/* ============================================================================
   PaperForge — 论文工坊
   深墨 + 琥珀金学术风：一套自洽的排版与组件系统
   ========================================================================= */

:root{
  /* 底色层次 */
  --bg:          #060a12;
  --bg-soft:     #0a101d;
  --panel:       #0e1524;
  --panel-2:     #131c30;
  --panel-3:     #182339;

  /* 描边 */
  --line:        rgba(255,255,255,.075);
  --line-2:      rgba(255,255,255,.14);
  --line-3:      rgba(255,255,255,.22);

  /* 文字 */
  --fg:          #e9eef8;
  --fg-soft:     #b6c2d6;
  --fg-dim:      #8492ab;
  --fg-dim2:     #5d6982;

  /* 强调 */
  --amber:       #f2a93c;
  --amber-2:     #ffc76b;
  --amber-soft:  rgba(242,169,60,.13);
  --amber-line:  rgba(242,169,60,.45);
  --teal:        #5ac8c8;
  --violet:      #9b8cff;
  --ok:          #4ade80;
  --danger:      #ff6b6b;

  /* 形状与阴影 */
  --r-lg: 16px;
  --r-md: 12px;
  --r-sm: 9px;
  --r-xs: 7px;
  --sh-1: 0 1px 2px rgba(0,0,0,.35);
  --sh-2: 0 10px 30px -12px rgba(0,0,0,.6);
  --sh-3: 0 24px 60px -20px rgba(0,0,0,.7);
  --sh-amber: 0 10px 30px -12px rgba(242,169,60,.45);
  --ease: cubic-bezier(.4,0,.2,1);

  --serif: "Songti SC","Source Han Serif SC","Noto Serif SC",Georgia,"Times New Roman",serif;
  --sans: system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",Roboto,sans-serif;
  --mono: ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
html{scroll-behavior:smooth}

body{
  background:
    radial-gradient(1100px 560px at 78% -8%, rgba(242,169,60,.11), transparent 62%),
    radial-gradient(820px 460px at -6% 8%, rgba(90,200,200,.075), transparent 58%),
    radial-gradient(900px 700px at 50% 108%, rgba(155,140,255,.05), transparent 62%),
    var(--bg);
  background-attachment:fixed;
  color:var(--fg);
  font-family:var(--sans);
  font-size:15px;
  line-height:1.7;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
}

a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;line-height:1.3;margin:0;letter-spacing:.005em}
p{margin:0 0 1em}
code{font-family:var(--mono);font-size:.85em;color:var(--amber-2);
  background:rgba(242,169,60,.09);padding:.1em .38em;border-radius:5px}
hr{border:0;border-top:1px solid var(--line);margin:20px 0}

::selection{background:rgba(242,169,60,.28);color:#fff}

/* 滚动条 */
*::-webkit-scrollbar{width:10px;height:10px}
*::-webkit-scrollbar-track{background:transparent}
*::-webkit-scrollbar-thumb{background:rgba(255,255,255,.1);border-radius:6px;border:2px solid transparent;background-clip:content-box}
*::-webkit-scrollbar-thumb:hover{background:rgba(242,169,60,.4);background-clip:content-box}

/* 键盘可达性 */
:focus-visible{outline:2px solid var(--amber);outline-offset:2px;border-radius:6px}

/* 数字统一等宽，表格更整齐 */
.stat b,td,.invite-code,.t-title{font-variant-numeric:tabular-nums}

.wrap{width:auto;max-width:1440px;margin:0 auto;padding:0 26px}
.dim{color:var(--fg-dim)}
.hidden{display:none!important}
.topline{height:2px;background:linear-gradient(90deg,var(--amber),var(--teal) 45%,var(--violet) 70%,transparent);opacity:.85}

/* ============================================================ 骨架布局
   左侧固定菜单 + 顶部栏 + 页签栏 + 内容区（窄屏时侧栏变抽屉） */
.shell{display:flex;min-height:100vh}
.shell-main{
  flex:1;min-width:0;display:flex;flex-direction:column;
  margin-left:var(--sidenav-w);
}
:root{--sidenav-w:246px;--topbar-h:58px}

.scrim{
  position:fixed;inset:0;background:rgba(2,5,10,.62);z-index:60;
  backdrop-filter:blur(2px);animation:fadeIn .18s var(--ease);
}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}

/* ------------------------------------------------------------ 侧边菜单 */
.sidenav{
  position:fixed;left:0;top:0;bottom:0;width:var(--sidenav-w);z-index:70;
  display:flex;flex-direction:column;
  background:linear-gradient(180deg,#0b1220,#080d18 70%);
  border-right:1px solid var(--line);
  transition:transform .26s var(--ease);
}
.sn-brand{
  display:flex;align-items:center;gap:12px;padding:18px 18px 16px;
  border-bottom:1px solid var(--line);flex:0 0 auto;
}
.sn-mark{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(150deg,var(--amber-2),#d1800f);
  color:#1c1206;font-weight:800;font-family:var(--serif);font-size:20px;
  box-shadow:0 6px 18px -6px rgba(242,169,60,.55), inset 0 1px 0 rgba(255,255,255,.4);
  flex:0 0 auto;
}
.sn-text{display:flex;flex-direction:column;line-height:1.2;min-width:0}
.sn-text b{font-size:15.5px;font-weight:600;letter-spacing:.05em;white-space:nowrap}
.sn-text i{font-style:normal;font-size:10px;color:var(--fg-dim2);letter-spacing:.2em;text-transform:uppercase}

.sn-body{flex:1;overflow-y:auto;padding:14px 12px 20px}
.sn-group{
  font-size:10.5px;color:var(--fg-dim2);letter-spacing:.16em;text-transform:uppercase;
  padding:16px 12px 8px;font-weight:600;
}
.sn-group:first-child{padding-top:4px}
.sn-item{
  display:flex;align-items:center;gap:11px;padding:10px 12px;margin-bottom:2px;
  border-radius:var(--r-sm);color:var(--fg-dim);font-size:14px;
  transition:background .16s var(--ease), color .16s var(--ease);
  position:relative;
}
.sn-item:hover{background:rgba(255,255,255,.05);color:var(--fg)}
.sn-item.active{
  background:var(--amber-soft);color:var(--amber-2);font-weight:500;
}
.sn-item.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:2.5px;
  background:var(--amber);border-radius:0 3px 3px 0;
}
.sn-icon{
  width:22px;flex:0 0 auto;text-align:center;font-size:15px;
  color:inherit;opacity:.85;
}
.sn-label{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.sn-foot{flex:0 0 auto;padding:12px;border-top:1px solid var(--line)}
.sn-user{display:flex;align-items:center;gap:10px;padding:6px 8px 10px;min-width:0}
.sn-avatar{
  width:32px;height:32px;border-radius:9px;display:grid;place-items:center;flex:0 0 auto;
  background:rgba(255,255,255,.07);border:1px solid var(--line-2);
  font-size:13.5px;color:var(--fg-soft);
}
.sn-userinfo{display:flex;flex-direction:column;line-height:1.3;min-width:0}
.sn-userinfo b{font-size:13.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sn-userinfo i{font-style:normal;font-size:11px;color:var(--fg-dim2)}
.sn-credits{
  display:flex;justify-content:space-between;align-items:center;
  padding:9px 11px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.035);border:1px solid var(--line);
  font-size:12.5px;color:var(--fg-dim);
}
.sn-credits b{color:var(--amber-2);font-family:var(--serif);font-size:16px}

/* ------------------------------------------------------------ 顶部栏 */
.topbar{
  position:sticky;top:0;z-index:40;height:var(--topbar-h);flex:0 0 auto;
  display:flex;align-items:center;gap:14px;padding:0 22px;
  background:rgba(6,10,18,.86);border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(1.3);
}
.tb-burger{
  display:none;background:none;border:0;color:var(--fg-soft);font-size:19px;
  cursor:pointer;padding:6px 8px;border-radius:var(--r-xs);line-height:1;
}
.tb-burger:hover{background:rgba(255,255,255,.07);color:var(--fg)}
.tb-crumbs{display:flex;align-items:center;gap:6px;font-size:13.5px;color:var(--fg-dim2);flex:1;min-width:0;overflow:hidden}
.crumb{display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.crumb:hover span{color:var(--amber-2)}
.crumb:last-child span{color:var(--fg)}
.crumb i{font-style:normal;color:var(--fg-dim2);opacity:.55}

.tb-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.tb-role{
  font-size:11.5px;padding:2.5px 10px;border-radius:999px;
  border:1px solid var(--line-2);color:var(--fg-dim);background:rgba(255,255,255,.035);
}
.tb-role.agent{border-color:rgba(90,200,200,.45);color:#8fe0e0;background:rgba(90,200,200,.09)}
.tb-role.admin{border-color:var(--amber-line);color:var(--amber-2);background:var(--amber-soft)}
.tb-credits{
  font-size:12.5px;color:var(--amber-2);padding:4px 11px;border-radius:999px;
  background:var(--amber-soft);border:1px solid var(--amber-line);
  font-variant-numeric:tabular-nums;
}
.tb-user{
  display:flex;align-items:center;gap:8px;cursor:pointer;position:relative;
  padding:5px 10px 5px 6px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  transition:border-color .16s var(--ease), background .16s var(--ease);
}
.tb-user:hover{border-color:var(--line-2);background:rgba(255,255,255,.06)}
.tb-avatar{
  width:26px;height:26px;border-radius:50%;display:grid;place-items:center;
  background:linear-gradient(150deg,var(--amber-2),#cf8418);color:#1c1206;
  font-size:12.5px;font-weight:700;flex:0 0 auto;
}
.tb-name{font-size:13.5px;color:var(--fg-soft);max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tb-caret{font-size:10px;color:var(--fg-dim2)}
.tb-menu{
  position:absolute;right:0;top:calc(100% + 9px);min-width:186px;z-index:50;
  background:rgba(18,26,44,.98);border:1px solid var(--line-2);border-radius:var(--r-md);
  box-shadow:var(--sh-3);padding:6px;backdrop-filter:blur(12px);
}
.tb-menu-head{padding:10px 12px;border-bottom:1px solid var(--line);margin-bottom:5px}
.tb-menu-head b{display:block;font-size:13.5px;margin-bottom:2px}
.tb-menu-head i{font-style:normal;font-size:11.5px;color:var(--fg-dim2)}
.tb-menu a,.tb-menu button{
  display:block;width:100%;text-align:left;padding:9px 12px;border-radius:var(--r-xs);
  font-size:13.5px;color:var(--fg-soft);background:none;border:0;cursor:pointer;
  font-family:var(--sans);transition:.15s var(--ease);
}
.tb-menu a:hover,.tb-menu button:hover{background:rgba(255,255,255,.07);color:var(--fg)}
.tb-menu button.danger{color:#ffb3b3}
.tb-menu button.danger:hover{background:rgba(255,107,107,.14)}

/* ------------------------------------------------------------ 页签栏 */
.tabbar{
  display:flex;align-items:center;gap:8px;padding:9px 22px 0;
  border-bottom:1px solid var(--line);background:rgba(6,10,18,.5);
  flex:0 0 auto;
}
.tb-scroll{display:flex;gap:6px;overflow-x:auto;scrollbar-width:none;flex:1;padding-bottom:9px}
.tb-scroll::-webkit-scrollbar{display:none}
.ptab{
  display:inline-flex;align-items:center;gap:8px;padding:6px 11px;flex:0 0 auto;
  border:1px solid var(--line);border-radius:var(--r-xs);
  font-size:12.5px;color:var(--fg-dim);background:rgba(255,255,255,.025);
  transition:.16s var(--ease);
}
.ptab:hover{border-color:var(--line-2);color:var(--fg-soft)}
.ptab.active{border-color:var(--amber-line);background:var(--amber-soft);color:var(--amber-2)}
.ptab-x{
  background:none;border:0;color:inherit;opacity:.5;cursor:pointer;
  font-size:14px;line-height:1;padding:0 1px;border-radius:3px;
}
.ptab-x:hover{opacity:1;background:rgba(255,255,255,.12)}
.ptab-more{
  background:none;border:1px solid var(--line);border-radius:var(--r-xs);
  color:var(--fg-dim);cursor:pointer;padding:6px 10px;font-size:13px;
  margin-bottom:9px;flex:0 0 auto;
}
.ptab-more:hover{border-color:var(--line-2);color:var(--fg)}

/* ------------------------------------------------------------ 内容区 */
.content{flex:1;min-width:0;padding:22px 22px 44px;max-width:1440px;width:100%;margin:0 auto}
.foot{border-top:1px solid var(--line);padding:22px;font-size:12.5px;color:var(--fg-dim2)}
.foot-inner{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;max-width:1440px;margin:0 auto}

/* ============================================================ 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  padding:9px 17px;border-radius:var(--r-sm);font-size:14px;font-weight:500;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .16s var(--ease), background .18s var(--ease),
             border-color .18s var(--ease), color .18s var(--ease), box-shadow .18s var(--ease);
  font-family:var(--sans);
}
.btn:active{transform:translateY(1px) scale(.99)}
.btn-lg{padding:13px 26px;font-size:15.5px;border-radius:var(--r-md)}
.btn-sm{padding:6px 12px;font-size:13px}

.btn-solid{
  background:linear-gradient(165deg,var(--amber-2),#cf8418);
  color:#1c1206;font-weight:700;
  box-shadow:var(--sh-amber), inset 0 1px 0 rgba(255,255,255,.42);
}
.btn-solid:hover{filter:brightness(1.07);transform:translateY(-1.5px);box-shadow:0 14px 34px -12px rgba(242,169,60,.6)}

.btn-line{border-color:var(--line-2);color:var(--fg-soft);background:rgba(255,255,255,.02)}
.btn-line:hover{border-color:var(--amber-line);color:var(--amber-2);background:var(--amber-soft)}

.btn-ghost{color:var(--fg-dim);background:transparent}
.btn-ghost:hover{color:var(--fg);background:rgba(255,255,255,.06)}

.btn-danger{border-color:rgba(255,107,107,.32);color:#ffb3b3;background:rgba(255,107,107,.05)}
.btn-danger:hover{background:rgba(255,107,107,.14);border-color:rgba(255,107,107,.5)}

.btn[disabled]{opacity:.42;cursor:not-allowed;transform:none!important;filter:grayscale(.3)}

/* ============================================================ 首页 */
.hero{display:grid;grid-template-columns:1.12fr .88fr;gap:60px;align-items:center;padding:72px 0 60px}
.pill{
  display:inline-block;padding:5px 14px;border-radius:999px;font-size:12px;
  color:var(--amber-2);border:1px solid var(--amber-line);
  background:var(--amber-soft);letter-spacing:.05em;
  backdrop-filter:blur(6px);
}
.hero h1{font-size:47px;line-height:1.24;margin:22px 0 18px;letter-spacing:-.01em}
.hl{color:var(--amber);position:relative;white-space:nowrap}
.hl::after{
  content:"";position:absolute;left:0;right:0;bottom:.1em;height:.34em;z-index:-1;
  background:linear-gradient(90deg,rgba(242,169,60,.3),rgba(242,169,60,.08));
  border-radius:4px;
}
.lead{color:var(--fg-soft);font-size:16.5px;max-width:60ch;margin:0 0 30px;line-height:1.8}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-facts{
  display:flex;gap:36px;list-style:none;padding:26px 0 0;margin:32px 0 0;
  border-top:1px solid var(--line);
}
.hero-facts li{display:flex;flex-direction:column;gap:2px}
.hero-facts b{font-family:var(--serif);font-size:25px;color:var(--amber-2);font-weight:600}
.hero-facts span{font-size:12.5px;color:var(--fg-dim2);letter-spacing:.03em}

.hero-art{position:relative;display:flex;justify-content:center}
.paper{
  width:100%;max-width:430px;border-radius:18px;border:1px solid var(--line-2);
  background:linear-gradient(175deg,var(--panel-2),var(--panel) 60%);
  box-shadow:var(--sh-3), inset 0 1px 0 rgba(255,255,255,.06);
  overflow:hidden;
}
.paper-head{
  display:flex;align-items:center;gap:7px;padding:12px 16px;
  border-bottom:1px solid var(--line);background:rgba(0,0,0,.2);
}
.paper-body{padding:24px 22px 16px}
.line{height:9px;border-radius:5px;background:rgba(255,255,255,.1);margin-bottom:14px}
.line.accent{background:linear-gradient(90deg,rgba(242,169,60,.8),rgba(242,169,60,.12))}
.gap{height:12px}
.w52{width:52%}.w60{width:60%}.w68{width:68%}.w70{width:70%}.w76{width:76%}
.w84{width:84%}.w88{width:88%}.w90{width:90%}.w92{width:92%}.w95{width:95%}
.paper-foot{display:flex;gap:9px;padding:14px 18px;border-top:1px solid var(--line);background:rgba(0,0,0,.16)}
.chip{
  font-size:11.5px;padding:3px 11px;border-radius:999px;
  border:1px solid var(--line-2);color:var(--fg-dim);background:rgba(255,255,255,.03);
}
.chip.ok{border-color:rgba(74,222,128,.4);color:#9ae6b4;background:rgba(74,222,128,.09)}
.ruler{
  position:absolute;right:-6px;top:28px;bottom:28px;display:flex;flex-direction:column;
  justify-content:space-between;width:16px;
}
.ruler i{display:block;height:1px;background:var(--line-2);width:9px}
.ruler i:nth-child(5n+1){width:16px;background:var(--line-3)}

.block{padding:52px 0;border-top:1px solid var(--line)}
.block-title{font-size:27px;letter-spacing:-.005em}
.block-sub{color:var(--fg-dim);margin:10px 0 30px;font-size:15px}
.grid{display:grid;gap:16px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.card{
  background:linear-gradient(180deg,var(--panel-2),rgba(14,21,36,.6));
  border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;
  transition:transform .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
  position:relative;overflow:hidden;
}
.card::before{
  content:"";position:absolute;inset:0 0 auto;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.18),transparent);
  opacity:0;transition:opacity .25s var(--ease);
}
.card:hover{transform:translateY(-3px);border-color:var(--line-2);box-shadow:var(--sh-2)}
.card:hover::before{opacity:1}
.card h3{font-size:17px;margin:14px 0 8px}
.card p{margin:0;color:var(--fg-dim);font-size:14px;line-height:1.75}
.card-icon{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  font-family:var(--serif);font-size:17px;color:var(--amber);
  background:var(--amber-soft);border:1px solid var(--amber-line);
}
.kind{border-left:2px solid var(--amber-line);padding:5px 0 5px 18px;margin-bottom:10px}
.kind b{font-size:15px}
.kind span{display:block;color:var(--fg-dim);font-size:13px;margin-top:2px}

.flow{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.flow li{
  border:1px solid var(--line);border-radius:var(--r-md);padding:18px;
  background:linear-gradient(180deg,rgba(19,28,48,.7),transparent);
  transition:border-color .2s var(--ease);
}
.flow li:hover{border-color:var(--line-2)}
.step{font-family:var(--mono);font-size:11.5px;color:var(--amber);letter-spacing:.14em}

.cta{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  border:1px solid var(--line-2);border-radius:20px;padding:32px 36px;
  background:linear-gradient(120deg,rgba(242,169,60,.1),rgba(90,200,200,.06) 55%,transparent);
}
.foot{border-top:1px solid var(--line);padding:26px 0 44px;font-size:13px;color:var(--fg-dim2)}
.foot-inner{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}

/* ============================================================ 表单 */
.field{margin-bottom:17px}
.field label{
  display:block;font-size:13px;color:var(--fg-soft);margin-bottom:7px;
  font-weight:500;letter-spacing:.02em;
}
input,select,textarea{
  width:100%;padding:11px 14px;border-radius:var(--r-sm);
  border:1px solid var(--line-2);background:rgba(4,8,15,.72);
  color:var(--fg);font-family:var(--sans);font-size:14.5px;
  outline:none;transition:border-color .18s var(--ease), box-shadow .18s var(--ease), background .18s var(--ease);
  line-height:1.6;
}
input::placeholder,textarea::placeholder{color:var(--fg-dim2)}
input:hover,select:hover,textarea:hover{border-color:var(--line-3)}
input:focus,select:focus,textarea:focus{
  border-color:var(--amber-line);background:rgba(4,8,15,.9);
  box-shadow:0 0 0 4px rgba(242,169,60,.12);
}
textarea{resize:vertical;min-height:80px}
select{
  appearance:none;cursor:pointer;padding-right:38px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238492ab' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;
}
select option{background:var(--panel-2);color:var(--fg)}
input[type=number]{font-variant-numeric:tabular-nums}
textarea[readonly]{cursor:text}
.row-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.hint{
  font-size:12.5px;color:var(--fg-dim2);line-height:1.75;margin-top:10px;
  padding:10px 13px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.025);border:1px solid var(--line);
}
.alert{
  padding:12px 15px;border-radius:var(--r-sm);font-size:13.5px;margin-bottom:18px;
  border:1px solid rgba(255,107,107,.4);background:rgba(255,107,107,.09);color:#ffc0c0;
}
.alert.ok{border-color:rgba(74,222,128,.4);background:rgba(74,222,128,.09);color:#a6f0bb}

.auth{
  max-width:452px;margin:64px auto 96px;
  border:1px solid var(--line-2);border-radius:20px;padding:38px 36px 34px;
  background:linear-gradient(175deg,var(--panel-2),var(--panel) 65%);
  box-shadow:var(--sh-3), inset 0 1px 0 rgba(255,255,255,.05);
  position:relative;overflow:hidden;
}
.auth::before{
  content:"";position:absolute;inset:0 0 auto;height:2px;
  background:linear-gradient(90deg,transparent,var(--amber-line),transparent);
}
.auth h1{font-size:26px;margin-bottom:9px}
.auth .sub{color:var(--fg-dim);font-size:14px;margin:0 0 24px;line-height:1.7}
.auth-card{
  border:1px solid var(--line-2);border-radius:20px;padding:34px 32px;
  background:linear-gradient(175deg,var(--panel-2),var(--panel) 65%);
  box-shadow:var(--sh-3), inset 0 1px 0 rgba(255,255,255,.05);
}
.alt{text-align:center;margin-top:22px;font-size:13.5px;color:var(--fg-dim)}
.alt a{color:var(--amber-2)}
.alt a:hover{text-decoration:underline}

/* ============================================================ 页头 / 统计 */
.page-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:22px;
  flex-wrap:wrap;padding:30px 0 20px;
}
.page-head h1{font-size:29px;letter-spacing:-.01em}
.page-head .sub{color:var(--fg-dim);font-size:14px;margin-top:7px;max-width:70ch;line-height:1.7}

.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:26px}
.stat{
  border:1px solid var(--line);border-radius:var(--r-lg);padding:18px 20px;
  background:linear-gradient(180deg,var(--panel-2),rgba(14,21,36,.45));
  position:relative;overflow:hidden;
  transition:border-color .2s var(--ease), transform .2s var(--ease);
}
.stat::after{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;
  background:linear-gradient(180deg,var(--amber),transparent);
  opacity:.7;
}
.stat:hover{border-color:var(--line-2);transform:translateY(-2px)}
.stat b{
  display:block;font-family:var(--serif);font-size:31px;font-weight:600;
  color:var(--fg);line-height:1.2;letter-spacing:-.015em;
}
.stat span{display:block;font-size:12.5px;color:var(--fg-dim2);margin-top:5px;letter-spacing:.02em}

/* ============================================================ 面板 */
.panel{
  border:1px solid var(--line);border-radius:var(--r-lg);
  background:linear-gradient(180deg,var(--panel-2),rgba(14,21,36,.5));
  overflow:hidden;box-shadow:var(--sh-1);
}
.panel-head{
  padding:15px 20px;border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  background:rgba(0,0,0,.14);
}
.panel-head h3{font-size:16px;font-weight:600}
.panel-head .dim{font-size:12.5px}
.panel-body{padding:18px 20px}
.panel-body.scroll{max-height:none;overflow:auto}
.panel + .panel{margin-top:18px}

/* ============================================================ 表格 */
.table-wrap{border:1px solid var(--line);border-radius:var(--r-lg);overflow:auto;background:rgba(6,10,18,.35)}
table{width:100%;border-collapse:collapse;font-size:13.8px}
thead th{
  text-align:left;padding:12px 16px;font-size:12px;color:var(--fg-dim2);
  font-weight:600;letter-spacing:.06em;text-transform:uppercase;
  border-bottom:1px solid var(--line-2);background:rgba(0,0,0,.26);
  white-space:nowrap;position:sticky;top:0;z-index:1;
  backdrop-filter:blur(8px);
}
tbody td{padding:13px 16px;border-bottom:1px solid var(--line);vertical-align:middle;color:var(--fg-soft)}
tbody tr{transition:background .15s var(--ease)}
tbody tr:hover{background:rgba(242,169,60,.045)}
tbody tr:last-child td{border-bottom:0}
.t-title{font-weight:600;color:var(--fg);transition:color .16s var(--ease)}
.t-title:hover{color:var(--amber-2)}

.tag{
  display:inline-block;font-size:11.5px;padding:2.5px 10px;border-radius:999px;
  border:1px solid var(--line-2);color:var(--fg-dim);background:rgba(255,255,255,.035);
  white-space:nowrap;line-height:1.6;letter-spacing:.02em;
}
.tag.draft{border-color:var(--amber-line);color:var(--amber-2);background:var(--amber-soft)}
.tag.outlined{border-color:rgba(90,200,200,.45);color:#8fe0e0;background:rgba(90,200,200,.09)}
.tag.writing{border-color:rgba(74,222,128,.42);color:#9ae6b4;background:rgba(74,222,128,.09)}

.empty{padding:64px 20px;text-align:center;color:var(--fg-dim)}
.empty h3{font-size:17px;color:var(--fg-soft);margin-bottom:8px}

/* ============================================================ 工作台 */
.workbench{display:grid;grid-template-columns:330px 1fr;gap:20px;padding:26px 0 72px;align-items:start}
.outline-tree{list-style:none;margin:0;padding:0}
.outline-tree li{padding:9px 12px;border-radius:var(--r-sm);cursor:pointer;font-size:13.5px;
  transition:background .16s var(--ease), color .16s var(--ease);color:var(--fg-soft)}
.outline-tree li:hover{background:rgba(255,255,255,.05);color:var(--fg)}
.outline-tree li.active{background:var(--amber-soft);color:var(--amber-2)}
.tree-hint{color:var(--fg-dim2);font-size:13px;padding:18px 4px;line-height:1.85}

.meta-list{list-style:none;margin:0;padding:0;font-size:13.5px;color:var(--fg-dim)}
.meta-list li{
  display:flex;justify-content:space-between;gap:14px;align-items:baseline;
  padding:9px 0;border-bottom:1px dashed var(--line);
}
.meta-list li:last-child{border-bottom:0}
.meta-list b{color:var(--fg);font-weight:600}

.editor-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.editor{
  width:100%;min-height:460px;border:0;border-radius:0;background:transparent;
  color:var(--fg);font-family:var(--sans);font-size:15.5px;line-height:1.95;
  padding:24px 26px;resize:vertical;outline:none;
}
.editor::placeholder{color:var(--fg-dim2)}
.editor:focus{box-shadow:none;background:transparent}
.statusbar{
  display:flex;align-items:center;gap:16px;padding:11px 20px;
  border-top:1px solid var(--line);font-size:12.5px;color:var(--fg-dim2);
  background:rgba(0,0,0,.18);
}
.dot-live{width:7px;height:7px;border-radius:50%;background:var(--fg-dim2);transition:.25s var(--ease)}
.dot-live.on{background:var(--ok);box-shadow:0 0 0 4px rgba(74,222,128,.16)}
.toolbar{display:flex;gap:9px;flex-wrap:wrap;align-items:center}

.spin{
  display:inline-block;width:13px;height:13px;border-radius:50%;
  border:1.8px solid rgba(255,255,255,.25);border-top-color:currentColor;
  animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* ============================================================ 批注 / 对比 */
.comment{border-left:2px solid rgba(90,200,200,.5);padding:9px 0 9px 14px;margin-bottom:15px}
.diff{
  border:1px solid var(--line);border-radius:var(--r-md);padding:15px 17px;margin-bottom:15px;
  background:rgba(6,10,18,.4);
}
.checklist{list-style:none;margin:0;padding:0}
.checklist li{display:flex;gap:10px;align-items:flex-start;padding:8px 0;font-size:13.8px;color:var(--fg-soft)}
.bar{height:6px;border-radius:4px;background:rgba(255,255,255,.08);overflow:hidden;min-width:70px}
.bar > i{display:block;height:100%;border-radius:4px;background:linear-gradient(90deg,var(--amber),var(--amber-2))}

/* ============================================================ 选项组 */
.style-list{display:flex;flex-direction:column;gap:12px}
.style-item{
  display:flex;gap:14px;padding:15px 17px;border:1px solid var(--line);
  border-radius:var(--r-md);cursor:pointer;align-items:flex-start;
  background:rgba(255,255,255,.014);
  transition:border-color .18s var(--ease), background .18s var(--ease);
}
.style-item:hover{border-color:var(--line-2);background:rgba(255,255,255,.03)}
.style-item.active{border-color:var(--amber-line);background:var(--amber-soft)}
.radio-row{display:flex;gap:10px;flex-wrap:wrap}
.radio-chip{
  flex:1 1 230px;display:flex;align-items:center;gap:9px;padding:11px 14px;
  border:1px solid var(--line);border-radius:var(--r-sm);cursor:pointer;
  font-size:13.5px;color:var(--fg-dim);
  transition:border-color .18s var(--ease), color .18s var(--ease), background .18s var(--ease);
}
.radio-chip:hover{border-color:var(--line-2);color:var(--fg-soft);background:rgba(255,255,255,.03)}
.radio-chip:has(input:checked){
  border-color:var(--amber-line);color:var(--fg);background:var(--amber-soft);
}
.map-grid{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}
.map-cell{
  display:inline-flex;align-items:center;gap:7px;padding:6px 12px;border-radius:var(--r-xs);
  border:1px solid var(--line);font-size:12.5px;color:var(--fg-dim);
  background:rgba(255,255,255,.02);
}
.map-cell.changed{border-color:var(--amber-line);background:var(--amber-soft);color:var(--amber-2)}

/* ============================================================ 图表 */
.chart{display:flex;align-items:flex-end;gap:8px;height:160px;padding:8px 0 0;overflow-x:auto}
.chart .col{display:flex;flex-direction:column;align-items:center;gap:6px;flex:1 0 auto;min-width:34px}
.chart .val{font-size:10.5px;color:var(--fg-dim2);font-variant-numeric:tabular-nums}
.chart .bar{
  width:100%;max-width:34px;border-radius:5px 5px 0 0;min-height:4px;
  background:linear-gradient(180deg,var(--amber-2),rgba(242,169,60,.32));
  transition:filter .18s var(--ease);animation:grow .45s var(--ease);
}
.chart .bar:hover{filter:brightness(1.25)}
.chart .bar.warn{background:linear-gradient(180deg,#ff8f8f,rgba(255,107,107,.3))}
.chart .lbl{font-size:10.5px;color:var(--fg-dim2);white-space:nowrap}
@keyframes grow{from{transform:scaleY(0);transform-origin:bottom}to{transform:scaleY(1)}}

/* ============================================================ 启动 / 提示 */
.boot{display:grid;place-items:center;height:60vh;color:var(--fg-dim);gap:14px;text-align:center}
main.wrap{min-height:62vh;padding-bottom:20px}

.toast-host{position:fixed;right:22px;bottom:26px;display:flex;flex-direction:column;gap:10px;z-index:90}
.toast{
  padding:12px 17px;border-radius:var(--r-md);border:1px solid var(--line-2);
  background:rgba(18,26,44,.96);backdrop-filter:blur(12px);
  font-size:13.8px;color:var(--fg-soft);box-shadow:var(--sh-3);
  animation:toastIn .24s var(--ease);max-width:340px;
}
.toast.ok{border-color:rgba(74,222,128,.45);color:#a6f0bb}
.toast.error{border-color:rgba(255,107,107,.5);color:#ffb8b8}
@keyframes toastIn{from{opacity:0;transform:translateY(10px) scale(.97)}to{opacity:1;transform:none}}

/* ============================================================ 公告条 */
.ann-bar{
  display:flex;gap:12px;align-items:center;font-size:13.5px;
  padding:11px 4vw;border-bottom:1px solid var(--line);
  background:linear-gradient(90deg,rgba(242,169,60,.09),transparent 65%);
}
.ann-tag{
  flex:0 0 auto;font-size:11.5px;padding:2.5px 10px;border-radius:999px;
  border:1px solid var(--amber-line);color:var(--amber-2);background:var(--amber-soft);
}
.ann-bar b{color:var(--fg);font-weight:600}
.ann-body{color:var(--fg-dim);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0}
.ann-time{margin-left:auto;font-size:12px;white-space:nowrap}
.ann-close{
  background:none;border:0;color:var(--fg-dim2);font-size:19px;cursor:pointer;
  padding:0 6px;line-height:1;transition:color .16s var(--ease);
}
.ann-close:hover{color:var(--fg)}

/* ============================================================ 标签页 */
.tabs{
  display:flex;gap:4px;margin:0 0 20px;border-bottom:1px solid var(--line);
  overflow-x:auto;scrollbar-width:none;
}
.tabs::-webkit-scrollbar{display:none}
.tab{
  background:none;border:0;border-bottom:2px solid transparent;color:var(--fg-dim);
  padding:11px 16px;font-size:14.2px;cursor:pointer;font-family:var(--sans);
  white-space:nowrap;position:relative;font-weight:500;
  transition:color .18s var(--ease), border-color .18s var(--ease);
}
.tab:hover{color:var(--fg-soft)}
.tab.active{color:var(--amber-2);border-bottom-color:var(--amber)}
.tab-badge{
  display:inline-block;margin-left:7px;font-size:11px;padding:1px 8px;border-radius:999px;
  background:rgba(255,107,107,.18);color:#ffb3b3;border:1px solid rgba(255,107,107,.4);
  font-variant-numeric:tabular-nums;
}

/* ============================================================ 快捷工具 */
.tools-layout{display:grid;grid-template-columns:250px 1fr;gap:20px;padding:24px 0 64px;align-items:start}
.tools-nav{display:flex;flex-direction:column;gap:8px;position:sticky;top:86px}
.tool-item{
  display:flex;gap:12px;align-items:center;padding:12px 14px;
  border:1px solid var(--line);border-radius:var(--r-md);
  background:rgba(255,255,255,.014);cursor:pointer;text-align:left;
  color:var(--fg-soft);transition:.18s var(--ease);font-family:var(--sans);
}
.tool-item:hover{border-color:var(--line-2);background:rgba(255,255,255,.04);transform:translateX(2px)}
.tool-item.active{
  border-color:var(--amber-line);background:var(--amber-soft);
  box-shadow:inset 3px 0 0 var(--amber);
}
.tool-icon{
  width:32px;height:32px;border-radius:10px;display:grid;place-items:center;
  font-family:var(--serif);font-size:16px;color:var(--amber);
  background:var(--amber-soft);border:1px solid var(--amber-line);flex:0 0 auto;
}
.tool-meta{display:flex;flex-direction:column;line-height:1.35;min-width:0}
.tool-meta b{font-size:14px;color:var(--fg)}
.tool-meta i{
  font-style:normal;font-size:11.5px;color:var(--fg-dim2);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}

/* ============================================================ Markdown 输出 */
.md-body{font-size:14.8px;line-height:1.92;color:var(--fg-soft);word-break:break-word}
.md-body h1,.md-body h2,.md-body h3,.md-body h4{
  font-family:var(--serif);margin:24px 0 12px;line-height:1.4;color:var(--fg);
}
.md-body h1{font-size:22px;padding-bottom:8px;border-bottom:1px solid var(--line)}
.md-body h2{font-size:18.5px}
.md-body h3{font-size:16.5px;color:var(--amber-2)}
.md-body h4{font-size:15px}
.md-body h1:first-child,.md-body h2:first-child,.md-body h3:first-child{margin-top:0}
.md-body p{margin:11px 0}
.md-body ul,.md-body ol{margin:11px 0 11px 24px;padding:0}
.md-body li{margin:5px 0}
.md-body li::marker{color:var(--amber)}
.md-body code{background:rgba(242,169,60,.1);padding:2px 6px;border-radius:5px;font-size:.88em;color:var(--amber-2)}
.md-body pre{
  background:rgba(2,5,10,.72);border:1px solid var(--line);border-radius:var(--r-md);
  padding:15px 17px;overflow:auto;margin:14px 0;line-height:1.65;
}
.md-body pre code{background:none;padding:0;color:var(--fg-soft);font-size:13px}
.md-body blockquote{
  border-left:2px solid var(--amber-line);margin:14px 0;padding:8px 0 8px 16px;
  color:var(--fg-dim);background:rgba(242,169,60,.04);border-radius:0 var(--r-sm) var(--r-sm) 0;
}
.md-body blockquote p{margin:4px 0}
.md-body hr{border:0;border-top:1px solid var(--line);margin:20px 0}
.md-body a{color:var(--amber-2);border-bottom:1px solid rgba(242,169,60,.3)}
.md-body strong{color:var(--fg);font-weight:600}
.md-body table{font-size:13.5px;margin:14px 0}

/* ============================================================ 对话 */
.chat-box{
  min-height:220px;max-height:560px;overflow:auto;
  display:flex;flex-direction:column;gap:16px;padding:6px 2px;
}
.chat-msg{display:flex;gap:11px;align-items:flex-start}
.chat-msg .who{
  flex:0 0 auto;width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  font-size:12.5px;background:rgba(255,255,255,.05);border:1px solid var(--line);
  max-width:none;padding:0;
}
.chat-msg.user .who{color:#8fe0e0;border-color:rgba(90,200,200,.45);background:rgba(90,200,200,.09)}
.chat-msg.assistant .who{color:var(--amber-2);border-color:var(--amber-line);background:var(--amber-soft)}
.chat-msg .bubble{flex:1;min-width:0;padding-top:3px}
.chat-input{margin-top:14px}

/* ============================================================ 充值套餐 */
.pkg-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(176px,1fr));gap:14px}
.pkg-card{
  border:1px solid var(--line);border-radius:var(--r-lg);padding:20px 17px;text-align:center;
  background:linear-gradient(180deg,var(--panel-2),rgba(14,21,36,.5));
  transition:transform .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
  position:relative;overflow:hidden;
}
.pkg-card::before{
  content:"";position:absolute;inset:0 0 auto;height:2px;
  background:linear-gradient(90deg,transparent,var(--amber-line),transparent);
}
.pkg-card:hover{border-color:var(--amber-line);transform:translateY(-3px);box-shadow:var(--sh-amber)}
.pkg-label{font-size:13px;color:var(--fg-dim);letter-spacing:.03em}
.pkg-points{
  font-family:var(--serif);font-size:34px;color:var(--amber);line-height:1.15;
  margin:8px 0 2px;letter-spacing:-.02em;
}
.pkg-points span{font-size:19px;color:var(--ok)}
.pkg-desc{font-size:11.5px;color:var(--fg-dim2);margin-bottom:12px}
.pkg-price{font-size:18px;font-weight:600;margin-bottom:14px;color:var(--fg)}
.pkg-card .btn{width:100%}

/* ============================================================ 邀请码 */
.invite-row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.invite-code{
  font-family:var(--mono);font-size:27px;letter-spacing:.18em;color:var(--amber);
  padding:11px 22px;border:1px dashed var(--amber-line);border-radius:var(--r-md);
  cursor:pointer;background:var(--amber-soft);user-select:all;
  transition:.18s var(--ease);
}
.invite-code:hover{background:rgba(242,169,60,.2);letter-spacing:.24em}

/* ============================================================ 响应式 */
@media (max-width:1080px){
  /* 侧栏收进抽屉，内容占满 */
  :root{--sidenav-w:0px}
  .shell-main{margin-left:0}
  .sidenav{transform:translateX(-101%);box-shadow:var(--sh-3);width:262px}
  .sidenav.open{transform:none}
  .tb-burger{display:block}
  .content{padding:18px 16px 40px}
  .topbar{padding:0 14px;gap:10px}
  .tabbar{padding:8px 14px 0}
  .foot{padding:18px 16px}

  .hero{grid-template-columns:1fr;gap:40px;padding:44px 0 38px}
  .hero h1{font-size:38px}
  .hero-art{order:-1}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(2,1fr)}
  .workbench{grid-template-columns:1fr}
  .tools-layout{grid-template-columns:1fr}
  .tools-nav{position:static;flex-direction:row;overflow-x:auto;padding-bottom:4px}
  .tool-item{flex:0 0 auto}
  .tool-meta i{display:none}
}
@media (max-width:820px){
  .tb-name{display:none}
  .tb-role{display:none}
  .tb-crumbs{font-size:12.5px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr}
  .row-2{grid-template-columns:1fr}
  .hero h1{font-size:32px}
  .page-head{padding:20px 0 16px}
  .page-head h1{font-size:23px}
  .ann-time{display:none}
  .ann-bar{padding:10px 16px}
  .cta{padding:26px 22px}
  .hero-facts{gap:24px;flex-wrap:wrap}
  .panel-body{padding:15px 16px}
  .panel-head{padding:13px 16px}
  .invite-code{font-size:22px;letter-spacing:.12em}
}
@media (max-width:560px){
  /* two columns even on phones: one per row wastes a lot of vertical space */
  .stats{grid-template-columns:repeat(2,1fr);gap:10px}
  .stat{padding:14px 15px}
  .stat b{font-size:24px}
  .stat span{font-size:11.5px;margin-top:3px}
  .hero h1{font-size:27px}
  .hero-facts{gap:18px}
  .toast-host{left:14px;right:14px;bottom:14px}
  .tb-credits{display:none}
  .content{padding:14px 12px 34px}
  .topbar{padding:0 12px}
  .tabbar{padding:7px 12px 0}
  .invite-code{font-size:19px;padding:9px 14px}
  .pkg-grid{grid-template-columns:1fr 1fr}
  .table-wrap{border-radius:var(--r-md)}
  table{font-size:13px}
  thead th,tbody td{padding:10px 12px}
}

/* ============================================================ 首页 hero 左列 */
.hero-copy{min-width:0}
.dot{width:9px;height:9px;border-radius:50%;display:inline-block;background:rgba(255,255,255,.16)}
.dot:nth-child(1){background:rgba(255,107,107,.6)}
.dot:nth-child(2){background:rgba(242,169,60,.65)}
.dot:nth-child(3){background:rgba(74,222,128,.6)}
.paper-head em{
  font-style:normal;font-family:var(--mono);font-size:11.5px;
  color:var(--fg-dim2);margin-left:8px;letter-spacing:.04em;
}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center}

/* --- 常见问题 --- */
.faq{display:flex;flex-direction:column;gap:10px;max-width:840px}
.faq details{
  border:1px solid var(--line);border-radius:var(--r-md);
  background:rgba(255,255,255,.014);overflow:hidden;
  transition:border-color .18s var(--ease), background .18s var(--ease);
}
.faq details[open]{border-color:var(--line-2);background:rgba(255,255,255,.028)}
.faq summary{
  padding:14px 18px;cursor:pointer;font-size:14.5px;color:var(--fg-soft);
  font-weight:500;list-style:none;display:flex;align-items:center;gap:11px;
  transition:color .16s var(--ease);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{
  content:"＋";color:var(--amber);font-size:15px;flex:0 0 auto;line-height:1;
  transition:transform .2s var(--ease);
}
.faq details[open] summary::before{content:"－"}
.faq summary:hover{color:var(--fg)}
.faq details p{margin:0;padding:0 18px 16px 45px;color:var(--fg-dim);font-size:13.8px;line-height:1.85}

/* ============================================================ 工作台大纲树 */
.ch{margin-bottom:4px}
.outline-tree .ch > button{
  display:block;width:100%;text-align:left;background:none;border:0;
  color:var(--fg);font-family:var(--serif);font-size:14.5px;font-weight:600;
  padding:8px 4px;cursor:pointer;letter-spacing:.01em;
  transition:color .16s var(--ease);
}
.outline-tree .ch > button:hover{color:var(--amber-2)}
.outline-tree .sec{
  list-style:none;margin:2px 0 10px;padding:0 0 0 10px;
  border-left:1px solid var(--line);
}
.outline-tree .sec li{margin:1px 0}
.sec-btn{
  display:flex;width:100%;gap:9px;align-items:center;padding:8px 11px;
  border:1px solid transparent;border-radius:var(--r-sm);background:none;
  color:var(--fg-dim);font-size:13.2px;cursor:pointer;text-align:left;
  font-family:var(--sans);line-height:1.5;
  transition:background .16s var(--ease), color .16s var(--ease), border-color .16s var(--ease);
}
.sec-btn:hover{background:rgba(255,255,255,.05);color:var(--fg-soft)}
.sec-btn.active{border-color:var(--amber-line);background:var(--amber-soft);color:var(--amber-2)}
.sec-btn .mark{
  width:13px;height:13px;flex:0 0 auto;border-radius:50%;
  border:1.5px solid var(--line-3);transition:.16s var(--ease);
}
.sec-btn.done .mark{
  background:var(--ok);border-color:var(--ok);
  box-shadow:0 0 0 3px rgba(74,222,128,.16);
}
.sec-btn.done{color:var(--fg-soft)}

/* ============================================================ 对比视图（原文 / 改后） */
.row{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:16px}
.col{
  border:1px solid var(--line);border-radius:var(--r-md);padding:14px 16px;
  font-size:13.8px;line-height:1.8;position:relative;overflow:hidden;
}
.col.old{background:rgba(255,107,107,.045);border-color:rgba(255,107,107,.22)}
.col.new{background:rgba(74,222,128,.045);border-color:rgba(74,222,128,.22)}
.col::before{content:"";position:absolute;inset:0 0 auto;height:2px}
.col.old::before{background:rgba(255,107,107,.5)}
.col.new::before{background:rgba(74,222,128,.5)}
.col h4{
  font-family:var(--sans);font-size:11.5px;font-weight:600;letter-spacing:.08em;
  color:var(--fg-dim2);margin:0 0 8px;text-transform:uppercase;
}
.why{
  font-size:13.2px;color:var(--fg-soft);line-height:1.75;
  border-left:2px solid var(--amber-line);padding:9px 0 9px 14px;
  background:rgba(242,169,60,.04);border-radius:0 var(--r-sm) var(--r-sm) 0;
}
.q{border-left:2px solid var(--teal);padding:8px 0 8px 14px;margin-bottom:14px;
  color:var(--fg-soft);font-size:14px;line-height:1.8}
.info{
  font-size:12.5px;color:var(--fg-dim);padding:9px 13px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.025);border:1px solid var(--line);
}
.badge{
  display:inline-flex;align-items:center;gap:5px;font-size:11.5px;
  padding:2.5px 10px;border-radius:999px;
  border:1px solid var(--amber-line);background:var(--amber-soft);color:var(--amber-2);
  font-variant-numeric:tabular-nums;
}
.arrow{color:var(--fg-dim2);flex:0 0 auto;font-size:15px;display:inline-flex;align-items:center}
.chips{display:flex;flex-wrap:wrap;gap:7px;margin:10px 0}
.tools-main{min-width:0}

@media (max-width:820px){
  .row{grid-template-columns:1fr}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
}