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4px}.submit-area{text-align:center;margin-top:24px}:root{--primary:#4f46e5;--primary-dark:#3730a3;--primary-light:#e0e7ff;--accent:#06b6d4;--success:#10b981;--warning:#f59e0b;--danger:#ef4444;--gray-50:#f8fafc;--gray-100:#f1f5f9;--gray-200:#e2e8f0;--gray-300:#cbd5e1;--gray-500:#64748b;--gray-700:#334155;--gray-900:#0f172a;--radius:10px;--radius-sm:6px;--shadow-sm:0 1px 3px #00000014, 0 1px 2px #0000000d;--shadow:0 4px 12px #0000001a, 0 2px 4px #0000000f;--shadow-lg:0 10px 30px #0000001f, 0 4px 8px #00000014;--font-chinese:"Microsoft YaHei", "PingFang SC", "STHeiti", "SimHei", sans-serif;--color-primary:#4f46e5;--color-selected:#4f46e5;--color-public-repo:#94a3b8;--color-private-repo:#1e293b}*{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;overflow-x:hidden}body{font-size:15px;font-family:var(--font-chinese);color:var(--gray-700);background:linear-gradient(135deg,#f0f4ff 0%,#f8fafc 100%);line-height:1.5}header{z-index:10;background:linear-gradient(135deg,#1e1b4b 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span:nth-child(2){opacity:0}.ham-icon.open span:nth-child(3){transform:translateY(-7px)rotate(-45deg)}.nav-dropdown{border-bottom:1px solid var(--gray-200);z-index:100;background:#fff;flex-direction:column;padding:8px 0;display:flex;position:absolute;top:100%;left:0;right:0;box-shadow:0 8px 24px #0000001f}.nav-dropdown a{color:var(--gray-700);cursor:pointer;border-radius:0;padding:13px 24px;font-size:1em;font-weight:500;text-decoration:none;transition:background .12s}.nav-dropdown a:hover,.nav-dropdown a.active{background:var(--primary-light);color:var(--primary)}@media (width<=768px){.pinyin-layout{flex-direction:column!important}.pinyin-sidebar{flex-flow:wrap!important;gap:6px!important;width:100%!important;max-height:none!important;padding:8px!important;display:flex!important;position:static!important}.pinyin-sidebar button{flex:none;text-align:center!important;width:auto!important}}@media (width<=640px){header{height:auto;padding:10px 16px}header img.header-logo{height:40px}.header-title{white-space:normal;font-size:.92em;line-height:1.3}.header-address{display:none}#nav-menu{justify-content:flex-end;height:48px;padding:0 16px;position:relative}.nav-links{display:none}.nav-hamburger{justify-content:center;align-items:center;display:flex}#main{padding:16px 14px 24px}.login-card{flex-direction:column!important}.login-card-left{flex:none!important;min-height:0!important;padding:32px 24px!important}.login-card-right{padding:28px 24px!important}.page-two-col{flex-direction:column}.page-two-col .page-left{flex:none;max-width:100%}.page-two-col .page-right{width:100%}.app-footer{padding:14px 16px}.app-footer-inner{flex-direction:column;gap:4px}.app-footer-divider{display:none}}.app-shell{flex-direction:column;min-height:100vh;display:flex}.app-shell #main{flex:1}.app-footer{color:#ffffffb3;text-align:center;letter-spacing:.02em;border-top:3px solid var(--primary);background:linear-gradient(90deg,#1e1b4b 0%,#312e81 100%);padding:18px 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