:root{--bg: #f3f5f7;--panel: #ffffff;--panel-soft: #fafbfc;--line: #e5e8ee;--text: #1f2329;--muted: #6b7280;--accent: #2f81f7;--accent-soft: #eef5ff;--shadow: 0 8px 24px rgba(31, 35, 41, .06)}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:PingFang SC,Hiragino Sans GB,Microsoft YaHei,Segoe UI,sans-serif}a{color:inherit;text-decoration:none}button{font:inherit}#app{min-height:100vh}.site-header{position:sticky;top:0;z-index:20;background:#fffffff5;border-bottom:1px solid var(--line)}.site-header__inner,.app-shell__body{width:min(1460px,calc(100vw - 24px));margin:0 auto}.site-header__inner{display:grid;grid-template-columns:220px minmax(0,1fr) auto;gap:18px;align-items:center;min-height:60px}.site-header__brand{display:flex;align-items:center;gap:10px}.site-header__brand-logo{display:block;width:34px;height:34px;border-radius:8px;object-fit:cover}.site-header__brand-copy{display:grid;gap:2px}.site-header__brand-copy strong{font-size:15px}.site-header__brand-copy small,.site-header__action-label,.side-nav__eyebrow,.tool-section__eyebrow,.section-kicker{font-size:12px;color:var(--muted)}.site-header__nav{display:flex;gap:6px;overflow-x:auto}.site-header__nav-link,.site-header__action-link{flex:0 0 auto;padding:8px 12px;border-radius:8px;font-size:14px;color:#4b5563}.site-header__nav-link.router-link-active,.site-header__nav-link:hover,.site-header__action-link:hover{color:var(--accent);background:var(--accent-soft)}.site-header__actions{display:flex;align-items:center;gap:8px}.app-shell__body{display:grid;grid-template-columns:280px minmax(0,1fr);gap:16px;align-items:start;padding:16px 0 36px}.app-shell__content{display:grid;gap:16px}.home-board{position:relative;display:grid;gap:18px;padding:10px;border-radius:28px;background:radial-gradient(circle at 0% 0%,rgba(136,188,255,.22),transparent 24%),radial-gradient(circle at 100% 12%,rgba(121,225,255,.18),transparent 20%),linear-gradient(180deg,#f8fbfffa,#f2f7fcf5);box-shadow:inset 0 1px #ffffffe6}.home-board:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;border-radius:28px;border:1px solid rgba(220,230,243,.8);pointer-events:none}.home-board__load-more{position:relative;z-index:1;display:grid;justify-items:center;gap:4px;padding:10px 16px 4px;color:#62748a;font-size:13px}.home-board__load-more p{margin:0}.search-panel{position:relative;display:grid;gap:12px;padding:18px 20px;border:1px solid #e8edf3;border-radius:10px;background:var(--panel);overflow:hidden}.search-panel--hero{gap:18px;justify-items:center;padding:18px 22px 14px;border:1px solid rgba(213,225,243,.9);border-radius:28px;background:radial-gradient(circle at top left,rgba(103,145,255,.18),transparent 26%),radial-gradient(circle at top right,rgba(119,214,255,.16),transparent 24%),linear-gradient(180deg,#fff,#f8fbff);box-shadow:0 18px 50px #244a8414}.search-panel--hero:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(120deg,rgba(255,255,255,.55),transparent 42%),radial-gradient(circle at 50% 0%,rgba(255,255,255,.9),transparent 48%);pointer-events:none}.search-panel__engines{display:flex;flex-wrap:wrap;gap:8px}.search-panel--hero .search-panel__engines{position:relative;z-index:1;justify-content:center;gap:8px;padding:6px;border:1px solid rgba(214,226,245,.9);border-radius:999px;background:#ffffffbf;box-shadow:inset 0 1px #fffc}.search-panel__engine{padding:7px 12px;border:1px solid #d8e2ef;border-radius:999px;background:#f8fbff;color:#4f6078;cursor:pointer}.search-panel__engine.is-active{border-color:#cfe0ff;background:var(--accent-soft);color:var(--accent)}.search-panel--hero .search-panel__engine{min-width:74px;padding:7px 14px;border:0;background:transparent;color:#5a6a82;font-size:12px;font-weight:600;transition:background-color .18s ease,color .18s ease,transform .18s ease}.search-panel--hero .search-panel__engine:hover{color:#274e8a;transform:translateY(-1px)}.search-panel--hero .search-panel__engine.is-active{background:linear-gradient(135deg,#4f8cff,#2f81f7);color:#fff;box-shadow:0 8px 20px #2f81f73d}.search-panel__form{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px}.search-panel--hero .search-panel__form{position:relative;z-index:1;width:min(860px,100%);grid-template-columns:minmax(0,1fr) auto;align-items:center;padding:4px;border:1px solid rgba(215,227,245,.92);border-radius:999px;background:#fffffff5;box-shadow:0 12px 30px #23467a14,inset 0 1px #ffffffd1}.search-panel__input{min-width:0;height:46px;padding:0 14px;border:1px solid #d8e2ef;border-radius:12px;background:#fff;color:var(--text);font:inherit}.search-panel--hero .search-panel__input{height:42px;padding:0 16px;border:0;border-radius:999px;background:transparent;font-size:14px}.search-panel__input:focus{outline:none;border-color:#b7d1ff;box-shadow:0 0 0 4px #2f81f71f}.search-panel--hero .search-panel__input:focus{box-shadow:none}.search-panel__submit{height:46px;padding:0 18px;border:0;border-radius:12px;background:var(--accent);color:#fff;cursor:pointer}.search-panel--hero .search-panel__submit{height:40px;padding:0 20px;border-radius:999px;background:linear-gradient(135deg,#4f8cff,#2f81f7);font-size:13px;font-weight:700;letter-spacing:.02em;box-shadow:0 10px 24px #2f81f73d}.search-panel--hero .search-panel__submit:hover{filter:brightness(1.03)}.side-nav__sticky{position:sticky;top:78px;display:grid;gap:8px}.side-nav__eyebrow{padding-left:2px}.side-nav__list,.side-nav__children,.breadcrumbs__list,.faq-panel__list,.tool-card__tags{margin:0;padding:0;list-style:none}.side-nav__list{display:grid;gap:4px}.side-nav__group{overflow:hidden;border:1px solid #edf1f5;border-radius:8px;background:#fbfcfe;box-shadow:none}.side-nav__group.is-active{border-color:#d9e6fb;background:#fff}.side-nav__group.is-active .side-nav__toggle{background:#f8fbff}.side-nav__group.is-active .side-nav__name{color:#245fcb}.side-nav__toggle{display:flex;width:100%;justify-content:space-between;gap:10px;padding:10px 12px;border:0;background:transparent;text-align:left;cursor:pointer}.side-nav__toggle:hover{background:#f8fbff}.side-nav__toggle-static{cursor:default}.side-nav__toggle-static:hover{background:transparent}.side-nav__toggle-main{display:flex;align-items:center;gap:8px}.side-nav__toggle-link{flex:1;min-width:0}.side-nav__toggle-icon-button{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;padding:0;border:0;background:transparent;cursor:pointer}.side-nav__toggle-icon{flex:0 0 auto;color:#7f8ca0;font-size:16px;line-height:1}.side-nav__icon{display:inline-flex;align-items:center;justify-content:center;min-width:24px;height:24px;padding:0 6px;border-radius:5px;background:#edf3fc;color:#5578b3;font-size:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;flex:0 0 auto}.side-nav__name{font-size:13px;font-weight:600}.home-intro__copy p,.directory-block__title p,.directory-subsection__header p,.tool-card__tagline,.tool-card__description,.tool-card__pricing,.faq-item p,.page-hero p,.topic-hero p,.page-body-copy p,.detail-hero__description,.detail-copy p{color:var(--muted);line-height:1.7}.side-nav__panel{border-top:1px solid #eff3f6;background:#fff;padding:8px}.side-nav__children{display:grid;gap:6px}.side-nav__child-link{position:relative;display:flex;align-items:center;min-height:34px;padding:8px 12px 8px 34px;border:1px solid #eef2f6;border-radius:8px;font-size:12px;color:#66758a;background:#fbfcfe}.side-nav__child-link:hover{background:#f7faff;color:var(--accent);border-color:#dbe7fb}.side-nav__child-link.is-current{background:#f4f8ff;color:#245fcb;font-weight:600;border-color:#d8e6ff}.side-nav__child-link:before{content:"";position:absolute;left:12px;top:50%;width:8px;height:8px;border-radius:999px;background:#c9d3e3;transform:translateY(-50%)}.side-nav__child-link:hover:before{background:#8fb3f8}.side-nav__child-link.is-current:before{background:#2f81f7;box-shadow:0 0 0 4px #2f81f71f}.side-nav__meta{padding:12px;border:1px solid #edf1f5;border-radius:8px;background:#fbfcfe;color:var(--muted);font-size:13px;line-height:1.7}.home-intro,.feature-row,.directory-block,.seo-panel,.tool-section,.page-hero,.topic-hero,.page-body-copy,.detail-hero,.detail-copy,.empty-state{border:1px solid #e8edf3;border-radius:10px;background:var(--panel);box-shadow:none}.home-intro,.feature-row,.directory-block,.seo-panel,.tool-section,.page-hero,.topic-hero,.page-body-copy,.detail-hero,.detail-copy,.empty-state{padding:18px 20px}.home-intro__copy h1,.page-hero h1,.topic-hero h1,.detail-hero h1{margin:0 0 10px;font-size:28px;line-height:1.25}.feature-row__header,.directory-block__header,.seo-panel__header,.tool-section__header{display:flex;justify-content:space-between;gap:18px;align-items:flex-start;margin-bottom:14px}.feature-row__eyebrow{margin:0 0 6px;font-size:11px;font-weight:700;letter-spacing:.16em;color:#6c84a8}.feature-row__header h2,.directory-block__title h2,.directory-subsection__header h3,.seo-panel__header h2,.tool-section__title,.detail-copy h2{margin:0 0 6px;font-size:22px;line-height:1.3}.feature-row__header p,.seo-panel__header p,.tool-section__summary{max-width:54ch;color:var(--muted);line-height:1.7}.feature-row{border-radius:22px;background:linear-gradient(180deg,#fffffffa,#fafcfffa);box-shadow:0 10px 28px #203a660d}.feature-row--tabs{display:grid;gap:16px}.feature-row--stable{min-height:362px}.feature-tabs{display:inline-flex;flex-wrap:wrap;gap:8px;align-items:center;min-height:56px;padding:6px;border:1px solid #d9e4f3;border-radius:999px;background:linear-gradient(180deg,#fdfefe,#f5f9ff);box-shadow:inset 0 1px #ffffffe6}.feature-tabs__button{min-width:104px;padding:10px 16px;border:0;border-radius:999px;background:transparent;color:#5d6d84;font-weight:600;cursor:pointer;transition:background-color .18s ease,color .18s ease,transform .18s ease}.feature-tabs__button:hover{color:#264e89;transform:translateY(-1px)}.feature-tabs__button.is-active{background:linear-gradient(135deg,#4f8cff,#2f81f7);color:#fff;box-shadow:0 10px 24px #2f81f73d}.feature-tabs__placeholder{display:inline-flex;align-items:center;justify-content:center;min-width:104px;padding:10px 16px;border-radius:999px;background:#eef4fce6;color:#718198;font-weight:600}.feature-tabs__placeholder.is-active{background:linear-gradient(135deg,#4f8cff,#2f81f7);color:#fff}.feature-row__header--stable{min-height:62px}.feature-row__grid,.directory-subsection__grid,.tool-section__grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px 12px}.feature-row__grid--skeleton{pointer-events:none}.feature-skeleton-card{display:grid;grid-template-columns:52px minmax(0,1fr) 56px;align-items:center;gap:12px;min-height:92px;padding:14px 16px;border:1px solid #eef2f6;border-radius:16px;background:linear-gradient(180deg,#fafcfffa,#f5f8fcfa)}.feature-skeleton-card__logo,.feature-skeleton-card__line,.feature-skeleton-card__badge{display:block;border-radius:999px;background:linear-gradient(90deg,#edf2f8,#f6f9fc 45%,#e7edf5);background-size:200% 100%;animation:feature-skeleton-shimmer 1.2s linear infinite}.feature-skeleton-card__logo{width:44px;height:44px;border-radius:14px}.feature-skeleton-card__copy{display:grid;gap:8px}.feature-skeleton-card__line--title{width:72%;height:14px}.feature-skeleton-card__line--body{width:100%;height:10px}.feature-skeleton-card__badge{justify-self:end;width:44px;height:18px}@keyframes feature-skeleton-shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.directory-block__header{padding-bottom:10px;border-bottom:1px solid #eef2f6}.directory-block--home{position:relative;overflow:hidden;border-radius:22px;background:linear-gradient(180deg,#fffffffc,#f8fbfffa);box-shadow:0 10px 28px #1f34580d}.directory-block--home:before{content:"";position:absolute;left:20px;right:20px;top:0;height:3px;border-radius:999px;background:linear-gradient(90deg,#8cb6ff,#4f8cff 45%,#8de8ff);opacity:.7}.directory-block__more{flex:0 0 auto;color:var(--accent);font-size:14px;align-self:center}.directory-block__sections{display:grid;gap:10px;padding-top:12px}.directory-subsection{padding:10px 0 0;border:0;border-radius:0;background:transparent}.directory-subsection+.directory-subsection{border-top:1px solid #eef2f6;padding-top:14px}.directory-subsection__header{margin-bottom:10px;padding:0 2px}.tool-card{position:relative;display:grid;grid-template-columns:40px minmax(0,1fr);gap:10px;padding:10px 0;border:0;border-bottom:1px solid #eef2f6;border-radius:0;background:transparent}.tool-card__logo{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;background:linear-gradient(135deg,#eef5ff,#f8fbff);color:var(--accent);font-size:12px;font-weight:700}.tool-card__logo-image{width:40px;height:40px;border-radius:10px;object-fit:cover;border:1px solid #eef2f6;background:#fff}.tool-card__body{min-width:0}.tool-card__content{position:relative;display:block;min-width:0}.tool-card__header{display:grid;gap:4px}.tool-card__header-main{display:flex;align-items:center;gap:8px;min-width:0}.tool-card__title{margin:0;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px;line-height:1.3}.tool-card__content:hover .tool-card__title,.directory-block__title a:hover{color:var(--accent)}.tool-card__tagline,.tool-card__description{margin:0;font-size:11px}.tool-card__pricing{white-space:nowrap;flex:0 0 auto;padding:1px 6px;border-radius:999px;background:#f4f7fb;color:#5d6877;font-size:10px}.tool-card__description{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tool-card__tags{display:flex;flex-wrap:wrap;gap:5px;margin-top:8px}.tool-card__tag{padding:2px 6px;border-radius:999px;background:#f0f4f8;color:#576274;font-size:11px}.tool-card__hover-card{position:absolute;left:0;top:calc(100% + 10px);z-index:20;width:min(280px,calc(100vw - 72px));padding:12px;border:1px solid #dbe6f5;border-radius:12px;background:#fffffffa;box-shadow:0 18px 40px #1c2e4c24;opacity:0;pointer-events:none;transform:translateY(6px);transition:opacity .18s ease,transform .18s ease}.tool-card__hover-card:before{content:"";position:absolute;left:18px;top:-6px;width:12px;height:12px;background:#fffffffa;border-left:1px solid #dbe6f5;border-top:1px solid #dbe6f5;transform:rotate(45deg)}.tool-card:hover .tool-card__hover-card,.tool-card:focus-within .tool-card__hover-card{opacity:1;pointer-events:auto;transform:translateY(0)}.tool-card__hover-title{margin:0 0 6px;font-size:13px;font-weight:700;color:#1f2f45}.tool-card__hover-description{margin:0;color:var(--muted);font-size:12px;line-height:1.65}.feature-row__grid .tool-card:nth-last-child(-n+2),.directory-subsection__grid .tool-card:nth-last-child(-n+2),.tool-section__grid .tool-card:nth-last-child(-n+2){border-bottom:0}.breadcrumbs__list{display:flex;flex-wrap:wrap;gap:10px}.breadcrumbs__item{font-size:13px;color:var(--muted)}.breadcrumbs__item:not(:last-child):after{content:"/";margin-left:10px;color:#c0c7d2}.detail-hero{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:20px}.detail-hero__tagline{font-size:15px;color:var(--muted)}.detail-hero__meta{display:flex;flex-wrap:wrap;gap:14px;margin-top:14px;font-size:13px;color:var(--muted)}.detail-hero__panel{padding:16px;border:1px solid #eef1f5;border-radius:10px;background:var(--panel-soft)}.detail-hero__panel-logo{display:flex;align-items:center;justify-content:center;width:72px;height:72px;margin-bottom:14px;border:1px solid #e8edf3;border-radius:16px;background:#fff;overflow:hidden;color:var(--accent);font-size:22px;font-weight:700}.detail-hero__panel-logo img{width:100%;height:100%;object-fit:cover}.detail-hero__panel h2{margin:0 0 12px;font-size:17px}.detail-hero__panel ul{margin:0;padding-left:18px;color:var(--muted)}.detail-hero__panel a{display:inline-flex;margin-top:12px;padding:8px 12px;border-radius:8px;background:var(--accent);color:#fff;font-size:13px}.detail-copy--rich{overflow:hidden}.detail-rich-content{color:#334155;line-height:1.8;font-size:15px}.detail-rich-content>*:first-child{margin-top:0}.detail-rich-content>*:last-child{margin-bottom:0}.detail-rich-content h2,.detail-rich-content h3{margin:28px 0 12px;color:#0f172a;line-height:1.35}.detail-rich-content h2{font-size:24px}.detail-rich-content h3{font-size:20px}.detail-rich-content p,.detail-rich-content ul,.detail-rich-content ol,.detail-rich-content blockquote,.detail-rich-content table{margin:0 0 16px}.detail-rich-content ul,.detail-rich-content ol{padding-left:22px}.detail-rich-content li+li{margin-top:6px}.detail-rich-content a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}.detail-rich-content img{display:block;max-width:100%;height:auto;margin:18px auto;border:1px solid #e6edf5;border-radius:14px;background:#fff}.detail-rich-content table{width:100%;border-collapse:collapse;overflow:hidden;border:1px solid #e5ebf3;border-radius:12px}.detail-rich-content th,.detail-rich-content td{padding:10px 12px;border:1px solid #e5ebf3;text-align:left;vertical-align:top}.detail-rich-content blockquote{padding:12px 14px;border-left:4px solid #c7dbff;background:#f8fbff;color:#516072;border-radius:8px}.faq-panel__list{display:grid;gap:12px}.faq-item{padding:14px;border:1px solid #eef1f5;border-radius:10px;background:var(--panel-soft)}.faq-item h3{margin:0 0 8px;font-size:16px}@media(max-width:1080px){.app-shell__body{grid-template-columns:1fr}.side-nav__sticky{position:static}}@media(max-width:860px){.site-header__inner{grid-template-columns:1fr;padding:10px 0}.search-panel__form{grid-template-columns:1fr}.search-panel--hero{padding:16px 12px 14px;border-radius:22px}.search-panel--hero .search-panel__engines{width:100%;justify-content:flex-start;overflow-x:auto;flex-wrap:nowrap}.search-panel--hero .search-panel__form{padding:6px}.search-panel--hero .search-panel__input{height:40px;padding:0 12px;font-size:13px}.search-panel--hero .search-panel__submit{height:40px;width:100%}.home-intro,.feature-row__header,.directory-block__header,.seo-panel__header,.tool-section__header,.detail-hero,.tool-card__header{display:grid;grid-template-columns:1fr}.feature-row__grid,.directory-subsection__grid,.tool-section__grid{grid-template-columns:repeat(2,minmax(0,1fr))}.feature-row__grid .tool-card,.directory-subsection__grid .tool-card,.tool-section__grid .tool-card{border-bottom:1px solid #eef2f6}.feature-row__grid .tool-card:last-child,.directory-subsection__grid .tool-card:last-child,.tool-section__grid .tool-card:last-child{border-bottom:0}}@media(max-width:560px){.feature-row__grid,.directory-subsection__grid,.tool-section__grid{grid-template-columns:1fr}}
