:root{--ink:#183530;--muted:#70847e;--green:#16735e;--line:#e2eae5;--paper:#f5f7f2}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.65 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft Yahei",sans-serif}a{color:var(--green);text-decoration:none}header{max-width:1200px;margin:auto;padding:28px 40px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:12px;font-weight:700;font-size:20px;color:var(--ink)}.brand-icon{background:var(--ink);color:white;width:38px;height:38px;display:grid;place-items:center;border-radius:12px;font:italic 30px Georgia}.brand-sub{font-size:13px;font-weight:400;color:var(--muted);border-left:1px solid #d4ded7;padding-left:12px}.header-link{font-size:13px}.layout{max-width:1080px;margin:35px auto 60px;display:grid;grid-template-columns:1fr 440px;gap:70px;align-items:center;padding:0 32px}.eyebrow{font-size:12px;letter-spacing:2px;color:var(--green);font-weight:600}.intro h1{font-size:48px;line-height:1.45;letter-spacing:-1.5px;margin:18px 0}.intro p{color:var(--muted);font-size:16px;line-height:1.9}.orbit{height:220px;width:280px;position:relative;display:grid;place-items:center;margin:25px 0}.orbit-ring{position:absolute;width:260px;height:125px;border:1px solid #b6c9bc;border-radius:50%;transform:rotate(-30deg)}.orbit-ring.two{transform:rotate(40deg);border-color:#d2b78e}.nucleus{font:italic 72px Georgia;color:#457362}.particle{position:absolute;width:12px;height:12px;background:#cfaa70;left:35px;top:142px;border-radius:50%;box-shadow:0 0 0 7px #cfaa701c}.intro-note{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:8px}.dot{height:6px;width:6px;background:#55977e;border-radius:50%}.card{background:white;border:1px solid var(--line);border-radius:24px;padding:38px;box-shadow:0 15px 60px #17392b06}.muted{color:var(--muted)}h2{font-size:27px;letter-spacing:-.7px;margin:9px 0 10px}.hint{font-size:13px;color:var(--muted);line-height:1.8;margin:0 0 25px}label{display:block;font-size:13px;font-weight:600;margin:17px 0 7px}.optional{font-weight:400;color:var(--muted);font-size:11px;margin-left:5px}input{width:100%;border:1px solid var(--line);border-radius:10px;padding:13px 14px;font:inherit;font-size:13px;background:#fafcf9;color:var(--ink)}input:focus{outline:2px solid #b7d7c9;border-color:var(--green)}input::placeholder{color:#97a69e;font-size:12px}button{font:inherit;cursor:pointer}.primary{width:100%;margin-top:26px;padding:13px 18px;background:var(--green);color:white;border:0;border-radius:10px;font-weight:600;display:flex;justify-content:space-between;align-items:center}.primary:hover{background:#125d4d}.secondary{border:1px solid var(--line);border-radius:10px;padding:12px 18px;margin-top:12px;text-align:center}.link-button{display:flex;justify-content:center;gap:25px}.switch{margin-top:23px;text-align:center;font-size:13px;color:var(--muted)}.switch a{font-weight:600}.footnote{font-size:12px;color:var(--muted);line-height:1.85;margin-top:24px;padding-top:19px;border-top:1px solid var(--line)}.error{font-size:13px;background:#fff0ec;border:1px solid #f1d5cd;color:#a54735;padding:11px 14px;border-radius:10px;margin:16px 0}.profile-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.avatar{width:56px;height:56px;border-radius:18px;background:#e4efe6;display:grid;place-items:center;font-size:26px;font-weight:600}.badge{font-size:12px;padding:3px 12px;border:1px solid var(--line);border-radius:99px}dl{margin:25px 0}dl div{display:flex;justify-content:space-between;padding:14px 0;border-bottom:1px solid var(--line);font-size:14px}dt{color:var(--muted)}dd{margin:0;overflow-wrap:anywhere;max-width:65%;text-align:right}.success{color:var(--green)}.text-button{border:0;background:none;width:100%;color:var(--muted);font-size:13px;margin-top:22px}footer{text-align:center;font-size:12px;color:#86958c;margin:25px}footer span{padding:0 10px}@media(max-width:820px){header{padding:20px}.layout{grid-template-columns:1fr;gap:24px;margin:12px auto 36px;max-width:510px;padding:0 20px}.intro h1{font-size:31px;margin:10px 0}.intro h1 br{display:none}.intro p{font-size:13px}.orbit,.intro-note{display:none}.card{padding:28px}.intro .eyebrow{font-size:10px}.brand-sub{display:none}}@media(prefers-reduced-motion:no-preference){a,button{transition:background .15s ease}}