/* 枫叶便签官网 扁平化设计 */
:root {
    --primary: #5F9EFE;
    --primary-light: #80b2ff;
    --primary-dark: #4a8ae8;
    --bg: #ffffff;
    --card-bg: #ffffff;
    --sidebar-bg: #f7f8fa;
    --input-bg: #ffffff;
    --text: #1a1a1a;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --border: #e5e7eb;
    --hover: #f3f4f6;
    --radius: 10px;
    --radius-sm: 6px;
    --radius-lg: 14px;
    --header-bg: linear-gradient(135deg, #4a8ae8, #5F9EFE);
    --header-text: #ffffff;
}
*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','Microsoft YaHei','PingFang SC',sans-serif;background:var(--bg);color:var(--text);line-height:1.6;display:flex;flex-direction:column}
.page-wrap{flex:1 0 auto}

/* ===== Header ===== */
.site-header{background:var(--header-bg);color:var(--header-text);padding:0 24px;position:sticky;top:0;z-index:100;box-shadow:0 2px 12px rgba(0,0,0,.12)}
.header-inner{max-width:1400px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:100px}
.logo-link{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--header-text)}
.header-logo{width:48px;height:48px;object-fit:contain;border-radius:10px}
.header-name{font-size:22px;font-weight:700;letter-spacing:.5px}
.header-nav{display:flex;gap:4px}
.header-nav a{color:rgba(255,255,255,.75);text-decoration:none;padding:10px 24px;border-radius:var(--radius-sm);font-size:15px;font-weight:500;transition:all .15s}
.header-nav a:hover{background:rgba(255,255,255,.15);color:#fff}
.header-nav a.active{background:rgba(255,255,255,.25);color:#fff}

/* ===== Hero ===== */
.hero{background:var(--header-bg);color:#fff;padding:60px 20px 50px;text-align:center}
.hero-content{max-width:500px;margin:0 auto}
.hero-logo{width:64px;height:64px;object-fit:contain;margin-bottom:12px;border-radius:14px}
.hero h1{font-size:30px;font-weight:700;margin-bottom:6px;letter-spacing:1px}
.hero-desc{font-size:15px;opacity:.85;margin-bottom:24px;line-height:1.7}
.hero-actions{display:flex;align-items:center;gap:14px;justify-content:center;flex-wrap:wrap}
.hero-version{font-size:13px;opacity:.7}
.page-hero{background:var(--header-bg);color:#fff;padding:40px 20px 40px}

/* ===== Buttons ===== */
.btn-primary{display:inline-block;background:#fff;color:var(--primary);padding:10px 28px;border-radius:8px;font-size:15px;font-weight:600;text-decoration:none;border:none;cursor:pointer;transition:all .15s}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 20px rgba(0,0,0,.15)}
.btn-primary.blue{background:var(--primary);color:#fff}
.btn-primary.blue:hover{background:var(--primary-dark)}
.btn-lg{padding:14px 40px;font-size:17px;border-radius:10px}
.btn-sm{padding:5px 14px;font-size:12px}

/* ===== Sections ===== */
.section-inner{max-width:1400px;margin:0 auto;padding:48px 24px}
.section-inner h2{font-size:20px;font-weight:600;margin-bottom:24px;text-align:center;color:var(--text)}

/* ===== Search 高度调整 ===== */
.search-section{background:var(--sidebar-bg);border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:80px 20px}
.search-wrap{max-width:800px;margin:0 auto}
.search-bar{display:flex;align-items:stretch;background:var(--card-bg);border:2px solid var(--border);border-radius:32px;transition:border-color .15s}
.search-bar:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(95,158,254,.15)}
/* 搜索引擎下拉 */
/* 自定义搜索引擎下拉 */
.search-engine-custom{position:relative;display:flex;align-items:center;flex-shrink:0;min-width:90px;cursor:pointer}
.sec-selected{display:flex;align-items:center;gap:4px;padding:16px 12px 16px 16px;font-size:15px;color:var(--text-secondary);border-radius:32px 0 0 32px;user-select:none;white-space:nowrap;height:100%}
.sec-selected:hover{color:var(--primary)}
.sec-arrow{font-size:10px;margin-left:2px;color:#9ca3af}
.sec-dropdown{display:none;position:absolute;top:100%;left:0;margin-top:4px;background:#fff;border-radius:12px;box-shadow:0 4px 16px rgba(0,0,0,.12);min-width:140px;z-index:100;overflow:hidden}
.sec-dropdown.show{display:block}
.sec-option{display:flex;align-items:center;gap:6px;padding:8px 14px;font-size:14px;color:var(--text-primary);cursor:pointer;white-space:nowrap}
.sec-option:hover{background:var(--bg-light)}
.search-input{flex:1;border:none!important;padding:16px 12px;font-size:16px;background:transparent;color:var(--text);outline:none!important;box-shadow:none!important}
.search-input::placeholder{color:var(--text-light)}
.search-btn{background:var(--primary);color:#fff;border:none;padding:16px 28px;cursor:pointer;font-size:15px;font-weight:600;transition:background .15s;white-space:nowrap;flex-shrink:0;display:flex;align-items:center;justify-content:center;border-radius:0 32px 32px 0}
.search-btn:hover{background:var(--primary-dark)}

/* ===== Tools ===== */
.tools-section{background:var(--bg)}
.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}
.tool-card{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius);padding:24px 18px;text-align:center;text-decoration:none;color:var(--text);transition:all .15s}
.tool-card:hover{border-color:var(--primary);transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,0,0,.06)}
.tool-icon{font-size:48px;margin-bottom:10px;display:flex;align-items:center;justify-content:center;height:56px}
.tool-icon img{width:48px;height:48px;object-fit:contain}
.tool-card h3{font-size:14px;margin-bottom:4px;font-weight:600}
.tool-card p{font-size:12px;color:var(--text-secondary)}

/* ===== Help Cards ===== */
.help-cards{max-width:900px;margin:0 auto;display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.help-card{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius);padding:22px 20px;transition:all .15s}
.help-card:hover{border-color:var(--primary);box-shadow:0 4px 16px rgba(0,0,0,.05)}
.help-card h3{font-size:15px;margin-bottom:8px;color:var(--primary)}
.help-card p{font-size:13px;color:var(--text-secondary);line-height:1.7}
.help-card ul{padding-left:18px;font-size:13px;color:var(--text-secondary)}
.help-card li{margin-bottom:4px}
.help-card kbd{background:var(--hover);border:1px solid var(--border);border-radius:3px;padding:1px 6px;font-size:11px;font-family:monospace}

/* ===== Version Table ===== */
.version-table-wrap{max-width:100%;margin:0 auto;overflow-x:auto}
.version-table{width:100%;border-collapse:collapse}
.version-table th{padding:12px 16px;border-bottom:2px solid var(--border);text-align:center;font-weight:600;color:var(--text-secondary);font-size:14px;background:var(--bg)}
.version-table td{padding:12px 16px;border-bottom:1px solid var(--border);text-align:center;font-size:14px}
.version-row{cursor:pointer;transition:background .1s}
.version-row:hover{background:var(--hover)}
.version-changelog{display:none}
.version-changelog.show{display:table-row}
.version-changelog td{padding:12px 16px 16px 24px;font-size:13px;color:var(--text-secondary);line-height:1.7;white-space:pre-wrap;background:var(--sidebar-bg)}

/* ===== Footer ===== */
.site-footer{background:var(--sidebar-bg);border-top:1px solid var(--border);padding:28px 20px 22px;text-align:center;font-size:13px;flex-shrink:0}
.footer-inner{max-width:1400px;margin:0 auto}
.footer-links{display:flex;gap:20px;justify-content:center;margin-bottom:12px}
.footer-links a{color:var(--text-secondary);text-decoration:none;font-size:14px;transition:color .15s}
.footer-links a:hover{color:var(--primary)}
.footer-copy{color:var(--text-light)}
.footer-icp{margin-top:4px}
.footer-icp a{color:var(--text-light);text-decoration:none}
.footer-icp a:hover{color:var(--text-secondary)}