/* 落地页和选机专用。变量和通用组件在 app.css，先加载 app.css。 */
section { padding-block: clamp(3.5rem, 9vw, 6.5rem); }
section > h2 { font-size: clamp(1.9rem, 5vw, 2.9rem); margin-bottom: clamp(1.75rem, 4vw, 3rem); }

.hero { padding-top: clamp(4rem, 11vw, 7.5rem); padding-bottom: 0; text-align: center; }
.hero h1 { margin: 1.4rem 0 1.2rem; font-size: clamp(2rem, 10.5vw, 6.25rem); letter-spacing: -.03em; line-height: 1.05; }
.hero h1 span, .lead span { display: inline-block; }
.hero h1 em { font-style: normal; color: transparent; background: linear-gradient(115deg, #d6f8ee 10%, #63d2b5 90%); -webkit-background-clip: text; background-clip: text; }
.lead { color: var(--muted); font-size: clamp(1.02rem, 2.6vw, 1.3rem); }
.actions { display: flex; flex-wrap: wrap; justify-content: center; gap: .75rem; margin-top: 2.25rem; }

.screen { width: min(100%, 58rem); margin: clamp(3rem, 8vw, 5rem) auto 0; padding: .45rem; border: 1px solid var(--line); border-bottom: 0; border-radius: 1.2rem 1.2rem 0 0; background: linear-gradient(#ffffff14, #ffffff05); box-shadow: 0 -2rem 7rem -1rem #2b93804d; -webkit-mask-image: linear-gradient(#000 55%, transparent); mask-image: linear-gradient(#000 55%, transparent); }
.screen-bar { display: flex; align-items: center; gap: .4rem; padding: .35rem .6rem .7rem; font-size: .74rem; color: var(--muted); }
.screen-bar i { width: .55rem; height: .55rem; border-radius: 50%; background: #ffffff2e; }
.screen-bar span { margin-left: .5rem; }
.screen-bar b { margin-left: auto; font-weight: 400; color: var(--accent); }
.screen-bar b::before { content: ""; display: inline-block; width: .4rem; height: .4rem; margin-right: .4rem; border-radius: 50%; background: var(--accent); vertical-align: .08em; }
.screen-body { position: relative; aspect-ratio: 16 / 7.4; border-radius: .8rem .8rem 0 0; background: radial-gradient(115% 130% at 78% -8%, #9be8d2 0, #2f8f7c 26%, #10302b 58%, #0a1513 82%); overflow: hidden; }
.window { position: absolute; left: 8%; top: 13%; width: 44%; height: 62%; padding: 7% 4.5% 0; border: 1px solid #ffffff2b; border-radius: .7rem; background: #0b1614b8; -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); }
.window u { display: block; height: 7%; margin-bottom: 8%; border-radius: 1rem; background: #ffffff30; }
.window u:nth-child(2) { width: 70%; }
.window u:nth-child(3) { width: 45%; }
.dock { position: absolute; left: 50%; top: 82%; display: flex; gap: .5rem; padding: .45rem .6rem; border: 1px solid #ffffff2b; border-radius: .9rem; background: #ffffff1f; transform: translateX(-50%); }
.dock i { width: clamp(.8rem, 2.6vw, 1.5rem); aspect-ratio: 1; border-radius: .35rem; background: #ffffffb3; }

.pillars { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); padding-block: 0; border-block: 1px solid var(--line); }
.pillars article { padding: clamp(1.5rem, 3vw, 2.25rem) clamp(1rem, 2vw, 1.5rem); border-left: 1px solid var(--line); }
.pillars article:first-child { border-left: 0; padding-left: 0; }
.pillars h2 { font-size: clamp(1.35rem, 2.4vw, 1.75rem); margin-bottom: .5rem; }
.pillars p, .steps p { color: var(--muted); font-size: .93rem; }

.steps ol { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(1rem, 4vw, 3rem); list-style: none; counter-reset: step; }
.steps li { padding-top: 1.25rem; border-top: 1px solid var(--line); counter-increment: step; }
.steps li::before { content: counter(step, decimal-leading-zero); display: block; margin-bottom: 1.5rem; color: var(--accent); font-size: .82rem; letter-spacing: .14em; font-variant-numeric: tabular-nums; }
.steps h3 { font-size: clamp(1.35rem, 2.4vw, 1.75rem); margin-bottom: .45rem; }

.order { border-top: 1px solid var(--line); }
.order-grid { display: grid; grid-template-columns: minmax(0, 1fr) 21rem; gap: clamp(1.5rem, 4vw, 3.5rem); align-items: start; }

.summary { position: sticky; top: 5.25rem; padding: 1.6rem; border: 1px solid var(--line); border-radius: 1.2rem; background: linear-gradient(#ffffff0d, #ffffff05); }
.summary dl div:first-child { padding-top: 0; }
.summary .button { width: 100%; }
.summary .flash { margin-top: 1rem; }

.faq { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr); gap: 1rem clamp(1.5rem, 4vw, 3.5rem); border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq details:first-child { border-top: 1px solid var(--line); }
.faq summary { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-block: 1.2rem; font-size: 1.08rem; list-style: none; cursor: pointer; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--muted); font-size: 1.4rem; font-weight: 300; line-height: 1; }
.faq details[open] summary::after { content: "−"; }
.faq details p { padding-bottom: 1.3rem; color: var(--muted); max-width: 34rem; }

@media (max-width: 60rem) {
  .order-grid { grid-template-columns: minmax(0, 1fr); }
  .summary { position: static; }
  .pillars { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pillars article { padding-inline: 1.1rem; border-top: 1px solid var(--line); }
  .pillars article:nth-child(-n+2) { border-top: 0; }
  .pillars article:nth-child(odd) { border-left: 0; padding-left: 0; }
  .pillars article:last-child { grid-column: 1 / -1; }
  .faq { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 36rem) {
  .top nav a:not(.button):not(.keep) { display: none; }
  .top nav { gap: .9rem; }
  .steps ol { grid-template-columns: minmax(0, 1fr); gap: 1.75rem; }
  .steps li::before { margin-bottom: .7rem; }
  .pillars article { padding-right: 0; }
  .pillars p { font-size: .86rem; text-wrap: balance; }
  #regions.options.three { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  #systems small { display: none; }
}