/* 配色与基础样式 */
:root{--primary:#5b8def;--link:#345fb3;--text:#303744;--muted:#697586;--background:#f7f9fc;--border:#e7ecf3}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;color:var(--text);background:var(--background);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.8;-webkit-font-smoothing:antialiased}a{color:var(--link);text-decoration:none}button{font:inherit}a:focus-visible,button:focus-visible{outline:3px solid var(--primary);outline-offset:5px;border-radius:6px}.container{width:min(100% - 40px,960px);margin-inline:auto}
/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.97);border-bottom:1px solid var(--border)}.navigation{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{color:var(--text);font-size:22px;font-weight:750;letter-spacing:-.8px}.brand span{color:var(--primary)}.nav-links{display:flex;gap:28px;margin:0;padding:0;list-style:none}.nav-links a{display:inline-block;padding:8px 0;color:var(--muted);font-size:14px;transition:color 160ms ease}.nav-links a:hover,.nav-links a[aria-current="location"]{color:var(--link)}.nav-links a[aria-current="location"]{box-shadow:0 2px 0 var(--primary)}.menu-toggle{display:none;padding:6px 12px;border:1px solid var(--border);border-radius:8px;background:white;color:var(--link);cursor:pointer}
/* 首页 */
.hero{padding:86px 0 68px;text-align:center}.avatar{width:124px;height:124px;display:grid;place-items:center;margin:0 auto 26px;border:6px solid white;border-radius:50%;background:#e8efff;color:var(--link);box-shadow:0 10px 30px rgba(56,85,139,.09);font-size:48px;font-weight:650}.eyebrow{margin:0 0 8px;color:var(--link);font-size:12px;font-weight:650;letter-spacing:3px}h1{margin:0;font-size:clamp(40px,7vw,64px);line-height:1.3;letter-spacing:-2px;overflow-wrap:anywhere}.intro{max-width:530px;margin:22px auto 28px;color:var(--muted);font-size:17px}.button{display:inline-flex;min-height:46px;align-items:center;justify-content:center;padding:10px 24px;border-radius:12px;background:var(--primary);color:#142b50;font-size:14px;font-weight:650;transition:transform 160ms ease,box-shadow 160ms ease}.button:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(91,141,239,.22)}
/* 关于我、联系我与页脚 */
.content{max-width:720px;margin-inline:auto;padding-bottom:64px}.card{padding:36px;border:1px solid var(--border);border-radius:20px;background:white}.card+.card{margin-top:22px}.section-label{margin:0 0 6px;color:var(--link);font-size:11px;font-weight:650;letter-spacing:2px}h2{margin:0 0 16px;font-size:25px;letter-spacing:-.5px}.description{margin:0;color:var(--muted)}.interests{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0 0;padding:0;list-style:none}.interests li{padding:5px 12px;border-radius:8px;background:#f1f5fc;color:#536581;font-size:12px}.social-links{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.social-link{width:48px;height:48px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--border);border-radius:13px;background:#fafcff;color:var(--link);transition:background 160ms ease,transform 160ms ease}.social-link:hover{transform:translateY(-3px);background:#edf3ff}.social-link svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.status{margin:12px 0 0;color:var(--muted);font-size:13px}.status:empty{margin:0}.site-footer{padding:26px 20px;border-top:1px solid var(--border);color:var(--muted);text-align:center;font-size:12px}.site-footer p{margin:0}
/* 手机适配；未启用 JS 时仍显示全部导航 */
@media(max-width:600px){.navigation{min-height:68px;flex-wrap:wrap;gap:12px;padding-block:12px}.brand{font-size:20px}.nav-links{gap:16px}.nav-links a{font-size:13px}.js .menu-toggle{display:inline-block}.js .nav-links{display:none;width:100%;padding-bottom:8px}.js .nav-links.is-open{display:flex}.hero{padding:58px 0 44px}.intro{font-size:15px}.card{padding:26px 22px;border-radius:16px}.content{padding-bottom:44px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important}}

.navigation{flex-wrap:wrap;padding-block:16px}.nav-links{flex-wrap:wrap;gap:16px}.page-heading{padding:50px 0 25px}.page-heading h1{font-size:38px}.entry{margin-bottom:20px}input,textarea{display:block;width:100%;padding:12px;border:1px solid var(--border);border-radius:8px;font:inherit}.auth{max-width:540px;margin:40px auto}.auth button{border:0;cursor:pointer}.helptext,.auth ul{font-size:13px;color:var(--muted)}