.mobile-showcase { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); align-items: center; gap: 40px; padding: 64px 48px 42px; margin-top: 80px; border: 1px solid #2e4850; border-radius: 12px; background: radial-gradient(ellipse at 80% 55%, #244b4547, transparent 65%), #101e29; }
.mobile-copy .eyebrow { gap: 10px; letter-spacing: .05em; }
.development-badge { border: 1px solid #4b626b; border-radius: 4px; color: #a2b3bf; padding: 2px 7px; font-size: 12px; font-weight: 400; letter-spacing: 0; white-space: nowrap; }
.mobile-copy h3 { margin-top: 24px; font-size: clamp(30px, 3.1vw, 44px); line-height: 1.5; font-weight: 550; letter-spacing: -.03em; }
.mobile-copy > p:not(.eyebrow) { color: #a0b2c1; font-size: 18px; line-height: 1.95; margin-top: 20px; max-width: 370px; }
.mobile-features { list-style: none; margin: 30px 0 0; padding: 0; }
.mobile-features li { display: flex; gap: 15px; margin-top: 24px; }
.mobile-features .icon { color: var(--accent); margin-top: 5px; }
.mobile-features h4 { font-size: 18px; font-weight: 500; margin: 0; line-height: 1.8; }
.mobile-features p { font-size: 15px; line-height: 1.8; color: #90a4b5; margin-top: 5px; }
.mobile-preview { min-width: 0; }
.mobile-phones { display: grid; grid-template-columns: repeat(2, minmax(0, 252px)); justify-content: center; align-items: start; gap: 18px; }
/* 机身由宽度确定高度，内容只能在屏幕内部排版，不能参与机身尺寸计算。 */
.phone-frame { display: flex; flex-direction: column; width: 100%; aspect-ratio: 1 / 2; min-width: 0; min-height: 0; color: #293b37; border: 5px solid #25333a; border-radius: 32px; background: #f8f8f3; box-shadow: 0 20px 45px #0005, 0 0 0 1px #607174; overflow: hidden; font-size: 12px; user-select: none; }
.phone-status { flex-shrink: 0; height: 28px; padding: 10px 14px 0; display: flex; align-items: flex-start; justify-content: space-between; font-size: 9px; font-weight: 600; }
.phone-island { background: #25333a; width: 64px; height: 16px; border-radius: 14px; margin-top: -6px; }
.phone-body { flex: 1; min-height: 0; overflow: hidden; padding: 8px 14px 10px; }
.phone-brand { display: flex; gap: 7px; align-items: center; font-size: 17px; font-weight: 600; }
.phone-avatar { margin-left: auto; width: 27px; height: 27px; background: #e6ede6; color: #6d8678; font-size: 12px; border-radius: 50%; display: grid; place-items: center; }
.phone-greeting { display: none; }
.phone-body h4 { font-size: 20px; margin: 4px 0 10px; font-weight: 600; }
.phone-summary { border-radius: 11px; padding: 12px; color: #f2fbf6; background: linear-gradient(130deg,#47755f,#6a9480); }
.phone-summary > span { font-size: 11px; color: #e1eee5; }
.phone-summary strong { display: block; font-size: 30px; font-weight: 550; line-height: 1.2; margin-top: 2px; }
.phone-summary small { font-size: 11px; margin-left: 7px; font-weight: 400; }
.phone-summary p { font-size: 10px; margin-top: 4px; color: #dbece1; }
.phone-row-heading { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin: 14px 0 8px; }
.phone-row-heading strong { font-size: 13px; font-weight: 600; }
.phone-row-heading > span { font-size: 9px; color: #87958d; }
.phone-notice { display: flex; gap: 9px; margin-top: 12px; }
.phone-notice-icon { display: grid; place-items: center; width: 25px; height: 25px; flex: none; border-radius: 7px; background: #e3eee5; color: #5b8b71; }
.phone-notice-icon .icon { width: 14px; height: 14px; }
.notice-amber { background: #f4ebd9; color: #a7874c; }
.phone-notice h5 { margin: 0 0 4px; font-size: 11px; font-weight: 600; }
.phone-notice p { color: #728077; font-size: 10px; }
.phone-notice small { display: block; margin-top: 3px; color: #8a958e; font-size: 9px; }
.phone-notice time { display: block; margin-top: 4px; color: #9ca69f; font-size: 8px; }
.phone-progress { border-top: 1px solid #e5e8e0; padding-top: 10px; margin-top: 12px; }
.phone-progress > span { display: flex; justify-content: space-between; gap: 5px; font-size: 9px; color: #718377; }
.phone-progress b { font-weight: 500; }
.phone-progress > i { display: block; margin-top: 9px; height: 4px; border-radius: 4px; background: linear-gradient(to right, #6d9b80 70%, #e5ebe2 70%); }
.phone-nav { display: flex; flex-shrink: 0; justify-content: space-around; padding: 7px 0 10px; border-top: 1px solid #e4e8df; background: #fcfcf9; color: #9aa69f; }
.phone-nav > span { display: flex; flex-direction: column; align-items: center; gap: 4px; font-size: 9px; }
.phone-nav .icon { width: 17px; height: 17px; }
.phone-nav .is-active { color: #57836b; }
.phone-page-title { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; font-size: 17px; font-weight: 600; }
.phone-page-title span { font-size: 12px; }
.phone-class { display: flex; align-items: center; gap: 8px; font-size: 16px; font-weight: 600; }
.phone-class span { color: #6f937c; border-radius: 3px; background: #e9f0e6; padding: 3px 5px; font-size: 10px; font-weight: 400; }
.phone-subtitle { color: #89958c; font-size: 10px; margin-top: 5px; }
.phone-metrics { display: grid; grid-template-columns: 1fr 1fr; background: #edf2e9; border-radius: 10px; padding: 10px 12px; margin-top: 12px; }
.phone-metrics > div + div { border-left: 1px solid #dce4d7; padding-left: 15px; }
.phone-metrics small { color: #7d8d7f; font-size: 10px; }
.phone-metrics strong { display: block; font-size: 26px; font-weight: 550; margin-top: 4px; }
.phone-metrics em { font-style: normal; font-size: 12px; margin-left: 2px; }
.phone-chart { display: flex; align-items: center; gap: 10px; }
.phone-chart svg { width: 76px; flex: 0 0 76px; }
.phone-chart text { fill: #3d5848; font-size: 23px; font-family: var(--font); }
.phone-chart .chart-unit { fill: #88988b; font-size: 8px; }
.phone-chart p { display: flex; align-items: center; gap: 5px; font-size: 9px; color: #869287; margin-block: 10px; white-space: nowrap; }
.phone-chart b { font-weight: 500; color: #536959; margin-left: 2px; }
.phone-chart i { width: 5px; height: 5px; border-radius: 50%; background: #629a81; }
.phone-chart p:nth-child(2) i { background: #a8c6b6; }
.phone-chart p:nth-child(3) i { background: #e1e2d7; }
.phone-knowledge p { display: flex; justify-content: space-between; font-size: 10px; color: #6a7c6f; margin-top: 8px; }
.phone-knowledge i { display: block; height: 4px; border-radius: 5px; margin-top: 5px; background: linear-gradient(to right, #8cae94 var(--mastery), #e7ebe1 var(--mastery)); }
.phone-insight { margin-top: 18px; padding: 10px 7px; border-radius: 5px; color: #7b8e63; background: #eef1e3; font-size: 9px; white-space: nowrap; }
.phone-insight .icon { width: 12px; height: 12px; margin-right: 2px; }
.mobile-preview-caption { margin-top: 22px; font-size: 12px; text-align: center; color: #7e94a3; }
@media (max-width: 1120px) {
  .mobile-showcase { grid-template-columns: 1fr; padding: 40px; gap: 40px; }
  .mobile-copy > p:not(.eyebrow) { max-width: 620px; }
  .mobile-features { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin-top: 10px; }
  .mobile-phones { gap: 28px; }
}
@media (max-width: 600px) {
  .mobile-showcase { padding: 32px 22px 26px; margin-top: 45px; gap: 30px; }
  .mobile-copy > p:not(.eyebrow) { font-size: 16px; }
  .mobile-features { display: block; }
  .mobile-features h4 { font-size: 16px; }
  .mobile-features p { font-size: 14px; }
  .phone-learning { display: none; }
  .mobile-phones { grid-template-columns: minmax(0, 252px); }
}