/* 首页独立样式：沿用一号语义色彩，避免改变用户中心布局。 */
html { scroll-behavior: smooth; scroll-padding-top: 110px; }
.landing-page {
  --font-body: 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  --font-number: var(--font-body);
  --landing-glass: #ffffffa3;
  --landing-edge: #ffffffe0;
  --landing-rule: #91b9c53b;
  --landing-check: #288a950b;
  --landing-shadow: #326b7c0b;
  background: radial-gradient(ellipse at 8% 4%,#cdf0ec99,transparent 33%),radial-gradient(ellipse at 95% 13%,#d6e9fa8c,transparent 30%),var(--color-bg);
  font-size: 15px;
  line-height: 1.85;
}
[data-theme=dark] .landing-page {
  --landing-glass: #1d3541a8;
  --landing-edge: #abcdd928;
  --landing-rule: #81a7b72f;
  --landing-check: #b8e6e60a;
  --landing-shadow: #00000015;
  background: radial-gradient(ellipse at 8% 4%,#214c4c77,transparent 33%),radial-gradient(ellipse at 95% 13%,#213a5277,transparent 30%),var(--color-bg);
}
.landing-page [hidden] { display: none !important; }
.landing-container { width: min(1200px,calc(100% - 80px)); margin-inline: auto; }
.landing-page .icon { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.65; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; }
.landing-page h1,.landing-page h2,.landing-page h3 { font-weight: 600; }
.landing-page h2 { font-size: clamp(26px,3vw,36px); line-height: 1.5; letter-spacing: -.8px; }
.landing-page h3 { font-size: 20px; line-height: 1.5; }
.landing-page a,.landing-page button { transition: color 180ms ease,background 180ms ease,transform 180ms ease,box-shadow 180ms ease; }
.skip-link { position: fixed; z-index: 100; top: 12px; left: 12px; padding: 10px 18px; background: var(--color-surface); border: 2px solid var(--color-primary); border-radius: 10px; transform: translateY(-150%); }
.skip-link:focus { transform: none; }
.site-header { position: sticky; top: 0; z-index: 30; background: var(--landing-glass); backdrop-filter: blur(24px) saturate(135%); -webkit-backdrop-filter: blur(24px) saturate(135%); border-bottom: 1px solid var(--landing-edge); box-shadow: 0 1px 0 var(--landing-rule); }
.header-inner { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; min-height: 88px; gap: 24px; }
.landing-brand { display: flex; gap: 12px; align-items: center; color: var(--color-text); font-size: 24px; font-weight: 650; width: fit-content; }
.landing-brand img { flex-shrink: 0; filter: drop-shadow(0 4px 8px #087d8815); }
.landing-brand span { white-space: nowrap; }
.landing-brand small { display: block; font-size: 10px; font-weight: 400; color: var(--color-muted); letter-spacing: 1px; line-height: 1.2; }
.landing-brand:hover img { transform: translateY(-2px); }
.landing-nav { display: flex; justify-content: center; gap: 12px; }
.landing-nav a { color: var(--color-muted); padding: 10px 14px; border-radius: 12px; font-size: 14px; white-space: nowrap; }
.landing-nav a:hover { background: var(--color-soft); color: var(--color-primary); }
.header-actions { display: flex; justify-content: flex-end; gap: 12px; }
.round-button,.landing-avatar { display: inline-flex; width: 44px; height: 44px; align-items: center; justify-content: center; border: 1px solid var(--landing-rule); border-radius: 50%; background: var(--landing-glass); color: var(--color-primary); padding: 0; flex-shrink: 0; }
.round-button:hover,.landing-avatar:hover { background: var(--color-soft); box-shadow: 0 0 0 4px var(--landing-rule); }
.landing-avatar img { border-radius: 50%; }
.navigation-toggle { display: none; }
.intro-section { display: grid; grid-template-columns: 1.05fr 1fr; align-items: center; gap: 36px; padding-block: 70px 56px; min-height: 644px; }
.section-kicker { font-size: 13px; color: var(--color-primary); margin-bottom: 18px; font-weight: 500; letter-spacing: .8px; }
.intro-copy .section-kicker { display: flex; align-items: center; gap: 10px; }
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--color-primary); box-shadow: 0 0 0 5px #158c8c10; }
.intro-copy h1 { font-size: clamp(42px,4.5vw,62px); line-height: 1.35; letter-spacing: -1.6px; margin-bottom: 24px; }
.intro-copy h1 span { color: var(--color-primary); }
.intro-description { font-size: 16px; line-height: 2; max-width: 480px; }
.landing-actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-top: 32px; }
.landing-button { display: inline-flex; justify-content: center; align-items: center; gap: 12px; min-height: 50px; padding: 12px 23px; border: 1px solid var(--landing-rule); border-radius: 12px; background: var(--landing-glass); color: var(--color-text); font-size: 14px; font-weight: 500; }
.landing-button.primary { background: var(--color-primary); color: var(--color-on-primary); border-color: var(--color-primary); box-shadow: 0 6px 16px #087d8817; }
.landing-button:hover { transform: translateY(-2px); box-shadow: 0 8px 24px var(--landing-shadow); }
.landing-button:active { transform: translateY(0); }
.landing-button:disabled { transform: none; box-shadow: none; }
.intro-benefits { display: flex; flex-wrap: wrap; gap: 23px; margin-top: 25px; color: var(--color-muted); font-size: 12px; }
.intro-benefits span { display: inline-flex; align-items: center; gap: 6px; }
.intro-benefits .icon { width: 15px; height: 15px; color: var(--color-primary); }
.intro-visual { position: relative; min-width: 0; text-align: center; align-self: stretch; display: flex; justify-content: center; align-items: center; flex-direction: column; }
.visual-orbit { position: absolute; inset: 4% 1%; z-index: -1; background: radial-gradient(ellipse,#a8e0dd50,transparent 68%); }
.champion-art { width: 112%; max-width: 112%; height: auto; display: block; animation: trophy-arrive 850ms ease-out both; }
.visual-note { display: flex; align-items: center; text-align: left; gap: 12px; position: absolute; left: 1%; top: 4%; padding: 16px 20px; border-radius: 16px; background: var(--landing-glass); border: 1px solid var(--landing-edge); box-shadow: 0 12px 28px var(--landing-shadow); backdrop-filter: blur(16px); }
.visual-note strong { display: block; font-size: 13px; font-weight: 500; }
.visual-note div>span { display: block; color: var(--color-muted); font-size: 11px; }
.note-icon { width: 38px; height: 38px; display: grid; place-items: center; border: 1px solid var(--landing-rule); color: var(--color-primary); border-radius: 11px; }
.visual-caption { position: absolute; bottom: 0; right: 5%; font-size: 11px; color: var(--color-muted); letter-spacing: 2px; }
.service-strip { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); padding: 24px 0; border-block: 1px solid var(--landing-rule); }
.service-strip span { display: flex; align-items: center; justify-content: center; gap: 12px; color: var(--color-muted); font-size: 14px; }
.service-strip span+span { border-left: 1px solid var(--landing-rule); }
.service-strip .icon { color: var(--color-primary); }
.landing-section { padding-top: 100px; scroll-margin-top: 18px; }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 28px; margin-bottom: 36px; }
.section-heading .section-kicker { margin-bottom: 12px; }
.section-heading>p { font-size: 14px; line-height: 1.9; }
.feature-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 20px; }
.glass-panel { padding: 30px; border: 1px solid var(--landing-edge); border-radius: 22px; background: var(--landing-glass); box-shadow: 0 0 0 1px var(--landing-rule),0 10px 30px var(--landing-shadow); position: relative; isolation: isolate; min-width: 0; }
.glass-panel::after,.final-panel::after { content: ''; position: absolute; z-index: -1; inset: 0; border-radius: inherit; background: repeating-conic-gradient(var(--landing-check) 0% 25%,transparent 0% 50%) right bottom / 36px 36px; mask-image: radial-gradient(ellipse at 100% 100%,#000,transparent 65%); pointer-events: none; }
.glass-panel h3 { margin: 18px 0 12px; }
.glass-panel p { font-size: 14px; line-height: 1.9; }
.feature-icon { display: grid; place-items: center; width: 42px; height: 42px; background: var(--color-soft); border: 1px solid var(--landing-rule); border-radius: 12px; color: var(--color-primary); }
.feature-featured { grid-row: span 2; display: flex; flex-direction: column; justify-content: space-between; padding: 36px; }
.feature-wide { grid-column: 1 / -1; display: flex; align-items: center; gap: 24px; }
.feature-wide .feature-icon { flex-shrink: 0; }
.feature-wide>div { flex: 1; }
.feature-wide h3 { margin: 0 0 8px; }
.feature-wide .text-link { margin-top: 0; white-space: nowrap; }
.text-link { display: inline-flex; min-height: 44px; align-items: center; gap: 10px; font-size: 13px; margin-top: 14px; }
.text-link:hover { gap: 16px; }
.usage-preview { padding: 24px; margin: 36px 0 8px; background: var(--color-surface); border: 1px solid var(--landing-rule); border-radius: 18px; box-shadow: 0 12px 24px var(--landing-shadow); }
.usage-top,.usage-bottom { display: flex; justify-content: space-between; align-items: center; gap: 10px; font-size: 12px; color: var(--color-muted); }
.preview-tag { border: 1px solid var(--landing-rule); font-size: 10px; border-radius: 20px; padding: 2px 9px; }
.usage-preview p { margin-block: 18px; font-variant-numeric: tabular-nums; }
.usage-preview strong { font-size: 40px; color: var(--color-text); font-weight: 500; }
.usage-track { height: 7px; border-radius: 10px; background: var(--color-soft); margin-bottom: 12px; }
.usage-track span { display: block; height: 100%; width: 24.13%; border-radius: inherit; background: linear-gradient(90deg,#70c5c2,var(--color-primary)); }
.landing-plans { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 22px; }
.landing-plan { display: flex; flex-direction: column; padding: 30px; }
.landing-plan.is-featured { border: 1px solid var(--color-primary); background: linear-gradient(145deg,var(--landing-glass),var(--color-soft)); box-shadow: 0 0 0 3px var(--color-soft); }
.plan-top { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.plan-top h3 { margin: 0; font-size: 23px; }
.plan-tag { font-size: 11px; padding: 3px 10px; border-radius: 20px; background: var(--color-soft); color: var(--color-primary); }
.landing-plan>p { margin-top: 10px; }
.landing-price { display: flex; align-items: baseline; gap: 7px; margin: 25px 0 0; font-variant-numeric: tabular-nums; }
.landing-price strong { font-size: 40px; line-height: 1.2; font-weight: 500; letter-spacing: -1px; }
.landing-price small { color: var(--color-muted); }
.annual-price { font-size: 12px !important; padding-bottom: 22px; border-bottom: 1px solid var(--landing-rule); }
.landing-plan ul { list-style: none; padding: 0; margin: 24px 0 28px; display: grid; gap: 10px; font-size: 13px; color: var(--color-muted); flex: 1; }
.landing-plan li { display: flex; align-items: center; gap: 10px; }
.landing-plan li .icon { width: 15px; height: 15px; color: var(--color-primary); }
.landing-plan .landing-button { width: 100%; }
.plan-disclaimer { margin-top: 22px; text-align: center; font-size: 12px; line-height: 1.8; }
.steps-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 40px; list-style: none; padding: 0; margin: 0; }
.steps-grid li { padding-top: 24px; border-top: 1px solid var(--landing-rule); }
.step-number { color: var(--color-primary); font-size: 14px; display: block; margin-bottom: 18px; font-variant-numeric: tabular-nums; }
.steps-grid p { font-size: 14px; margin: 12px 0 10px; }
.steps-grid a { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; font-size: 13px; }
.faq-section { display: grid; grid-template-columns: .85fr 1.4fr; gap: 70px; }
.faq-intro>p:not(.section-kicker) { margin-top: 20px; font-size: 14px; }
.faq-list details { border-bottom: 1px solid var(--landing-rule); }
.faq-list details:first-child { border-top: 1px solid var(--landing-rule); }
.faq-list summary { display: flex; justify-content: space-between; gap: 18px; align-items: center; min-height: 76px; padding: 20px 0; font-size: 15px; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary span { color: var(--color-primary); font-size: 22px; font-weight: 300; transition: transform 180ms ease; }
.faq-list details[open] summary { color: var(--color-primary); }
.faq-list details[open] summary span { transform: rotate(45deg); }
.faq-list summary:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 4px; border-radius: 4px; }
.faq-list details p { padding: 0 28px 24px 0; font-size: 14px; line-height: 2; }
.final-section { padding-block: 100px 0; }
.final-panel { padding: 40px; border-radius: 24px; border: 1px solid var(--landing-edge); background: var(--landing-glass); box-shadow: 0 0 0 1px var(--landing-rule); display: flex; align-items: center; gap: 28px; position: relative; isolation: isolate; }
.final-panel>div { flex: 1; }
.final-panel .section-kicker { margin-bottom: 7px; }
.final-panel h2 { font-size: 27px; }
.final-panel p:not(.section-kicker) { font-size: 13px; margin-top: 10px; }
.final-panel>.landing-button { flex-shrink: 0; }
.site-footer { display: grid; grid-template-columns: 1fr auto; gap: 32px; padding-block: 52px 30px; }
.footer-brand { color: var(--color-text); font-weight: 600; font-size: 22px; }
.site-footer p { font-size: 12px; margin-top: 7px; }
.site-footer nav { display: flex; align-items: center; gap: 26px; }
.site-footer nav a { color: var(--color-muted); font-size: 12px; min-height: 44px; display: inline-flex; align-items: center; }
.site-footer nav a:hover { color: var(--color-primary); }
.footer-meta { grid-column: 1 / -1; border-top: 1px solid var(--landing-rule); padding-top: 22px; font-size: 11px !important; }
@keyframes trophy-arrive { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }
@media(max-width:1000px) {
  .landing-container { width: calc(100% - 48px); }
  .header-inner { gap: 14px; }
  .landing-nav { gap: 2px; }
  .landing-nav a { padding-inline: 10px; font-size: 13px; }
  .intro-section { padding-block: 56px; gap: 16px; min-height: 570px; }
  .intro-description { font-size: 14px; }
  .champion-art { width: 100%; max-width: 100%; }
  .desktop-break { display: none; }
  .visual-note { padding: 12px; gap: 10px; }
  .visual-note strong { font-size: 12px; }
  .landing-plan { padding: 24px; }
  .landing-plans { gap: 16px; }
  .faq-section { gap: 40px; }
  .final-panel { gap: 20px; padding: 30px; }
  .final-panel>img { display: none; }
}
@media(max-width:760px) {
  html { scroll-padding-top: 96px; }
  .header-inner { min-height: 76px; grid-template-columns: 1fr auto; gap: 0; }
  .landing-brand { font-size: 22px; gap: 9px; }
  .landing-brand img { width: 38px; height: 38px; }
  .landing-brand small { display: none; }
  .header-actions { grid-column: 2; grid-row: 1; gap: 8px; }
  .navigation-toggle { display: inline-flex; }
  .landing-nav { grid-column: 1 / -1; grid-row: 2; width: 100%; gap: 0; justify-content: space-between; padding: 4px 0 14px; }
  .landing-nav a { font-size: 13px; padding: 10px 8px; }
  .navigation-ready .landing-nav:not(.is-open) { display: none; }
  .intro-section { grid-template-columns: 1fr; gap: 16px; padding-block: 42px 28px; min-height: 0; }
  .intro-copy { text-align: center; }
  .intro-copy .section-kicker { justify-content: center; }
  .intro-copy h1 { font-size: 45px; letter-spacing: -1px; margin-bottom: 20px; }
  .intro-description { max-width: 430px; margin-inline: auto; }
  .landing-actions,.intro-benefits { justify-content: center; }
  .intro-benefits { gap: 20px; margin-top: 20px; }
  .intro-visual { width: min(420px,100%); margin-inline: auto; }
  .champion-art { width: 100%; max-width: 100%; }
  .visual-note { top: 0; left: 0; }
  .visual-caption { right: 0; font-size: 10px; }
  .service-strip { grid-template-columns: 1fr 1fr; gap: 22px 0; padding-block: 26px; }
  .service-strip span { font-size: 12px; gap: 9px; }
  .service-strip span:nth-child(3) { border-left: 0; }
  .landing-section { padding-top: 64px; }
  .section-heading { flex-direction: column; align-items: flex-start; gap: 18px; margin-bottom: 26px; }
  .section-heading>p br { display: none; }
  .feature-grid { grid-template-columns: 1fr; gap: 16px; }
  .glass-panel { padding: 26px; }
  .feature-featured { grid-row: auto; }
  .usage-preview { margin-top: 26px; }
  .feature-wide { flex-wrap: wrap; gap: 18px; }
  .feature-wide>div { flex-basis: calc(100% - 60px); }
  .feature-wide .text-link { margin-top: -4px; }
  .landing-plans { grid-template-columns: 1fr; gap: 20px; }
  .landing-plan ul { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 10px; margin: 22px 0; }
  .landing-price { margin-top: 20px; }
  .annual-price { padding-bottom: 18px; }
  .plan-disclaimer { text-align: left; }
  .steps-grid { gap: 24px; grid-template-columns: 1fr; }
  .steps-grid li { display: grid; grid-template-columns: 42px 1fr; gap: 4px 12px; padding-top: 24px; }
  .step-number { grid-row: 1 / 4; margin: 4px 0 0; }
  .steps-grid p { margin: 6px 0; }
  .steps-grid a { grid-column: 2; }
  .faq-section { grid-template-columns: 1fr; gap: 24px; }
  .faq-intro>p:not(.section-kicker) br { display: none; }
  .faq-list summary { min-height: 72px; font-size: 14px; }
  .final-section { padding-top: 64px; }
  .final-panel { flex-direction: column; align-items: stretch; padding: 28px; gap: 26px; }
  .final-panel h2 { font-size: 25px; }
  .site-footer { grid-template-columns: 1fr; padding-top: 36px; gap: 14px; }
  .site-footer nav { gap: 24px; flex-wrap: wrap; }
  .footer-meta { padding-top: 18px; }
}
@media(max-width:400px) {
  .landing-container { width: calc(100% - 32px); }
  .intro-copy h1 { font-size: 39px; }
  .section-kicker { font-size: 11px; }
  .landing-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
  .landing-actions .landing-button { padding: 11px 8px; font-size: 12px; gap: 6px; }
  .intro-benefits { font-size: 11px; gap: 13px; }
  .glass-panel { padding: 22px; }
  .landing-plan ul { grid-template-columns: 1fr; gap: 9px; }
  .usage-preview { padding: 18px; }
  .visual-note { padding: 10px; }
  .visual-caption { letter-spacing: .5px; }
  .landing-nav a { padding-inline: 5px; font-size: 12px; }
  .final-panel { padding: 24px; }
  .site-footer nav { gap: 20px; }
}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))) {
  .site-header { background: var(--color-surface); }
}