fr}}

/* ============================================================
   CASE STUDY — 数据驱动章节 + 侧边导航
   ============================================================ */
.cs-layout{
  max-width:1220px;margin:0 auto;
  padding:44px 28px 0;
  display:grid;grid-template-columns:184px minmax(0,860px);
  gap:64px;justify-content:center;align-items:start;
}
.cs-main{min-width:0}
@media (max-width:760px){
  :root{--cs-sec-gap:60px;--cs-head-gap:14px;--cs-block-gap:18px}
}


/* 侧边导航：吸顶排在正文左侧，与内容对齐 */
.cs-side{
  position:sticky;top:calc(var(--nav-h) + 22px);
  width:184px;padding:16px 12px;border-radius:var(--radius-sm);
  background:var(--card);border:var(--rule) solid var(--line);
  box-shadow:var(--shadow-sm);
  /* 章节多时侧栏自身滚动，不会长出视口导致后面的项点不到 */
  max-height:calc(100vh - var(--nav-h) - 48px);
  overflow-y:auto;overscroll-behavior:contain;
  z-index:20;                 /* 压在粒子 canvas 之上，确保可点击 */
}
.cs-side::-webkit-scrollbar{width:5px}
.cs-side::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:0}
html[data-theme="dark"] .cs-side{box-shadow:var(--shadow-sm)}
/* 「On this page」是标题不是选项：字号更小、颜色更淡、不做圆角块，
   底下压一条分隔线把它和可点击的目录项彻底分开。 */
.cs-side-lbl{
  font-size:.55rem;font-weight:500;letter-spacing:.16em;text-transform:uppercase;
  color:var(--muted);opacity:.62;
  margin:2px 10px 0;padding-bottom:10px;text-align:left;
  border-bottom:1px solid var(--line);
  cursor:default;user-select:none;
}
.cs-side-nav{display:flex;flex-direction:column;gap:2px;margin-top:10px}
.cs-side-nav a{
  display:flex;gap:9px;align-items:baseline;text-align:left;
  cursor:pointer;
  padding:8px 10px;border-radius:0;
  font-size:.75rem;font-weight:500;color:var(--muted);line-height:1.3;
  transition:color .2s,background .2s;
}
.cs-side-nav a span{font-size:.6rem;font-weight:500;color:var(--muted);letter-spacing:.04em}
/* 二级条目：缩进 + 更小字号，靠左侧细线归属到父级 */
.cs-side-nav a.sub{
  padding-left:20px;font-size:.7rem;position:relative;
}
.cs-side-nav a.sub::before{
  content:"";position:absolute;left:10px;top:0;bottom:0;width:var(--rule);background:var(--line);
}
.cs-side-nav a.sub span{font-size:.55rem;opacity:.75}
.cs-mnav a.sub span{font-size:.6rem}
.cs-side-nav a:hover{color:var(--text);background:var(--bg-soft)}
.cs-side-nav a.active{color:var(--on-primary);background:var(--primary)}
.cs-side-nav a.active span{color:var(--on-primary);opacity:.6}

.cs-sec{scroll-margin-top:calc(var(--nav-h) + 34px)}
.scn[data-sec]{scroll-margin-top:calc(var(--nav-h) + 34px)}
.cs-intro{color:var(--sec);font-size:.85rem;line-height:1.65;margin-bottom:0;max-width:62ch}

/* 窄屏：隐藏侧栏，改用顶部横向胶囊导航 */
.cs-mnav{display:none}
@media (max-width:1220px){
  .cs-layout{
    grid-template-columns:minmax(0,1fr);gap:0;
    max-width:860px;padding:34px 20px 0;
  }
  .cs-side{display:none}
  .cs-mnav{
    display:flex;gap:8px;overflow-x:auto;padding:0 4px 16px;
    position:sticky;top:calc(var(--nav-h) - 6px);z-index:30;
    margin-bottom:10px;background:var(--bg);
    -webkit-overflow-scrolling:touch;scrollbar-width:none;
  }
  .cs-mnav::-webkit-scrollbar{display:none}
  .cs-mnav a{
    flex:0 0 auto;display:inline-flex;align-items:center;gap:7px;
    padding:8px 14px;border-radius:var(--radius-sm);border:var(--rule) solid var(--line);
    background:var(--card);color:var(--muted);font-size:.8rem;font-weight:600;
    transition:background .2s,color .2s,border-color .2s;
  }
  .cs-mnav a span{font-size:.66rem;color:var(--muted)}
  .cs-mnav a.active{background:var(--primary);color:var(--on-primary);border-color:transparent}
  .cs-mnav a.active span{color:rgba(255,255,255,.78)}
}

.cs-steps{display:flex;flex-direction:column;gap:14px}
.cs-step{
  display:grid;grid-template-columns:58px 1fr;gap:18px;
  padding:20px 22px;border-radius:var(--radius-sm);background:var(--card);
  border:var(--rule) solid var(--line);box-shadow:var(--shadow-sm);
  transition:transform .3s cubic-bezier(.2,.7,.2,1),box-shadow .3s ease;
}
.cs-step:hover{transform:translateX(5px);box-shadow:var(--shadow-md)}
.cs-step-n{font-size:1.3rem;font-weight:600;color:var(--primary);letter-spacing:-.02em}
.cs-step-body h3{font-size:1.18rem;font-weight:600;margin-bottom:6px}
.cs-step-body p{color:var(--muted);font-size:.92rem;line-height:1.66;margin:0}
@media (max-width:560px){.cs-step{grid-template-columns:1fr;gap:8px}.cs-step-n{font-size:1.1rem}}

/* 同理心地图 empathy */
/* ---- User persona：人物卡 ---- */
.cs-persona{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.pers-card{
  border:var(--rule) solid var(--line);border-radius:var(--radius-sm);background:var(--card);
  box-shadow:var(--shadow-sm);overflow:hidden;
}
html[data-theme="dark"] .pers-card{box-shadow:var(--shadow-sm)}
.pers-head{
  display:flex;align-items:center;gap:12px;padding:15px 18px;
  border-bottom:1px solid var(--line);background:var(--bg-soft);
}
.pers-ico{
  width:38px;height:38px;flex:0 0 38px;border-radius:var(--radius-sm);
  display:flex;align-items:center;justify-content:center;font-size:1.15rem;
  background:var(--card);border:var(--rule) solid var(--line);
}
.pers-id{display:flex;flex-direction:column;gap:2px;min-width:0}
.pers-id b{font-size:1rem;font-weight:600;line-height:1.2}
.pers-id i{
  font-style:normal;font-size:.62rem;font-weight:600;letter-spacing:.16em;
  text-transform:uppercase;color:var(--muted);
}
.pers-q{
  margin:0;padding:16px 18px;
  border-bottom:1px dashed var(--line);
  font-size:.94rem;line-height:1.6;color:var(--text);
}
.pers-traits{display:flex;flex-direction:column}
.pers-t{padding:14px 18px}
.pers-t + .pers-t{border-top:1px dashed var(--line)}
.pers-t b{
  font-size:.6rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;
  color:var(--primary);
}
.pers-t ul{margin:9px 0 0;padding:0;list-style:none}
.pers-t li{
  font-size:.84rem;color:var(--text);line-height:1.55;margin:5px 0;
  padding-left:14px;position:relative;
}
.pers-t li::before{content:"\00b7";position:absolute;left:0;color:var(--sec)}
@media (max-width:760px){.cs-persona{grid-template-columns:1fr}}

/* ---- Visual definition：色板 + 字体 ---- */
.vis-sw{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(104px,1fr));
  gap:14px;margin:0;
}
.vis-c{display:flex;flex-direction:column;gap:7px;min-width:0}
.vis-chip{
  display:block;height:76px;border-radius:var(--radius-sm);
  border:var(--rule) solid var(--line);box-shadow:var(--shadow-sm);
}
html[data-theme="dark"] .vis-chip{box-shadow:var(--shadow-sm)}
.vis-c b{font-size:.78rem;font-weight:600;line-height:1.2}
.vis-c i{
  font-style:normal;font-size:.64rem;font-weight:600;letter-spacing:.16em;
  color:var(--muted);text-transform:uppercase;
}
.vis-type{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px}
.vis-f{
  padding:18px 20px;border-radius:var(--radius-sm);
  background:var(--card);border:var(--rule) solid var(--line);box-shadow:var(--shadow-sm);
  display:flex;flex-direction:column;gap:4px;
}
html[data-theme="dark"] .vis-f{box-shadow:var(--shadow-sm)}
.vis-f b{font-size:1.02rem;font-weight:600}
.vis-f i{
  font-style:normal;font-size:.6rem;font-weight:500;letter-spacing:.16em;
  text-transform:uppercase;color:var(--muted);
}
.vis-spec{font-size:1.7rem;font-weight:600;letter-spacing:-.02em;margin-top:8px;line-height:1}

.cs-emp{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.emp-card{border:var(--rule) solid var(--line);border-radius:var(--radius-sm);background:var(--card);overflow:hidden}
.emp-head{display:flex;align-items:center;gap:10px;padding:15px 18px;border-bottom:1px solid var(--line);background:var(--bg-soft)}
.emp-ico{font-size:1.2rem}
.emp-head h3{font-size:1rem;font-weight:600}
.emp-grid{display:grid;grid-template-columns:1fr 1fr}
.emp-q{padding:14px 16px}
.emp-q:nth-child(1),.emp-q:nth-child(2){border-bottom:1px dashed var(--line)}
.emp-q:nth-child(1),.emp-q:nth-child(3){border-right:1px dashed var(--line)}
.emp-q b{font-family:var(--mono);font-size:.6rem;letter-spacing:.16em;text-transform:uppercase;color:var(--primary)}
.emp-q ul{margin:9px 0 0;padding:0;list-style:none}
.emp-q li{font-size:.84rem;color:var(--text);line-height:1.55;margin:5px 0;padding-left:14px;position:relative}
.emp-q li::before{content:"·";position:absolute;left:0;color:var(--sec)}
@media (max-width:760px){.cs-emp{grid-template-columns:1fr}}
@media (max-width:460px){
  .emp-grid{grid-template-columns:1fr}
  .emp-q{border-right:0!important;border-bottom:1px dashed var(--line)!important}
  .emp-q:last-child{border-bottom:0!important}
}

/* 用户旅程 journey */
.cs-journey{overflow-x:auto;border:var(--rule) solid var(--line);border-radius:var(--radius-sm);background:var(--card)}
.cs-journey > *{display:grid;grid-template-columns:120px repeat(var(--jrN,5),minmax(150px,1fr));min-width:860px}
.cs-journey .jr-head{background:var(--primary);color:var(--on-primary)}
.cs-journey .jr-stage{font-weight:600;font-size:.9rem;padding:14px 16px;border-right:1px solid rgba(255,255,255,.15)}
.cs-journey .jr-row{border-top:1px solid var(--line)}
.cs-journey .jr-key{
  display:flex;align-items:center;font-family:var(--mono);font-size:.62rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--primary);font-weight:600;
  padding:14px 16px;background:var(--bg-soft);border-right:1px solid var(--line);
}
.cs-journey .jr-cell{padding:14px 16px;font-size:.86rem;line-height:1.55;color:var(--text);border-right:1px solid var(--line)}
.cs-journey .jr-cell:last-child{border-right:0}
.cs-journey .jr-cell.emo{color:var(--muted)}

/* 用户流程 flow */
.cs-flows{display:flex;flex-direction:column;gap:26px}
.cs-flow h3{font-size:1rem;font-weight:600;margin-bottom:12px}
.flow-track{display:flex;align-items:center;gap:10px;overflow-x:auto;padding-bottom:8px;scrollbar-width:none}
.flow-track::-webkit-scrollbar{display:none}
.flow-step{
  flex:0 0 auto;padding:11px 16px;border-radius:var(--radius-sm);border:var(--rule) solid var(--line);
  background:var(--card);font-size:.85rem;font-weight:600;color:var(--text);
  box-shadow:var(--shadow-sm);white-space:nowrap;
}
.flow-step:first-child{background:var(--primary);color:var(--on-primary);border-color:transparent}
.flow-step:last-child{background:var(--primary-soft);border-color:var(--primary);color:var(--primary)}
.flow-arrow{flex:0 0 auto;color:var(--primary);font-size:1.05rem}

/* 草图 sketch */
.cs-sketch{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media (max-width:720px){.cs-sketch{grid-template-columns:repeat(2,1fr)}}
.sk-tile,.proto-tile{position:relative;border-radius:var(--radius-sm);overflow:hidden;background:var(--card-2);border:var(--rule) solid var(--line)}
.sk-tile{aspect-ratio:4/3}
.proto-tile{aspect-ratio:16/11}
.sk-tile > img,.sk-tile > div,.proto-tile > img,.proto-tile > div,.sc-frame > img,.sc-frame > div{width:100%;height:100%;object-fit:cover;display:block}
.md-lbl{
  position:absolute;left:10px;bottom:10px;z-index:2;padding:4px 10px;border-radius:var(--radius-sm);
  background:rgba(255,255,255,.85);color:#121212;font-size:.62rem;font-weight:600;
  letter-spacing:.06em;white-space:nowrap;backdrop-filter:blur(6px);
}
html[data-theme="dark"] .md-lbl{background:rgba(14,14,13,.78);color:#F5F5F0}

/* ---- 线框手机稿占位（手绘图 / 原型图 / 页面展示通用） ---- */
.wphone{
  position:absolute;inset:0;z-index:0;display:flex;flex-direction:column;
  align-items:center;justify-content:center;padding:0 5%;
  background:linear-gradient(180deg,#FFFFFF,#F1F1ED);
  transform:none;
  transition:transform .5s cubic-bezier(.2,.7,.2,1);
}
html[data-theme="dark"] .wphone{background:linear-gradient(180deg,#1E1E1C,#141412)}
.tile:hover .wphone,.sk-tile:hover .wphone,.proto-tile:hover .wphone,.sc-frame:hover .wphone{transform:scale(1.02)}
.wp-notch{width:46%;height:6px;border-radius:2px;background:rgba(0,0,0,.12);margin-bottom:12px}
html[data-theme="dark"] .wp-notch{background:rgba(255,255,255,.16)}
.wp-body{width:84%;display:flex;flex-direction:column;gap:9px}
.wl-t{height:9px;width:66%;border-radius:4px;background:var(--primary);opacity:.8}
.wl-s{height:6px;width:44%;border-radius:3px;background:var(--line)}
.wb-card{height:46px;border-radius:9px;border:var(--rule) solid var(--line);background:rgba(255,255,255,.75)}
html[data-theme="dark"] .wb-card{background:rgba(255,255,255,.05)}
.wb-card.small{height:26px}
.wb-pill{height:22px;width:60%;border-radius:2px;background:var(--primary-soft);border:1px solid var(--primary);opacity:.85}
.wb-top{height:26px;border-radius:9px;background:var(--primary-soft);border:1px solid var(--primary);opacity:.45}
.wb-list{display:flex;flex-direction:column;gap:8px}
.wb-list i{height:13px;border-radius:7px;background:var(--line)}
.wb-hero{height:54px;border-radius:9px;background:linear-gradient(135deg,var(--primary-soft),var(--light));border:var(--rule) solid var(--line)}
.wb-row{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.wb-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.wb-grid i{height:32px;border-radius:9px;background:var(--line)}
/* 手绘图：纸张质感 + 虚线，更接近草图 */
.sk-tile .wphone{background:linear-gradient(180deg,#FFFFFF,#F0F0EC);transform:scale(.965)}
html[data-theme="dark"] .sk-tile .wphone{background:linear-gradient(180deg,#1C1C1A,#131311)}
.sk-tile .wp-body div{border-style:dashed!important}
.sk-tile .wb-card{background:rgba(255,255,255,.55)}

/* 旅程图情绪计量条 */
.jr-emot{display:inline-flex;gap:3px;margin-right:8px;vertical-align:1px}
.jr-emot i{width:6px;height:6px;border-radius:50%;background:var(--line)}
.jr-emot i.on{background:var(--primary);box-shadow:0 0 0 2px var(--primary-soft)}


/* 原型 prototype */
.cs-proto{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media (max-width:560px){.cs-proto{grid-template-columns:1fr}}
.cs-proto-link{display:inline-flex;align-items:center;gap:8px;margin-top:24px;font-weight:600;color:var(--primary)}

/* 页面展示 showcase */
.cs-showcase{display:flex;flex-direction:column;gap:clamp(44px,5vw,64px)}
.sc-mod{display:grid;grid-template-columns:1fr 1.25fr;gap:34px;align-items:center}
.sc-mod.rev .sc-txt{order:2}
.sc-mod.rev .sc-media{order:1}
.sc-n{font-family:var(--mono);font-size:.72rem;letter-spacing:.16em;color:var(--primary);margin-bottom:8px}
.sc-txt h3{font-size:1.3rem;font-weight:600;margin-bottom:10px}
.sc-txt p{color:var(--muted);font-size:.95rem;line-height:1.7}
.sc-frame{position:relative;aspect-ratio:16/10;border-radius:var(--radius-sm);overflow:hidden;background:var(--card-2);border:var(--rule) solid var(--line);box-shadow:none}
.sc-frame video{width:100%;height:100%;object-fit:cover;display:block}
.sc-media .md-lbl{
  position:absolute;left:12px;bottom:12px;padding:5px 12px;border-radius:var(--radius-sm);
  background:rgba(255,255,255,.85);color:#121212;font-size:.64rem;font-weight:600;
  letter-spacing:.06em;backdrop-filter:blur(6px);
}
html[data-theme="dark"] .sc-media .md-lbl{background:rgba(14,14,13,.78);color:#F5F5F0}
@media (max-width:760px){.sc-mod{grid-template-columns:1fr;gap:14px}.sc-mod.rev .sc-txt{order:1}.sc-mod.rev .sc-media{order:2}}

/* 视频展示 video */
.cs-video{margin-top:0}
.cs-video video{width:100%;aspect-ratio:16/9;border-radius:var(--radius-sm);background:#000;display:block}
.cs-video-ph{
  position:relative;aspect-ratio:16/9;border-radius:var(--radius-sm);overflow:hidden;
  background:var(--card-2);border:var(--rule) solid var(--line);
  display:flex;align-items:center;justify-content:center;
}
.cs-video-ph > div{position:absolute;inset:0}
.cs-play{
  position:relative;z-index:2;width:74px;height:74px;border-radius:0;
  background:#F4F4F2;color:#141414;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 30px rgba(0,0,0,.35);transition:transform .3s cubic-bezier(.2,.7,.2,1);
}
.cs-video-ph:hover .cs-play{transform:scale(1.08)}
.cs-play::after{content:"";margin-left:4px;border-style:solid;border-width:9px 0 9px 15px;border-color:transparent transparent transparent currentColor}
.cs-video-lbl{
  position:absolute;left:0;right:0;bottom:24px;text-align:center;color:#fff;
  font-family:var(--mono);font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;
  text-shadow:0 1px 12px rgba(0,0,0,.35);
}


/* 底部上/下个项目导航（已移入内容列内） */
.cs-nav{margin:0 0 70px;padding:0;border-top:var(--rule) solid var(--line)}

/* ---------- 媒体容错（图片加载失败时的优雅降级） ---------- */
.media-failed{opacity:0 !important}
.media-fallback{
  position:absolute;inset:0;z-index:0;
  background:var(--primary);
  opacity:.94;
}
.media-fallback::after{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.14) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:26px 26px;
}

/* ---------- 全屏查看器：小图 -> 大图 渐进替换 ----------
   小图先铺上保证秒开，大图加载完无缝换上。
   加载中给极轻微的模糊，替换瞬间过渡到全清晰，观感上「越看越清楚」。 */
#lbInner img{transition:filter .45s ease}
#lbInner img.lb-loading{filter:blur(.6px) saturate(1.02)}

/* 让所有展示型图片在缩放时保持高质量重采样 */
.masonry .m-frame img,
.strip-tile img,
#lbInner img{image-rendering:auto}

/* ============================================================
   图片渐进加载：骨架屏 -> 淡入
   ------------------------------------------------------------
   之前图片是「一下砸出来」的观感。现在每个图位先占好尺寸、
   显示流动的骨架微光，图片解码完成后再淡入 + 轻微上浮。
   ============================================================ */
@keyframes skelShine{
  0%  {background-position:-160% 0}
  100%{background-position:260% 0}
}
.skel{
  position:absolute;inset:0;z-index:1;pointer-events:none;
  background:var(--card-2);
  overflow:hidden;
}
.skel::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,
    transparent 18%,
    rgba(255,255,255,.72) 42%,
    transparent 66%);
  background-size:220% 100%;
  animation:skelShine 1.5s cubic-bezier(.4,0,.3,1) infinite;
}
html[data-theme="dark"] .skel::after{
  background:linear-gradient(100deg,transparent 18%,rgba(255,255,255,.09) 42%,transparent 66%);
  background-size:220% 100%;
}
/* 骨架淡出 */
.skel.gone{opacity:0;transition:opacity .45s ease}

/* 图片本体：先透明，加载完淡入上浮 */
img.pending{opacity:0;transform:translateY(8px) scale(1.012)}
img.loaded{
  opacity:1;transform:none;
  transition:opacity .62s cubic-bezier(.2,.7,.2,1),transform .62s cubic-bezier(.2,.7,.2,1);
}
/* 瀑布流里图片本身带 hover 缩放，别和淡入的 transform 打架 */
.masonry .m-item .m-frame img.loaded{transition:opacity .62s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}

/* ============================================================
   右下角 Contact 悬浮按钮 + 弹窗表单
   ============================================================ */
.fab{
  /* 与 back-top 同组：44px、白底细边框、黑图标，右对齐同列 */
  position:fixed;right:24px;bottom:24px;z-index:180;
  width:44px;height:44px;border-radius:0;border:var(--rule) solid var(--primary);cursor:pointer;
  background:var(--primary);color:var(--on-primary);
  display:flex;align-items:center;justify-content:center;
  box-shadow:none;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
  /* 入场淡入 + 常驻轻微左右摇摆（丝滑），取代原来的呼吸光环 */
  animation:fabIn .5s ease .6s backwards,
            fabSway 3.8s ease-in-out 1.2s infinite;
}

@keyframes fabIn{from{opacity:0}to{opacity:1}}
@keyframes fabSway{
  0%,100%{transform:translateX(-2.5px) rotate(-1.6deg)}
  50%    {transform:translateX(2.5px) rotate(1.6deg)}
}
/* 悬停：摇摆定格 + 反色，与 back-top 反馈一致 */
.fab:hover{animation-play-state:paused;background:var(--card);color:var(--text);border-color:var(--line-strong)}
/* 可爱的小信封插画 */
.fab svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
/* 信封盖会俏皮地翻一下 */
.fab .flap{transform-origin:12px 9px;transition:transform .4s cubic-bezier(.3,1.5,.5,1)}
.fab:hover .flap{transform:translateY(-1px)}
/* 悬停提示气泡 */
.fab-tip{
  position:fixed;right:96px;bottom:40px;z-index:179;
  padding:8px 14px;border-radius:var(--radius-sm);white-space:nowrap;
  background:var(--text);color:var(--bg);
  font-size:.8rem;font-weight:450;
  opacity:0;transform:translateX(8px);pointer-events:none;
  transition:opacity .26s ease,transform .26s ease;
  box-shadow:none;
}
.fab:hover ~ .fab-tip,.fab-tip.show{opacity:1;transform:none}

/* ---- 弹窗 ---- */
.cmodal{
  position:fixed;inset:0;z-index:400;display:flex;
  align-items:center;justify-content:center;padding:24px;
  opacity:0;pointer-events:none;transition:opacity .3s ease;
}
.cmodal.open{opacity:1;pointer-events:auto}
.cmodal-veil{position:absolute;inset:0;background:rgba(11,11,10,.55);backdrop-filter:blur(6px)}
.cmodal-box{
  position:relative;z-index:2;width:100%;max-width:460px;
  max-height:88vh;overflow-y:auto;
  background:var(--bg);border:var(--rule) solid var(--line);border-radius:var(--radius-lg);
  padding:34px 32px 30px;
  box-shadow:0 40px 90px rgba(14,14,13,.30);
  transform:translateY(20px) scale(.97);
  transition:transform .38s cubic-bezier(.2,.8,.2,1);
}
.cmodal.open .cmodal-box{transform:none}
.cmodal-box h3{font-size:1.6rem;font-weight:600;margin:0 0 8px;letter-spacing:-.01em}
.cmodal-box .cm-sub{color:var(--muted);font-size:.92rem;margin:0 0 22px}
.cmodal-close{
  position:absolute;top:14px;right:14px;width:32px;height:32px;border-radius:0;
  border:var(--rule) solid var(--line);background:var(--card);color:var(--text);
  cursor:pointer;display:flex;align-items:center;justify-content:center;
  font-size:1.05rem;line-height:1;transition:background .2s,transform .2s;
}
.cmodal-close:hover{background:var(--card-2);opacity:.7}
/* 快捷联系方式 */
.cm-quick{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.cm-quick a{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 13px;border-radius:var(--radius-sm);border:var(--rule) solid var(--line);
  background:var(--card-2);color:var(--text);text-decoration:none;
  font-size:.8rem;font-weight:450;transition:background .2s,transform .2s,color .2s;
}
.cm-quick a:hover{background:var(--bg-soft);color:var(--text);transform:translateY(-2px)}
/* 发送成功提示 */
.cm-ok{
  display:none;text-align:center;padding:18px 0 6px;
}
.cm-ok.show{display:block;animation:cmOk .45s cubic-bezier(.2,.8,.2,1)}
@keyframes cmOk{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.cm-ok .tick{
  width:52px;height:52px;border-radius:var(--radius);margin:0 auto 14px;
  background:var(--primary);color:var(--on-primary);
  display:flex;align-items:center;justify-content:center;font-size:1.5rem;
}
.cm-ok p{color:var(--muted);font-size:.92rem}

@media (max-width:600px){
  .fab{right:18px;bottom:18px;width:44px;height:44px}
  .fab svg{width:21px;height:21px}
  .back-top{right:18px;bottom:74px;width:44px;height:44px}
  .fab-tip{display:none}
  .cmodal{padding:16px}
  .cmodal-box{padding:28px 22px 24px;border-radius:var(--radius-sm)}
}
@media (prefers-reduced-motion:reduce){
  .fab{animation:none}
  .fab:hover{box-shadow:none}
  .fab:hover .flap{transform:none}
}

/* ============================================================
   趣味交互：卡片戳章 · 彩蛋彩带 · toast · 派对模式
   ============================================================ */
/* 卡片内部有绝对定位元素（箭头等），保留定位上下文 */
.card{position:relative}

/* ---------- 背景粒子：全页固定，从底部向上生长 + 跟随鼠标（canvas） ---------- */
.bg-particles{position:fixed;inset:0;z-index:0;pointer-events:none}

/* 彩蛋：从天而降的字符 */
.confetti{
  position:fixed;top:-46px;z-index:9999;pointer-events:none;
  line-height:1;
  animation:confettiFall 2.4s cubic-bezier(.2,.6,.4,1) forwards;
}
@keyframes confettiFall{
  0%  {transform:translate3d(0,0,0) rotate(0deg)}
  100%{transform:translate3d(var(--drift,0px),112vh,0) rotate(560deg);opacity:.15}
}

/* toast：小提示气泡 */
.toast{
  position:fixed;left:50%;bottom:100px;z-index:9998;
  transform:translateX(-50%) translateY(12px);
  background:var(--primary);color:var(--on-primary);
  border:0;border-radius:0;
  box-shadow:var(--shadow-md);
  padding:12px 22px;font-family:var(--mono);font-size:.72rem;font-weight:500;
  letter-spacing:.14em;text-transform:uppercase;
  opacity:0;pointer-events:none;
  transition:opacity .25s ease,transform .25s cubic-bezier(.2,.8,.2,1);
  white-space:nowrap;max-width:90vw;overflow:hidden;text-overflow:ellipsis;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* 派对模式：全局抖一抖 + logo 转圈 */
html.party .card,
html.party .btn,
html.party .hero-link,
html.party .hero-sticker,
html.party .stack-cue{animation:partyBounce .38s ease-in-out infinite alternate}
html.party .logo{animation:partySpin 1.6s linear infinite}
@keyframes partyBounce{
  from{transform:translateY(0) rotate(-.5deg)}
  to  {transform:translateY(-5px) rotate(.5deg)}
}
@keyframes partySpin{to{transform:rotate(360deg)}}


/* ============================================================
   文章模块：移动端阅读优化
   ------------------------------------------------------------
   桌面端保持行式（编号 | 封面 | 标题摘要 | 箭头），与 Work 统一。
   窄屏（<=640px）改为纵向卡片：封面全宽在上、文字在下。
   原因：375px 下旧布局的文字区只剩约 149px（一行 9 个汉字），
   标题摘要挤成一团，非常不自然。
   ============================================================ */
@media (max-width:640px){
  /* ---- 列表（Blog 页 .post / 首页 .post-card）---- */
  .post,
  .post-card{
    grid-template-columns:1fr;
    gap:12px;
    padding:0 0 26px;
    border-left:0;
  }
  .post:hover,
  .post-card:hover{border-left-color:transparent}
  .post .p-cover,
  .post-card .p-cover{
    width:100%;
    height:auto;
    aspect-ratio:2/1;
    margin-bottom:2px;
  }
  .post:hover .p-cover,
  .post-card:hover .p-cover{transform:none}
  /* 编号在竖向布局里没有合适的位置，隐藏；日期分类保留 */
  .post .p-idx,
  .post-card .idx{display:none}
  .post .p-main,
  .post-card .pc-main{width:100%}
  .post .date,
  .post-card .meta{margin:2px 0 4px}
  .post h3,
  .post-card h3{font-size:1.3rem;margin:8px 0 6px;line-height:1.32}
  .post p,
  .post-card p{font-size:.9rem;line-height:1.6}
  /* 右侧箭头在窄屏上没意义（整行可点），隐藏 */
  .post .p-go,
  .post-card .more{display:none}

  /* ---- 文章详情页（post.html）---- */
  .article{padding-top:100px;padding-bottom:84px}
  .art-back{margin-bottom:26px}
  .art-cover{margin:0 0 26px}
  .article h1{font-size:clamp(1.62rem,7.4vw,2.05rem);margin-bottom:14px}
  .art-excerpt{font-size:1rem;margin-bottom:26px;padding-bottom:20px}
  .art-body{font-size:1.02rem;line-height:1.8}
  .art-body > p:first-of-type{font-size:1.12rem;line-height:1.68}
  .art-nav{margin-top:44px;padding-top:24px}
}


/* ============================================================
   用户心声（Why we do it）：4×2 聊天气泡 + 浅灰 note 框
   ============================================================ */
.cs-voice{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.v-bubble{
  display:flex;align-items:flex-start;gap:10px;
  background:var(--bg-soft);border:var(--rule) solid var(--line);
  border-radius:8px;padding:14px 16px;
  font-size:.95rem;line-height:1.55;color:var(--text);
}
.v-bubble .v-emoji{flex:0 0 auto;font-size:1.2rem;line-height:1.4}
.v-bubble .v-txt{min-width:0}
/* 第 8 格：虚化省略号，暗示「还有更多声音」 */
.v-bubble.v-more{opacity:.5;background:transparent;border-style:dashed}
@media (max-width:640px){.cs-voice{grid-template-columns:1fr}}

/* 场景内的手机样机：一行三个，等宽 9:19.5 竖屏 */
.scn-phones{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:20px}
.scn-ph{margin:0;display:flex;flex-direction:column;gap:10px;min-width:0}
.scn-ph-screen{
  /* 素材是透明 PNG：不加底色、不加边框，直接浮在页面上 */
  position:relative;aspect-ratio:11/8;overflow:visible;
  background:transparent;border:0;
  transition:transform .35s cubic-bezier(.2,.7,.2,1);
}
.scn-ph:hover .scn-ph-screen{transform:translateY(-4px)}
.scn-ph-screen video,.scn-ph-screen img{
  width:100%;height:100%;object-fit:contain;display:block;
  transition:transform .5s cubic-bezier(.2,.7,.2,1);
}
.scn-ph:hover .scn-ph-screen img{transform:scale(1.03)}
/* 没有真实素材时才是竖屏线框：这种情况才需要底色和边框 */
.scn-ph-screen:has(> .wphone){
  aspect-ratio:9/19.5;overflow:hidden;
  background:var(--card-2);border:var(--rule) solid var(--line);
}
.scn-ph figcaption{
  display:flex;gap:8px;align-items:baseline;
  font-size:.78rem;line-height:1.5;color:var(--muted);
}
.scn-ph figcaption span{
  flex:0 0 auto;font-family:var(--mono);font-size:.62rem;letter-spacing:.16em;
  color:var(--text);font-weight:600;
}
@media (max-width:640px){
  .scn-phones{grid-template-columns:1fr;gap:16px}
  .scn-ph figcaption{font-size:.72rem}
}

/* ---- 核心用户旅程：竖向场景时间线 ---- */
.cs-scns{display:flex;flex-direction:column;position:relative}
.scn{
  display:grid;grid-template-columns:64px minmax(0,1fr);gap:20px;
  position:relative;padding:20px 0 22px;
  border-top:var(--rule) solid var(--line);
}
.scn:last-child{border-bottom:var(--rule) solid var(--line)}
/* 编号列：贯通的竖线把四个场景串成一条旅程 */
.scn::before{
  content:"";position:absolute;left:31px;top:0;bottom:0;width:var(--rule);
  background:var(--line);
}
.scn-n{
  position:relative;z-index:1;align-self:start;
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  background:var(--text);color:var(--bg);border-radius:var(--radius-sm);
  font-family:var(--mono);font-size:.76rem;font-weight:600;letter-spacing:.04em;
  transition:background .3s,color .3s;
}
.scn:hover .scn-n{background:var(--primary);color:var(--on-primary)}
.scn-body{min-width:0;padding-top:2px}
.scn-body h3{font-size:1.08rem;font-weight:600;letter-spacing:-.01em;margin:0 0 8px;line-height:1.35}
.scn-body p{margin:0;font-size:.94rem;line-height:1.75;color:var(--muted)}
.scn-body p strong{color:var(--text);font-weight:600}
@media (max-width:640px){
  .scn{grid-template-columns:40px minmax(0,1fr);gap:14px;padding:16px 0 18px}
  .scn::before{left:19px}
  .scn-n{width:38px;height:38px;font-size:.68rem}
}

/* 场景下的成功提示：左列=庆祝动效叠加在文字上，右=截图（无外边框） */
.scn-note-row{
  display:grid;grid-template-columns:minmax(0,2fr) minmax(0,3fr);
  gap:24px;margin-top:42px;align-items:stretch;
}
.scn-note{
  position:relative;overflow:hidden;padding:26px 26px 24px;font-size:.92rem;
  background:var(--bg-soft);border:var(--rule) solid var(--line);
  border-left:3px solid var(--primary);border-radius:var(--radius-sm);
  display:flex;flex-direction:column;justify-content:flex-end;
}
.scn-note p{
  position:relative;z-index:1;margin:0;font-size:.92rem;line-height:1.85;color:var(--text);
}
.scn-note strong{color:var(--text);font-weight:600}
.scn-gif{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  pointer-events:none;z-index:2;opacity:.9;
  transform:scale(.75);
}
.scn-shot{margin:0;min-width:0;display:flex;flex-direction:column;justify-content:center;align-items:center}
.scn-shot img{
  width:100%;max-height:560px;object-fit:contain;display:block;border-radius:var(--radius-sm);
}
@media (max-width:860px){
  .scn-note-row{grid-template-columns:1fr;gap:16px}
}

/* ---- 设计原则：一行三张卡片 ---- */
.cs-principles{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}

/* 2x2 grid cards */
.cs-grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}

/* Goals: 左文字框 : 右图片 = 1:1，两侧等高 */
.cs-goals{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:stretch}
/* 左侧整体是一个框，条目之间只用留白分隔（不画线、不加符号） */
.g-list{
  list-style:none;margin:0;padding:30px 32px;height:100%;min-height:380px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-sm);
  display:flex;flex-direction:column;justify-content:center;gap:22px;
}
.g-list--grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;padding:0;height:auto;min-height:0;background:none;border:0}
.g-list--grid .g-item{padding:20px 22px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--card)}
/* 覆盖 .cs-sec li 的蓝色短横线与左内边距 */
.cs-sec .g-item{padding:0;margin:0;padding-left:0;position:static;border:0}
.cs-sec .g-item::before{content:none !important;display:none !important}
.cs-sec .g-list > .g-item + .g-item{border-top:0}
.g-t{display:block;font-size:.95rem;line-height:1.65;color:var(--text);font-weight:400}
.g-d{display:block;font-size:.82rem;line-height:1.55;color:var(--muted);margin-top:3px}
/* 右侧图片：绝对定位填满整列，高度始终等于左侧文字框 */
.g-shot{
  margin:0;border-radius:var(--radius-sm);overflow:hidden;position:relative;
  border:1px solid var(--line);background:var(--card);
  height:100%;
}
.g-shot img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:top center;display:block}
.g-shot figcaption{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  font-family:var(--mono);font-size:.66rem;color:var(--muted);
  padding:8px 12px;text-align:center;background:var(--card);border-top:1px solid var(--line);
}
@media (max-width:760px){
  .cs-goals{grid-template-columns:1fr;gap:20px}
  .g-list{min-height:0;padding:24px 22px;gap:18px}
  .g-list--grid{grid-template-columns:1fr}
  .g-shot{height:auto;min-height:0}
  .g-shot img{position:static;height:auto;object-fit:contain}
  .g-shot figcaption{position:static}
}
.cs-grid-2 .g-card{
  padding:24px 26px;border-radius:var(--radius-sm);border:1px solid var(--line);
  background:var(--card);transition:transform .3s,box-shadow .3s;
}
.cs-grid-2 .g-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm)}
.cs-grid-2 .g-card h3{font-size:1rem;font-weight:600;margin:0 0 8px;line-height:1.4}
.cs-grid-2 .g-card p{margin:0;font-size:.88rem;line-height:1.7;color:var(--muted)}
@media (max-width:640px){.cs-grid-2{grid-template-columns:1fr}}

.pr-card{
  padding:22px 20px 24px;background:var(--card);
  border:var(--rule) solid var(--line);border-top:2px solid var(--text);
  border-radius:var(--radius-sm);display:flex;flex-direction:column;
  transition:transform .3s cubic-bezier(.2,.7,.2,1),border-color .3s;
}
.pr-card:hover{transform:translateY(-3px);border-top-color:var(--primary)}
.pr-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:16px}
.pr-ico{
  width:40px;height:40px;flex:0 0 40px;display:flex;align-items:center;justify-content:center;
  border:var(--rule) solid var(--line);border-radius:var(--radius-sm);
  background:var(--bg-soft);color:var(--text);
  transition:background .3s,color .3s,border-color .3s;
}
.pr-ico svg{width:21px;height:21px;display:block}
.pr-card:hover .pr-ico{background:var(--text);color:var(--bg);border-color:var(--text)}
.pr-n{
  font-family:var(--mono);font-size:.66rem;letter-spacing:.22em;
  color:var(--muted);font-weight:500;
}
.pr-card h3{font-size:1.08rem;font-weight:600;letter-spacing:-.01em;margin:0 0 9px;line-height:1.3}
.pr-card p{margin:0;font-size:.9rem;line-height:1.72;color:var(--muted)}
.pr-card p strong{color:var(--text);font-weight:600}
@media (max-width:820px){.cs-principles{grid-template-columns:1fr;gap:12px}}

/* 浅灰 note 框：图标 + I want to say... + 段落 */
.cs-note{
  background:var(--bg-soft);
  border:var(--rule) solid var(--line);border-left:3px solid var(--primary);
  padding:22px 24px;border-radius:var(--radius-sm);
}
.note-head{
  display:flex;align-items:center;gap:10px;margin-bottom:12px;
  font-family:var(--mono);font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--text);
}
.note-head .note-ico{font-size:1.15rem;line-height:1}
.cs-note p{margin:0;font-size:1rem;line-height:1.75;color:var(--text)}
.cs-note p strong{font-weight:600}



/* ============================================================
   密码保护锁屏（AI Skin Diagnostic Tool 等 locked 项目）
   ============================================================ */
.cs-lock{max-width:640px;margin:0 auto;padding:150px 0 110px}
.lock-box{
  background:var(--bg-soft);border:var(--rule) solid var(--line);
  border-left:3px solid var(--primary);
  padding:46px 42px;text-align:center;border-radius:var(--radius-sm);
}
.lock-ico{font-size:2rem;margin-bottom:14px;line-height:1}
.lock-box h1{font-size:clamp(1.4rem,3vw,1.9rem);margin-bottom:12px;text-align:center}
.lock-sub{color:var(--muted);font-size:.95rem;line-height:1.6;margin-bottom:28px}
.lock-form{display:flex;gap:10px;max-width:360px;margin:0 auto}
.lock-form input{
  flex:1;min-width:0;padding:13px 14px;border-radius:0;
  border:var(--rule) solid var(--line-strong);background:var(--card);
  color:var(--text);font-family:var(--font);font-size:.95rem;outline:none;
  transition:border-color .2s;
}
.lock-form input:focus{border-color:var(--primary)}
.lock-form button{
  flex:0 0 auto;padding:13px 20px;border:0;border-radius:0;
  background:var(--primary);color:var(--on-primary);cursor:pointer;
  font-family:var(--mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;
  transition:background .2s;
}
.lock-form button:hover{background:var(--text)}
.lock-err{color:var(--primary);font-weight:600;font-size:.84rem;margin-top:14px}
@media (max-width:560px){
  .cs-lock{padding:110px 0 80px}
  .lock-box{padding:34px 22px}
  .lock-form{flex-direction:column}
}


/* ============================================================
   TOOLS —— 工具箱 + 一周菜谱
   ============================================================ */
.tools-sec{padding:0 0 110px}
.tool-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
@media (max-width:820px){.tool-grid{grid-template-columns:1fr}}
.tool-card{
  display:flex;flex-direction:column;gap:16px;padding:28px 26px 26px;
  background:var(--card);border:var(--rule) solid var(--line);
  border-top:2px solid var(--text);border-radius:var(--radius-sm);
  transition:transform .35s cubic-bezier(.2,.7,.2,1),border-color .3s;
}
.tool-card:hover{transform:translateY(-4px);border-top-color:var(--primary)}
.tool-card.is-soon{opacity:.5;pointer-events:none}
.tool-ico{
  width:46px;height:46px;display:flex;align-items:center;justify-content:center;
  border:var(--rule) solid var(--line);border-radius:var(--radius-sm);
  background:var(--bg-soft);color:var(--text);
  transition:background .3s,color .3s,border-color .3s;
}
.tool-ico svg{width:23px;height:23px;display:block}
.tool-card:hover .tool-ico{background:var(--text);color:var(--bg);border-color:var(--text)}
.tool-body h2{font-size:1.24rem;font-weight:600;letter-spacing:-.01em;margin:0 0 8px}
.tool-body p{margin:0;font-size:.93rem;line-height:1.7;color:var(--muted)}
.tool-go{
  margin-top:auto;font-family:var(--mono);font-size:.68rem;letter-spacing:.16em;
  text-transform:uppercase;font-weight:600;color:var(--primary);
  display:inline-flex;align-items:center;gap:8px;
}
.tool-card:hover .tool-go .arw{transform:translateX(4px)}
.tool-go .arw{transition:transform .3s}

/* ---- 一周菜谱 ---- */
/* 顶部：返回 + 操作 + 每日摄入目标（首屏就能看全） */
.mp-top{padding:calc(var(--nav-h) + 36px) 0 0}
.mp-topbar{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;margin-bottom:18px;
}
.mp-topbar .cs-back{margin:0}
.mp-actions{display:flex;gap:10px;flex-wrap:wrap}
.mp-btn{
  font-family:var(--mono);font-size:.64rem;letter-spacing:.12em;text-transform:uppercase;
  font-weight:600;padding:9px 16px;cursor:pointer;
  background:transparent;color:var(--text);
  border:var(--rule) solid var(--text);border-radius:var(--radius-sm);
  transition:background .25s,color .25s,transform .25s,border-color .25s;
}
.mp-btn:hover{background:var(--text);color:var(--bg);transform:translateY(-2px)}
.mp-btn.primary{background:var(--text);color:var(--bg)}
.mp-btn.primary:hover{background:var(--primary);border-color:var(--primary);color:var(--on-primary)}

.mp-targets{
  border:var(--rule) solid var(--line);border-radius:var(--radius-sm);
  background:var(--bg-soft);padding:12px 16px 14px;
}
.mp-targets-h{
  display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;
  margin-bottom:10px;
}
.mp-targets-h h2{font-size:.9rem;font-weight:600;margin:0;letter-spacing:-.01em}
.mp-hint{font-size:.74rem;color:var(--muted);margin:0;line-height:1.5}

.mp-nutri{display:grid;grid-template-columns:1fr 1fr;gap:14px 28px}
@media (max-width:720px){.mp-nutri{grid-template-columns:1fr;gap:14px}}
.mp-person + .mp-person{padding-left:28px;border-left:1px dashed var(--line)}
@media (max-width:720px){
  .mp-person + .mp-person{padding-left:0;border-left:0;padding-top:14px;border-top:1px dashed var(--line)}
}
.mp-person-h{display:flex;align-items:baseline;gap:10px;margin-bottom:8px}
.mp-person-h b{font-size:.82rem;font-weight:600}
.mp-person-h span{font-family:var(--mono);font-size:.58rem;letter-spacing:.1em;color:var(--muted)}

/* 只给数字，不要进度条 */
.mp-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.mp-stat{display:flex;flex-direction:column;gap:2px;min-width:0}
.mp-stat-l{
  font-family:var(--mono);font-size:.54rem;letter-spacing:.12em;
  text-transform:uppercase;color:var(--muted);
}
.mp-stat-v{font-size:1.06rem;font-weight:600;line-height:1.15;letter-spacing:-.02em}
.mp-stat-s{
  font-style:normal;font-family:var(--mono);font-size:.54rem;
  letter-spacing:.06em;color:var(--muted);
}

/* 周一 ~ 周日 横向 Tab */
.mp-sec{padding:22px 0 72px}
.mp-tabs{
  position:sticky;top:calc(var(--nav-h) + 8px);z-index:30;
  background:var(--bg);
  display:grid;grid-template-columns:repeat(7,1fr);gap:0;
  border:var(--rule) solid var(--line);border-radius:var(--radius-sm);
  overflow:hidden;margin-bottom:16px;
}
@media (max-width:560px){
  .mp-tabs{display:flex;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}
  .mp-tabs::-webkit-scrollbar{display:none}
  .mp-tab{flex:0 0 auto;min-width:76px}
}
.mp-tab{
  appearance:none;cursor:pointer;background:transparent;border:0;
  border-right:var(--rule) solid var(--line);
  padding:9px 6px;display:flex;flex-direction:column;align-items:center;gap:1px;
  color:var(--text);transition:background .2s,color .2s;
}
.mp-tab:last-child{border-right:0}
.mp-tab:hover{background:var(--bg-soft)}
.mp-tab.is-on{background:var(--text);color:var(--bg)}
.mp-tab-d{font-size:.8rem;font-weight:600;letter-spacing:.01em}
.mp-tab-c{font-family:var(--mono);font-size:.54rem;letter-spacing:.08em;opacity:.62}

/* 当天菜单：一整块，三/四餐并排 */
.mp-week{margin-bottom:26px}
@keyframes mpIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.mp-week.is-new .mp-meal{animation:mpIn .34s cubic-bezier(.2,.7,.2,1) both}
.mp-week.is-new .mp-meal:nth-child(2){animation-delay:.05s}
.mp-week.is-new .mp-meal:nth-child(3){animation-delay:.1s}
.mp-week.is-new .mp-meal:nth-child(4){animation-delay:.15s}

.mp-day{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:var(--rule) solid var(--line);border-radius:var(--radius-sm);
  background:var(--bg-soft);overflow:hidden;
}
@media (max-width:900px){.mp-day{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.mp-day{grid-template-columns:1fr}}
.mp-meal{padding:14px 16px 16px;border-right:var(--rule) solid var(--line);scroll-margin-top:calc(var(--nav-h) + 70px)}
.mp-meal:last-child{border-right:0}
@media (max-width:900px){
  .mp-meal:nth-child(2n){border-right:0}
  .mp-meal:nth-child(-n+2){border-bottom:var(--rule) solid var(--line)}
}
@media (max-width:520px){
  .mp-meal{border-right:0;border-bottom:var(--rule) solid var(--line)}
  .mp-meal:last-child{border-bottom:0}
}
.mp-meal-h{display:flex;flex-direction:column;gap:2px;margin-bottom:9px}
.mp-meal-h b{
  font-family:var(--mono);font-size:.6rem;letter-spacing:.16em;
  text-transform:uppercase;font-weight:600;
}
.mp-kcal{font-family:var(--mono);font-size:.54rem;letter-spacing:.06em;color:var(--muted)}
.mp-dishes{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:5px}
.mp-dishes li{
  display:flex;align-items:flex-start;justify-content:space-between;gap:8px;
  font-size:.86rem;line-height:1.5;
}
.mp-swap{
  flex:0 0 auto;width:20px;height:20px;line-height:1;cursor:pointer;opacity:0;
  background:transparent;color:var(--muted);font-size:.72rem;
  border:var(--rule) solid var(--line);border-radius:var(--radius-sm);
  transition:opacity .2s,background .2s,color .2s;
}
.mp-day:hover .mp-swap{opacity:1}
.mp-swap:hover{background:var(--text);color:var(--bg)}
@media (hover:none){.mp-swap{opacity:.55}}

/* 采购清单 */
.mp-panel{
  padding:18px 20px 20px;background:var(--bg-soft);
  border:var(--rule) solid var(--line);border-radius:var(--radius-sm);
  margin-bottom:22px;
}
.mp-panel-head{
  display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;
  margin-bottom:14px;padding-bottom:10px;border-bottom:1px dashed var(--line);
}
.mp-panel-head h2{font-size:.98rem;font-weight:600;margin:0;letter-spacing:-.01em}
.mp-shop{display:grid;grid-template-columns:repeat(2,1fr);gap:16px 30px}
@media (max-width:640px){.mp-shop{grid-template-columns:1fr}}
.mp-cat-h{
  display:flex;align-items:baseline;gap:8px;margin:0 0 7px;padding-bottom:6px;
  border-bottom:1px dashed var(--line);font-size:.8rem;font-weight:600;letter-spacing:.02em;
}
.mp-cat-h span{font-family:var(--mono);font-size:.56rem;letter-spacing:.08em;color:var(--muted);font-weight:400}
.mp-cat-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}
.mp-cat-list li{display:flex;align-items:baseline;gap:8px;font-size:.84rem;line-height:1.5}
.mp-cat-list li i{font-style:normal;font-family:var(--mono);font-size:.6rem;color:var(--primary)}

.mp-note{
  padding:20px 22px;background:var(--bg-soft);
  border:var(--rule) solid var(--line);border-left:3px solid var(--primary);
  border-radius:var(--radius-sm);
}
.mp-note p{margin:0;font-size:.86rem;line-height:1.72;color:var(--text)}
.mp-note p + p{margin-top:12px}
.mp-note strong{font-weight:600}
.mp-note .mp-disclaim{font-size:.78rem;color:var(--muted)}

/* 打印：只留菜单和清单 */
@media print{
  nav,footer,.mp-actions,.mp-tabs,.ph-bg,.scroll-progress,.mp-swap,
  .contact-fab,.back-top,#particles{display:none !important}
  .mp-top{padding:0}
  .mp-tabs{position:static}
  .mp-sec{padding:0}
  .mp-day,.mp-panel,.mp-note,.mp-targets{break-inside:avoid}
}


/* ---- PWA：有新版本时的刷新提示 ---- */
.pwa-update{
  position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);
  z-index:900;padding:12px 22px;cursor:pointer;
  background:var(--text);color:var(--bg);border:var(--rule) solid var(--text);
  border-radius:var(--radius-sm);
  font-family:var(--mono);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;font-weight:600;
  opacity:0;pointer-events:none;
  transition:opacity .35s ease,transform .35s cubic-bezier(.2,.7,.2,1);
  box-shadow:0 6px 24px rgba(0,0,0,.18);
}
.pwa-update.show{opacity:1;transform:translate(-50%,0);pointer-events:auto}
.pwa-update:hover{background:var(--primary);border-color:var(--primary);color:var(--on-primary)}

/* 装成 App 后（standalone）：顶部留出状态栏安全区 */
@media (display-mode:standalone){
  nav{padding-top:env(safe-area-inset-top)}
  body{padding-bottom:env(safe-area-inset-bottom)}
}


/* ============================================================
   case study - long-screenshot scroller (transparent mockup + draggable shot)
   ============================================================ */
.cs-dwrap{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:36px 30px;align-items:start}
.ds{position:relative;margin:0;min-width:0;display:flex;flex-direction:column;gap:12px}
.ds-stage{position:relative;width:100%;max-width:330px;margin:0 auto}
/* screen window sits UNDER the shell; the shell transparent area reveals it */
.ds-screen{
  position:absolute;left:50%;transform:translateX(-50%);
  top:var(--ds-t,4.6%);bottom:var(--ds-b,5.6%);
  width:var(--ds-w,91.4%);z-index:1;overflow:hidden;
  background:#eef0f1;
  border-radius:calc(var(--ds-w,91.4%) * var(--ds-r,.1));
}
.ds-track{
  height:100%;overflow-y:auto;overflow-x:hidden;
  scrollbar-width:none;-ms-overflow-style:none;
  cursor:grab;user-select:none;-webkit-user-select:none;
  touch-action:pan-y;overscroll-behavior:contain;outline:none;
}
.ds-track::-webkit-scrollbar{display:none;width:0;height:0}
.ds-track.grabbing{cursor:grabbing}
.ds-track img{display:block;width:100%;height:auto;pointer-events:none;user-select:none;-webkit-user-drag:none}
.ds-shell{
  position:relative;z-index:2;display:block;width:100%;height:auto;
  pointer-events:none;user-select:none;-webkit-user-drag:none;
  filter:drop-shadow(0 22px 44px rgba(0,0,0,.16));
}
/* drag hint pill */
.ds-hint{
  position:absolute;top:2px;left:50%;transform:translateX(-50%);z-index:5;
  font-family:var(--mono);font-size:.75rem;font-weight:400;letter-spacing:.04em;
  line-height:1;white-space:nowrap;color:var(--muted);
  pointer-events:none;opacity:1;transition:opacity .3s;
}
.ds-hint span{display:none}
.ds-hint i{font-style:normal}
.ds:hover .ds-hint{opacity:1;animation:none}
.ds-hint.off{opacity:0 !important;animation:none}
.ds figcaption{margin:0 auto;max-width:330px;font-size:.8rem;line-height:1.6;color:var(--muted);text-align:center}
/* split layout: wide desktop (left) + narrow phone (right) */
.ds--wide{max-width:620px}
.ds--wide .ds-stage{max-width:620px}
.ds--narrow{max-width:176px}
.ds--narrow .ds-stage{max-width:176px}
.ds--wide figcaption,.ds--narrow figcaption{max-width:none}
@media (max-width:900px){.ds--wide{max-width:420px}}
@media (max-width:560px){.cs-dwrap{grid-template-columns:1fr}}

/* two-device split: wide desktop left + narrow phone right */
.cs-dwrap--split{grid-template-columns:minmax(0,2.1fr) minmax(0,1fr);gap:26px 40px;align-items:center}
.cs-dwrap--split .ds{margin:0}
.cs-dwrap--split .ds--wide{justify-self:end}
.cs-dwrap--split .ds--narrow{justify-self:start;transform:translateY(10px)}
@media (max-width:900px){.cs-dwrap--split{grid-template-columns:1fr}.cs-dwrap--split .ds{margin:0 auto}.cs-dwrap--split .ds--narrow{transform:none}}


/* fullscreen entry button (top-right of each device) */
.ds-full{
  position:absolute;right:12px;bottom:14px;z-index:7;width:30px;height:30px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:var(--card);color:var(--text);
  border-radius:999px;cursor:pointer;padding:0;
  opacity:0;transform:translateY(-2px);
  transition:opacity .25s,transform .25s,background .2s,color .2s,border-color .2s;
}
.ds-full svg{width:13px;height:13px}
.ds:hover .ds-full,.ds-full:focus-visible{opacity:1;transform:none}
.ds-full:hover{background:var(--text);color:var(--bg);border-color:var(--text)}
@media (hover:none){.ds-full{opacity:.9;transform:none}}

/* fullscreen lightbox */
.ds-lb{position:fixed;inset:0;z-index:3000;background:rgba(9,9,11,.97);
  display:flex;flex-direction:column;opacity:0;pointer-events:none;transition:opacity .28s ease}
.ds-lb.open{opacity:1;pointer-events:auto}
.ds-lb-bar{display:flex;align-items:center;justify-content:space-between;padding:12px 18px;
  border-bottom:1px solid rgba(255,255,255,.12)}
.ds-lb-t{font-family:var(--mono);font-size:.66rem;letter-spacing:.16em;text-transform:uppercase;color:rgba(255,255,255,.6)}
.ds-lb-x{background:transparent;border:1px solid rgba(255,255,255,.28);color:#fff;
  font-family:var(--mono);font-size:.66rem;letter-spacing:.1em;text-transform:uppercase;
  padding:8px 16px;border-radius:999px;cursor:pointer;transition:background .2s,color .2s}
.ds-lb-x:hover{background:#fff;color:#111}
.ds-lb-scroll{flex:1;overflow:auto;overscroll-behavior:contain;
  display:flex;justify-content:center;align-items:flex-start;touch-action:pan-x pan-y;outline:none}
.ds-lb-scroll img{display:block;width:auto;height:auto;max-width:100%;margin:0 auto}
.ds-lb-tip{position:absolute;bottom:16px;left:50%;transform:translateX(-50%);
  font-family:var(--mono);font-size:.6rem;letter-spacing:.1em;white-space:nowrap;color:rgba(255,255,255,.55);
  background:rgba(255,255,255,.08);padding:7px 14px;border-radius:999px;pointer-events:none;z-index:2}
@media (min-width:760px){.ds-lb-scroll img{max-width:94vw}}

/* equal-height: phone stage is locked to the mac stage height (desktop split only) */
.ds--narrow .ds-stage.locked{width:auto;max-width:100%;margin:0 auto;align-self:center;aspect-ratio:auto}
.ds--narrow .ds-stage.locked .ds-shell{width:auto;height:100%;max-height:none}

/* mobile: phone shrinks to ~60% of the viewport */
@media (max-width:600px){
  .ds--narrow{max-width:46vw}
  .ds--narrow .ds-stage{max-width:46vw}
  .ds-lb-tip{white-space:normal;width:max-content;max-width:86vw;text-align:center}
}



/* lightbox: framed device clone */
.ds-lb-body{flex:1;display:flex;overflow:auto;padding:20px;min-height:0}
.ds-lb-dev{margin:auto;padding:0;max-width:none;flex:0 0 auto}
.ds-lb-dev .ds-hint,.ds-lb-dev .ds-full{display:none !important}
.ds-lb-dev.ds--wide,.ds-lb-dev.ds--narrow{max-width:none}
.ds-lb-dev .ds-stage{width:auto;max-width:none;margin:0}
.ds-lb-dev.ds--wide .ds-stage{width:min(92vw, calc(74vh * 1.5338));aspect-ratio:658/429;height:auto}
.ds-lb-dev.ds--narrow .ds-stage{width:min(92vw, calc(74vh * .4947));aspect-ratio:612/1237;height:auto}
.ds-lb-dev .ds-shell{width:100%;height:100%;object-fit:fill}
.ds-lb-dev .ds-stage,.ds-lb-dev .ds-track{filter:none;border-radius:0}

.ds-tips{
  display:flex;align-items:center;justify-content:flex-start;gap:8px;
  margin:0 0 30px;padding:0;
  font-family:var(--mono);font-size:.72rem;letter-spacing:.05em;color:var(--muted);text-align:left
}
.ds-tips .ds-tips-ico{font-size:1rem;line-height:1}
@media (max-width:600px){.ds-tips{font-size:.66rem;margin-bottom:22px}.ds-tips span:last-child{max-width:34ch}}

.cs-head{display:flex;align-items:flex-end;justify-content:space-between;gap:36px;margin-top:2px}
.cs-head .cs-sum{flex:1;min-width:0}
.cs-site-btn{
  display:inline-flex;align-items:center;gap:7px;margin:0;padding:8px 15px;flex:0 0 auto;
  border:1px solid var(--primary);border-radius:var(--radius-sm);
  font-family:var(--mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;font-weight:600;
  color:var(--on-primary);background:var(--primary);text-decoration:none;
  transition:transform .22s cubic-bezier(.2,.7,.2,1),box-shadow .22s,filter .2s;
}
.cs-site-btn:hover{transform:translateY(-1px);box-shadow:0 6px 16px rgba(0,0,0,.12)}
@media (max-width:760px){.cs-head{flex-direction:column;align-items:flex-start;gap:20px}.cs-site-btn{margin:0}}
.cs-site-arw{font-size:.9rem;line-height:1}

.cs-impact{display:grid;grid-template-columns:1fr;gap:14px}
.cs-impact-item{
  padding:26px 24px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:var(--card);display:flex;flex-direction:column;gap:12px;
  transition:transform .3s cubic-bezier(.2,.7,.2,1),box-shadow .3s,border-color .3s;
}
.cs-impact-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);border-color:var(--text)}
.cs-impact-item h3{margin:0;font-size:1.05rem;line-height:1.4;font-weight:600;letter-spacing:-.01em}
.cs-impact-item p{margin:0;font-size:.95rem;line-height:1.8;color:var(--muted)}
@media (max-width:820px){.cs-impact{grid-template-columns:1fr}}

.cs-shot{margin:0}
.cs-shot img{width:100%;height:auto;display:block;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--card)}

.cs-shotgrid{display:flex;flex-direction:column;gap:0}
.cs-shotgrid-row{display:grid;grid-template-columns:720fr 1314fr;gap:0}
.cs-shotgrid-row .cs-shot{height:auto;margin:0;display:block}
.cs-shotgrid-row img{width:100%;height:auto}
.cs-shotgrid .cs-shot{margin:0}
.cs-shotgrid img{width:100%;height:auto;display:block;border:0;border-radius:0;background:transparent}
.cs-shotgrid > .cs-shot img{width:100%}
@media (max-width:640px){.cs-shotgrid-row{grid-template-columns:1fr}}

#sec-services .cs-intro{max-width:none}

/* ---- 可点击文字链接：hover 下划线从左向右流动 ---- */
/* 只作用于「文字型链接」；按钮/卡片/导航等已有自身 hover 反馈的不叠加 */
a:where(:not(.logo):not(.chip):not(.hero-link):not(.sec-link):not(.card):not([class*="btn"]):not(.tag):not(.lang-btn):not(.theme-btn):not(.cs-back):not(.ds-full):not(.cs-nav-inner a):not(.nav-links a):not(.mobile-menu a):not(.cs-side-nav a):not(.cs-mnav a):not(.art-nav a):not(.art-card):not(.social):not(.cm-quick a)){
  background-image:linear-gradient(currentColor,currentColor);
  background-repeat:no-repeat;background-size:0 1px;background-position:0 100%;
  transition:background-size .3s cubic-bezier(.25,.7,.2,1);
}
a:where(:not(.logo):not(.chip):not(.hero-link):not(.sec-link):not(.card):not([class*="btn"]):not(.tag):not(.lang-btn):not(.theme-btn):not(.cs-back):not(.ds-full):not(.cs-nav-inner a):not(.nav-links a):not(.mobile-menu a):not(.cs-side-nav a):not(.cs-mnav a):not(.art-nav a):not(.art-card):not(.social):not(.cm-quick a)):hover,
a:where(:not(.logo):not(.chip):not(.hero-link):not(.sec-link):not(.card):not([class*="btn"]):not(.tag):not(.lang-btn):not(.theme-btn):not(.cs-back):not(.ds-full):not(.cs-nav-inner a):not(.nav-links a):not(.mobile-menu a):not(.cs-side-nav a):not(.cs-mnav a):not(.art-nav a):not(.art-card):not(.social):not(.cm-quick a)):focus-visible{
  background-size:100% 1px;
}

/* 列表卡片：划过标题 / View 时文字变色，提示可点击 */
.card h3,.card .card-link,.post h3,.post-card h3{
  transition:color .22s ease;
}
.card h3:hover,.card .card-link:hover,.post h3:hover,.post-card h3:hover{
  color:#4B6B8A;
}