html { scroll-behavior: smooth; }

.tool-home { display: grid; grid-template-columns: 208px minmax(0, 1fr); gap: .72rem; align-items: start; }
.tool-side { position: sticky; top: .72rem; border: 1px solid var(--line); border-radius: 12px; background: var(--bg-surface); box-shadow: var(--shadow-sm); padding: .6rem .48rem; max-height: calc(100vh - 1.44rem); overflow: auto; }
.tool-side-logo { display: flex; align-items: center; gap: .38rem; padding: .22rem .3rem .56rem; border-bottom: 1px solid var(--line); margin-bottom: .36rem; font-family: "Outfit", "Noto Sans SC", sans-serif; color: var(--text-main); font-size: 1.12rem; font-weight: 800; }
.tool-side-logo-dot { width: 1.35rem; height: 1.35rem; border-radius: .38rem; background: linear-gradient(135deg, #a777ff, #6e77ff); color: #fff; font-size: .68rem; font-weight: 700; display: inline-flex; align-items: center; justify-content: center; }
.tool-side-links { display: grid; gap: .16rem; }
.tool-side-link { display: grid; grid-template-columns: 1rem minmax(0, 1fr) auto; align-items: center; gap: .42rem; border: 1px solid transparent; border-radius: .58rem; text-decoration: none; color: #4e6189; padding: .38rem .42rem; font-size: .82rem; transition: .16s ease; }
.tool-side-link:hover, .tool-side-link.active, .tool-side-link.is-active { border-color: var(--line-strong); background: var(--brand-soft); color: #21345f; box-shadow: inset 3px 0 0 #5f72ff; }
.tool-side-link i { color: #687ba2; text-align: center; }
.tool-side-link small { color: #97a9c8; font-size: .7rem; }

.tool-main { min-width: 0; display: grid; gap: .62rem; }

.tool-hero { border: 1px solid var(--line); border-radius: 12px; background: linear-gradient(180deg, #f5f8ff 0, #eef3fb 100%); box-shadow: var(--shadow-sm); padding: .95rem .95rem .82rem; text-align: center; }
.tool-chip { display: inline-flex; border: 1px solid var(--line-strong); border-radius: 999px; background: var(--bg-surface); color: #6f81a7; font-size: .68rem; font-weight: 700; padding: .14rem .5rem; }
.tool-title { margin: .34rem 0 .18rem; font-family: "Outfit", "Noto Sans SC", sans-serif; font-size: clamp(1.6rem, 2.8vw, 2.45rem); font-weight: 800; color: var(--text-main); }
.tool-sub { margin: 0; color: var(--text-muted); font-size: .84rem; }

:root[data-theme="dark"] .tool-hero { background: linear-gradient(180deg, #1b2849 0, #16223f 100%); }

.tool-search { margin: .62rem auto .38rem; width: min(860px, 100%); display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: .38rem; border: 1px solid var(--line-strong); border-radius: 999px; background: var(--bg-surface); padding: .3rem; }
.tool-search input { border: 0; box-shadow: none; height: 2.16rem; padding: 0 .82rem; background: transparent; color: var(--text-main); }
.tool-search button { border-radius: 999px; min-width: 90px; height: 2.16rem; font-size: .82rem; }

.tool-kpis { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .5rem; margin-top: .52rem; }
.tool-kpi { border: 1px solid var(--line); border-radius: .7rem; background: var(--bg-surface); padding: .46rem .5rem; }
.tool-kpi .label { display: block; color: #7b8fb2; font-size: .72rem; }
.tool-kpi .value { margin-top: .12rem; font-family: "Outfit", "Noto Sans SC", sans-serif; font-size: 1.08rem; font-weight: 800; color: var(--text-main); }

.tool-channel { border: 1px solid var(--line); border-radius: 12px; background: var(--bg-surface); box-shadow: var(--shadow-sm); padding: .52rem; display: grid; grid-template-columns: 62px repeat(5, minmax(0, 1fr)); gap: .46rem; }
.tool-channel-mini { border: 1px solid var(--line); border-radius: 10px; background: var(--bg-soft); display: grid; gap: .34rem; padding: .44rem .3rem; }
.tool-channel-mini a { text-decoration: none; color: #5f7399; font-size: .72rem; text-align: center; }
.tool-channel-card { border: 1px solid var(--line); border-radius: 10px; min-height: 104px; display: flex; align-items: flex-end; justify-content: flex-start; text-decoration: none; font-family: "Outfit", "Noto Sans SC", sans-serif; font-size: .92rem; font-weight: 700; color: #fff; background-size: cover; background-position: center; position: relative; overflow: hidden; padding: .52rem; }
.tool-channel-card::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(20,32,56,.08), rgba(20,32,56,.68)); }
.tool-channel-card span { position: relative; z-index: 1; }

.tool-banner-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .52rem; }
.tool-banner { border: 1px solid var(--line); border-radius: 10px; background: linear-gradient(90deg, #e8f3ff, #e4f7ef); min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: .52rem; padding: .58rem .72rem; text-decoration: none; }
.tool-banner.alt { background: linear-gradient(90deg, #e6f6ff, #dff8dd); }
.tool-banner b { color: var(--text-main); font-size: 1.06rem; font-family: "Outfit", "Noto Sans SC", sans-serif; }
.tool-banner small { border: 1px solid var(--line-strong); border-radius: 999px; background: var(--bg-surface); color: #5f749a; font-size: .72rem; padding: .14rem .48rem; }

.tool-section { border: 1px solid var(--line); border-radius: 12px; background: var(--bg-surface); box-shadow: var(--shadow-sm); padding: .62rem; scroll-margin-top: 1rem; }
.tool-section-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: .48rem; }
.tool-section-head h2 { margin: 0; color: var(--text-main); font-size: 1rem; font-family: "Outfit", "Noto Sans SC", sans-serif; font-weight: 700; }
.tool-section-head a { color: var(--brand-strong); text-decoration: none; font-size: .76rem; font-weight: 600; }

.tool-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .52rem; }
.tool-card { border: 1px solid var(--line); border-radius: 10px; background: var(--bg-surface); box-shadow: var(--shadow-sm); padding: .56rem .62rem; text-decoration: none; transition: .16s ease; }
.tool-card:hover { transform: translateY(-2px); border-color: var(--line-strong); box-shadow: 0 12px 22px rgba(31,54,112,.14); }
.tool-card-name { color: var(--text-main); font-size: .92rem; line-height: 1.26; font-weight: 700; }
.tool-card-meta { margin-top: .2rem; color: var(--text-muted); font-size: .76rem; }
.tool-card-tag { margin-top: .42rem; display: inline-flex; border: 1px solid var(--line-strong); border-radius: 999px; padding: .13rem .48rem; color: var(--brand-strong); background: var(--brand-soft); font-size: .7rem; }

@media (max-width: 1199px) {
    .tool-home { grid-template-columns: 1fr; }
    .tool-side { position: static; max-height: none; }
    .tool-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (max-width: 767px) {
    .tool-kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .tool-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .tool-search { grid-template-columns: 1fr; border-radius: 12px; }
    .tool-search button { width: 100%; border-radius: 10px; }
    .tool-channel { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .tool-banner-row { grid-template-columns: 1fr; }
}