:root{--sky-50: #f4f9fd;--sky-100: #e7f3fb;--sky-200: #cfe6f6;--sky-300: #a9d2ef;--sky-400: #7eb6e8;--sky-500: #4f97d6;--sky-600: #2f78b8;--sky-700: #245f93;--ink: #16324a;--muted: #5d7388;--line: rgba(79, 151, 214, .18);--white: #ffffff;--shadow: 0 18px 50px rgba(47, 120, 184, .12);--radius: 22px;--max: 1120px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Avenir Next,PingFang SC,Hiragino Sans GB,Noto Sans SC,sans-serif;color:var(--ink);background:radial-gradient(900px 420px at 90% -10%,rgba(169,210,239,.55),transparent 60%),radial-gradient(700px 380px at -10% 20%,rgba(126,182,232,.28),transparent 55%),var(--sky-50);line-height:1.65}a{color:inherit;text-decoration:none}img{max-width:100%}.wrap{width:min(var(--max),calc(100% - 40px));margin:0 auto}.site-header{position:sticky;top:0;z-index:20;backdrop-filter:blur(16px);background:#f4f9fdd1;border-bottom:1px solid var(--line)}.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:72px;gap:24px}.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.04em}.mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(160deg,var(--sky-300),var(--sky-500));display:grid;place-items:center;color:#fff;box-shadow:0 8px 18px #4f97d659}.mark svg{width:20px;height:20px}nav{display:flex;gap:22px;color:var(--muted);font-size:15px}nav a:hover,nav a[aria-current=page]{color:var(--sky-600)}.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;padding:12px 20px;background:linear-gradient(180deg,var(--sky-400),var(--sky-500));color:#fff;font-weight:600;box-shadow:0 10px 24px #4f97d647}.btn.ghost{background:#fff;color:var(--sky-600);border:1px solid var(--sky-200);box-shadow:none}.hero{padding:72px 0 36px;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:999px;background:var(--sky-100);color:var(--sky-700);font-size:13px;font-weight:600}h1,h2,h3{line-height:1.2;margin:0}h1{margin-top:18px;font-size:clamp(40px,5vw,64px);letter-spacing:-.03em}.lead{margin:18px 0 28px;max-width:560px;color:var(--muted);font-size:18px}.actions{display:flex;gap:12px;flex-wrap:wrap}.panel{background:#ffffffc7;border:1px solid white;border-radius:28px;box-shadow:var(--shadow);padding:22px}.panel-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;color:var(--muted);font-size:13px}.creator{display:grid;grid-template-columns:44px 1fr auto;gap:12px;align-items:center;padding:12px 0;border-top:1px solid var(--line)}.avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(160deg,var(--sky-200),var(--sky-400))}.creator strong{display:block;font-size:15px}.creator span,.tag{color:var(--muted);font-size:13px}.tag{background:var(--sky-100);color:var(--sky-700);border-radius:999px;padding:4px 10px}.section{padding:28px 0 64px}.section h2{font-size:34px;letter-spacing:-.02em}.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:22px}.section-head p{margin:0;max-width:420px;color:var(--muted)}.grid-4,.grid-3,.grid-2{display:grid;gap:16px}.grid-4{grid-template-columns:repeat(4,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-2{grid-template-columns:1.1fr .9fr}.card{background:#ffffffdb;border:1px solid rgba(255,255,255,.9);border-radius:var(--radius);padding:22px;box-shadow:0 10px 30px #2f78b80f}.card h3{margin-bottom:8px;font-size:18px}.card p{margin:0;color:var(--muted)}.num{color:var(--sky-500);font-weight:700;letter-spacing:.08em;font-size:13px}.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.chip{background:#fff;border:1px solid var(--sky-200);color:var(--sky-700);border-radius:999px;padding:8px 14px}.page-hero{padding:56px 0 12px}.page-hero p{max-width:640px;color:var(--muted);font-size:18px}form{display:grid;gap:12px}label{display:grid;gap:6px;font-size:14px;color:var(--muted)}input,textarea,select{width:100%;border:1px solid var(--sky-200);background:#fff;border-radius:14px;padding:12px 14px;font:inherit;color:var(--ink)}textarea{min-height:120px;resize:vertical}.note{font-size:13px;color:var(--muted)}.site-footer{border-top:1px solid var(--line);padding:28px 0 40px;color:var(--muted);font-size:14px}.footer-inner{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}@media(max-width:860px){nav{display:none}.hero,.grid-4,.grid-3,.grid-2,.section-head{grid-template-columns:1fr;display:grid}.hero{padding-top:40px}h1{font-size:40px}}