/* 大螢幕使用雙欄工作區；手機版維持原有單欄導航。 */
@media (min-width:900px){body{background:linear-gradient(135deg,#e5f0eb,#f7f5ef 42%,#e5f1ed)}.app-shell{max-width:1180px;min-height:100vh;box-shadow:0 18px 70px #163d3417}.topbar{padding:34px 42px 24px}.topbar h1{font-size:34px}.page{padding:0 42px 118px}.hero-card{min-height:240px;display:flex;flex-direction:column;justify-content:center}.hero-card h2{font-size:32px;max-width:16ch}.quick-grid button{min-height:145px}.next-stop{min-height:130px}.bottom-nav{width:min(100%,1180px);padding-left:26px;padding-right:26px}.nav{font-size:12px;min-width:96px}.nav span{font-size:22px}.page.active#homePage{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(290px,.8fr);gap:18px 24px;align-items:start}.page.active#homePage>.hero-card{grid-column:1;grid-row:1 / span 2}.page.active#homePage>.section-heading{grid-column:2;grid-row:1;margin:0;padding-top:4px}.page.active#homePage>.next-stop{grid-column:2;grid-row:2}.page.active#homePage>.quick-grid{grid-column:1;grid-row:3;margin-top:4px}.exchange-card{max-width:760px;margin-left:auto;margin-right:auto}.info-card{max-width:760px;margin-left:auto;margin-right:auto}.timeline,.expense-list,.user-list{max-width:850px}.add-form{max-width:850px}.add-form .form-row{grid-template-columns:minmax(0,1fr) minmax(180px,.5fr)}}