/* ============ Design Tokens ============ */
:root{
  --bg:#070b16;
  --surface:rgba(255,255,255,.055);
  --surface-2:rgba(255,255,255,.09);
  --border:rgba(255,255,255,.09);
  --border-strong:rgba(255,255,255,.18);
  --text:#e8edf7;
  --muted:#9aa5bd;
  --faint:#6b7690;
  --accent:#6d8dff;
  --accent-2:#39d0d8;
  --grad:linear-gradient(135deg,#6d8dff 0%,#39d0d8 100%);
  --cat-ai:#a78bfa;
  --cat-ai-2:#7c5cff;
  --cat-dev:#4cc3ff;
  --cat-dev-2:#2b7fff;
  --cat-ecom:#ffb454;
  --cat-ecom-2:#ff8a3d;
  --cat-media:#ff6b9d;
  --cat-media-2:#e54bb4;
  --cat-convert:#3ddc97;
  --cat-convert-2:#15b886;
  --radius:16px;
  --shadow:0 18px 50px -18px rgba(0,0,0,.65);
  --header-bg:rgba(8,12,24,.72);
  --grid:rgba(255,255,255,.028);
  --tint-1:rgba(255,255,255,.03);
  --tint-2:rgba(255,255,255,.01);
  --tint-3:rgba(255,255,255,.065);
  --deep:rgba(255,255,255,.06);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"DM Sans","Segoe UI",system-ui,-apple-system,sans-serif;
  font-size:15px;
  line-height:1.55;
  min-height:100vh;
}
h1,h2,h3,.brand-name{font-family:"Space Grotesk","Segoe UI",sans-serif;line-height:1.2}
button{font-family:inherit;font-size:inherit;color:inherit;cursor:pointer;background:none;border:0}
input,select,textarea{font-family:inherit;font-size:16px;color:var(--text)}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}

/* ============ Background layers ============ */
.bg-layers{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none}
.bg-layers::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),
                   linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:46px 46px;
  mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 30%,transparent 75%);
}
.blob{position:absolute;border-radius:50%;filter:blur(110px)}
.blob-1{width:520px;height:520px;top:-180px;left:-140px;background:#4f6bff;opacity:.20}
.blob-2{width:460px;height:460px;top:-120px;right:-160px;background:#22d3ee;opacity:.14}
.blob-3{width:560px;height:560px;bottom:-260px;left:10%;background:#8b5cf6;opacity:.13}

/* ============ Header ============ */
.header{
  position:sticky;top:0;z-index:60;
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 12px;
  padding:10px 16px;
  background:var(--header-bg);
  border-bottom:1px solid var(--border);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.logo-mark{
  width:34px;height:34px;border-radius:9px;flex:none;
  background:var(--grad);
  display:grid;place-items:center;
  box-shadow:0 6px 18px -6px rgba(80,120,255,.7);
}
.logo-mark svg{width:20px;height:20px}
.brand-name{font-size:17px;font-weight:700;letter-spacing:-.2px;white-space:nowrap}
.brand-name span{color:var(--accent-2)}
.icon-btn{
  width:40px;height:40px;border-radius:10px;flex:none;
  display:grid;place-items:center;
  background:var(--surface);border:1px solid var(--border);
}
.icon-btn:hover{background:var(--surface-2);border-color:var(--border-strong)}
.icon-btn svg{width:19px;height:19px}
.menu-btn{display:grid}
.search-wrap{order:5;flex:1 1 100%;position:relative;min-width:0}
.search-wrap svg{
  position:absolute;left:13px;top:50%;transform:translateY(-50%);
  width:17px;height:17px;color:var(--faint);pointer-events:none;
}
#searchInput{
  width:100%;height:42px;
  padding:0 38px 0 40px;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:11px;
  font-size:16px;
}
#searchInput::placeholder{color:var(--faint)}
#searchInput:focus{border-color:var(--border-strong);background:var(--surface-2);outline:none}
.search-clear{
  position:absolute;right:8px;top:50%;transform:translateY(-50%);
  width:26px;height:26px;border-radius:7px;display:none;place-items:center;color:var(--faint);
}
.search-clear:hover{color:var(--text);background:var(--surface-2)}
.search-clear svg{width:14px;height:14px;position:static;transform:none}
.header-actions{margin-left:auto;display:flex;gap:8px;align-items:center}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 15px;border-radius:11px;
  font-weight:600;font-size:14px;white-space:nowrap;
  border:1px solid transparent;
  transition:transform .15s ease,background .15s ease,border-color .15s ease;
}
.btn svg{width:16px;height:16px}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 22px -8px rgba(80,130,255,.8)}
.btn-primary:hover{transform:translateY(-1px)}
.btn-ghost{background:var(--surface);border-color:var(--border)}
.btn-ghost:hover{background:var(--surface-2);border-color:var(--border-strong)}
.btn-block{width:100%;height:44px}
.btn .label-full{}
@media (max-width:520px){
  .btn{padding:0 12px}
  .btn .btn-label{display:none}
  .brand-name{font-size:15px}
}

/* ============ Layout ============ */
.layout{
  max-width:1360px;margin:0 auto;
  padding:22px 16px 64px;
}
.sidebar-overlay{
  position:fixed;inset:0;z-index:70;
  background:rgba(4,7,16,.6);
  backdrop-filter:blur(3px);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s;
}
.sidebar-overlay.show{opacity:1;visibility:visible}
.sidebar{
  position:fixed;top:0;left:0;bottom:0;z-index:80;
  width:272px;
  padding:76px 14px 22px;
  background:rgba(10,14,28,.92);
  border-right:1px solid var(--border);
  backdrop-filter:blur(18px);
  transform:translateX(-100%);
  transition:transform .28s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;gap:6px;
  overflow-y:auto;
}
.sidebar.open{transform:translateX(0)}
.sidebar-title{
  font-size:11px;font-weight:700;letter-spacing:1.4px;text-transform:uppercase;
  color:var(--faint);padding:6px 12px 8px;
}
.cat-item{
  display:flex;align-items:center;gap:11px;
  width:100%;
  padding:10px 12px;border-radius:11px;
  color:var(--muted);font-weight:500;font-size:14.5px;
  border:1px solid transparent;
  text-align:left;
}
.cat-item svg{width:18px;height:18px;flex:none}
.cat-item .cat-count{margin-left:auto;font-size:12.5px;color:var(--faint);font-weight:600}
.cat-item:hover{background:var(--surface);color:var(--text)}
.cat-item.active{background:var(--surface-2);color:var(--text);border-color:var(--border)}
.cat-item.active .cat-count{color:var(--text)}
.sidebar-foot{margin-top:auto;padding:14px 12px 4px;color:var(--faint);font-size:12.5px;line-height:1.5}

/* ============ Main ============ */
.main{min-width:0}
.ad-banner{
  position:relative;
  border-radius:var(--radius);
  border:1px dashed var(--border-strong);
  background:linear-gradient(160deg,rgba(109,141,255,.10),rgba(57,208,216,.05));
  padding:18px 20px;
  display:flex;align-items:center;gap:14px 16px;flex-wrap:wrap;
  min-height:96px;
  margin-bottom:26px;
  overflow:hidden;
}
.ad-banner::after{
  content:"";position:absolute;right:-60px;top:-60px;width:200px;height:200px;
  background:radial-gradient(circle,rgba(57,208,216,.18),transparent 70%);pointer-events:none;
}
.ad-label{
  flex:none;font-size:10.5px;font-weight:700;letter-spacing:1.2px;text-transform:uppercase;
  color:var(--accent-2);
  border:1px solid rgba(57,208,216,.4);border-radius:999px;padding:4px 10px;
}
.ad-text{min-width:180px;flex:1}
.ad-text strong{display:block;font-family:"Space Grotesk",sans-serif;font-size:15.5px}
.ad-text span{color:var(--muted);font-size:13px}
.ad-cta{flex:none;height:36px;padding:0 14px;border-radius:9px;font-size:13px;font-weight:600;
  background:var(--surface-2);border:1px solid var(--border);display:inline-flex;align-items:center}
.ad-cta:hover{border-color:var(--border-strong)}

/* ============ Ad slots (预留广告位 / 原生推广位) ============ */
.ad-slot{
  position:relative;
  border:1px dashed var(--border-strong);
  border-radius:var(--radius);
  background:linear-gradient(160deg,var(--tint-1),var(--tint-2));
  margin-bottom:26px;
}
.ad-slot__label{
  position:absolute;top:8px;right:12px;z-index:2;
  font-size:9.5px;font-weight:700;letter-spacing:1.4px;text-transform:uppercase;
  color:var(--faint);background:var(--bg);padding:1px 7px;border-radius:6px;
}
.ad-slot__ph{
  color:var(--faint);font-size:13px;font-weight:500;letter-spacing:.3px;
  padding:24px 14px;text-align:center;
}
.ad-slot--leaderboard{min-height:90px;display:flex;align-items:center;padding:0 14px}
.ad-slot--infeed{min-height:250px;border:none;background:transparent;padding:0}
.ad-slot--side{min-height:240px;margin-top:14px;margin-bottom:0;border:none;background:transparent;padding:0}
@media (max-width:1023px){.ad-slot--side{display:none}}

/* 招商位（顶部通栏 Sponsored） */
.promo{display:flex;align-items:center;gap:16px;width:100%;flex-wrap:wrap}
.promo__icon{width:42px;height:42px;flex:none;display:grid;place-items:center;border-radius:12px;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff}
.promo__icon svg{width:22px;height:22px}
.promo__body{flex:1;min-width:150px;text-align:left}
.promo__kicker{font-size:10.5px;font-weight:700;letter-spacing:.6px;text-transform:uppercase;color:var(--accent-2)}
.promo__title{font-size:16px;font-weight:700;color:var(--text);margin:2px 0 3px;line-height:1.25}
.promo__text{font-size:12.5px;color:var(--muted);line-height:1.4}
.promo__cta{flex:none;padding:9px 18px;border-radius:10px;font-weight:600;font-size:13px;
  color:#06121f;background:var(--grad);text-decoration:none;white-space:nowrap}
.promo__cta:hover{filter:brightness(1.08)}

/* 精选工具卡（信息流 / 侧栏）：复用 .card 外观 */
.ad-slot--infeed .card,.ad-slot--side .card{margin:0;height:100%}
.ad-slot--infeed .card .card-actions,.ad-slot--side .card .card-actions{margin-top:auto}

.section-head{display:flex;align-items:baseline;gap:12px;margin-bottom:16px;flex-wrap:wrap}
.section-head h1{font-size:21px;margin:0;letter-spacing:-.3px}
.result-count{color:var(--faint);font-size:13.5px}

.cards-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
}
@media (min-width:560px){.cards-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.cards-grid{grid-template-columns:repeat(3,1fr)}}
@media (min-width:1280px){.cards-grid{grid-template-columns:repeat(4,1fr)}}

/* ============ Card ============ */
.card{
  position:relative;
  display:flex;flex-direction:column;gap:9px;
  padding:18px 16px 15px;
  border-radius:var(--radius);
  background:linear-gradient(160deg,var(--tint-3),var(--tint-2));
  border:1px solid var(--border);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.card:hover{transform:translateY(-3px);border-color:var(--border-strong);box-shadow:var(--shadow)}
.card-icon{
  width:44px;height:44px;border-radius:12px;flex:none;
  display:grid;place-items:center;
  background:linear-gradient(145deg,color-mix(in srgb,var(--c1) 26%,transparent),color-mix(in srgb,var(--c2) 14%,transparent));
  border:1px solid color-mix(in srgb,var(--c1) 35%,transparent);
  color:var(--c1);
}
.card-icon svg{width:22px;height:22px}
.card h3{margin:2px 0 0;font-size:15.5px;font-weight:600;letter-spacing:-.15px}
.card-desc{
  margin:0;color:var(--muted);font-size:13.5px;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  min-height:40px;
}
.tags{display:flex;flex-wrap:wrap;gap:6px}
.tag{
  font-size:11.5px;font-weight:500;color:var(--muted);
  background:var(--surface);border:1px solid var(--border);
  border-radius:999px;padding:2.5px 9px;
}
.card-actions{margin-top:6px;display:flex;gap:8px;align-items:center}
.open-btn{
  flex:1;height:38px;border-radius:10px;
  font-weight:600;font-size:13.5px;
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  background:var(--surface-2);border:1px solid var(--border);
}
.open-btn svg{width:15px;height:15px}
.open-btn:hover{background:var(--grad);border-color:transparent;color:#fff}
.info-btn{
  width:38px;height:38px;border-radius:10px;flex:none;
  display:grid;place-items:center;
  background:var(--surface);border:1px solid var(--border);color:var(--muted);
}
.info-btn:hover{color:var(--text);border-color:var(--border-strong)}
.info-btn svg{width:16px;height:16px}
mark{background:rgba(57,208,216,.3);color:var(--text);border-radius:3px;padding:0 2px}

.empty-state{
  grid-column:1/-1;
  text-align:center;padding:70px 20px;
  border:1px dashed var(--border);border-radius:var(--radius);
  color:var(--muted);
}
.empty-state svg{width:42px;height:42px;color:var(--faint);margin-bottom:12px}
.empty-state strong{display:block;color:var(--text);font-family:"Space Grotesk",sans-serif;font-size:16px;margin-bottom:4px}
.empty-state button{color:var(--accent-2);font-weight:600;margin-top:10px}

/* ============ Footer ============ */
.footer{
  border-top:1px solid var(--border);
  margin-top:40px;padding:26px 16px;
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:center;
  color:var(--faint);font-size:13.5px;
}
.footer a:hover{color:var(--text)}
.footer-sep{opacity:.5}

/* ============ Modal ============ */
.modal-overlay{
  position:fixed;inset:0;z-index:100;
  display:grid;place-items:center;
  padding:18px;
  background:rgba(4,7,16,.7);
  backdrop-filter:blur(6px);
  opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s;
}
.modal-overlay.show{opacity:1;visibility:visible}
.modal{
  width:100%;max-width:480px;max-height:90vh;overflow-y:auto;
  border-radius:18px;
  background:linear-gradient(165deg,rgba(22,28,48,.95),rgba(12,16,30,.95));
  border:1px solid var(--border-strong);
  box-shadow:0 30px 80px -20px rgba(0,0,0,.8);
  padding:22px;
  transform:translateY(14px) scale(.98);
  transition:transform .24s cubic-bezier(.4,0,.2,1);
}
.modal-overlay.show .modal{transform:none}
.modal-head{display:flex;align-items:flex-start;gap:14px;margin-bottom:16px}
.modal-icon{
  width:46px;height:46px;border-radius:12px;flex:none;
  display:grid;place-items:center;
  background:linear-gradient(145deg,color-mix(in srgb,var(--c1,var(--accent)) 28%,transparent),color-mix(in srgb,var(--c2,var(--accent-2)) 14%,transparent));
  border:1px solid color-mix(in srgb,var(--c1,var(--accent)) 40%,transparent);
  color:var(--c1,var(--accent));
}
.modal-icon svg{width:23px;height:23px}
.modal-title{margin:0;font-size:18px;font-weight:600}
.modal-sub{color:var(--muted);font-size:13px;margin-top:2px}
.modal-close{
  margin-left:auto;flex:none;width:34px;height:34px;border-radius:9px;
  display:grid;place-items:center;color:var(--muted);
  background:var(--surface);border:1px solid var(--border);
}
.modal-close:hover{color:var(--text);border-color:var(--border-strong)}
.modal-close svg{width:16px;height:16px}
.modal-body{display:flex;flex-direction:column;gap:14px}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:13px;font-weight:600;color:var(--muted)}
.field input,.field select,.field textarea{
  width:100%;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:10px;
  padding:10px 12px;
  font-size:15px;
}
.field textarea{min-height:84px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--border-strong);background:var(--surface-2)}
.field select{appearance:none}
.field select option{background:var(--bg)}
.form-error{color:#ff7a90;font-size:13px;display:none}

/* password tool */
.pw-output{
  display:flex;gap:8px;
  background:var(--surface);border:1px solid var(--border);border-radius:11px;padding:8px 8px 8px 13px;
  align-items:center;
}
.pw-output code{
  flex:1;font-family:"Space Grotesk",monospace;font-size:14.5px;word-break:break-all;
  letter-spacing:.5px;min-width:0;
}
.pw-copy{flex:none;width:34px;height:34px;border-radius:8px;display:grid;place-items:center;background:var(--surface-2);border:1px solid var(--border)}
.pw-copy:hover{border-color:var(--border-strong)}
.pw-copy svg{width:15px;height:15px}
.range-row{display:flex;align-items:center;gap:12px}
.range-row input[type=range]{flex:1;accent-color:var(--accent)}
.range-val{min-width:30px;text-align:right;font-weight:600;font-family:"Space Grotesk",sans-serif}
.check-grid{display:grid;grid-template-columns:1fr 1fr;gap:9px}
.check-item{
  display:flex;align-items:center;gap:9px;
  background:var(--surface);border:1px solid var(--border);border-radius:10px;
  padding:10px 12px;font-size:13.5px;cursor:pointer;
}
.check-item input{accent-color:var(--accent);width:16px;height:16px}
.detail-meta{display:flex;flex-wrap:wrap;gap:6px}

/* json tool */
.json-area{
  width:100%;min-height:120px;resize:vertical;
  background:var(--surface);border:1px solid var(--border);border-radius:11px;
  padding:11px 12px;font-family:"Space Grotesk",monospace;font-size:13px;line-height:1.55;
}
.json-area:focus{outline:none;border-color:var(--border-strong)}
.json-result{
  min-height:90px;max-height:260px;overflow:auto;
  background:rgba(5,8,18,.7);border:1px solid var(--border);border-radius:11px;
  padding:11px 12px;font-family:"Space Grotesk",monospace;font-size:13px;white-space:pre-wrap;word-break:break-all;
  display:none;
}
.json-result.show{display:block}
.json-error{color:#ff7a90;font-size:13px;display:none;line-height:1.5}
.row-actions{display:flex;gap:8px}
.row-actions .btn{flex:1;height:40px}

/* ============ Toast ============ */
.toast{
  position:fixed;left:50%;bottom:26px;z-index:200;
  transform:translate(-50%,18px);
  background:rgba(18,24,42,.92);
  border:1px solid var(--border-strong);
  backdrop-filter:blur(14px);
  border-radius:12px;
  padding:11px 17px;
  font-size:14px;font-weight:500;
  box-shadow:0 16px 40px -12px rgba(0,0,0,.7);
  opacity:0;visibility:hidden;
  transition:opacity .25s,transform .25s,visibility .25s;
  max-width:92vw;text-align:center;
}
.toast.show{opacity:1;visibility:visible;transform:translate(-50%,0)}

@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}

/* ============ Desktop: static sidebar ============ */
@media (min-width:1024px){
  .layout{display:grid;grid-template-columns:236px 1fr;gap:30px;padding-top:30px}
  .sidebar{
    position:static;transform:none;
    width:auto;padding:0;
    background:none;border:0;backdrop-filter:none;
    align-self:start;
    position:sticky;top:92px;
    max-height:calc(100vh - 110px);
  }
  .sidebar-overlay{display:none}
  .menu-btn{display:none}
  .search-wrap{order:0;flex:0 1 400px;margin:0 auto}
  .header{padding:11px 24px;gap:14px}
}

/* ================= 浅色主题 ================= */
html[data-theme="light"]{
  --bg:#f7f8fc;
  --surface:rgba(15,23,42,.045);
  --surface-2:rgba(15,23,42,.075);
  --border:rgba(15,23,42,.10);
  --border-strong:rgba(15,23,42,.20);
  --text:#111827;
  --muted:#4b5563;
  --faint:#6b7280;
  --accent:#3b5bdb;
  --accent-2:#0d8b93;
  --grad:linear-gradient(135deg,#3b5bdb 0%,#0d8b93 100%);
  --header-bg:rgba(255,255,255,.86);
  --grid:rgba(15,23,42,.05);
  --tint-1:rgba(15,23,42,.030);
  --tint-2:rgba(15,23,42,.008);
  --tint-3:rgba(15,23,42,.055);
  --deep:rgba(15,23,42,.05);
  --shadow:0 18px 40px -24px rgba(15,23,42,.30);
  --cat-ai:#7c3aed;--cat-ai-2:#6d28d9;
  --cat-dev:#0284c7;--cat-dev-2:#1d4ed8;
  --cat-ecom:#b45309;--cat-ecom-2:#c2410c;
  --cat-media:#be185d;--cat-media-2:#a21caf;
  --cat-convert:#047857;--cat-convert-2:#0f766e;
}
html[data-theme="light"] .blob{opacity:.055}
html[data-theme="light"] .blob-1{background:#93b4ff}
html[data-theme="light"] .blob-2{background:#8ee7f2}
html[data-theme="light"] .blob-3{background:#c9b6ff}
html[data-theme="light"] .logo-mark{box-shadow:0 6px 16px -8px rgba(59,91,219,.55)}
html[data-theme="light"] .ad-slot,.ad-banner{border-color:var(--border)}
html[data-theme="light"] .card{box-shadow:0 10px 26px -22px rgba(15,23,42,.35)}

/* ================= 主题切换按钮 ================= */
.theme-toggle{display:grid;place-items:center}
.theme-toggle svg{width:19px;height:19px}
html[data-theme="dark"] .theme-toggle .i-sun{display:block}
html[data-theme="dark"] .theme-toggle .i-moon{display:none}
html[data-theme="light"] .theme-toggle .i-sun{display:none}
html[data-theme="light"] .theme-toggle .i-moon{display:block}

/* ================= 内页通用 ================= */
.wrap{max-width:860px;margin:0 auto;padding:26px 20px 72px}
.crumbs{display:flex;flex-wrap:wrap;gap:6px;align-items:center;font-size:12.5px;color:var(--faint);margin-bottom:16px}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--accent)}
.crumbs span.sep{opacity:.5}
.page-title{font-family:"Space Grotesk","Segoe UI",sans-serif;font-size:clamp(25px,4.6vw,34px);
  line-height:1.16;letter-spacing:-.5px;margin:0 0 12px;color:var(--text)}
.lede{font-size:16px;color:var(--muted);line-height:1.62;margin:0 0 22px;max-width:70ch}
.kicker{font-size:11px;font-weight:700;letter-spacing:.9px;text-transform:uppercase;color:var(--accent-2);margin-bottom:9px}

/* 正文 */
.prose{color:var(--muted);font-size:15px;line-height:1.75}
.prose h2{font-family:"Space Grotesk","Segoe UI",sans-serif;color:var(--text);font-size:20px;margin:34px 0 10px;letter-spacing:-.2px}
.prose h3{font-family:"Space Grotesk","Segoe UI",sans-serif;color:var(--text);font-size:16px;margin:24px 0 8px}
.prose p{margin:0 0 13px}
.prose ul,.prose ol{margin:0 0 14px;padding-left:20px}
.prose li{margin-bottom:7px}
.prose a{color:var(--accent);text-decoration:underline;text-underline-offset:2px}
.prose strong{color:var(--text);font-weight:600}
.prose code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9em;
  background:var(--surface);border:1px solid var(--border);border-radius:5px;padding:1px 5px;color:var(--text)}

/* 参数表 */
.spec{width:100%;border-collapse:separate;border-spacing:0;margin:6px 0 24px;font-size:14px;
  border:1px solid var(--border);border-radius:12px;overflow:hidden}
.spec th,.spec td{padding:11px 14px;text-align:left;vertical-align:top;border-bottom:1px solid var(--border)}
.spec tr:first-child th:first-child,.spec tr:first-child td:first-child{border-top-left-radius:11px}
.spec tr:first-child th:last-child,.spec tr:first-child td:last-child{border-top-right-radius:11px}
.spec tr:last-child th,.spec tr:last-child td{border-bottom:0}
.spec th{width:31%;color:var(--faint);font-weight:500;background:var(--surface);white-space:nowrap}
.spec td{color:var(--text)}
.spec td small{display:block;color:var(--muted);font-size:12.5px;margin-top:2px}

/* 提示块 */
.callout{border:1px solid var(--border);border-left:3px solid var(--accent);
  background:var(--surface);border-radius:10px;padding:13px 16px;margin:0 0 20px;
  font-size:14px;color:var(--muted);line-height:1.6}
.callout strong{color:var(--text)}

/* 按钮行 */
.btnrow{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 8px}
.btn-solid,.btn-line{display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 20px;
  border-radius:11px;font-weight:600;font-size:14px;text-decoration:none;transition:.15s}
.btn-solid{background:var(--grad);color:#06121f}
.btn-solid:hover{filter:brightness(1.08)}
.btn-line{border:1px solid var(--border-strong);color:var(--text);background:var(--surface)}
.btn-line:hover{background:var(--surface-2)}
.btn-solid svg,.btn-line svg{width:16px;height:16px}

/* 关联卡片 */
.related{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;margin:8px 0 4px}
.relcard{display:block;padding:14px 16px;border:1px solid var(--border);border-radius:12px;
  background:var(--surface);text-decoration:none;transition:.15s}
.relcard:hover{background:var(--surface-2);border-color:var(--border-strong);transform:translateY(-1px)}
.relcard b{display:block;color:var(--text);font-size:14.5px;margin-bottom:3px;font-weight:600}
.relcard span{display:block;color:var(--muted);font-size:12.5px;line-height:1.5}

/* FAQ */
.faq{margin:8px 0 4px;border-top:1px solid var(--border)}
.faq details{border-bottom:1px solid var(--border);padding:13px 0}
.faq summary{cursor:pointer;color:var(--text);font-weight:600;font-size:14.5px;list-style:none;
  display:flex;justify-content:space-between;gap:12px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--accent);font-size:18px;line-height:1;flex:none}
.faq details[open] summary::after{content:"–"}
.faq p{margin:10px 0 0;color:var(--muted);font-size:14px;line-height:1.7}

/* 站内工具面板 */
.toolbox{border:1px solid var(--border);border-radius:14px;background:var(--surface);
  padding:18px;margin:0 0 26px}
.toolbox label{display:block;font-size:12.5px;color:var(--faint);margin:0 0 6px;font-weight:600;
  letter-spacing:.3px;text-transform:uppercase}
.toolbox textarea,.toolbox input[type=text],.toolbox input[type=number],.toolbox select{
  width:100%;background:var(--bg);border:1px solid var(--border);border-radius:9px;padding:11px 13px;
  color:var(--text);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13.5px;
  line-height:1.6;resize:vertical}
.toolbox textarea:focus,.toolbox input:focus,.toolbox select:focus{outline:none;border-color:var(--border-strong)}
.toolbox .row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:12px}
.toolbox .row > *{flex:0 0 auto}
.mini-btn{height:38px;padding:0 15px;border-radius:9px;border:1px solid var(--border-strong);
  background:var(--surface-2);color:var(--text);font-size:13px;font-weight:600}
.mini-btn:hover{border-color:var(--accent);color:var(--accent)}
.mini-btn.primary{background:var(--grad);color:#06121f;border:0}
.out{margin-top:14px;background:var(--bg);border:1px solid var(--border);border-radius:9px;
  padding:12px 14px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;
  color:var(--text);word-break:break-all;min-height:44px;white-space:pre-wrap}
.hint{font-size:12px;color:var(--faint);margin-top:8px}
.err{color:#e5484d}

/* 页面页脚 */
.site-footer{border-top:1px solid var(--border);margin-top:40px;padding:26px 20px 40px;
  text-align:center;font-size:13px;color:var(--faint)}
.site-footer a{color:var(--muted);text-decoration:none}
.site-footer a:hover{color:var(--accent)}
.site-footer .fnav{display:flex;flex-wrap:wrap;gap:8px 14px;justify-content:center;margin-bottom:10px}

/* 列表页 */
.itemlist{display:grid;gap:10px;margin:6px 0 24px}
.itemrow{display:flex;gap:14px;align-items:flex-start;padding:14px 16px;border:1px solid var(--border);
  border-radius:12px;background:var(--surface);text-decoration:none;transition:.15s}
.itemrow:hover{background:var(--surface-2);border-color:var(--border-strong)}
.itemrow .n{width:26px;flex:none;color:var(--faint);font-size:13px;font-variant-numeric:tabular-nums;padding-top:1px}
.itemrow .b{min-width:0}
.itemrow b{display:block;color:var(--text);font-size:14.5px;margin-bottom:2px;font-weight:600}
.itemrow span{display:block;color:var(--muted);font-size:13px;line-height:1.55}
.tagsrow{display:flex;flex-wrap:wrap;gap:7px;margin:0 0 22px}
.tagpill{font-size:12px;padding:5px 11px;border-radius:999px;border:1px solid var(--border);
  color:var(--muted);background:var(--surface);text-decoration:none}
.tagpill:hover{border-color:var(--accent);color:var(--accent)}
.tagpill.on{background:var(--accent);color:#fff;border-color:var(--accent)}

@media(max-width:640px){
  .wrap{padding:20px 16px 60px}
  .spec th{width:42%;white-space:normal}
}

/* 内页导航 */
.subnav{display:flex;gap:16px;margin-left:auto;font-size:13.5px;align-items:center}
.subnav a{color:var(--muted);text-decoration:none;white-space:nowrap}
.subnav a:hover{color:var(--accent)}
@media(max-width:820px){.subnav{display:none}}
@media(min-width:821px){.header .theme-toggle{margin-left:4px}}

/* 卡片标题链到条目页 */
.card h3 a{color:inherit;text-decoration:none}
.card h3 a:hover{color:var(--accent)}