:root{color-scheme:light;--color-bg: #f6f8fb;--color-card: #ffffff;--color-text: #1f2733;--color-subtle: #556070;--color-border: #d6dfeb;--color-primary: #0a66c2;--color-primary-soft: #e7f2ff;--color-danger-soft: #fff4e8;--shadow-card: 0 8px 28px rgba(16, 36, 67, .08)}*{box-sizing:border-box}body{margin:0;font-family:PingFang SC,Microsoft YaHei,Noto Sans SC,sans-serif;color:var(--color-text);background:radial-gradient(circle at top right,#ebf2ff 0,var(--color-bg) 58%);line-height:1.6}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}.site-header{border-bottom:1px solid var(--color-border);background:#ffffffdb;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);position:sticky;top:0;z-index:10}.site-container{width:min(1080px,calc(100% - 32px));margin:0 auto}.site-header__inner{min-height:62px;display:flex;align-items:center;justify-content:space-between;gap:16px}.site-logo{margin:0;font-size:18px;font-weight:700}.site-nav{display:flex;flex-wrap:wrap;gap:12px}.site-main{padding:24px 0 40px}.section-title{margin:0 0 14px;font-size:24px}.section-subtitle{margin:0 0 22px;color:var(--color-subtle)}.hero-card,.list-card,.tool-shell,.policy-card,.about-card{background:var(--color-card);border:1px solid var(--color-border);border-radius:14px;box-shadow:var(--shadow-card)}.hero-card{padding:24px;margin-bottom:18px}.hero-card h1{margin:0 0 10px;font-size:30px}.hero-card p{margin:0 0 18px;color:var(--color-subtle)}.search-row{display:grid;grid-template-columns:1fr;gap:10px}.search-input{height:46px;border-radius:10px;border:1px solid var(--color-border);padding:0 14px;font-size:16px;outline:none}.search-input:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-soft)}.list-card{margin-bottom:18px;padding:18px}.tool-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.tool-card{border:1px solid var(--color-border);border-radius:12px;padding:14px;background:#fff}.tool-card__title{margin:0 0 8px;font-size:18px}.tool-card__summary{margin:0 0 10px;color:var(--color-subtle)}.tool-card__meta{margin:0;font-size:13px;color:#6f7f94}.tool-shell{padding:20px}.tool-page__intro{margin-bottom:16px;border-left:3px solid var(--color-primary);padding-left:12px}.tool-page__title{margin:0 0 8px;font-size:28px}.tool-page__summary{margin:0;color:var(--color-subtle)}.tool-panel{border:1px solid var(--color-border);border-radius:12px;padding:18px;background:#fff}.tool-panel__title{margin:0 0 8px;font-size:22px}.tool-panel__description{margin:0 0 12px;color:var(--color-subtle)}.tool-panel__result{padding:12px;border-radius:10px;background:#edf3ff;border:1px dashed #b8c8ea;margin-bottom:12px;word-break:break-all;min-height:50px}.tool-panel__actions{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:10px}.tool-panel__hint{margin:0;color:var(--color-subtle);font-size:14px}.btn{display:inline-flex;align-items:center;justify-content:center;height:40px;border-radius:10px;border:1px solid transparent;padding:0 14px;font-size:14px;cursor:pointer}.btn--primary{background:var(--color-primary);color:#fff}.btn--secondary{background:#fff;border-color:var(--color-border)}.ad-slot{margin:16px 0}.ad-slot__placeholder{border:1px dashed #c4b8a5;border-radius:10px;background:var(--color-danger-soft);color:#7a5a2a;font-size:14px;min-height:72px;display:flex;align-items:center;justify-content:center}.policy-card,.about-card{padding:24px}.policy-card h1,.about-card h1{margin-top:0}.policy-card section+section,.about-card section+section{margin-top:18px}.empty-state{border-radius:10px;border:1px dashed var(--color-border);padding:16px;color:var(--color-subtle)}.site-footer{border-top:1px solid var(--color-border);padding:16px 0 20px;color:var(--color-subtle);font-size:13px}@media(max-width:860px){.tool-grid{grid-template-columns:1fr}.hero-card h1{font-size:24px}.site-header__inner{align-items:flex-start;flex-direction:column;padding:10px 0}}