:root{--bg:#EEF2F5;--header:#101820;--hero:#152632;--btn:#3EC6E0;--btnText:#06171B;--title:#fff;--text:#C6D5DD;--ok:#44C78A;--mid:#F1B85B;--err:#D96C6C;--lightTitle:#172733;--lightText:#52636E;--card:#fff;--foot:#101820}
*{box-sizing:border-box}body{margin:0;font-family:Arial,"Microsoft YaHei","PingFang SC","Helvetica Neue",sans-serif;background:var(--bg);color:var(--lightText);line-height:1.82;overflow-x:hidden}img{max-width:100%;height:auto;object-fit:contain;display:block}a{text-decoration:none;color:inherit}.wrap{width:min(1200px,calc(100% - 40px));margin:0 auto}.site-header{background:var(--header);position:sticky;top:0;z-index:20}.bar{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700}.brand img{display:block;width:auto;height:38px;max-width:180px;max-height:42px;object-fit:contain;flex-shrink:0}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 18px;border-radius:999px;border:1px solid transparent;font-weight:700}.btn-primary{background:var(--btn);color:var(--btnText)}.btn-secondary{background:transparent;border-color:rgba(255,255,255,.22);color:#fff}.hero{background:var(--hero);padding:46px 0;color:var(--text)}.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:center}.hero h1,.section h2{margin:0 0 14px;line-height:1.15}.hero h1{color:#fff;font-size:clamp(34px,4.4vw,58px)}.file-panel{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.08);border-radius:28px;padding:24px;display:grid;gap:18px}.file-panel div{display:flex;justify-content:space-between;gap:18px;border-bottom:1px solid rgba(255,255,255,.08);padding-bottom:14px}.file-panel div:last-child{border-bottom:0;padding-bottom:0}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}.section{padding:56px 0}.panels,.save-grid,.faq-grid{display:grid;gap:18px}.panels{grid-template-columns:repeat(3,1fr)}.panels article,.save-grid article,.faq-grid div,.flow-box{background:#fff;border:1px solid #D3DEE5;border-radius:24px;padding:24px}.ok{box-shadow:inset 0 4px 0 var(--ok)}.mid{box-shadow:inset 0 4px 0 var(--mid)}.err{box-shadow:inset 0 4px 0 var(--err)}.arrow-row{display:flex;align-items:center;gap:18px;flex-wrap:wrap;font-weight:700;color:#172733}.arrow-row i{font-style:normal;color:#7A8B95}.save-grid,.faq-grid{grid-template-columns:1fr 1fr}.save-grid ul{margin:0;padding-left:18px}.wide{margin-top:18px}.site-footer{background:var(--foot);color:#D7E4EA;padding:24px 0 90px}.footer-row{display:flex;justify-content:space-between;align-items:center;gap:16px}.mobile-bar{display:none}
@media (max-width:1024px){.hero-grid,.panels,.save-grid,.faq-grid{grid-template-columns:1fr}.footer-row{flex-direction:column;align-items:flex-start}}
@media (max-width:768px){.wrap{width:min(100% - 28px,1200px)}.actions,.bar{flex-direction:column;align-items:flex-start}.btn{width:100%}.mobile-bar{display:flex;position:fixed;left:0;right:0;bottom:0;padding:10px 14px;background:#fff;border-top:1px solid #D3DEE5;min-height:64px}body{padding-bottom:78px}}

.site-brand,.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0;min-width:max-content}
.site-logo,.brand img{display:block;width:auto;height:38px;max-width:180px;max-height:42px;object-fit:contain;flex-shrink:0}
@media (max-width:768px){.site-logo,.brand img{width:auto;height:32px;max-width:150px}}