/* Each chapter owns a complete viewport. Long reading stays inside its chapter. */
:root { --screen-bar: 52px; }
.fullpage-ready { scroll-snap-type:y mandatory; scroll-padding-top:0; scroll-behavior:auto; overflow-y:scroll; scrollbar-width:thin; scrollbar-color:#c4a173 #0c120f; scrollbar-gutter:stable; }
.fullpage-ready::-webkit-scrollbar { display:block; width:10px; }
.fullpage-ready::-webkit-scrollbar-track { background:#0c120f; }
.fullpage-ready::-webkit-scrollbar-thumb { background:#c4a173; border:2px solid #0c120f; border-radius:8px; }
.fullpage-ready::-webkit-scrollbar-thumb:hover { background:#e8bf82; }
.fullpage-ready::-webkit-scrollbar-button { display:none; }
.page-frame { height:100dvh; min-height:100dvh; max-height:100dvh; overflow-x:hidden; overflow-y:auto; overscroll-behavior-y:contain; scroll-snap-align:start; scroll-snap-stop:always; scroll-margin:0; scrollbar-width:thin; scrollbar-color:#bba17d50 transparent; }
.page-frame:focus { outline:none; }
.page-frame > section, .page-frame > header, .page-frame > footer { min-height:100dvh; box-sizing:border-box; }
.screen-navigation { position:fixed; inset:auto 0 0; z-index:108; height:var(--screen-bar); display:flex; align-items:center; justify-content:space-between; gap:20px; padding:0 var(--journey-pad); border-top:1px solid #ffffff1c; background:#0c120ff2; color:#e8ece4; font-family:var(--sans); }
.screen-position { display:flex; align-items:center; min-width:0; gap:24px; }
.screen-count { flex:none; color:var(--journey-accent); font:400 .75rem/1.5 var(--mono); letter-spacing:.05em; }
.screen-name { overflow:hidden; text-overflow:ellipsis; white-space:nowrap; font-size:.8125rem; }
.screen-actions { display:flex; gap:5px; }
.screen-actions button { flex:none; width:44px; height:44px; border:0; background:none; color:inherit; font-size:22px; }
.screen-actions button:hover:not(:disabled) { color:var(--journey-accent); background:#ffffff09; }
.fullpage-ready .back-to-top, .fullpage-ready .vision-scroll { display:none; }
.fullpage-ready .cookie-banner { bottom:calc(var(--screen-bar) + 16px); }
.fullpage-ready .arrival--vision { height:100dvh; min-height:100dvh; padding:0; display:block; }
.fullpage-ready .vision-copy { position:absolute; left:var(--vision-gutter); right:var(--vision-gutter); bottom:max(86px,8dvh); }
.fullpage-ready .chapter-intro { display:flex; flex-direction:column; justify-content:center; padding:calc(var(--nav-height) + clamp(28px,5dvh,70px)) var(--journey-pad) calc(var(--screen-bar) + clamp(28px,5dvh,70px)); }
.fullpage-ready .chapter-title { margin:clamp(25px,4.5dvh,58px) 0; font-size:clamp(3rem,min(7.2vw,10dvh),8rem); }
.fullpage-ready .life-intro-heading { margin:clamp(28px,5dvh,65px) 0; }
.fullpage-ready .life-intro-heading .chapter-title { margin:0; }
.fullpage-ready .respiratory-section { height:100dvh; min-height:100dvh; padding-top:var(--nav-height); padding-bottom:var(--screen-bar); display:flex; flex-direction:column; }
.fullpage-ready .journey-header { flex:none; padding:20px var(--journey-pad) 16px; gap:24px; }
.fullpage-ready .journey-header h2 { margin-top:8px; font-size:clamp(1.6rem,3.3dvh,2.6rem); }
.fullpage-ready .journey-tabs { position:static; flex:none; }
.fullpage-ready .journey-tabs button { min-height:55px; padding:12px 0; }
.fullpage-ready .journey-rail { flex:1 1 0; min-height:0; height:auto !important; }
.fullpage-ready .journey-slide { height:100%; min-height:100%; overflow-y:auto; overscroll-behavior-y:contain; scrollbar-width:thin; }
.fullpage-ready .sense-stage { display:grid; grid-template-columns:1.35fr .65fr; align-items:center; gap:30px; padding:30px var(--journey-pad); }
.fullpage-ready .sense-copy { width:100%; margin:0; }
.fullpage-ready .sense-copy .scene-title { font-size:clamp(2.5rem,5.7dvh,5rem); margin:0 0 20px; }
.fullpage-ready .sense-copy .journey-button { margin-top:24px; }
.fullpage-ready .app-preview { position:relative; inset:auto; justify-self:end; width:clamp(120px,20dvh,230px); margin:0; }
.fullpage-ready .recommendation-link { position:relative; inset:auto; display:grid; margin-top:24px; }
.fullpage-ready .matrix-stage { padding:30px var(--journey-pad); }
.fullpage-ready .care-stage { min-height:100%; display:flex; flex-direction:column; justify-content:center; align-items:flex-start; padding:26px var(--journey-pad) 40px; }
.fullpage-ready .care-copy { width:100%; }
.fullpage-ready .care-stage .stage-image { height:100%; object-fit:cover; }
.fullpage-ready .care-copy .scene-title { font-size:clamp(2.3rem,5dvh,4.5rem); }
.fullpage-ready .care-guidance { width:100%; }
.fullpage-ready .care-caption { left:auto; right:var(--journey-pad); bottom:14px; text-align:right; }
.fullpage-ready .life-product { min-height:100dvh; padding-top:var(--nav-height); padding-bottom:var(--screen-bar); }
.fullpage-ready .life-product .stage-image { height:100%; object-position:center; }
.fullpage-ready .life-product-copy { padding:clamp(30px,7dvh,90px) var(--journey-pad); }
.fullpage-ready .life-product h2 { font-size:clamp(3rem,min(7vw,10dvh),7.5rem); max-width:12ch; }
.fullpage-ready .life-shade { background:linear-gradient(90deg,#080f0fdb,#080f0f30 80%),linear-gradient(0deg,#080f0fd1,transparent 70%); }
.system-experience { position:relative; isolation:isolate; min-height:100svh; padding:calc(var(--nav-height) + 50px) var(--journey-pad) calc(var(--screen-bar) + 50px); display:flex; flex-direction:column; justify-content:flex-end; background:#0b1510; }
.system-experience::before { content:''; position:absolute; z-index:-1; inset:0; background:linear-gradient(0deg,#07100fee,#07100e70 56%,#07100e12); }
.system-experience .system-context { margin:0; }
.system-experience .system-context img { position:absolute; z-index:-2; inset:0; width:100%; height:100%; aspect-ratio:auto; object-fit:cover; object-position:right center; }
.system-experience .system-context figcaption { display:block; padding:0; }
.system-experience .system-context figcaption > span { display:block; max-width:14ch; font-size:clamp(2.6rem,6vw,6.5rem); line-height:1.07; text-transform:uppercase; }
.system-experience .system-context figcaption small { display:block; margin-top:20px; color:#d4dacd; }
.system-experience .system-foot { margin-top:30px; }
.fullpage-ready .story-section { padding:calc(var(--nav-height) + 30px) var(--journey-pad) calc(var(--screen-bar) + 40px); align-content:center; }
.fullpage-ready .story-visual { position:relative; top:auto; align-self:center; justify-self:center; width:min(100%,calc(100dvh - var(--nav-height) - var(--screen-bar) - 150px)); margin:0; }
.fullpage-ready .story-copy h2 { margin:26px 0; font-size:clamp(2.3rem,min(4.3vw,7dvh),5.7rem); }
.fullpage-ready .story-origin { margin-bottom:25px; }
.fullpage-ready .story-section .story-chapters summary { min-height:68px; padding:18px 0; }
.fullpage-ready .story-section .story-chapters details { padding:0; }
.fullpage-ready .site-footer { display:flex; flex-direction:column; align-items:stretch; justify-content:center; gap:0; padding:calc(var(--nav-height) + 45px) var(--journey-pad) calc(var(--screen-bar) + 30px); }
@media (min-width:701px) and (max-height:800px) {
  .fullpage-ready .sense-stage { padding-top:20px; padding-bottom:20px; }
  .fullpage-ready .sense-copy .scene-title { margin-bottom:14px; }
  .fullpage-ready .sense-copy .journey-button { margin-top:16px; }
  .fullpage-ready .recommendation-link { grid-template-columns:56px minmax(0,1fr) auto; margin-top:16px; padding:12px; }
  .fullpage-ready .recommendation-visual img { height:44px; }
  .fullpage-ready .recommendation-description { display:none; }
  .fullpage-ready .care-stage { padding-top:18px; padding-bottom:30px; }
  .fullpage-ready .site-footer { padding-top:calc(var(--nav-height) + 24px); padding-bottom:calc(var(--screen-bar) + 16px); }
}
@media (max-width:1050px) {
  .fullpage-ready .care-stage { display:block; padding-top:35px; }
  .fullpage-ready .care-guidance { margin-top:28px; max-width:none; }
  .fullpage-ready .care-caption { position:relative; inset:auto; margin-top:20px; text-align:left; }
  .fullpage-ready .care-stage .scene-shade { background:linear-gradient(180deg,#0a120edb,#0a120eaa); }
}
@media (max-width:700px) {
  .screen-navigation { padding:0 18px; gap:10px; }
  .screen-position { gap:12px; }
  .screen-name { font-size:.75rem; }
  .screen-actions { gap:0; }
  .fullpage-ready .vision-copy { bottom:calc(var(--screen-bar) + 24px); }
  .fullpage-ready .vision-heading { font-size:clamp(2.5rem,min(14.4vw,7.7dvh),5.6rem); }
  .fullpage-ready .vision-kicker { margin-bottom:14px; }
  .fullpage-ready .vision-action { margin-top:20px; min-height:50px; }
  .fullpage-ready .chapter-title { font-size:clamp(2.5rem,10vw,4rem); }
  .fullpage-ready .chapter-intro { padding-top:calc(var(--nav-height) + 35px); padding-bottom:calc(var(--screen-bar) + 35px); }
  .fullpage-ready .life-intro-heading .chapter-title { font-size:clamp(2.5rem,10vw,4rem); }
  .fullpage-ready .journey-header { display:flex; align-items:center; padding:14px var(--journey-pad); }
  .fullpage-ready .journey-header .chapter-label, .fullpage-ready .journey-arrows { display:none; }
  .fullpage-ready .journey-header h2 { margin:0; max-width:16ch; font-size:clamp(1.25rem,5.3vw,1.7rem); }
  .fullpage-ready .journey-controls { margin:0; }
  .fullpage-ready .journey-hint { margin:0; }
  .fullpage-ready .journey-tabs button { min-height:54px; font-size:.8125rem; padding:8px 0; gap:3px; }
  .fullpage-ready .sense-stage { display:block; padding:26px var(--journey-pad); }
  .fullpage-ready .sense-image { height:100%; }
  .fullpage-ready .sense-stage .scene-shade { background:linear-gradient(180deg,#08100cdd,#0b130eac); }
  .fullpage-ready .sense-copy .scene-title { font-size:clamp(2.25rem,9vw,3.5rem); }
  .fullpage-ready .app-preview { width:140px; margin:35px auto 0; }
  .fullpage-ready .recommendation-link { grid-template-columns:50px minmax(0,1fr) auto; gap:12px; padding:14px; margin-top:22px; }
  .fullpage-ready .recommendation-visual img { height:58px; }
  .fullpage-ready .recommendation-link small { letter-spacing:.025em; text-transform:none; }
  .fullpage-ready .recommendation-description { font-size:.875rem; }
  .fullpage-ready .care-stage { padding-top:26px; }
  .fullpage-ready .care-copy .scene-title { font-size:clamp(2.25rem,9vw,3.5rem); }
  .fullpage-ready .life-product-copy { padding-top:30px; padding-bottom:38px; }
  .fullpage-ready .life-product h2 { font-size:clamp(2.7rem,10vw,4rem); }
  .system-experience { padding-top:calc(var(--nav-height) + 35px); padding-bottom:calc(var(--screen-bar) + 35px); }
  .system-experience .system-context figcaption > span { font-size:clamp(2.25rem,10vw,3.5rem); }
  .system-experience .system-context img { object-position:65% center; }
  .system-experience .system-foot { margin-top:24px; }
  .fullpage-ready .story-section { grid-template-columns:1fr; }
  .fullpage-ready .story-copy h2 { font-size:clamp(2.2rem,8.2vw,3.5rem); }
  .fullpage-ready .story-visual { max-width:300px; }
}
@media (max-width:700px) {
  .fullpage-ready :lang(zh-CN) .chapter-title { font-size:clamp(2.1rem,9.5vw,3rem); }
}
@media (max-width:700px) and (max-height:620px) {
  .fullpage-ready .vision-kicker { margin-bottom:10px; }
  .fullpage-ready .vision-mobile-purpose { margin-top:10px; }
  .fullpage-ready .vision-action { margin-top:14px; }
  .fullpage-ready :lang(zh-CN) .vision-heading { line-height:1.06; }
}
@media print {
  .fullpage-ready { scroll-snap-type:none; }
  .page-frame { height:auto; max-height:none; overflow:visible; }
  .screen-navigation { display:none; }
}