/* ============================================================
   AI 直航 · 样式表（单文件，构建期原样复制到 dist/assets/css/style.css）
   组织顺序（设计 spec §10）：
   tokens → base/reset → topbar/nav → buttons → hero/search
   → sections/chips → cards → crumb → detail → category
   → submit → footer → toast → @media 1079 → @media 899 → @media 599
   → prefers-reduced-motion
   断点只写 max-width：-1 值：1079 / 899 / 599
   颜色/圆角/阴影/时长一律用 var(--*)；除 #fff 与 rgba 透明层外不写裸色
   禁止 ID 选择器；!important 仅允许出现在 prefers-reduced-motion 块
   ============================================================ */

/* ---------- 1. Design Tokens ---------- */
:root{
  /* 品牌与中性色 */
  --brand:#0f6cbd;
  --brand-hover:#0a5aa0;
  --brand-ink:#0a4f8c;
  --brand-soft:#e8f2fb;
  --brand-softer:#f4f9fd;
  --brand-line:#cfe4f7;
  --teal:#0e9384;
  --ink-1:#11161c;
  --ink-2:#3d4854;
  --ink-3:#6a7683;
  --ink-4:#9aa5b1;            /* 仅装饰（箭头/分隔），不承载文字 */
  --line-1:#e5ebf1;
  --line-2:#eef2f6;
  --line-3:#dce4ec;
  --surface:#ffffff;
  --canvas:#f6f8fa;
  /* 语义色 */
  --accent:#e8590c;
  --accent-ink:#c2410c;
  --accent-soft:#fff2e8;
  --accent-line:#ffdcc4;
  --success:#1a7f4b;
  --success-soft:#eaf7f0;
  --success-line:#cdebd9;
  --danger:#c0392b;
  --danger-soft:#fdecea;
  --danger-line:#e08b83;
  --warning:#b45309;
  --paid:#6b46d6;
  --paid-soft:#f3efff;
  /* 圆角 */
  --r-xs:4px; --r-sm:8px; --r-md:12px; --r-lg:16px; --r-pill:999px;
  /* 阴影 */
  --sh-1:0 1px 2px rgba(17,22,28,.05);
  --sh-2:0 4px 14px rgba(17,22,28,.07);
  --sh-3:0 12px 32px rgba(17,22,28,.13);
  /* 动效 */
  --ease:cubic-bezier(.22,1,.36,1);
  --t-fast:140ms; --t-mid:240ms; --t-active:80ms;
  /* 层级 / 容器 */
  --z-topbar:60; --z-detail-bar:70; --z-toast:200; --maxw:1680px;
  /* 居中留白：内容列 70%、两侧各 15%（视口 ≤2400 时严格 15%）；超宽屏由 --maxw 封顶 */
  --gutter:max(20px, 15vw);
  /* 字体 */
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,"SF Mono",Consolas,monospace;
}

/* ---------- 2. Base / Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; scroll-padding-top:80px; }
body{
  margin:0; font-family:var(--font); font-size:15px; line-height:1.65;
  color:var(--ink-2); background:var(--surface);
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,p,figure,ol,ul,blockquote{margin:0}
h1,h2,h3,h4{color:var(--ink-1); letter-spacing:0; font-weight:700}
a{color:var(--brand); text-decoration:none}
a:hover{color:var(--brand-hover)}
img,svg{display:block; max-width:100%}
button{font-family:inherit}
ul,ol{padding:0; list-style:none}
:focus-visible{outline:2px solid var(--brand); outline-offset:2px; border-radius:var(--r-xs)}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

.wrap{width:calc(100% - 2*var(--gutter)); max-width:var(--maxw); margin:0 auto; padding:0}
.wrap--narrow{max-width:760px}
.wrap--faq{max-width:860px}
main{min-height:60vh}

/* ---------- 3. Topbar / Nav ---------- */
.topbar{
  position:sticky; top:0; z-index:var(--z-topbar);
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(8px);
  -webkit-backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid var(--line-1);
  transition:box-shadow var(--t-fast) var(--ease), background var(--t-fast);
}
.topbar.is-solid{box-shadow:var(--sh-1); background:#fff}
.topbar__in{
  display:flex; align-items:center; gap:16px;
  height:62px; width:calc(100% - 2*var(--gutter)); max-width:var(--maxw); margin:0 auto; padding:0;
}
.logo{display:flex; align-items:center; gap:8px; color:var(--ink-1)}
.logo__svg{flex:0 0 auto}
.logo__word{font-size:18px; font-weight:800; color:var(--ink-1); letter-spacing:0}
.logo__word em{font-style:normal; color:var(--brand)}
.nav{display:flex; gap:4px; margin-left:8px}
.nav a{
  padding:8px 12px; border-radius:var(--r-sm); font-size:14px; color:var(--ink-2);
  font-weight:500; transition:background var(--t-fast),color var(--t-fast);
}
.nav a:hover{background:var(--brand-softer); color:var(--brand)}
.nav a[aria-current="page"]{color:var(--brand); background:var(--brand-softer); font-weight:600}
.topbar__right{margin-left:auto; display:flex; align-items:center; gap:10px}
.burger{
  display:none; width:40px; height:40px; align-items:center; justify-content:center;
  border:0; background:transparent; color:var(--ink-2); cursor:pointer; border-radius:var(--r-sm);
}
.burger:hover{background:var(--brand-softer)}
.burger svg{display:block}

/* ---------- 4. Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:6px;
  height:40px; padding:0 16px; border:1px solid transparent; border-radius:var(--r-sm);
  font-size:14px; font-weight:600; cursor:pointer; white-space:nowrap;
  transition:background var(--t-fast) var(--ease), color var(--t-fast) var(--ease),
             border-color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease),
             box-shadow var(--t-fast) var(--ease);
}
.btn--cta{background:var(--brand); color:#fff; box-shadow:0 6px 16px rgba(15,108,189,.28)}
.btn--cta:hover{background:var(--brand-hover); color:#fff; transform:translateY(-1px); box-shadow:0 8px 20px rgba(15,108,189,.36)}
.btn--cta:active{background:#094d8a; color:#fff; transform:translateY(0); box-shadow:0 2px 6px rgba(15,108,189,.2); transition-duration:var(--t-active)}
.btn--ghost{background:#fff; color:var(--ink-2); border-color:var(--line-1)}
.btn--ghost:hover{background:#fafcfd; color:var(--ink-1); border-color:#cfd9e3}
.btn--ghost:active{background:#f1f5f9; transition-duration:var(--t-active)}
.btn--go{background:var(--brand-softer); color:var(--brand); border-color:var(--brand-line)}
.btn--go:hover{background:var(--brand); color:#fff; border-color:var(--brand)}
.btn--go:hover svg{transform:translateX(2px)}
.btn--go svg{transition:transform var(--t-fast) var(--ease)}
/* 详情页「官方电脑端下载」：与主 CTA 同款品牌蓝，hover 上浮 + 箭头右移 */
.btn--download:hover{background:var(--brand-hover); color:#fff; transform:translateY(-2px); box-shadow:0 12px 26px rgba(15,108,189,.4)}
.btn--download:active{background:#094d8a; color:#fff; transform:translateY(0); box-shadow:0 2px 6px rgba(15,108,189,.2); transition-duration:var(--t-active)}
.btn--download svg{transition:transform var(--t-fast) var(--ease)}
.btn--download:hover svg{transform:translateX(3px)}
/* 速览卡内两个按钮的箭头同步做位移动效 */
.promo__cta .btn--cta svg{transition:transform var(--t-fast) var(--ease)}
.promo__cta .btn--cta:hover svg{transform:translateX(3px)}
/* 黑色导流按钮：滚动吸顶条与「核心功能」后的钩子卡片共用，hover 上浮 + 箭头右移 */
.btn--dark{background:var(--ink-1); color:#fff; box-shadow:0 3px 10px rgba(17,22,28,.18)}
.btn--dark:hover{background:var(--ink-2); color:#fff; transform:translateY(-1px); box-shadow:0 8px 20px rgba(17,22,28,.28)}
.btn--dark:active{transform:translateY(0); box-shadow:0 2px 6px rgba(17,22,28,.16); transition-duration:var(--t-active)}
.btn--dark svg{transition:transform var(--t-fast) var(--ease)}
.btn--dark:hover svg{transform:translateX(3px)}
.btn--lg{height:48px; padding:0 22px; font-size:15px}
.btn--block{width:100%}
/* 品牌底上的白焦点环（spec §6.5） */
.btn--cta:focus-visible,.search__go:focus-visible,.cta-band .btn:focus-visible{outline-color:#fff}
.btn[disabled]{background:#9dc4e8; color:#fff; cursor:not-allowed; box-shadow:none; transform:none}

/* ---------- 5. Hero / Search ---------- */
.hero{
  padding:66px 0 54px;
  /* 参考稿口径：顶部一线淡蓝（左蓝、右微青）向下渐隐到白，约 70% 高度处过渡完成 */
  background:
    radial-gradient(110% 110% at 88% 0%, rgba(14,147,132,.07), transparent 44%),
    radial-gradient(110% 110% at 8% 0%, rgba(15,108,189,.10), transparent 46%),
    linear-gradient(180deg, var(--brand-soft) 0%, #fff 72%);
  border-bottom:1px solid var(--line-1);
}
.hero__in{max-width:880px; margin:0 auto; padding:0 24px; text-align:center}
.hero h1{font-size:38px; line-height:1.16; font-weight:800; color:var(--ink-1)}
.hero h1 em{font-style:normal; color:var(--brand)}
.hero__tag{margin:16px auto 0; max-width:560px; font-size:15px; color:var(--ink-2)}
.hero__tag b{color:var(--ink-1)}
.search{
  display:flex; align-items:center; gap:8px; height:56px; margin:24px auto 0; max-width:680px;
  padding:0 8px 0 14px; background:#fff; border:1px solid var(--line-3); border-radius:var(--r-pill);
  box-shadow:0 10px 28px rgba(17,22,28,.10), 0 2px 8px rgba(17,22,28,.04);
  transition:border-color var(--t-fast), box-shadow var(--t-fast);
}
.search:focus-within{border-color:var(--brand); box-shadow:0 0 0 3px rgba(15,108,189,.12)}
.search__icon{color:var(--ink-3); flex:0 0 auto}
.search input{
  flex:1; min-width:0; border:0; outline:0; background:transparent; font-size:14px; color:var(--ink-1);
}
.search input::placeholder{color:var(--ink-3)}
.search__go{
  height:44px; padding:0 20px; border:0; border-radius:var(--r-pill);
  background:var(--brand); color:#fff; font-weight:600; font-size:14px; cursor:pointer;
  transition:background var(--t-fast);
}
.search__go:hover{background:var(--brand-hover)}
.search--sm{height:50px; max-width:none}
.search--sm .search__go{height:38px; padding:0 16px}
/* 页头内嵌搜索（分类页 / 全部工具页）：原型口径 560px 定宽 */
.pagehead .search--sm{max-width:560px; margin:18px 0 0}
.chips{display:flex; flex-wrap:wrap; justify-content:center; gap:8px; margin-top:16px}
/* Hero 下的场景词：截图口径的小号胶囊 */
.hero .chip{height:32px; padding:0 13px; font-size:12.5px}
.chip{
  display:inline-flex; align-items:center; gap:6px; height:36px; padding:0 15px;
  background:#fff; border:1px solid var(--line-3); border-radius:var(--r-pill);
  font-size:13px; color:var(--ink-2); cursor:pointer;
  transition:background var(--t-fast), border-color var(--t-fast), color var(--t-fast);
}
.chip b{font-weight:600; color:var(--ink-1)}
.chip:hover{border-color:#b9d6f0; color:var(--brand)}
.chip[aria-current="true"]{background:var(--brand-soft); border-color:var(--brand-line); color:var(--brand); font-weight:600}
.chip:active{background:var(--brand-softer); transition-duration:var(--t-active)}
.chip .count{font-style:normal; font-size:11px; color:var(--ink-3); font-family:var(--mono); font-variant-numeric:tabular-nums}
.chip[aria-current="true"] .count{color:var(--brand)}

/* ---------- 6. Sections / Chips axis ---------- */
.sec{padding:52px 0}
.sec--sm{padding:34px 0}
/* 本周热度榜模块专用背景带（分类页/列表页底部复用） */
.sec--rank{background:linear-gradient(180deg,#f7fafe,#eef4fb); border-top:1px solid var(--line-1)}
.sec--canvas{background:var(--canvas); border-top:1px solid var(--line-1); border-bottom:1px solid var(--line-1)}
.sec__head{display:flex; align-items:baseline; flex-wrap:wrap; gap:8px 16px; margin-bottom:20px}
.sec__head h2{font-size:21px; line-height:1.4; font-weight:700; display:flex; align-items:center; gap:8px}
.sec__head p{font-size:13px; color:var(--ink-3); margin-left:auto}
.sec__head .sec__more{margin-left:auto; font-size:13px; font-weight:600; color:var(--brand); white-space:nowrap}
.sec__head p + .sec__more{margin-left:0}
.dot{width:6px; height:18px; border-radius:3px; background:var(--brand); display:inline-block; flex:0 0 auto}
.tabs{display:flex; flex-wrap:wrap; gap:8px; margin-bottom:20px}
.tab{
  padding:7px 14px; border-radius:var(--r-pill); border:1px solid var(--line-3);
  font-size:13px; color:var(--ink-2); background:#fff; transition:all var(--t-fast);
}
.tab:hover{border-color:var(--brand-line); color:var(--brand)}
.tab[aria-current="page"],.tab.is-active{background:var(--brand-soft); border-color:var(--brand-line); color:var(--brand); font-weight:600}

/* ---------- 7. Cards ---------- */
/* [hidden] 兜底：.card / .grid 等自带 display 的组件会盖掉 UA 的 [hidden]{display:none}，
   这里用同等或更高优先级显式声明，保证 JS 切 hidden 真的能隐藏 */
[hidden]{display:none}
.card[hidden], .grid[hidden], .cat-group[hidden], .empty[hidden]{display:none}

.grid{display:grid; grid-template-columns:repeat(4,1fr); gap:16px}
.grid--list{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
.grid--3{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}

.card{
  display:flex; flex-direction:column; gap:12px; background:var(--surface);
  border:1px solid var(--line-1); border-radius:var(--r-md); padding:18px;
  box-shadow:var(--sh-2);
  transition:transform var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease), border-color var(--t-fast);
}
.card--tool:hover{transform:translateY(-3px); box-shadow:var(--sh-3); border-color:#d6e4f2}
.card--tool:focus-within{outline:2px solid var(--brand); outline-offset:2px; border-radius:var(--r-md)}
.card__top{display:flex; align-items:center; gap:12px; min-width:0}
.mark{width:42px; height:42px; border-radius:11px; object-fit:cover; background:var(--line-2); flex:0 0 auto}
.card__head{min-width:0}
.card__name{font-size:16px; line-height:1.4; font-weight:700; color:var(--ink-1)}
.card__sub{font-size:12.5px; color:var(--ink-3); margin-top:2px}
.card__desc{font-size:13px; line-height:1.6; color:var(--ink-2)}
.card__meta{display:flex; flex-wrap:wrap; gap:6px}
.card__action{
  display:flex; align-items:center; justify-content:center; width:100%; height:38px; margin-top:auto;
  background:var(--brand-soft); color:var(--brand); border-radius:var(--r-sm);
  font-size:13.5px; font-weight:600;
  transition:background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
.card__action:hover{background:var(--brand); color:#fff}
.card__rowsub{display:none}

.cat-card{
  display:flex; flex-direction:column; gap:6px; background:var(--surface);
  border:1px solid var(--line-1); border-radius:var(--r-md); padding:18px;
  transition:transform var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease), border-color var(--t-fast);
}
.cat-card:hover{transform:translateY(-2px); box-shadow:var(--sh-2); border-color:var(--brand-line)}
.cat-card__t{font-size:17px; font-weight:700; color:var(--ink-1)}
.cat-card__d{font-size:13px; line-height:1.5; color:var(--ink-3)}
.cat-card__m{margin-top:4px; font-size:13px; font-weight:600; color:var(--brand)}

/* pills */
.pill{
  display:inline-flex; align-items:center; height:20px; padding:0 9px; border-radius:var(--r-pill);
  font-size:11px; font-weight:600; line-height:1; white-space:nowrap;
}
.pill--new{background:var(--brand-soft); color:var(--brand-ink); border:1px solid #cfe3f7}
.pill--desk{background:var(--canvas); color:var(--ink-3); border:1px solid var(--line-2)}
.pill--free{background:var(--success-soft); color:var(--success); border:1px solid var(--success-line)}
.pill--paid{background:var(--paid-soft); color:var(--paid); border:1px solid #e3dcf7}
.pill--hot{background:var(--accent-soft); color:var(--accent-ink); border:1px solid var(--accent-line)}

/* ---------- 8. Crumb ---------- */
.crumb{padding:18px 0 0}
.crumb ol{display:flex; flex-wrap:wrap; align-items:center; gap:6px; font-size:12.5px; color:var(--ink-3)}
.crumb li{display:flex; align-items:center; gap:6px}
.crumb li+li::before{content:"/"; color:var(--ink-4)}
.crumb a{color:var(--ink-3)}
.crumb a:hover{color:var(--brand)}
.crumb [aria-current="page"]{color:var(--ink-2); font-weight:600}
/* 面包屑移入 pagehead 渐变背景内时，去掉顶部留白、留出与标题的间隔 */
.pagehead .crumb{padding:0 0 14px}

/* ---------- 9. Detail page ---------- */
/* 滚动吸顶导流条：默认收起（隐藏 + 不可聚焦），app.js 加 .is-visible 才滑入。
   详情页专用，其它页面不渲染该 DOM；覆盖 topbar 而不是叠在其下方，避免两层顶栏。 */
.detail-bar{
  position:fixed; left:0; right:0; top:0; z-index:var(--z-detail-bar);
  background:#fff; border-bottom:1px solid var(--line-1); box-shadow:var(--sh-2);
  transform:translateY(-102%); opacity:0; visibility:hidden; pointer-events:none;
  transition:transform var(--t-mid) var(--ease), opacity var(--t-mid) var(--ease), visibility var(--t-mid);
}
.detail-bar.is-visible{transform:translateY(0); opacity:1; visibility:visible; pointer-events:auto}
.detail-bar__in{display:flex; align-items:center; gap:10px; height:60px}
.detail-bar__logo{width:32px; height:32px; border-radius:9px; object-fit:cover; background:var(--line-2); flex:0 0 auto}
.detail-bar__name{font-size:17px; font-weight:800; color:var(--ink-1); white-space:nowrap; flex:0 0 auto}
.detail-bar__meta{font-size:12.5px; color:var(--ink-3); white-space:nowrap; overflow:hidden; text-overflow:ellipsis; min-width:0}
/* 视觉交给共用的 .btn--dark，这里只负责吸顶条内的尺寸与靠右布局 */
.detail-bar__cta{margin-left:auto; flex:0 0 auto; height:36px; padding:0 18px; border-radius:var(--r-sm); font-size:14px; font-weight:700}

.detail{padding:36px 0 52px}
.detail__grid{display:grid; grid-template-columns:1fr 320px; gap:32px; align-items:start}
.detail__main{min-width:0}
.prose h2{font-size:21px; line-height:1.4; font-weight:700; margin:30px 0 12px}
.prose h2:first-child{margin-top:0}
.prose p{font-size:14.5px; line-height:1.8; color:var(--ink-2); margin:10px 0}
.prose ul{margin:10px 0; display:flex; flex-direction:column; gap:8px}
.prose ul li{position:relative; padding-left:18px; font-size:14.5px; line-height:1.8; color:var(--ink-2)}
.prose ul li::before{content:""; position:absolute; left:4px; top:11px; width:6px; height:6px; border-radius:50%; background:var(--brand-line)}
.feature-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:14px; margin:14px 0}
/* 核心功能后的导流钩子：浅灰卡片，左侧点题 + 右侧黑色 CTA（与吸顶条共用 .btn--dark） */
.feature-hook{
  display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap;
  margin:0; padding:18px 20px;
  background:var(--canvas); border:1px solid var(--line-1); border-radius:var(--r-md);
}
.feature-hook__txt{display:flex; flex-direction:column; gap:4px; min-width:0}
.feature-hook__t{font-size:15px; font-weight:700; color:var(--ink-1); line-height:1.5}
.feature-hook__d{font-size:13px; color:var(--ink-3); line-height:1.6}
.feature-hook__cta{flex:0 0 auto; padding:0 20px}
.feature{background:var(--surface); border:1px solid var(--line-1); border-radius:var(--r-md); padding:16px}
.feature h4{display:flex; align-items:center; gap:8px; font-size:15px; font-weight:700; color:var(--ink-1); margin-bottom:6px}
.feature .k{
  width:22px; height:22px; flex:0 0 auto; border-radius:50%; background:var(--brand-soft); color:var(--brand);
  font-size:12px; font-weight:700; display:inline-flex; align-items:center; justify-content:center; font-family:var(--mono);
}
.feature p{font-size:13.5px; line-height:1.6; color:var(--ink-2); margin:0}
.steps{margin:14px 0; padding:0; list-style:none; counter-reset:s; display:flex; flex-direction:column; gap:14px}
.steps li{position:relative; padding-left:42px; counter-increment:s}
.steps li::before{
  content:counter(s); position:absolute; left:0; top:0; width:28px; height:28px; border-radius:50%;
  background:var(--brand); color:#fff; font-weight:700; font-size:13px; display:flex; align-items:center; justify-content:center; font-family:var(--mono);
}
.steps h4{font-size:15px; font-weight:700; color:var(--ink-1); margin-bottom:4px}
.steps p{font-size:13.5px; line-height:1.6; color:var(--ink-2); margin:0}
.table{width:100%; border-collapse:collapse; margin:12px 0; font-size:14px}
.table th{text-align:left; width:84px; vertical-align:top; padding:12px 12px 12px 0; color:var(--ink-3); font-weight:600; font-size:13px}
.table td{padding:12px 0; border-top:1px solid var(--line-2); vertical-align:top}
.table tr:first-child td{border-top:0}
.mini{display:flex; flex-direction:column; gap:6px}
.mini li{position:relative; padding-left:16px; font-size:13.5px; line-height:1.6; color:var(--ink-2)}
.mini li::before{content:""; position:absolute; left:2px; top:9px; width:5px; height:5px; border-radius:50%; background:var(--line-3)}

/* 适合谁 / 不适合谁：双列卡片，绿底=适合，白底=不适合 */
.fit{display:grid; grid-template-columns:1fr 1fr; gap:14px; margin:14px 0 4px}
.fit__col{border-radius:var(--r-md); padding:18px}
.fit__col--yes{background:var(--brand-soft); border:1px solid var(--brand-line)}
.fit__col--no{background:var(--surface); border:1px solid var(--line-1)}
.fit__hd{font-size:14px; font-weight:700; color:var(--ink-1); margin:0 0 10px}
.fit__list{list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:10px}
.fit__list li{position:relative; padding-left:22px; font-size:14px; line-height:1.6; color:var(--ink-2)}
.fit__list li::before{position:absolute; left:2px; top:-1px; font-weight:700; font-family:var(--mono); font-size:15px; line-height:1.4}
.fit__list--yes li::before{content:"+"; color:var(--brand)}
.fit__list--no li::before{content:"–"; color:var(--ink-4)}

/* 优缺点：双列，优点绿点 / 不足橙点 + 规避建议（绿字 →） */
.pc{display:grid; grid-template-columns:1fr 1fr; gap:28px; margin:14px 0 0}
.pc__hd{font-size:15px; font-weight:700; color:var(--ink-1); margin:0 0 4px}
.pc__list{list-style:none; margin:0; padding:0; display:flex; flex-direction:column}
.pc__col .pc__list li{position:relative; padding:10px 0 10px 18px; border-top:1px solid var(--line-2); font-size:14px; line-height:1.6; color:var(--ink-2)}
.pc__col .pc__list li:first-child{border-top:0; padding-top:4px}
.pc__col .pc__list li::before{content:""; position:absolute; left:2px; top:17px; width:6px; height:6px; border-radius:50%}
.pc__col--pro .pc__list li::before{background:var(--success)}
.pc__col--con .pc__list li::before{background:var(--accent)}
.pc__con{display:block}
.pc__fix{display:block; margin-top:4px; font-size:13px; line-height:1.55; color:var(--success)}

/* 优缺点下方引导钩子：绿底横幅 + 深色 CTA */
.verdict{display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap; margin-top:18px; padding:18px 22px; background:var(--brand-soft); border:1px solid var(--brand-line); border-radius:var(--r-md)}
.verdict__t{font-size:15px; font-weight:700; color:var(--ink-1); line-height:1.5}
.verdict__d{display:block; margin-top:3px; font-size:13px; color:var(--ink-3); line-height:1.5}
.verdict__cta{flex:0 0 auto; padding:0 20px}
.verdict__cta svg{transition:transform var(--t-fast) var(--ease)}
.verdict__cta:hover svg{transform:translateX(3px)}

/* 章节小标号（适合谁 / 优缺点 上方） */
.sec-kicker{display:block; font-size:12px; font-weight:700; letter-spacing:.04em; color:var(--ink-3); margin-bottom:2px; font-family:var(--mono)}
.faq{display:flex; flex-direction:column; border-top:1px solid var(--line-2)}
.faq details{border-bottom:1px solid var(--line-2)}
.faq summary,.faq--page summary{
  display:flex; align-items:center; justify-content:space-between; gap:12px; padding:14px 2px;
  cursor:pointer; list-style:none; font-size:15px; font-weight:600; color:var(--ink-1);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:""; width:8px; height:8px; border-right:1.8px solid var(--ink-3); border-bottom:1.8px solid var(--ink-3);
  transform:rotate(45deg) translateY(-2px); transition:transform var(--t-fast); flex:0 0 auto;
}
.faq details[open] summary::after{transform:rotate(225deg)}
.faq details p{padding:0 2px 14px; font-size:14px; line-height:1.7; color:var(--ink-2)}
.faq--page{border-top:0; margin-top:8px}

/* 首页：按场景找工具（图标卡 + 深底 CTA 卡） */
.sec__kicker{display:block; font-size:13px; font-weight:700; color:var(--brand); letter-spacing:.02em; margin-bottom:7px}
.sec__head--split{display:flex; align-items:flex-end; justify-content:space-between; gap:14px 24px; flex-wrap:wrap; margin-bottom:22px}
.sec__head--split .sec__head-note{margin:0; font-size:13px; line-height:1.5; color:var(--ink-3); max-width:300px; text-align:right}
.scen-grid{gap:16px}
.scen-card{display:flex; flex-direction:column; min-height:154px; background:#fff; border:1px solid var(--line-2); border-radius:var(--r-lg); padding:22px 20px; text-decoration:none; transition:transform var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease)}
.scen-card:hover{transform:translateY(-2px); box-shadow:var(--sh-2); border-color:var(--brand-line)}
.scen-card__ic{width:42px; height:42px; border-radius:12px; background:var(--brand-soft); color:var(--brand); display:flex; align-items:center; justify-content:center; margin-bottom:15px}
.scen-card__ic svg{width:22px; height:22px; display:block}
.scen-card__t{font-size:16px; font-weight:700; color:var(--ink-1); margin-bottom:6px}
.scen-card__d{font-size:13px; line-height:1.5; color:var(--ink-3); margin-bottom:auto; padding-bottom:14px}
.scen-card__m{font-size:13px; font-weight:600; color:var(--brand)}
.scen-card--cta{background:#1a1f2e; border-color:#1a1f2e; justify-content:flex-start}
.scen-card--cta:hover{transform:translateY(-2px); box-shadow:var(--sh-2); border-color:#1a1f2e}
.scen-card__cta-t{font-size:17px; font-weight:700; color:#fff; margin-bottom:8px}
.scen-card__cta-d{font-size:13px; line-height:1.5; color:rgba(255,255,255,.72); margin:0 0 16px}
.scen-card__cta-btn{margin-top:auto; align-self:flex-start; background:#fff; color:#1a1f2e; font-size:13px; font-weight:600; border-radius:var(--r-pill); padding:9px 16px; text-decoration:none; white-space:nowrap; transition:background var(--t-fast)}
.scen-card--cta:hover .scen-card__cta-btn{background:#eef2f7}

/* 首页：这个站怎么选工具（左说明 + 右 FAQ + 通栏 CTA） */
.about{display:grid; grid-template-columns:4fr 6fr; gap:40px; align-items:start}
.about__title{font-size:30px; line-height:1.25; font-weight:800; color:var(--ink-1); margin:0 0 14px}
.about__lead{font-size:14.5px; line-height:1.85; color:var(--ink-2); margin:0 0 18px}
.about__note{background:#F5F7FA; border-radius:var(--r-md); padding:16px 18px; font-size:14px; line-height:1.7; color:var(--ink-2); font-weight:600; margin:0 0 14px}
.about__note b{color:var(--ink-1); font-weight:800}
.about__link{display:inline-block; font-size:14px; font-weight:600; color:var(--brand); text-decoration:none}
.about__link:hover{text-decoration:underline}
.about__cta{display:flex; align-items:center; justify-content:space-between; gap:18px 24px; flex-wrap:wrap; background:#EAF3FB; border-radius:var(--r-lg); padding:22px 26px; margin-top:30px}
.about__cta-t{font-size:17px; font-weight:700; color:var(--ink-1); margin-bottom:6px}
.about__cta-d{font-size:13px; line-height:1.5; color:var(--ink-3); margin:0; max-width:580px}
.about__cta-btn{background:#1a1f2e; color:#fff; font-size:14px; font-weight:600; border-radius:var(--r-pill); padding:11px 20px; text-decoration:none; white-space:nowrap; transition:background var(--t-fast)}
.about__cta-btn:hover{background:#2a3142}
.faq--plus summary::after{content:"+"; width:22px; height:22px; border:0; transform:none; display:flex; align-items:center; justify-content:center; border-radius:50%; background:var(--brand-soft); color:var(--brand); font-size:17px; font-weight:700; line-height:1; flex:0 0 auto; transition:background var(--t-fast),color var(--t-fast)}
.faq--plus details[open] summary::after{content:"\2212"; background:var(--brand); color:#fff}

/* sidebar */
.side{display:flex; flex-direction:column; gap:16px; position:sticky; top:86px}
.panel{background:var(--surface); border:1px solid var(--line-1); border-radius:var(--r-md); overflow:hidden}
.panel__hd{display:flex; align-items:center; gap:8px; padding:14px 16px; font-size:14px; font-weight:700; color:var(--ink-1); border-bottom:1px solid var(--line-2)}
.panel__hd-note{margin-left:auto; font-size:11.5px; font-weight:500; color:var(--ink-4)}
.panel__bd{padding:8px 16px 14px}
.spec{display:flex; flex-direction:column}
.spec li{display:flex; justify-content:space-between; gap:12px; padding:9px 0; border-bottom:1px solid var(--line-2); font-size:13px}
.spec li:last-child{border-bottom:0}
.spec li span:first-child{color:var(--ink-3); flex:0 0 auto}
.spec li span:last-child{color:var(--ink-1); text-align:right; font-weight:500}
.spec--flat li{border-bottom:0; padding:8px 0}
.spec-stats{display:grid; grid-template-columns:repeat(3,1fr); border-bottom:1px solid var(--line-2); margin:2px 0 6px; padding-bottom:10px}
.spec-stats__item{display:flex; flex-direction:column; align-items:center; gap:3px; border-left:1px solid var(--line-2); padding:2px 4px; min-width:0}
.spec-stats__item:first-child{border-left:0}
.spec-stats__v{font-size:15px; font-weight:700; color:var(--ink-1); line-height:1.35; word-break:break-word; overflow-wrap:anywhere}
.spec-stats__k{font-size:11px; color:var(--ink-4)}
/* 侧栏产品卡：基本信息重做（图标+名称+核心功能+按钮 → 三列概览 → 6 行列表） */
.panel__bd--product{padding-top:16px}
.pp{display:flex; align-items:center; gap:12px; margin-bottom:10px}
.pp__logo{width:48px; height:48px; border-radius:12px; object-fit:cover; background:var(--line-2); flex:0 0 auto}
.pp__head{min-width:0}
.pp__name{font-size:20px; font-weight:800; color:var(--ink-1); line-height:1.2}
.pp__sub{font-size:12.5px; color:var(--ink-3); margin-top:2px}
.pp__desc{font-size:13.5px; line-height:1.65; color:var(--ink-2); margin:0 0 12px}
.pp__cta{margin-bottom:14px}
.btn--block{width:100%; justify-content:center}
.s-item{
  display:flex; align-items:center; gap:10px; padding:9px 8px; margin:0 -8px; border-radius:var(--r-sm);
  transition:background var(--t-fast);
}
.s-item:hover{background:var(--brand-softer)}
.s-item__t{display:flex; flex-direction:column; min-width:0; flex:1}
.s-item__n{font-size:14px; font-weight:600; color:var(--ink-1)}
.s-item__d{font-size:12px; color:var(--ink-3); white-space:nowrap; overflow:hidden; text-overflow:ellipsis}
.s-item__go{font-size:12px; font-weight:600; color:var(--brand)}

/* promo (hero feature card + detail speed card) */
.promo{
  display:grid; grid-template-columns:1.15fr .85fr; gap:32px; align-items:center;
  background:linear-gradient(120deg,#fff,#f4f9fd); border:1px solid var(--line-1);
  border-radius:var(--r-lg); padding:32px; box-shadow:var(--sh-1);
}
.promo--detail{background:linear-gradient(120deg,#f4f9fd,#eef6ff)}
/* 详情页速览卡顶部品牌条：产品图标 + 产品名 */
.promo__brand{display:flex; align-items:center; gap:12px; margin:0 0 16px}
.promo__brand-logo{width:44px; height:44px; border-radius:12px; object-fit:cover; background:var(--line-2); flex:0 0 auto}
/* 第一行品牌条：只放图标 + 纯产品名，不承载 H1；min-width:0 允许窄屏安全收缩 */
.promo__brand-name{margin:0; min-width:0; font-size:28px; line-height:1.2; font-weight:800; color:var(--ink-1); letter-spacing:-.3px}
.promo__label{
  display:inline-flex; align-items:center; gap:5px; font-size:12px; font-weight:600; color:var(--accent-ink);
  background:var(--accent-soft); border:1px solid var(--accent-line); padding:4px 10px; border-radius:var(--r-pill);
}
/* 详情页 H1 / 首页 H2 共用。注意：下一行 .promo__body>p 特异性更高，
   若把标题标签改回 <p> 会被压成 14.5px 灰字——详情页标题必须用 h1/h2，不能是 p。 */
.promo__title{font-size:22px; line-height:1.35; font-weight:800; color:var(--ink-1); margin:12px 0 8px}
.promo__body>p{font-size:14.5px; line-height:1.7; color:var(--ink-2)}
.promo__rating{display:inline-flex; align-items:center; gap:6px; flex-wrap:wrap; margin-top:12px; font-size:13px; color:var(--ink-2)}
.promo__rating .stars{color:var(--warning); letter-spacing:1px; font-size:14px}
.promo__rating b{color:var(--ink-1); font-family:var(--mono); font-variant-numeric:tabular-nums}
.promo__meta{margin-top:14px; color:var(--ink-3); font-size:12.5px; line-height:1.6}
.promo__spec{margin-top:10px; font-size:12.5px; color:var(--ink-3); line-height:1.5}
.promo__cta{display:flex; align-items:center; gap:14px; flex-wrap:wrap; margin-top:18px}
.promo__note{font-size:12px; color:var(--ink-3); max-width:300px; line-height:1.5}
.promo__note .stars{color:var(--warning); letter-spacing:1px; font-size:13px; margin-right:3px}
/* 详情页速览卡有两个按钮，评分说明不再与按钮并排，独占一行避免被挤成窄列 */
.promo--detail .promo__cta .promo__note{flex:0 0 100%; max-width:none; margin-top:-2px}
.promo__art{order:2}
.promo__art svg{width:100%; height:auto; max-width:320px; margin:0 auto}
/* promo 与下方区块标题的间距（首页 promo 嵌在工具区内） */
.promo + .sec__head{margin-top:34px}

/* cta-card：详情页底部「下一步」引导卡（2026-11-10 重做，浅灰居中卡片） */
.cta-card{
  width:100%; margin:0 auto; text-align:center;
  background:linear-gradient(120deg,#f6f9fd,#eef6ff);
  border:1px solid var(--brand-line); border-radius:var(--r-lg);
  padding:34px 28px 30px;
}
.cta-card__kicker{display:inline-block; font-size:13px; font-weight:700; letter-spacing:.05em; color:var(--brand); margin-bottom:10px}
.cta-card__t{font-size:26px; font-weight:800; color:var(--ink-1); line-height:1.3; margin:0 0 10px}
.cta-card__s{max-width:540px; margin:0 auto 18px; font-size:14px; line-height:1.65; color:var(--ink-3)}
.cta-card__btn{margin:0 auto}
.cta-card__note{margin:14px 0 0; font-size:12px; line-height:1.5; color:var(--ink-4)}

/* ---------- 10. Category / Tools list layout ---------- */
.pagehead{
  padding:38px 0 22px;
  background:linear-gradient(180deg,#eef4fb 0%,#f6fafe 58%,#ffffff 100%);
  border-bottom:1px solid var(--line-1);
}
.pagehead h1{font-size:28px; line-height:1.3; font-weight:800; color:var(--ink-1)}
.pagehead p{margin-top:10px; font-size:15px; line-height:1.7; color:var(--ink-2); max-width:760px}

/* 工具列表页头部：左文案 + 右搜索/统计卡（图 2） */
.pagehead__row{display:flex; align-items:flex-start; justify-content:space-between; gap:32px; flex-wrap:wrap}
.pagehead__main{flex:1 1 420px; min-width:0}
.pagehead__meta{font-size:13px; color:var(--ink-3); margin-bottom:10px}
.pagehead__meta a{color:var(--brand); font-weight:600; text-decoration:none}
.pagehead__meta a:hover{text-decoration:underline}
.pagehead__desc{margin-top:10px; font-size:15px; line-height:1.7; color:var(--ink-2); max-width:620px}
.pagehead__side{flex:0 0 auto; width:300px; max-width:100%}
.pagehead__side .search--sm{margin:0 0 14px; max-width:none; height:46px}
.pagehead__side .search__go{background:var(--ink-1); color:#fff}
.pagehead__side .search__go:hover{background:var(--ink-2)}
.statcards{display:flex; border:1px solid var(--line-1); border-radius:var(--r-md); overflow:hidden}
.statcards__item{flex:1; padding:12px 8px; text-align:center; border-left:1px solid var(--line-2)}
.statcards__item:first-child{border-left:0}
.statcards__item b{display:block; font-size:20px; font-weight:800; color:var(--ink-1); line-height:1.1; font-variant-numeric:tabular-nums}
.statcards__item span{font-size:11.5px; color:var(--ink-3)}
.pagehead__kicker{font-size:13px; font-weight:700; color:var(--brand); letter-spacing:.02em; margin-bottom:8px}
.pagehead__kicker span{font-variant-numeric:tabular-nums}
.pagehead__side--note{flex:0 0 auto; width:340px; max-width:100%; text-align:right}
.pagehead__side--note p{font-size:13.5px; line-height:1.6; color:var(--ink-3); margin:0}

.cat-grid{display:grid; grid-template-columns:216px 1fr; gap:40px; align-items:start; margin-top:30px; padding-bottom:52px}
.filter{display:flex; flex-direction:column; gap:18px; position:sticky; top:86px}
.filter--aux{position:static; gap:14px; padding-top:8px; border-top:1px solid var(--line-2)}
.filter__group h2{font-size:12px; font-weight:700; letter-spacing:.08em; text-transform:uppercase; color:var(--ink-3); margin-bottom:10px}
/* 分类页左栏：纵向文字列表（原型口径） */
.filter--list .filter__group + .filter__group{margin-top:22px}
.filter__list{display:flex; flex-direction:column; gap:2px}
.filter__list a{
  display:flex; align-items:center; gap:8px; padding:7px 10px; border-radius:7px;
  font-size:13.5px; line-height:1.5; color:var(--ink-2);
  transition:background var(--t-fast), color var(--t-fast);
}
.filter__list a:hover{background:#f4f7fa; color:var(--ink-1)}
.filter__list a[aria-current="true"]{background:var(--brand-soft); color:var(--brand); font-weight:600}
.filter__list .count{
  margin-left:auto; font-style:normal; font-size:11.5px; color:var(--ink-4);
  font-family:var(--mono); font-variant-numeric:tabular-nums;
}
.filter__list a[aria-current="true"] .count{color:var(--brand)}

/* 工具列表页左栏：卡片化筛选（图 3） */
.filter--tools{background:#fff; border:1px solid var(--line-1); border-radius:var(--r-lg); padding:18px 18px 6px; gap:0}
.filter--tools .filter__bar-head{display:flex; align-items:center; justify-content:space-between; padding-bottom:12px; margin-bottom:14px; border-bottom:1px solid var(--line-2)}
.filter--tools .filter__bar-head h2{font-size:16px; font-weight:700; color:var(--ink-1); letter-spacing:0; text-transform:none}
.filter--tools .filter-clear{margin-left:0; font-size:12.5px; color:var(--brand); white-space:nowrap}
.filter--tools .filter-clear:hover{text-decoration:underline}
.filter--tools .filter__group{margin-bottom:18px}
.filter--tools .filter__group + .filter__group{margin-top:0}
.filter--tools .filter__group h2{font-size:12px; font-weight:700; letter-spacing:.08em; text-transform:uppercase; color:var(--ink-3); margin-bottom:8px}
.filter--tools .filter__list{gap:2px}
.filter--tools .filter__list a{display:flex; align-items:center; justify-content:space-between; gap:8px; padding:9px 12px; border-radius:var(--r-md); font-size:14px; color:var(--ink-2)}
.filter--tools .filter__list a:hover{background:#f4f7fa; color:var(--ink-1)}
.filter--tools .filter__list a[aria-current="true"]{background:var(--ink-1); color:#fff; font-weight:600}
.filter--tools .filter__list a[aria-current="true"] .count{color:rgba(255,255,255,.72)}
.filter--tools .filter__list .count{margin-left:auto; font-style:normal; color:var(--ink-3)}
.filter--tools .opt--disabled{display:flex; align-items:center; justify-content:space-between; padding:9px 12px; font-size:14px; color:var(--ink-4)}
.filter--tools .tag-prep{font-size:11px; color:var(--ink-4); background:var(--line-2); border-radius:var(--r-pill); padding:2px 8px; white-space:nowrap}
.chips-row{display:flex; flex-wrap:wrap; gap:8px}
.chips-scroll{position:relative; overflow-x:auto; scrollbar-width:none; -webkit-overflow-scrolling:touch; padding-bottom:4px}
.chips-scroll::-webkit-scrollbar{display:none}
.chips-scroll::after{
  content:""; position:absolute; top:0; right:0; bottom:4px; width:32px;
  background:linear-gradient(90deg,rgba(255,255,255,0),var(--surface)); pointer-events:none;
}
.filter--aux .chips-scroll::after{background:linear-gradient(90deg,rgba(255,255,255,0),var(--surface))}
.filter-more>summary{
  display:inline-flex; align-items:center; gap:8px; height:36px; padding:0 16px; margin:12px 0 4px;
  border:1px solid var(--line-1); border-radius:var(--r-pill); background:#fff; font-size:13px; font-weight:600; color:var(--ink-2);
  cursor:pointer; list-style:none;
}
.filter-more>summary::-webkit-details-marker{display:none}
.filter-more>summary::after{
  content:""; width:8px; height:8px; border-right:1.8px solid var(--ink-3); border-bottom:1.8px solid var(--ink-3);
  transform:rotate(45deg) translateY(-1px); transition:transform var(--t-fast);
}
.filter-more[open]>summary::after{transform:rotate(225deg)}
.filter-more[open]>summary{color:var(--brand); border-color:var(--brand-line)}
.filter-more .filter__group{padding:12px 0 4px}
.filter-more .filter__group+.filter__group{margin-top:12px}

/* list-head */
.list-main{min-width:0}
.list-head{display:flex; align-items:center; gap:12px; flex-wrap:wrap; margin-bottom:16px}
.list-head h2{font-size:19px; font-weight:700; color:var(--ink-1)}
.list-head .n{font-size:13px; color:var(--ink-3)}
.list-head .n b{color:var(--ink-1); font-family:var(--mono); font-variant-numeric:tabular-nums}
.list-head .sort{margin-left:auto; font-size:13px; color:var(--ink-3); display:flex; align-items:center; gap:6px}
.select{
  height:34px; padding:0 28px 0 10px; border:1px solid var(--line-3); border-radius:var(--r-sm);
  background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%236a7683' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat right 10px center;
  font-size:13px; color:var(--ink-1); cursor:pointer; -webkit-appearance:none; appearance:none;
}
.filter-clear{font-size:12.5px; color:var(--ink-3); margin-left:auto}
.list-head .sort+.filter-clear{margin-left:0}
.filter-clear:hover{color:var(--brand); text-decoration:underline}
.empty{padding:28px; text-align:center; color:var(--ink-3); font-size:14px; border:1px dashed var(--line-3); border-radius:var(--r-md)}
.empty a{color:var(--brand); font-weight:600}

/* rank */
.rank-table{width:100%; border-collapse:collapse; font-size:14px}
.rank-card{background:#fff; border:1px solid var(--line-1); border-radius:var(--r-lg); box-shadow:0 1px 3px rgba(16,24,40,.06); overflow:hidden}
/* 排行榜完整列表：限定高度 + 滚动条（表头吸顶） */
.rank-card--scroll{max-height:560px; overflow-y:auto; overflow-x:hidden}
.rank-card--scroll .rank-table thead th{position:sticky; top:0; background:#fff; z-index:2; box-shadow:0 1px 0 var(--line-1)}
.rank-card--scroll::-webkit-scrollbar{width:10px}
.rank-card--scroll::-webkit-scrollbar-track{background:transparent}
.rank-card--scroll::-webkit-scrollbar-thumb{background:#d4dbe6; border-radius:8px; border:2px solid #fff}
.rank-card--scroll::-webkit-scrollbar-thumb:hover{background:#bcc6d6}
.rank-table caption{text-align:left; font-size:12.5px; color:var(--ink-3); padding-bottom:10px; line-height:1.5}
.rank-table th{
  text-align:left; font-size:12px; font-weight:700; color:var(--ink-3); padding:11px 14px;
  background:#f6f8fb; border-bottom:1px solid var(--line-2); white-space:nowrap;
}
.rank-table td{padding:14px; border-bottom:1px solid var(--line-2); vertical-align:middle}
.rank-table tr:hover td{background:var(--brand-softer)}
.rank-table tr[data-href]{cursor:pointer}
.rank-table tr[data-href]:hover .tool__txt a{text-decoration:underline}
.rk-badge{
  display:inline-flex; align-items:center; justify-content:center; min-width:28px; height:28px; padding:0 6px;
  border-radius:8px; font-family:var(--mono); font-weight:700; font-size:15px; font-variant-numeric:tabular-nums;
  background:#f1f4f8; border:1px solid #e6ecf2; color:var(--ink-2);
}
.rank-table tr:nth-child(-n+3) .rk-badge{background:#fdf3dc; border-color:#f0e2b6; color:#8a6d1f}
.rank-table .tool{display:flex; align-items:center; gap:12px}
.rank-table .tool__txt{display:flex; flex-direction:column; min-width:0}
.rank-table .tool__txt a{font-size:15px; font-weight:700; color:var(--ink-1)}
.rank-table .tool__txt a:hover{color:var(--brand)}
.rank-table .tool__sub{font-size:12px; color:var(--ink-3)}
.rank-table .cat,.rank-table .price{color:var(--ink-2); white-space:nowrap}
.rank-table .score{white-space:nowrap; text-align:right}
.rank-table .score b{font-family:var(--mono); font-size:18px; font-weight:800; font-variant-numeric:tabular-nums; color:var(--ink-1)}
/* 7 日名次：上移=红、下移=绿（国内涨跌配色） */
.src-badge{display:inline-flex; align-items:center; font-size:12px; font-weight:600; padding:3px 10px; border-radius:var(--r-pill); white-space:nowrap; line-height:1.4}
.src-badge--hands{background:var(--success-soft); color:var(--success); border:1px solid #cdeadd}
.src-badge--desk{background:#f1f4f8; color:var(--ink-3); border:1px solid var(--line-2)}
.rank-table th:last-child{text-align:right}
.rank-table .trend-cell{text-align:right; white-space:nowrap}
.trend{display:inline-flex; align-items:center; gap:2px; font-family:var(--mono); font-size:12.5px; font-weight:700; font-variant-numeric:tabular-nums}
.trend b{font-size:9px; line-height:1; transform:translateY(-.5px)}
.trend--up{color:var(--accent-ink)}
.trend--down{color:var(--success)}
.trend--flat{color:var(--ink-3); font-weight:400}
.rank-foot{display:flex; align-items:center; justify-content:space-between; gap:16px; margin-top:16px}
.rank-foot p{margin:0; font-size:12.5px; line-height:1.6; color:var(--ink-3)}
.rank-foot p b{color:var(--ink-2); font-weight:600}
.rank-foot__more{color:var(--brand); font-weight:600; font-size:13.5px; white-space:nowrap; text-decoration:none}
.rank-foot__more:hover{text-decoration:underline}
.rank-cta{background:#e8f0fe; margin-top:40px}
.rank-cta__inner{display:flex; align-items:center; justify-content:space-between; gap:20px; padding:26px 0}
.rank-cta__txt h2{margin:0; font-size:17px; font-weight:800; color:var(--ink-1)}
.rank-cta__txt p{margin:5px 0 0; font-size:13px; line-height:1.6; color:var(--ink-3)}
.rank-cta .btn--cta{flex:0 0 auto}

/* 置顶合作位（设计稿 category 列表顶部） */
.adcard{
  display:flex; align-items:center; gap:16px; padding:16px 18px; margin-bottom:16px;
  border:1px solid #d8e7f5; border-radius:var(--r-md);
  background:linear-gradient(180deg,#fbfdff,#fff); box-shadow:var(--sh-1);
}
.adcard__main{flex:1; min-width:0}
.adcard .mark{width:48px; height:48px; border-radius:13px; font-size:20px}
.adcard h3{margin:3px 0 4px; font-size:16px; font-weight:700}
.adcard h3 .ad-badge{
  display:inline-flex; align-items:center; font-size:10.5px; font-weight:700; color:var(--accent);
  background:var(--accent-soft); border:1px solid var(--accent-line); padding:1.5px 7px; border-radius:var(--r-pill);
  margin-left:7px; vertical-align:2px;
}
.adcard p{margin:0; font-size:13px; color:var(--ink-2)}
.ad-flag{font-size:10.5px; font-weight:700; color:var(--ink-3); background:#eef2f6; border:1px solid #e2e9f0; padding:1px 6px; border-radius:4px}

/* 分页器（占位：真实仅 1 页） */
.pager{display:flex; align-items:center; gap:6px; justify-content:center; margin-top:28px}
.pager a,.pager span{
  min-width:34px; height:34px; display:grid; place-items:center; padding:0 10px;
  border:1px solid var(--line-1); border-radius:8px; font-size:13px; color:var(--ink-2); background:#fff;
}
.pager a:hover{border-color:#b9d6f0; color:var(--brand)}
.pager [aria-current="page"]{background:var(--brand); border-color:var(--brand); color:#fff; font-weight:600}

/* rank summary panel */
.rank-summary .rs{display:flex; flex-direction:column; gap:2px; margin:0; counter-reset:r}
.rank-summary .rs li{display:flex; align-items:center; gap:10px; padding:8px 0; border-bottom:1px solid var(--line-2)}
.rank-summary .rs li:last-child{border-bottom:0}
.rs__no{
  width:24px; height:24px; flex:0 0 auto; border-radius:50%; background:var(--brand-soft); color:var(--brand);
  font-family:var(--mono); font-weight:700; font-size:12px; display:flex; align-items:center; justify-content:center;
}
.rank-summary .rs a{font-size:14px; font-weight:600; color:var(--ink-1)}
.rank-summary .rs a:hover{color:var(--brand)}
.rs__r{margin-left:auto; font-size:12px; color:var(--ink-3); white-space:nowrap}

/* category groups */
.cat-group{margin:28px 0}
.cat-group:first-of-type{margin-top:8px}
.cat-group h2{font-size:21px; line-height:1.4; font-weight:700; color:var(--ink-1); margin-bottom:20px; display:flex; align-items:center; gap:8px}
.cat-group h3{font-size:17px; line-height:1.4; font-weight:700; color:var(--ink-1); margin-bottom:14px; display:flex; align-items:center; gap:8px}
.cat-group h3::before{content:""; width:3px; height:15px; border-radius:2px; background:var(--brand-line); flex:0 0 auto}
.cat-group .sec__head{margin-bottom:16px}
.placeholder-note{margin-top:16px; padding:14px 16px; background:var(--accent-soft); border:1px solid var(--accent-line); border-radius:var(--r-md); font-size:14px; color:#8a3b0a; line-height:1.6}

/* ---------- 11. Submit form ---------- */
.form-grid{display:grid; grid-template-columns:1fr 320px; gap:40px; align-items:start}
.form-card{background:var(--surface); border:1px solid var(--line-1); border-radius:var(--r-lg); padding:24px; position:relative}
.field{margin-bottom:16px}
.field--row{display:grid; grid-template-columns:1fr 1fr; gap:14px; margin-bottom:16px}
.field--row>.field{margin-bottom:0}
.field>label{display:block; font-size:13px; font-weight:600; color:var(--ink-1); margin-bottom:6px}
.field .req{color:var(--accent-ink); margin-left:2px}
.field .helper{margin-top:6px; font-size:12px; color:var(--ink-3); line-height:1.5}
.input,.textarea,.select--full{
  width:100%; border:1px solid var(--line-3); border-radius:var(--r-sm); background:#fff; color:var(--ink-1);
  font-size:14px; padding:10px 12px; transition:border-color var(--t-fast), box-shadow var(--t-fast);
}
.input:focus,.textarea:focus,.select--full:focus{border-color:var(--brand); box-shadow:0 0 0 3px rgba(15,108,189,.12); outline:none}
.input::placeholder,.textarea::placeholder{color:var(--ink-3)}
.textarea{resize:vertical; min-height:84px; line-height:1.6}
.select--full{height:42px; appearance:none; -webkit-appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%236a7683' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat; background-position:right 12px center; padding-right:32px;
}
.radio-row{display:flex; gap:16px; flex-wrap:wrap}
.radio{display:inline-flex; align-items:center; gap:6px; font-size:14px; color:var(--ink-2); cursor:pointer}
.radio input{accent-color:var(--brand); width:16px; height:16px}
.err{display:none; margin:4px 0 14px; padding:10px 12px; background:var(--danger-soft); border:1px solid var(--danger-line); border-radius:var(--r-sm); color:var(--danger); font-size:13px}
.field.is-invalid .input,.field.is-invalid .textarea,.field.is-invalid .select--full{border-color:var(--danger-line); box-shadow:0 0 0 3px rgba(192,57,43,.08)}
.form-card.invalid .err{display:block}
.success{
  position:absolute; inset:0; background:#fff; border-radius:var(--r-lg); padding:32px;
  display:none; flex-direction:column; align-items:center; justify-content:center; text-align:center;
}
.form-card.done .success{display:flex}
.form-card.done>form{display:none}
.success .ico{width:56px; height:56px; border-radius:50%; background:var(--success-soft); color:var(--success); display:flex; align-items:center; justify-content:center; margin-bottom:12px}
.success h2{font-size:20px; font-weight:800; color:var(--ink-1)}
.success p{font-size:14px; color:var(--ink-2); max-width:340px; margin-top:8px; line-height:1.6}
.form-side{display:flex; flex-direction:column; gap:16px}
.notice{background:var(--surface); border:1px solid var(--line-1); border-radius:var(--r-md); padding:18px}
.notice h3{display:flex; align-items:center; gap:8px; font-size:15px; font-weight:700; color:var(--ink-1); margin-bottom:10px}
.notice ul{display:flex; flex-direction:column; gap:8px}
.notice li{position:relative; padding-left:18px; font-size:13.5px; line-height:1.6; color:var(--ink-2)}
.notice li::before{content:""; position:absolute; left:4px; top:9px; width:6px; height:6px; border-radius:50%; background:var(--brand-line)}

/* ---------- 12. Footer ---------- */
.foot{background:var(--canvas); border-top:1px solid var(--line-1); padding:40px 0 24px; margin-top:8px}
.foot__grid{display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:24px}
.foot__brand p{margin-top:12px; font-size:13px; line-height:1.6; color:var(--ink-3); max-width:300px}
.foot h4{font-size:13px; font-weight:700; color:var(--ink-1); margin-bottom:12px}
.foot ul{display:flex; flex-direction:column; gap:8px}
.foot a{font-size:13px; color:var(--ink-3)}
.foot a:hover{color:var(--brand)}
.foot--soon{font-size:13px; color:var(--ink-4)}
.foot__bottom{display:flex; justify-content:space-between; flex-wrap:wrap; gap:8px; margin-top:28px; padding-top:18px; border-top:1px solid var(--line-2); font-size:12px; color:var(--ink-3)}
.foot__bottom .r{font-family:var(--mono); font-variant-numeric:tabular-nums}
.foot__bottom a{color:var(--ink-3); text-decoration:underline}

/* ---------- 13. Toast ---------- */
.toast{
  position:fixed; left:50%; bottom:28px; transform:translateX(-50%) translateY(20px);
  background:var(--ink-1); color:#fff; font-size:14px; padding:12px 18px; border-radius:var(--r-md);
  box-shadow:var(--sh-3); z-index:var(--z-toast); opacity:0; pointer-events:none;
  transition:opacity var(--t-mid) var(--ease), transform var(--t-mid) var(--ease);
}
.toast.show{opacity:1; transform:translateX(-50%) translateY(0)}

/* ---------- 14. About / 404 ---------- */
.about-sec{scroll-margin-top:80px; margin:24px 0}
.about-sec h2{display:flex; align-items:center; gap:8px; font-size:21px; line-height:1.4; font-weight:700; color:var(--ink-1)}
.about-sec p{margin-top:10px; font-size:14.5px; line-height:1.8; color:var(--ink-2)}
.about-sec ul{margin-top:10px; display:flex; flex-direction:column; gap:8px}
.about-sec li{position:relative; padding-left:18px; font-size:14.5px; line-height:1.8; color:var(--ink-2)}
.about-sec li::before{content:""; position:absolute; left:4px; top:11px; width:6px; height:6px; border-radius:50%; background:var(--brand-line)}
.about-back{margin-top:24px}
.notfound{padding:80px 0; text-align:center}
.nf__title{font-size:26px; font-weight:800; color:var(--ink-1)}
.nf__desc{margin:12px 0 24px; font-size:15px; color:var(--ink-2)}
.nf__back{margin-top:28px}

/* ============================================================
   断点矩阵（只写 max-width，取 -1 值）
   ============================================================ */

/* ---- 平板横 900–1079 ---- */
@media (max-width:1079px){
  :root{--gutter:clamp(20px, 6vw, 72px)}
  .grid{grid-template-columns:repeat(3,1fr)}
  .grid--list{grid-template-columns:repeat(2,1fr)}
  .grid--3{grid-template-columns:repeat(3,1fr)}
  .detail__grid{grid-template-columns:1fr 290px}
  .cat-grid{grid-template-columns:190px 1fr}
}

/* ---- 平板竖 / 大屏手机 ≤899 ---- */
@media (max-width:899px){
  .wrap{width:100%; padding:0 20px}
  .topbar__in{width:100%; padding:0 20px}
  .hero__in{padding:0 20px}
  .grid{grid-template-columns:repeat(2,1fr); gap:12px}
  .grid--list{grid-template-columns:repeat(2,1fr); gap:12px}
  .grid--3{grid-template-columns:repeat(2,1fr)}
  .feature-grid{grid-template-columns:1fr}
  .detail__grid{grid-template-columns:1fr; gap:24px}
  .side{position:static}
  .promo{grid-template-columns:1fr; gap:20px; padding:24px}
  .promo__art{order:0}
  .promo__art svg{max-width:200px}
  .cat-grid{grid-template-columns:1fr; gap:16px; padding-bottom:44px}
  .pagehead__row{gap:20px}
  .pagehead__side{width:100%}
  .statcards{margin-top:2px}
  .about{grid-template-columns:1fr; gap:24px}
  .about__cta{flex-direction:column; align-items:flex-start}
  .about__cta-btn{width:100%; text-align:center}
  .sec__head--split .sec__head-note{text-align:left; max-width:none}
  /* 筛选：桌面左栏 → 全宽，场景 chips 单行横滚，价格/平台收进 details */
  .filter{position:static; flex-direction:column}
  /* 分类页纵向筛选在小屏回到横向换行，避免三组列表占掉半屏 */
  .filter--list .filter__group + .filter__group{margin-top:14px}
  .filter--list .filter__list{flex-direction:row; flex-wrap:wrap; gap:6px}
  .filter--list .filter__list a{background:var(--canvas); padding:6px 10px}
  .filter__group[data-fgroup="cat"] .chips-row{flex-wrap:nowrap}
  .chips-scroll .chips-row{flex-wrap:nowrap}
  .filter-more .chips-row{flex-wrap:wrap}
  .filter-more>summary{display:inline-flex}
  .filter-more:not([open])>.filter__group{display:none}
  /* 表单单列 */
  .form-grid{grid-template-columns:1fr}
  .form-side{order:2}
  .foot__grid{grid-template-columns:1fr 1fr; gap:20px}
  /* 导航收起为汉堡面板 */
  .nav{
    position:absolute; top:62px; left:0; right:0; background:#fff; border-bottom:1px solid var(--line-1);
    flex-direction:column; gap:0; padding:8px 20px 14px; display:none; box-shadow:var(--sh-2);
  }
  .nav a{padding:12px 4px; min-height:44px; display:flex; align-items:center; font-size:15px; border-bottom:1px solid var(--line-2)}
  .nav a:last-child{border-bottom:0}
  .topbar.nav-open .nav{display:flex}
  .burger{display:inline-flex}
  /* 移动端输入框 ≥16px（防 iOS 缩放，提到 899） */
  .input,.textarea,.select--full,.search input{font-size:16px}
  .select{font-size:16px}
}

/* ---- 手机 ≤599 ---- */
@media (max-width:599px){
  .wrap{padding:0 16px}
  .field--row{grid-template-columns:1fr}
  .field--row>.field{margin-bottom:16px}
  .field--row>.field:last-child{margin-bottom:0}  .topbar__in{padding:0 16px; height:56px}
  /* 手机吸顶条：隐藏公司/平台灰字，保证图标 + 产品名 + 按钮一行放得下 */
  .detail-bar__in{height:56px; gap:8px}
  .detail-bar__meta{display:none}
  .detail-bar__name{font-size:15px}
  .detail-bar__cta{height:34px; padding:0 14px; font-size:13px}
  /* 核心功能钩子：按钮整行铺满，文字区不再与按钮并排 */
  .feature-hook{flex-direction:column; align-items:stretch; padding:16px}
  .fit,.pc{grid-template-columns:1fr; gap:12px}
  .verdict{flex-direction:column; align-items:stretch}
  .verdict__cta{width:100%}
  .feature-hook__cta{width:100%}
  /* 底部「下一步」卡：标题缩小、按钮整行铺满 */
  .cta-card{padding:26px 18px 24px}
  .cta-card__t{font-size:21px}
  .cta-card__btn{width:100%}
  .hero{padding:38px 0 34px}
  .hero h1{font-size:26px; line-height:1.24}
  .hero__in{padding:0 16px}
  .pagehead h1{font-size:21px; line-height:1.35}
  .promo__title{font-size:19px}
  .promo__brand-name{font-size:23px}
  .promo__cta .btn{width:100%}
  .prose h2,.cat-group h2,.about-sec h2,.sec__head h2{font-size:18px}
  .detail__grid{gap:20px}
  .grid,.grid--list,.grid--3{grid-template-columns:1fr; gap:10px}
  .about__title{font-size:24px}
  .about__cta{padding:20px 18px}
  .sec{padding:36px 0}
  .sec--sm{padding:24px 0}
  .foot__grid{grid-template-columns:1fr; gap:20px}
  .foot__bottom{flex-direction:column}

  /* 手机首页快捷词：单行横滚 */
  .chips{flex-wrap:nowrap; overflow-x:auto; scrollbar-width:none; justify-content:flex-start; padding-bottom:2px}
  .chips::-webkit-scrollbar{display:none}
  .chips .chip{height:36px; flex:0 0 auto}

  /* 工具卡：1 列横向行（spec §5.1） */
  .card--tool{
    display:grid; grid-template-columns:48px minmax(0,1fr) 20px; column-gap:12px; align-items:center;
    padding:12px 16px; min-height:72px; gap:0;
  }
  .card--tool .card__top{display:contents}
  .card--tool .card__desc,
  .card--tool .card__meta,
  .card--tool .card__action,
  .card--tool .card__sub{display:none}
  .card--tool .mark{grid-column:1; grid-row:1/3; width:48px; height:48px; border-radius:12px; align-self:center}
  .card--tool .card__head{grid-column:2; grid-row:1; min-width:0}
  .card--tool .card__name{font-size:15px; line-height:1.35; font-weight:700; color:var(--ink-1); white-space:nowrap; overflow:hidden; text-overflow:ellipsis}
  .card--tool .card__rowsub{
    display:block; grid-column:2; grid-row:2; font-size:12px; line-height:1.5; color:var(--ink-3);
    white-space:nowrap; overflow:hidden; text-overflow:ellipsis; min-width:0;
  }
  .card--tool::after{
    content:""; grid-column:3; grid-row:1/3; justify-self:end; align-self:center;
    width:8px; height:8px; border-right:2px solid var(--ink-4); border-bottom:2px solid var(--ink-4);
    transform:rotate(-45deg);
  }
  .card--tool:active{background:var(--brand-softer); border-color:var(--brand-line); transition-duration:var(--t-active)}

  /* 筛选 chips 单行横滚 + details（spec §5.3） */
  .filter__group[data-fgroup="cat"] .chips-scroll{margin:0 -16px; padding:0 16px}
  .filter__group[data-fgroup="cat"] .chip{font-size:12.5px}

  /* 排行榜：移动端卡片式重排 */
  .rank-table,.rank-table tbody{display:block; width:100%}
  .rank-table thead{display:none}
  .rank-table tr{
    display:grid; grid-template-columns:auto minmax(0,1fr) auto; grid-template-areas:"no tool score" "no src src";
    column-gap:12px; row-gap:5px; align-items:center;
    padding:14px 12px; border-bottom:1px solid var(--line-2); position:relative;
  }
  .rank-table td{display:block; padding:0; border:0}
  .rank-table .no{grid-area:no}
  .rank-table .tool{grid-area:tool; display:flex; gap:12px; align-items:center}
  .rank-table .tool .mark{width:40px; height:40px; border-radius:10px}
  .rank-table .tool__txt{display:flex; flex-direction:column; min-width:0}
  .rank-table .tool__txt a{font-size:15px; line-height:1.35; font-weight:700; color:var(--ink-1); position:relative}
  .rank-table .tool__txt a::after{content:""; position:absolute; inset:0}
  .rank-table .tool__sub{font-size:12px; line-height:1.4; color:var(--ink-3); white-space:nowrap; overflow:hidden; text-overflow:ellipsis}
  .rank-table .score{grid-area:score; text-align:right}
  .rank-table .src{grid-area:src; justify-self:start}
  .rank-table .cat,.rank-table .price{display:none}

  /* 置顶合作位：窄屏整行堆叠、按钮全宽 */
  .adcard{flex-wrap:wrap}
  .adcard .btn{width:100%}
  .pagehead__side--note{text-align:left}
  .rank-foot{flex-direction:column; align-items:flex-start; gap:10px}
  .rank-cta__inner{flex-direction:column; align-items:stretch; text-align:left; padding:22px 0}
  .rank-cta .btn--cta{width:100%; justify-content:center}

  /* cta-band 竖排，按钮全宽 */
  .cta-band{flex-direction:column; align-items:stretch; text-align:left; padding:20px}
  .cta-band .btn{width:100%}

  /* 分类页分组：组内 1 列横向行，组间分隔（spec §5.4） */
  .cat-group{margin:24px 0; padding-top:24px; border-top:1px solid var(--line-2)}
  .cat-group:first-of-type{border-top:0; padding-top:0}

  .search__go{font-size:0}
  .search__go::after{content:"搜"}
  html{scroll-padding-top:64px}
  .topbar__in{height:56px}
  .nav{top:56px}
}

/* ---- 减少动效（唯一允许 !important 处） ---- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important; animation-iteration-count:1!important; transition-duration:.001ms!important; scroll-behavior:auto!important}
}