/* ============================================================
   PDF 实用助手 · 界面样式 v2
   深色侧栏 + 浅色工作台｜渐变强调色 · 分级阴影 · 微交互
   PC 优先，窄屏自动折叠
   ============================================================ */

:root{
  /* —— 墨色：带蓝调，比纯黑通透 —— */
  --ink:#0A1224;
  --ink-1:#101B33;
  --ink-2:#16233F;
  --ink-3:#1E2E4E;

  /* —— 强调色：饱和电光蓝 → 紫，用于渐变 —— */
  --accent:#1B4DE4;
  --accent-deep:#123AB8;
  --accent-2:#6A4FE8;
  --accent-soft:#EBEFFE;
  --accent-grad:linear-gradient(135deg,#1B4DE4 0%,#6A4FE8 100%);
  --accent-grad-2:linear-gradient(135deg,#1740CC 0%,#5F44DC 100%);

  /* —— 表面 —— */
  --paper:#FFFFFF;
  --mist:#F4F6FC;
  --line:#E2E7F2;
  --line-soft:#EFF2F9;
  --line-input:#D9E0EE;

  /* —— 文字 —— */
  --text:#0A1224;
  --muted:#69748C;
  --muted-2:#98A2B6;

  /* —— 状态 —— */
  --ok:#0E8462;
  --ok-soft:#E4F7F0;
  --warn:#C2480F;
  --warn-soft:#FDEEE6;
  --danger:#C22B2B;

  /* —— 形状 —— */
  --radius:14px;
  --radius-sm:10px;
  --radius-lg:18px;
  --sidebar-w:288px;

  /* —— 阴影：带蓝调，比纯黑高级 —— */
  --sh-xs:0 1px 2px rgba(13,27,56,.05);
  --sh-sm:0 2px 6px rgba(13,27,56,.05), 0 1px 2px rgba(13,27,56,.04);
  --sh-md:0 12px 28px -10px rgba(13,27,56,.16), 0 2px 8px rgba(13,27,56,.05);
  --sh-lg:0 28px 60px -18px rgba(13,27,56,.24);
  --sh-glow:0 12px 26px -10px rgba(27,77,228,.5);

  /* —— 动效曲线 —— */
  --ease:cubic-bezier(.22,.61,.36,1);
  --ease-out:cubic-bezier(.16,1,.3,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--text);
  font-size:14px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  /* 环境光斑：让浅底不死板 */
  background-color:var(--mist);
  background-image:
    radial-gradient(900px 560px at 80% -10%, rgba(106,79,232,.13), transparent 66%),
    radial-gradient(720px 480px at 26% 108%, rgba(27,77,228,.09), transparent 62%);
  background-attachment:fixed;
  display:flex;
  min-height:100vh;
}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:none;background:none}
ul{list-style:none}
/* 必须显式声明，否则 .modal 等元素上的 display 会覆盖 hidden 属性 */
[hidden]{display:none !important}

::selection{background:rgba(27,77,228,.16)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}

/* 滚动条 */
*::-webkit-scrollbar{width:10px;height:10px}
*::-webkit-scrollbar-track{background:transparent}
*::-webkit-scrollbar-thumb{background:#CFD8EA;border-radius:6px;border:3px solid transparent;background-clip:content-box}
*::-webkit-scrollbar-thumb:hover{background:#B4C1DC;background-clip:content-box}

/* ================= 侧边栏 ================= */
.sidebar{
  width:var(--sidebar-w);
  flex:none;
  /* 三层叠加：顶部蓝光 + 底部紫光 + 深色纵向渐变 */
  background-image:
    radial-gradient(520px 340px at 50% -6%, rgba(27,77,228,.34), transparent 70%),
    radial-gradient(460px 320px at 104% 102%, rgba(106,79,232,.22), transparent 72%),
    linear-gradient(180deg,#101B33 0%,#0A1224 56%,#080F1E 100%);
  background-color:#0A1224;
  color:#fff;
  display:flex;
  flex-direction:column;
  position:sticky;
  top:0;
  height:100vh;
  box-shadow:1px 0 0 rgba(255,255,255,.05), 12px 0 40px -20px rgba(10,18,36,.6);
}

.brand{display:flex;align-items:center;gap:12px;padding:22px 22px 18px}
.brand-mark{
  width:42px;height:42px;flex:none;border-radius:12px;
  background-image:var(--accent-grad);
  color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;letter-spacing:.5px;
  box-shadow:0 8px 20px -8px rgba(27,77,228,.95), inset 0 1px 0 rgba(255,255,255,.3);
}
.brand-text b{display:block;font-size:15px;font-weight:700;letter-spacing:.2px}
.brand-text span{display:block;font-size:11.5px;color:#8FA0BD;letter-spacing:.3px;margin-top:1px}

.search-wrap{padding:0 22px 16px}
.search-wrap input{
  width:100%;padding:10px 13px;border-radius:10px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.1);
  color:#fff;font-size:13px;outline:none;
  transition:border-color .18s var(--ease), background .18s var(--ease), box-shadow .18s var(--ease);
}
.search-wrap input::placeholder{color:#7E90AF}
.search-wrap input:hover{background:rgba(255,255,255,.085)}
.search-wrap input:focus{
  border-color:rgba(106,79,232,.85);
  background:rgba(255,255,255,.1);
  box-shadow:0 0 0 3px rgba(27,77,228,.28);
}

.nav{flex:1;overflow-y:auto;padding:2px 12px 16px}
.nav::-webkit-scrollbar{width:8px}
.nav::-webkit-scrollbar-thumb{background:rgba(255,255,255,.13);border-radius:4px;border:2px solid transparent;background-clip:content-box}

.nav-group{margin-bottom:4px}
.nav-group>button{
  width:100%;display:flex;align-items:center;gap:9px;
  padding:9px 10px;border-radius:9px;color:#A3B2CB;
  font-size:12px;font-weight:700;letter-spacing:.9px;
  transition:background .16s var(--ease), color .16s var(--ease);
}
.nav-group>button::before{
  content:"";width:7px;height:7px;flex:none;border-radius:2px;
  background:var(--mcolor,#5B76B8);
  box-shadow:0 0 0 3px rgba(255,255,255,.055);
}
.nav-group>button:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-group .arrow{margin-left:auto;font-size:9px;transition:transform .22s var(--ease);color:#5E7391}
.nav-group.open .arrow{transform:rotate(90deg)}
.nav-items{display:none;padding:2px 0 8px}
.nav-group.open .nav-items{display:block;animation:navIn .18s var(--ease-out)}
@keyframes navIn{from{opacity:0;transform:translateY(-3px)}to{opacity:1;transform:none}}

.nav-items button{
  width:100%;display:flex;align-items:center;gap:9px;
  padding:8px 10px;border-radius:9px;color:#C2CEE0;font-size:13.5px;text-align:left;
  transition:background .15s var(--ease), color .15s var(--ease), transform .15s var(--ease-out);
}
.nav-items button svg{width:16px;height:16px;flex:none;opacity:.78}
.nav-items button span{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.nav-items button:hover{background:rgba(255,255,255,.075);color:#fff;transform:translateX(2px)}
.nav-items button:hover svg{opacity:1}
.nav-items button.active{
  background-image:linear-gradient(100deg,rgba(27,77,228,.98),rgba(106,79,232,.9));
  color:#fff;font-weight:600;
  box-shadow:0 8px 18px -10px rgba(27,77,228,.95), inset 0 1px 0 rgba(255,255,255,.18);
}
.nav-items button.active svg{opacity:1}
.nav-items button.hide{display:none}
.nav-empty{padding:10px 12px;color:#7E90AF;font-size:12.5px}

.sidebar-foot{padding:15px 18px 20px;border-top:1px solid rgba(255,255,255,.09);background:rgba(255,255,255,.015)}
.quota{font-size:12px;color:#8FA0BD;margin-bottom:9px;line-height:1.5}
.quota b{color:#fff;font-weight:700}
.link-btn{font-size:12px;color:#8AA4C8;text-decoration:underline;text-underline-offset:3px;padding:0;transition:color .16s}
.link-btn:hover{color:#fff}

.sidebar-mask{display:none}

/* ================= 主区 ================= */
.main{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{
  height:60px;flex:none;display:flex;align-items:center;gap:14px;
  padding:0 26px;
  background:rgba(255,255,255,.82);
  backdrop-filter:blur(14px) saturate(1.6);
  -webkit-backdrop-filter:blur(14px) saturate(1.6);
  border-bottom:1px solid rgba(226,231,242,.9);
  position:sticky;top:0;z-index:20;
}
.menu-btn{display:none;width:34px;height:34px;flex-direction:column;justify-content:center;gap:4px;align-items:center;border-radius:9px}
.menu-btn span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px}
.menu-btn:hover{background:var(--mist)}
.crumb{font-size:13.5px;color:var(--muted);font-weight:500;cursor:pointer;user-select:none;padding:4px 8px 4px 0;transition:color .16s}
.crumb::before{content:"‹ ";font-size:16px;color:#C2CCE0;margin-right:3px}
.crumb:hover{color:var(--accent)}
.crumb:hover::before{color:var(--accent)}
.topbar-right{margin-left:auto}
.pill{
  font-size:12px;padding:5px 12px;border-radius:20px;
  background:#fff;color:var(--muted);border:1px solid var(--line);
  box-shadow:var(--sh-xs);
}

.workspace{flex:1;padding:28px 26px;max-width:1040px;width:100%;margin:0 auto;position:relative;z-index:1}

/* ================= 首页 Hero ================= */
.empty{padding:26px 0 40px}
.hero{margin-bottom:30px}
.hero-pill{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12px;font-weight:600;letter-spacing:.2px;
  color:#2B3A5C;
  background:rgba(255,255,255,.9);
  border:1px solid var(--line);
  border-radius:999px;padding:5px 13px 5px 10px;
  box-shadow:var(--sh-sm);
  margin-bottom:18px;
}
.hero-pill::before{
  content:"";width:7px;height:7px;border-radius:50%;
  background-image:var(--accent-grad);
  box-shadow:0 0 0 3px rgba(27,77,228,.14);
}
.empty h1{
  font-size:42px;line-height:1.2;font-weight:800;letter-spacing:-1.4px;
  margin-bottom:14px;
}
.empty h1 em{
  font-style:normal;
  background-image:linear-gradient(100deg,#1B4DE4 0%,#6A4FE8 55%,#B93A86 100%);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.empty p{color:var(--muted);max-width:600px;margin-bottom:30px;font-size:15px;line-height:1.72}

/* ================= 首页高频功能区（3 行 2 列） =================
   扁平商务风：白底 + 细边 + 模块色仅做点睛，不做渐变堆砌 */
.hot{margin-bottom:30px}
.hot-head{
  display:flex;align-items:baseline;gap:10px;margin-bottom:13px;
}
.hot-head h2{
  display:flex;align-items:center;gap:9px;
  font-size:15px;font-weight:750;letter-spacing:.3px;color:#26324C;
}
.hot-head h2 i{
  width:9px;height:9px;border-radius:3px;display:block;
  background-image:var(--accent-grad);
  box-shadow:0 0 0 3px rgba(27,77,228,.12);
}
.hot-head span{font-size:12.5px;color:var(--muted-2)}
.hot-grid{
  display:grid;grid-template-columns:repeat(2,1fr);gap:11px;
}
.hot-cell{
  position:relative;display:flex;align-items:center;gap:14px;
  text-align:left;padding:16px 18px;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--sh-xs);
  transition:transform .22s var(--ease-out), box-shadow .22s var(--ease-out), border-color .22s var(--ease);
}
.hot-cell::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  border-radius:0 3px 3px 0;
  background:var(--mcolor,#1B4DE4);
  opacity:.85;
}
.hot-cell:hover{
  transform:translateY(-3px);
  border-color:#D4DCF0;
  box-shadow:var(--sh-md);
}
.hot-cell:active{transform:translateY(-1px) scale(.997)}
.hot-no{
  font-size:11px;font-weight:800;letter-spacing:.5px;
  color:var(--muted-2);
  font-variant-numeric:tabular-nums;
  align-self:flex-start;
  padding-top:2px;
}
.hot-ic{
  width:46px;height:46px;flex:none;border-radius:13px;
  display:flex;align-items:center;justify-content:center;
  background-image:linear-gradient(150deg,var(--mtint,#E7EDFD) 0%,#fff 140%);
  color:var(--mcolor,#1B4DE4);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.75), 0 2px 7px rgba(13,27,56,.055);
  transition:transform .24s var(--ease-out);
}
.hot-cell:hover .hot-ic{transform:scale(1.06)}
.hot-ic svg{width:24px;height:24px;display:block}
.hot-txt{min-width:0;flex:1}
.hot-txt b{
  display:block;font-size:14.5px;font-weight:700;letter-spacing:-.1px;margin-bottom:3px;
}
.hot-desc{
  display:block;font-size:12px;color:var(--muted);line-height:1.5;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.hot-go{
  flex:none;font-size:15px;color:#C2CCE0;
  transition:transform .2s var(--ease-out), color .2s var(--ease);
}
.hot-cell:hover .hot-go{transform:translateX(3px);color:var(--mcolor,#1B4DE4)}

/* 功能卡片网格：分类详情 / 最近用过 / 搜索结果共用一张卡打天下 */
.og-row{display:grid;grid-template-columns:repeat(4,1fr);gap:11px}
.og-row.wide{grid-template-columns:repeat(auto-fill,minmax(186px,1fr))}

.og-cell{
  position:relative;display:block;text-align:left;overflow:hidden;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:15px 14px 16px;
  box-shadow:var(--sh-xs);
  transition:transform .22s var(--ease-out), box-shadow .22s var(--ease-out), border-color .22s var(--ease);
}
/* 顶部模块色光条，悬停时点亮 */
.og-cell::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background-image:linear-gradient(90deg,var(--mcolor,#1B4DE4) 0%,transparent 88%);
  opacity:0;transition:opacity .22s var(--ease);
}
.og-cell:hover{
  transform:translateY(-3px);
  border-color:#D4DCF0;
  box-shadow:var(--sh-md);
}
.og-cell:hover::before{opacity:1}
.og-cell:active{transform:translateY(-1px) scale(.995)}

.og-ic{
  width:42px;height:42px;border-radius:13px;display:flex;align-items:center;
  justify-content:center;margin-bottom:12px;
  background-image:linear-gradient(150deg,var(--mtint,#E7EDFD) 0%,#fff 132%);
  color:var(--mcolor,#1B4DE4);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.75), 0 2px 7px rgba(13,27,56,.055);
  transition:transform .24s var(--ease-out);
}
.og-ic svg{width:22px;height:22px;display:block}
.og-cell:hover .og-ic{transform:scale(1.07) rotate(-2deg)}
.og-cell b{display:block;font-size:14px;font-weight:650;margin-bottom:4px;letter-spacing:-.1px}
.og-desc{
  font-size:12px;color:var(--muted);line-height:1.55;display:-webkit-box;
  -webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}

/* ================= 全部功能：按模块分区，每行 4 个图标铺开 ================= */
.all{margin-bottom:8px}
.op-grid{display:block}
.og-sec{margin-bottom:26px}
.og-head{
  display:flex;align-items:center;gap:9px;margin-bottom:13px;
  font-size:13px;font-weight:700;color:#3B4761;letter-spacing:.5px;
}
.og-head i{width:9px;height:9px;border-radius:3px;display:block;box-shadow:0 0 0 3px rgba(13,27,56,.045)}
.og-head em{font-style:normal;font-weight:500;color:var(--muted-2);font-size:12px}

.cd-empty{
  text-align:center;color:var(--muted-2);font-size:13px;line-height:1.85;padding:26px 10px;
}
.cd-empty b{display:block;font-size:14px;color:var(--muted);font-weight:650;margin-bottom:4px}

/* ================= 记录页 / 最近页 ================= */
.page{padding:26px 0 40px}
.page-head{margin-bottom:24px}
.page-head h1{font-size:29px;font-weight:800;letter-spacing:-.8px;margin:6px 0 8px}
.page-head p{color:var(--muted);font-size:14px;line-height:1.72;max-width:640px}
.page-head p b{color:var(--ink);font-weight:650}
.page-tools{display:flex;align-items:center;gap:12px;margin-top:15px}
.page-stat{font-size:12.5px;color:var(--muted-2)}

/* 记录卡片 */
.rec-day{
  font-size:12px;font-weight:700;color:#3B4761;letter-spacing:.6px;
  margin:20px 0 10px;padding-left:2px;
}
.rec-day:first-child{margin-top:0}
.rec-card{
  display:flex;align-items:flex-start;gap:14px;
  padding:14px 16px;margin-bottom:9px;
  background:var(--paper);border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--sh-xs);
  transition:border-color .18s var(--ease), box-shadow .18s var(--ease);
}
.rec-card:hover{border-color:#D4DCF0;box-shadow:var(--sh-sm)}
.rec-card.dead{background:#FBFCFE;color:var(--muted-2)}
.rec-ic{
  width:38px;height:38px;flex:none;border-radius:11px;
  background-image:linear-gradient(150deg,var(--mtint,#E7EDFD) 0%,#fff 140%);
  color:var(--mcolor,#1B4DE4);
  display:flex;align-items:center;justify-content:center;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.75);
}
.rec-card.dead .rec-ic{filter:grayscale(.55);opacity:.75}
.rec-ic svg{width:20px;height:20px;display:block}
.rec-main{flex:1;min-width:0}
.rec-top{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.rec-top b{font-size:14px;font-weight:700;letter-spacing:-.1px}
.rec-card.dead .rec-top b{color:var(--muted);font-weight:650}
.rec-time{font-size:12px;color:var(--muted-2)}
.rec-files{margin-top:9px;display:flex;flex-direction:column;gap:6px}
.rec-file{
  display:flex;align-items:center;gap:9px;
  background:var(--mist);border:1px solid var(--line-soft);
  border-radius:9px;padding:8px 11px;
}
.rec-file.none{color:var(--muted-2);font-size:12.5px;background:none;border-style:dashed}
.rec-file b{
  flex:1;min-width:0;font-size:12.5px;font-weight:600;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.rec-file span{font-size:11.5px;color:var(--muted-2);font-variant-numeric:tabular-nums}
.rec-dl{
  flex:none;font-size:12px;font-weight:650;color:#fff;background:var(--ok);
  padding:4px 13px;border-radius:7px;
  box-shadow:0 6px 14px -6px rgba(14,132,98,.8);
  transition:background .16s var(--ease), transform .16s var(--ease-out);
}
.rec-dl:hover{background:#0B6E52;transform:translateY(-1px)}
.rec-tip{margin-top:9px;font-size:12px;color:var(--warn);line-height:1.6}
.rec-again{
  flex:none;font-size:12px;color:var(--muted);padding:6px 13px;border-radius:8px;
  border:1px solid var(--line);background:var(--paper);align-self:center;
  transition:border-color .16s var(--ease), color .16s var(--ease);
}
.rec-again:hover{border-color:var(--accent);color:var(--accent)}

/* ================= 侧栏视图切换 ================= */
.switchset{display:flex;gap:6px;padding:0 16px 14px}
.sw-item{
  flex:1;display:flex;flex-direction:column;align-items:center;gap:5px;
  padding:9px 4px;border-radius:10px;
  background:rgba(255,255,255,.045);
  border:1px solid rgba(255,255,255,.07);
  color:#9FB0C9;font-size:11.5px;font-weight:600;
  transition:background .16s var(--ease), color .16s var(--ease), border-color .16s var(--ease);
}
.sw-item svg{width:17px;height:17px;display:block}
.sw-item:hover{background:rgba(255,255,255,.08);color:#fff}
.sw-item.active{
  color:#fff;
  background-image:linear-gradient(135deg,rgba(27,77,228,.98),rgba(106,79,232,.9));
  border-color:transparent;
  box-shadow:0 8px 18px -10px rgba(27,77,228,.9), inset 0 1px 0 rgba(255,255,255,.2);
}

/* ================= 底部导航（窄屏） ================= */
.tabbar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:40;
  padding:6px 8px calc(6px + env(safe-area-inset-bottom));
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(16px) saturate(1.6);
  -webkit-backdrop-filter:blur(16px) saturate(1.6);
  border-top:1px solid rgba(226,231,242,.9);
  box-shadow:0 -8px 26px -14px rgba(13,27,56,.22);
}
.tab{
  flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;
  padding:6px 0;border-radius:10px;
  color:var(--muted-2);font-size:11px;font-weight:600;
  transition:color .16s var(--ease);
}
.tab svg{width:21px;height:21px;display:block}
.tab.active{color:var(--accent)}
.tab.active svg{stroke-width:2.1}
.tab:active{background:rgba(27,77,228,.06)}

/* 窄屏（手机 / 小程序 web-view）：图标居中、去掉描述，做成卡片里的九宫格 */
@media (max-width:820px){
  .empty{padding:8px 0 30px}
  .hero-pill{font-size:11.5px;margin-bottom:14px}
  .empty h1{font-size:28px;letter-spacing:-.8px;margin-bottom:10px}
  .empty p{font-size:14px;margin-bottom:22px}
  /* 高频区：手机上保持 3 行 2 列，收窄留白 */
  .hot{margin-bottom:20px}
  .hot-head{margin-bottom:9px}
  .hot-head h2{font-size:13px}
  .hot-head span{font-size:11.5px}
  .hot-grid{gap:8px}
  .hot-cell{padding:12px 13px;gap:10px;border-radius:13px}
  .hot-cell::before{top:10px;bottom:10px}
  .hot-no{display:none}
  .hot-ic{width:40px;height:40px;border-radius:11px}
  .hot-ic svg{width:21px;height:21px}
  .hot-txt b{font-size:13px;margin-bottom:2px}
  .hot-desc{display:none}
  .hot-go{display:none}
  /* 全部功能：手机上分区收紧一点，仍是每行 4 个图标 */
  .all{margin-bottom:6px}
  .og-sec{margin-bottom:18px}
  .og-head{font-size:12px;margin-bottom:9px}
  /* 记录页：按钮换行，避免右侧被挤扁 */
  .rec-card{flex-wrap:wrap;gap:11px}
  .rec-again{width:100%;padding:8px}
  .og-row,.og-row.wide{
    background:var(--paper);border:1px solid var(--line-soft);
    border-radius:16px;padding:16px 6px 6px;
    gap:2px;box-shadow:var(--sh-sm);
    grid-template-columns:repeat(4,1fr);
  }
  .og-cell{
    border:none;background:none;padding:8px 3px 16px;text-align:center;
    box-shadow:none;border-radius:12px;
  }
  .og-cell::before{display:none}
  .og-cell:hover{transform:none;box-shadow:none;background:rgba(27,77,228,.05);border-color:transparent}
  .og-cell:active{background:rgba(27,77,228,.09)}
  .og-ic{width:54px;height:54px;border-radius:16px;margin:0 auto 9px}
  .og-ic svg{width:27px;height:27px}
  .og-cell:hover .og-ic{transform:none}
  .og-cell b{font-size:12px;font-weight:500;line-height:1.35;margin:0;text-align:center}
  .og-desc{display:none}
}

/* ================= 工作区 ================= */
.work{display:block}
.op-head{margin-bottom:24px}
.op-head h1{font-size:29px;font-weight:800;letter-spacing:-.8px;margin-bottom:7px}
.op-head p{color:var(--muted);font-size:14.5px;max-width:660px;line-height:1.7}
.op-note{
  margin-top:13px;padding:11px 15px;border-radius:11px;font-size:13px;
  background:var(--accent-soft);color:#12317F;
  border:1px solid rgba(27,77,228,.13);
  border-left:3px solid var(--accent);
  line-height:1.65;
}
.op-note.warn{background:var(--warn-soft);color:#8A360F;border-color:rgba(194,72,15,.14);border-left-color:var(--warn)}

/* 步骤卡 */
.step{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:24px 26px;margin-bottom:16px;
  box-shadow:var(--sh-sm);
}
.step-head{display:flex;align-items:center;gap:11px;margin-bottom:18px}
.step-no{
  width:26px;height:26px;flex:none;border-radius:9px;
  background-image:var(--accent-grad);
  color:#fff;font-size:12px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px -6px rgba(27,77,228,.85), inset 0 1px 0 rgba(255,255,255,.28);
}
.step-head h2{font-size:16.5px;font-weight:700;letter-spacing:-.2px}
.step-hint{margin-left:auto;font-size:12.5px;color:var(--muted-2);text-align:right}

/* 上传区 */
.dropzone{
  position:relative;
  border:1.5px dashed #C7D3EC;border-radius:var(--radius);
  background-image:linear-gradient(180deg,#FAFBFF 0%,#F3F7FE 100%);
  padding:30px 26px;text-align:center;cursor:pointer;
  transition:border-color .2s var(--ease), background .2s var(--ease), transform .2s var(--ease-out), box-shadow .2s var(--ease-out);
}
.dropzone:hover{
  border-color:var(--accent);
  background-image:linear-gradient(180deg,#F4F7FF 0%,#EBF1FF 100%);
  box-shadow:inset 0 0 0 1px rgba(27,77,228,.06);
}
.dropzone.over{
  border-color:var(--accent);
  background-image:linear-gradient(180deg,#ECF1FF 0%,#E1EAFF 100%);
  box-shadow:0 0 0 4px rgba(27,77,228,.11);
  transform:scale(1.004);
}
.dropzone-inner{display:flex;flex-direction:column;align-items:center;gap:9px;color:var(--muted)}
.dropzone-inner>svg{
  width:52px;height:52px;padding:14px;border-radius:16px;
  color:#fff;
  background-image:var(--accent-grad);
  box-shadow:0 10px 22px -10px rgba(27,77,228,.85), inset 0 1px 0 rgba(255,255,255,.28);
  transition:transform .26s var(--ease-out), box-shadow .26s var(--ease-out);
}
.dropzone:hover .dropzone-inner>svg{transform:translateY(-3px) scale(1.04);box-shadow:0 16px 28px -12px rgba(27,77,228,.9), inset 0 1px 0 rgba(255,255,255,.3)}
.dropzone-inner b{font-size:15px;color:var(--ink);font-weight:650}
.dropzone-inner span{font-size:12.5px;color:var(--muted-2)}

/* 文件列表 */
.filelist{margin-top:16px;display:flex;flex-direction:column;gap:9px}
.filelist:empty{display:none}
.file-row{
  display:flex;align-items:center;gap:12px;
  border:1px solid var(--line);border-radius:12px;padding:11px 13px;
  background:var(--paper);box-shadow:var(--sh-xs);
  transition:border-color .18s var(--ease), box-shadow .18s var(--ease), transform .18s var(--ease-out);
}
.file-row:hover{border-color:#CFD9EC;box-shadow:var(--sh-sm);transform:translateY(-1px)}
.file-row.dragging{opacity:.45;border-style:dashed}
.file-row.drop-target{border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 0 3px rgba(27,77,228,.12)}
.file-idx{
  width:23px;height:23px;flex:none;border-radius:7px;
  background-image:linear-gradient(150deg,#EEF2FB,#E4EAF8);
  color:var(--muted);font-size:11.5px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.file-thumb{
  width:40px;height:52px;flex:none;border-radius:6px;border:1px solid var(--line);
  background-color:#F7F9FD;background-position:center;background-size:cover;background-repeat:no-repeat;
  display:flex;align-items:center;justify-content:center;
  font-size:10px;color:var(--muted-2);font-weight:700;
  box-shadow:var(--sh-xs);
}
.file-info{min-width:0;flex:1}
.file-info b{display:block;font-size:13.5px;font-weight:650;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.file-info span{font-size:12px;color:var(--muted-2)}
.file-tools{display:flex;gap:6px;flex:none}
.btn-mini{
  font-size:12px;padding:5px 11px;border-radius:8px;
  border:1px solid var(--line);background:var(--paper);color:var(--muted);
  transition:border-color .16s var(--ease), color .16s var(--ease), background .16s var(--ease);
}
.btn-mini:hover{border-color:var(--accent);color:var(--accent);background:#F7F9FF}
.btn-mini.danger:hover{border-color:var(--danger);color:var(--danger);background:#FDF6F6}

/* 表单 */
.form{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:17px 20px}
.field{display:flex;flex-direction:column;gap:7px;min-width:0}
.field.full{grid-column:1/-1}
.field label{font-size:13px;font-weight:650;color:#26324C;letter-spacing:.1px}
.field .tip{font-size:12px;color:var(--muted-2);line-height:1.55}
.field input[type=text],.field input[type=number],.field input[type=password],.field select,.field textarea{
  width:100%;padding:10px 12px;border:1px solid var(--line-input);border-radius:10px;
  background:var(--paper);outline:none;
  transition:border-color .16s var(--ease), box-shadow .16s var(--ease), background .16s var(--ease);
}
.field input[type=text]:hover,.field input[type=number]:hover,.field input[type=password]:hover,
.field select:hover,.field textarea:hover{border-color:#C6D1E8}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--accent);
  box-shadow:0 0 0 3.5px rgba(27,77,228,.13);
}
.field input[type=color]{
  width:100%;height:42px;padding:3px;border:1px solid var(--line-input);border-radius:10px;
  background:var(--paper);cursor:pointer;
}
.field .check{display:flex;align-items:center;gap:9px;font-size:13.5px;font-weight:500}
.field .check input{width:17px;height:17px;accent-color:var(--accent);cursor:pointer}
.field .row2{display:flex;gap:10px}
.field .row2>*{flex:1}

/* 执行 */
.actions{display:flex;gap:11px;align-items:center}
.btn-primary{
  position:relative;
  background-image:var(--accent-grad);
  color:#fff;font-weight:700;font-size:14.5px;letter-spacing:.2px;
  padding:12px 32px;border-radius:11px;
  box-shadow:var(--sh-glow);
  transition:transform .18s var(--ease-out), box-shadow .18s var(--ease-out), filter .18s var(--ease);
}
.btn-primary:hover:not(:disabled){
  background-image:var(--accent-grad-2);
  transform:translateY(-1.5px);
  box-shadow:0 18px 34px -12px rgba(27,77,228,.62);
  filter:saturate(1.08);
}
.btn-primary:active:not(:disabled){transform:translateY(0);box-shadow:var(--sh-glow)}
.btn-primary:disabled{
  background-image:none;background-color:#EDF1F9;
  color:#A2ACC2;box-shadow:inset 0 0 0 1px #DFE5F1;
  cursor:not-allowed;
}
.btn-ghost{
  padding:12px 20px;border-radius:11px;border:1px solid var(--line);
  color:var(--muted);background:var(--paper);font-size:14px;font-weight:500;
  transition:border-color .16s var(--ease), color .16s var(--ease), background .16s var(--ease);
}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);background:#F7F9FF}

.progress-wrap{margin-top:20px}
.progress-bar{height:8px;border-radius:6px;background:var(--line-soft);overflow:hidden;box-shadow:inset 0 1px 2px rgba(13,27,56,.05)}
.progress-bar i{
  position:relative;display:block;height:100%;width:0;border-radius:6px;overflow:hidden;
  background-image:var(--accent-grad);
  transition:width .35s var(--ease-out);
}
.progress-bar i::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(90deg,transparent,rgba(255,255,255,.6),transparent);
  animation:sheen 1.5s linear infinite;
}
@keyframes sheen{from{transform:translateX(-100%)}to{transform:translateX(100%)}}
.progress-text{margin-top:9px;font-size:13px;color:var(--muted)}

.alert{
  margin-top:16px;padding:13px 16px;border-radius:11px;font-size:13.5px;
  background:var(--warn-soft);color:#8A360F;
  border:1px solid rgba(194,72,15,.14);border-left:3px solid var(--warn);
  white-space:pre-wrap;line-height:1.65;
}

.results{margin-top:22px;border-top:1px solid var(--line-soft);padding-top:20px}
.results h3{font-size:14.5px;font-weight:700;margin-bottom:13px;letter-spacing:-.1px}
.result-list{display:flex;flex-direction:column;gap:9px}
.result-row{
  display:flex;align-items:center;gap:12px;
  border:1px solid #C3E9DB;border-radius:12px;padding:12px 15px;
  background-image:linear-gradient(100deg,#EAF8F3 0%,#E2F6EF 100%);
  box-shadow:var(--sh-xs);
}
.result-row .rname{flex:1;min-width:0;font-size:13.5px;font-weight:650;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.result-row .rsize{font-size:12px;color:var(--muted)}
.btn-dl{
  background-color:var(--ok);color:#fff;font-weight:650;font-size:13px;
  padding:8px 19px;border-radius:9px;white-space:nowrap;
  box-shadow:0 8px 18px -8px rgba(14,132,98,.75);
  transition:transform .16s var(--ease-out), background .16s var(--ease), box-shadow .16s var(--ease);
}
.btn-dl:hover{background-color:#0B6E52;transform:translateY(-1px);box-shadow:0 12px 22px -8px rgba(14,132,98,.8)}
.result-text{
  margin-top:15px;background:#F8FAFE;border:1px solid var(--line);border-radius:12px;
  padding:15px 17px;font-size:13px;white-space:pre-wrap;max-height:420px;overflow:auto;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Microsoft YaHei",monospace;line-height:1.75;
}

.foot{
  padding:20px 26px 28px;font-size:12px;color:var(--muted-2);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  max-width:1040px;margin:0 auto;width:100%;
}

/* ================= 弹窗 ================= */
.modal{
  position:fixed;inset:0;z-index:60;
  background:rgba(10,18,36,.74);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  display:flex;align-items:center;justify-content:center;padding:24px;
  animation:fadeIn .18s var(--ease);
}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.modal-card{
  background:var(--paper);border-radius:18px;width:min(820px,100%);max-height:92vh;
  display:flex;flex-direction:column;overflow:hidden;
  box-shadow:var(--sh-lg);
  animation:popIn .24s var(--ease-out);
}
@keyframes popIn{from{opacity:0;transform:translateY(10px) scale(.985)}to{opacity:1;transform:none}}
.modal-head{display:flex;align-items:center;gap:12px;padding:15px 19px;border-bottom:1px solid var(--line)}
.modal-head b{font-size:14px;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.modal-tools{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--muted)}
.modal-body{flex:1;overflow:auto;background:var(--mist);display:flex;align-items:center;justify-content:center;padding:18px}
.modal-body img{max-width:100%;box-shadow:0 10px 34px rgba(13,27,56,.2);border-radius:5px;background:#fff}

/* ================= 窄屏 ================= */
@media (max-width:1024px){
  /* 底部导航：手机上代替侧栏做主导航 */
  .tabbar{display:flex}
  .main{padding-bottom:calc(58px + env(safe-area-inset-bottom))}
  .switchset{display:none}
}

@media (max-width:900px){
  .sidebar{
    position:fixed;left:0;top:0;bottom:0;z-index:50;
    transform:translateX(-100%);
    transition:transform .26s var(--ease-out);
    box-shadow:0 0 50px rgba(0,0,0,.38);
  }
  body.nav-open .sidebar{transform:translateX(0)}
  body.nav-open .sidebar-mask{display:block;position:fixed;inset:0;background:rgba(10,18,36,.52);z-index:40;backdrop-filter:blur(2px)}
  .menu-btn{display:flex}
  .workspace{padding:20px 16px}
  .empty h1{font-size:27px}
  .op-head h1{font-size:23px}
  .step{padding:19px 17px;border-radius:16px}
  .form{grid-template-columns:1fr}
  .btn-primary{flex:1}
  .topbar{padding:0 16px;height:56px}
  .foot{padding:16px}
  .file-thumb{display:none}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
}