:root{
  --mobile-gutter:18px;
  --mobile-safe-top:env(safe-area-inset-top,0px);
  --mobile-safe-bottom:env(safe-area-inset-bottom,0px);
  --mobile-story-progress:.0714;
  --story-height:100svh;
  --header-h:60px;
  --serif:"Iowan Old Style","Baskerville","Songti SC","STSong","Noto Serif SC","Times New Roman",serif;
  --sans:"Avenir Next","Avenir","PingFang SC","Helvetica Neue",sans-serif;
  --mobile-hero-size:clamp(54px,15.2vw,64px);
  --mobile-title-size:clamp(46px,12.5vw,54px);
  --mobile-long-title-size:clamp(32px,9vw,38px);
  --mobile-body-size:18px;
  --mobile-title-leading:.89;
  --mobile-body-leading:1.38;
}

html{
  height:100%;
  overflow:hidden;
  overscroll-behavior-y:none;
  background:var(--ink);
}
html::-webkit-scrollbar{display:none}
body{height:100%;overflow:hidden;overscroll-behavior:none;font-family:var(--sans);font-kerning:normal;text-rendering:optimizeLegibility}
main{
  position:relative;
  width:100%;
  height:var(--story-height);
  overflow-x:hidden;
  overflow-y:auto;
  scroll-snap-type:y mandatory;
  scroll-padding:0;
  overscroll-behavior-y:contain;
  scrollbar-width:none;
  -webkit-overflow-scrolling:touch;
}
main::-webkit-scrollbar{display:none}
html.theater-open main{overflow:hidden;scroll-snap-type:none}
main>section{
  position:relative;
  height:var(--story-height)!important;
  min-height:var(--story-height)!important;
  max-height:var(--story-height);
  overflow:hidden;
  isolation:isolate;
  scroll-snap-align:start;
  scroll-snap-stop:always;
}

.site-header{
  height:calc(var(--header-h) + var(--mobile-safe-top));
  padding:var(--mobile-safe-top) var(--mobile-gutter) 0;
  transition:opacity .25s ease;
}
.wordmark{font-size:12px;letter-spacing:.1em;gap:8px}
.wordmark span:last-child{display:none}
.header-actions{gap:8px}
.header-contact{display:none}
.sound-toggle{min-height:44px;gap:6px;padding:8px 0;font-size:8px;letter-spacing:.12em}
.sound-bars{width:12px;height:10px;gap:2px}
.sound-bars i{width:1px}
.lang-toggle{min-width:88px;min-height:44px;justify-content:flex-end;padding:8px 0;font-size:9px}
.lang-toggle i{width:16px}

.mobile-story-progress{
  position:fixed;
  z-index:120;
  top:50%;
  right:max(9px,env(safe-area-inset-right,0px));
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:8px;
  color:#fff;
  mix-blend-mode:difference;
  pointer-events:none;
  transform:translateY(-50%);
  transition:opacity .25s ease;
}
.mobile-story-current,.mobile-story-total{font-size:8px;line-height:1;letter-spacing:.08em}
.mobile-story-total{opacity:.46}
.mobile-story-rail{position:relative;width:1px;height:72px;background:rgba(255,255,255,.3);overflow:hidden}
.mobile-story-rail i{position:absolute;inset:0;background:#fff;transform:scaleY(var(--mobile-story-progress));transform-origin:top;transition:transform .45s cubic-bezier(.22,.72,.17,1)}
.mobile-story-name{max-height:112px;overflow:hidden;font-size:7px;line-height:1;letter-spacing:.16em;text-transform:uppercase;white-space:nowrap;writing-mode:vertical-rl}
html.theater-open .site-header,html.theater-open .mobile-story-progress{opacity:0;pointer-events:none}
html[data-mobile-story-page="proof"] .mobile-story-progress,
html[data-mobile-story-page="offering"] .mobile-story-progress{opacity:0}

.shell{width:calc(100% - (var(--mobile-gutter) * 2))}
.full-bleed{background-position:center}
.display,.manifesto-line,.manifesto-final,.manifesto-paragraph,.case-title,.film-title,.method-title,.proof-title,.offering-title,.why-title,.about-title,.contact-title{font-family:var(--serif);font-weight:400;font-kerning:normal;letter-spacing:-.045em;text-wrap:balance}
.hero-deck,.film-description,.method-deck,.proof-note,.why-body,.why-signoff,.contact-deck{font-family:var(--serif);font-size:var(--mobile-body-size);line-height:var(--mobile-body-leading)}
.section-index,.eyebrow,.case-meta,.film-category,.mobile-swipe-hint,.mobile-story-progress,.contact-links{font-family:var(--sans);font-size:8px;font-weight:500;letter-spacing:.22em;text-transform:uppercase}
.section-index::after{content:"";display:inline-block;width:26px;height:1px;margin-left:10px;background:currentColor;vertical-align:middle;opacity:.42}

/* Opening: one decisive frame, not a compressed desktop hero. */
.hero{background-image:var(--bg-mobile,var(--bg));background-position:center 48%}
.hero::after{box-shadow:inset 0 0 100px rgba(0,0,0,.2)}
.hero-shade{background:linear-gradient(0deg,rgba(4,6,4,.92) 0%,rgba(4,6,4,.54) 38%,rgba(4,6,4,.06) 74%),linear-gradient(90deg,rgba(4,6,4,.28),transparent 68%)}
.hero-content{height:100%;min-height:0;justify-content:flex-end;align-items:flex-start;padding:calc(var(--header-h) + var(--mobile-safe-top)) 0 calc(54px + var(--mobile-safe-bottom))}
.hero .eyebrow{margin:0 0 16px;color:rgba(255,255,255,.7)}
.display{max-width:350px;font-size:var(--mobile-hero-size);line-height:.9;letter-spacing:-.052em}
.hero-deck{max-width:310px;margin:22px 0 0;color:rgba(255,255,255,.76)}
.enter-link{min-height:44px;margin-top:28px;gap:14px;font-size:9px}
.enter-line{width:46px}
.enter-link::after{content:"↑";display:inline-block;color:var(--gold);animation:mobile-cue 1.8s ease-in-out infinite}
.hero-index{display:none}

/* The idea unfolds as three separate cinematic pages. */
.manifesto{display:flex;align-items:flex-end;min-height:100svh;background-image:var(--bg-mobile,var(--bg));background-position:center}
.manifesto-one{background-position:52% center}
.manifesto-two{background-position:42% center}
.manifesto-three{background-position:38% center}
.manifesto-overlay{background:linear-gradient(0deg,rgba(5,7,5,.88),rgba(5,7,5,.12) 70%)}
.manifesto-overlay.darker{background:linear-gradient(0deg,rgba(5,7,5,.9),rgba(5,7,5,.12) 72%)}
.manifesto-overlay.soft{background:linear-gradient(0deg,rgba(5,7,5,.82),rgba(5,7,5,.08) 70%)}
.manifesto-copy,.manifesto-copy.align-right,.center-copy{display:block;width:calc(100% - (var(--mobile-gutter) * 2));padding:calc(var(--header-h) + var(--mobile-safe-top)) 0 calc(54px + var(--mobile-safe-bottom));text-align:left}
.manifesto-copy .section-index{margin:0 0 18px}
.manifesto-line,.manifesto-final,.manifesto-paragraph{max-width:350px;font-size:var(--mobile-title-size);line-height:var(--mobile-title-leading)}

/* Case study: title and all three films resolve inside a single screen. */
.case-intro{padding:0}
.case-grid{
  height:100%;
  width:calc(100% - (var(--mobile-gutter) * 2));
  display:grid;
  grid-template-columns:1fr;
  grid-template-rows:auto minmax(0,1fr);
  gap:18px;
  align-items:stretch;
  padding:calc(var(--header-h) + var(--mobile-safe-top) + 20px) 0 calc(20px + var(--mobile-safe-bottom));
}
.case-grid>div:first-child{align-self:start}
.case-intro .section-index{margin:0 0 10px}
.case-title{font-size:var(--mobile-title-size);line-height:var(--mobile-title-leading)}
.case-subtitle{margin:14px 0 7px;font-family:var(--serif);font-size:var(--mobile-body-size);line-height:1.12}
.case-meta{margin:0;font-size:8px;line-height:1.3}
.case-strip{min-height:0;height:100%;display:grid;grid-template-columns:1fr 1fr;grid-template-rows:minmax(0,1fr) minmax(0,.52fr);gap:7px;align-items:stretch}
.case-frame,.case-frame:nth-child(2),.case-frame:nth-child(3){min-height:0;height:auto;margin:0;aspect-ratio:auto;transform:none}
.case-frame:nth-child(3){grid-column:1/-1}
.case-frame img{width:100%;height:100%;object-fit:cover}

/* Each film is a self-contained full-screen poster chapter. */
.film,.light-film{display:block;min-height:100svh;background:#050604;color:#fff}
.film-visual{
  position:absolute;
  z-index:0;
  inset:0;
  width:100%;
  height:100%;
  min-height:0;
  background-image:var(--bg-mobile,var(--bg));
  background-position:center;
  transform:scale(1.035);
  transition:transform 1.4s cubic-bezier(.22,.72,.17,1);
}
.film-one .film-visual{background-position:center}
.film-two .film-visual{background-position:center}
.film-three .film-visual{background-position:center}
.film.is-mobile-current .film-visual{transform:scale(1)}
.film::after{content:"";position:absolute;z-index:1;inset:0;pointer-events:none;background:radial-gradient(rgba(255,255,255,.18) .45px,transparent .6px);background-size:4px 4px;mix-blend-mode:soft-light;opacity:.16}
.film-copy{
  position:relative;
  z-index:2;
  width:100%;
  height:100%;
  min-height:0;
  display:flex;
  flex-direction:column;
  justify-content:flex-end;
  padding:calc(var(--header-h) + var(--mobile-safe-top) + 12px) calc(var(--mobile-gutter) + 2px) calc(46px + var(--mobile-safe-bottom));
  background:linear-gradient(0deg,rgba(3,4,3,.94) 0%,rgba(3,4,3,.64) 36%,rgba(3,4,3,.08) 72%),linear-gradient(90deg,rgba(3,4,3,.28),transparent 72%);
}
.film-copy .section-index,.film-copy .section-index.dark{margin:0 0 12px;color:rgba(255,255,255,.68)}
.film-category,.film-category.dark{margin:0 0 12px;color:#d0b47c;font-size:9px}
.film-title,.film-title.dark{font-size:var(--mobile-title-size);line-height:var(--mobile-title-leading);color:#fff;text-shadow:0 2px 20px rgba(0,0,0,.22)}
.film-cn,.film-cn.dark{margin:13px 0 0;color:rgba(255,255,255,.7);font-family:var(--serif);font-size:17px;letter-spacing:.03em}
.film-description,.film-description.dark{max-width:330px;margin:20px 0;color:rgba(255,255,255,.76)}
.play-film,.play-film.dark-button{
  min-height:48px;
  display:inline-flex;
  gap:12px;
  padding:6px 17px 6px 7px;
  border:1px solid rgba(255,255,255,.48);
  border-radius:999px;
  color:#fff;
  background:rgba(6,8,6,.2);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.play-icon{width:34px;height:34px;flex:0 0 auto}
.play-icon::after{left:13px;top:10px;border-left-width:8px;border-top-width:6px;border-bottom-width:6px}

/* Dense sections become horizontal stories inside one vertical page. */
.method{padding:0;display:flex;flex-direction:column}
.method-head{flex:0 0 auto;width:calc(100% - (var(--mobile-gutter) * 2));padding:calc(var(--header-h) + var(--mobile-safe-top) + 18px) 0 16px}
.method-head .section-index{margin:0 0 12px}
.method-title{font-size:var(--mobile-title-size);line-height:var(--mobile-title-leading)}
.method-deck{max-width:330px;margin:14px 0 0}
.mobile-swipe-hint{display:block;margin:14px 0 0;color:rgba(255,255,255,.52);font-size:8px;letter-spacing:.18em;text-transform:uppercase}
.method-panels{
  flex:1 1 auto;
  min-height:0;
  display:flex;
  grid-template-columns:none;
  gap:10px;
  padding:0 var(--mobile-gutter) calc(18px + var(--mobile-safe-bottom));
  overflow-x:auto;
  overflow-y:hidden;
  scroll-snap-type:x mandatory;
  overscroll-behavior-x:contain;
  scrollbar-width:none;
  -webkit-overflow-scrolling:touch;
}
.method-panels::-webkit-scrollbar{display:none}
.method-panel{
  flex:0 0 84vw;
  width:84vw;
  min-height:0;
  height:100%;
  border:1px solid rgba(255,255,255,.14);
  border-radius:2px;
  scroll-snap-align:center;
  scroll-snap-stop:always;
}
.method-panel::before{background-image:var(--bg-mobile,var(--bg));background-position:center}
.method-panel-copy{padding:28px 24px 30px}
.method-panel-copy>span{font-size:19px}
.method-panel-copy h3{margin:12px 0 9px;font-family:var(--serif);font-size:28px;font-weight:400;line-height:.96;letter-spacing:-.03em}
.method-panel-copy p{font-family:var(--serif);font-size:16px;line-height:1.38}

.proof{padding:0}
.proof>.shell{
  height:100%;
  display:flex;
  flex-direction:column;
  padding:calc(var(--header-h) + var(--mobile-safe-top) + 18px) 0 calc(18px + var(--mobile-safe-bottom));
}
.proof .section-index{margin:0 0 10px}
.proof-heading-row{display:block;flex:0 0 auto}
.proof-title{max-width:330px;font-size:clamp(40px,11vw,46px);line-height:.9}
.proof-note{max-width:315px;margin:12px 0 0;font-size:15px;line-height:1.35}
.metrics{flex:1 1 auto;min-height:330px;max-height:420px;display:grid;grid-template-columns:1fr 1fr;margin:26px 0 18px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);gap:0;background:transparent}
.metric,.metric:nth-child(2),.metric:nth-child(-n+2),.metric:last-child{min-width:0;min-height:0;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;padding:18px 16px;border:0!important;background:transparent}
.metric:nth-child(odd){border-right:1px solid var(--line)!important}
.metric:nth-child(-n+2){border-bottom:1px solid var(--line)!important}
.metric-icon{width:27px;height:27px;margin:0 0 15px;color:#8e784d}
.metric strong{margin:0;font-size:clamp(52px,14vw,60px);line-height:.82;letter-spacing:-.055em}
.metric>span:last-child{margin-top:11px;font-size:10px;font-weight:500;line-height:1.15;letter-spacing:.14em;color:rgba(11,12,9,.58)}
.proof-source{flex:0 0 auto;display:block;margin:0;padding:13px 0 2px;border-top:1px solid var(--line)}
.proof-platforms{gap:0}
.proof-platforms>span{padding:0;border:0;border-radius:0;font-size:9px;letter-spacing:.1em}
.proof-platforms>span:not(:last-child)::after{content:"/";margin:0 8px;color:rgba(11,12,9,.28)}
.proof-snapshot{margin-top:9px;font-size:9px;line-height:1.3;letter-spacing:.09em;text-align:left}

.offering{padding:0}
.offering>.shell{height:100%;display:flex;flex-direction:column;padding:calc(var(--header-h) + var(--mobile-safe-top) + 18px) 0 calc(18px + var(--mobile-safe-bottom))}
.offering .section-index{margin:0 0 10px}
.offering-title{flex:0 0 auto;max-width:354px;font-size:clamp(35px,9.7vw,39px);line-height:.9}
.offering .mobile-swipe-hint{display:none}
.offering-grid{
  flex:1 1 auto;
  min-height:0;
  display:grid;
  grid-template-columns:1fr;
  grid-template-rows:repeat(4,minmax(0,1fr));
  gap:0;
  margin:24px 0 0;
  border-top:1px solid rgba(255,255,255,.18);
  overflow:hidden;
}
.offering-item,.offering-item:nth-child(odd),.offering-item:nth-child(even){
  width:auto;
  height:auto;
  position:relative;
  display:grid;
  grid-template-columns:34px minmax(0,1fr);
  grid-template-rows:auto auto;
  align-content:center;
  column-gap:12px;
  padding:13px 4px 14px 0;
  border:0;
  border-bottom:1px solid rgba(255,255,255,.18);
  background:transparent;
}
.offering-item>span:first-child{position:static;grid-column:1;grid-row:1/3;align-self:start;margin-top:3px;font-family:var(--sans);font-size:10px;font-weight:500;line-height:1;letter-spacing:.16em;color:#d0b47c}
.offering-item h3,.offering-item p{grid-column:2}
.offering-item h3{margin:0 0 6px;font-family:var(--serif);font-size:20px;font-weight:400;line-height:1;letter-spacing:-.025em}
.offering-item p{margin:0;max-width:315px;font-family:var(--serif);font-size:13px;line-height:1.3}
.offering-item p .copy{position:static;grid-row:auto;font-family:inherit;font-size:inherit;color:inherit}

.why-golf{display:block;min-height:100svh;background-image:var(--bg-mobile,var(--bg));background-position:55% center}
.why-content{height:100%;display:flex;flex-direction:column;justify-content:flex-end;padding:calc(var(--header-h) + var(--mobile-safe-top)) 0 calc(52px + var(--mobile-safe-bottom))}
.why-content .section-index{margin:0 0 14px}
.why-title{max-width:350px;font-size:var(--mobile-title-size);line-height:var(--mobile-title-leading)}
.why-body{max-width:330px;margin:24px 0 0}
.why-signoff{max-width:330px;margin:26px 0 0;font-size:22px;line-height:1.2}

.about{display:grid;grid-template-columns:1fr;grid-template-rows:36% 64%;min-height:100svh}
.about-visual{min-height:0;height:100%;background-image:var(--bg-mobile,var(--bg));background-position:center 42%}
.about-copy{min-height:0;height:100%;justify-content:flex-start;padding:22px var(--mobile-gutter) calc(20px + var(--mobile-safe-bottom))}
.about-copy .section-index{margin:0 0 10px}
.about-title{font-size:var(--mobile-long-title-size);line-height:.94}
.about-facts{margin-top:18px}
.about-facts p{padding:9px 0;font-size:10px;line-height:1.3}

.contact{display:flex;align-items:flex-end;min-height:100svh;background-image:var(--bg-mobile,var(--bg));background-position:58% center}
.contact-content{height:100%;display:flex;flex-direction:column;justify-content:flex-end;padding:calc(var(--header-h) + var(--mobile-safe-top)) 0 calc(44px + var(--mobile-safe-bottom))}
.contact-content .section-index{margin:0 0 14px}
.contact-title{max-width:350px;font-size:var(--mobile-title-size);line-height:var(--mobile-title-leading)}
.contact-deck{max-width:330px;margin:24px 0 0}
.contact-links{display:grid;grid-template-columns:1fr 1fr;gap:12px 14px;margin-top:28px;font-size:8px;line-height:1.35}
.contact-links a{grid-column:1/-1;min-height:32px;display:flex;align-items:center;width:max-content}

/* Keep the film horizontal in portrait; the user controls device rotation. */
.theater{width:100%;height:100vh;height:100dvh;padding:0 12px;display:none;align-items:center;justify-content:center;background:#000}
.theater.is-open{display:flex}
.theater-inner{position:relative;z-index:1;width:100%;max-width:720px;height:auto;display:flex;align-items:center;justify-content:center;transform:none}
.theater-title{display:none}
.theater-video{display:block;width:100%;height:auto;max-height:calc(100dvh - 112px);aspect-ratio:16/9;object-fit:contain;border-radius:0;background:#000;box-shadow:none}
.theater-close{z-index:4;right:max(8px,env(safe-area-inset-right,0px));top:calc(var(--mobile-safe-top) + 7px);width:48px;height:48px;padding:0;font-size:38px}
.theater-rotate-hint{position:fixed;z-index:3;left:50%;bottom:calc(var(--mobile-safe-bottom) + 18px);display:flex;align-items:center;gap:10px;color:rgba(255,255,255,.72);font-size:8px;letter-spacing:.16em;text-transform:uppercase;white-space:nowrap;transform:translateX(-50%);transition:opacity .35s ease}
.theater-rotate-hint i{display:block;width:14px;height:22px;border:1px solid currentColor;border-radius:3px;transform:rotate(90deg)}
.theater.is-playing .theater-rotate-hint{opacity:.56}

@media (orientation:landscape){
  .theater{padding:0}
  .theater-inner{position:fixed;inset:0;width:100vw;max-width:none;height:100vh;height:100dvh}
  .theater-video{width:100%;height:100%;max-height:none;aspect-ratio:auto;object-fit:contain}
  .theater-rotate-hint{display:none}
}

@keyframes mobile-cue{0%,100%{transform:translateY(2px);opacity:.55}50%{transform:translateY(-5px);opacity:1}}

@media (max-height:720px){
  :root{--mobile-hero-size:clamp(46px,14vw,56px);--mobile-title-size:clamp(40px,11vw,46px);--mobile-long-title-size:29px;--mobile-body-size:15px}
  .display{font-size:var(--mobile-hero-size)}
  .hero-deck{font-size:var(--mobile-body-size);margin-top:17px}
  .enter-link{margin-top:19px}
  .manifesto-line,.manifesto-final,.manifesto-paragraph{font-size:var(--mobile-title-size)}
  .case-grid{gap:12px;padding-top:calc(var(--header-h) + var(--mobile-safe-top) + 10px);padding-bottom:calc(12px + var(--mobile-safe-bottom))}
  .case-title{font-size:42px}.case-subtitle{font-size:17px;margin-top:10px}
  .film-copy{padding-bottom:calc(28px + var(--mobile-safe-bottom))}
  .film-title,.film-title.dark{font-size:var(--mobile-title-size)}
  .film-description,.film-description.dark{margin:14px 0;font-size:var(--mobile-body-size)}
  .method-head,.proof>.shell,.offering>.shell{padding-top:calc(var(--header-h) + var(--mobile-safe-top) + 8px)}
  .method-title{font-size:var(--mobile-title-size)}
  .proof-title{font-size:38px}
  .offering-title{font-size:34px}
  .method-deck{font-size:var(--mobile-body-size)}
  .proof-note{font-size:14px}
  .method-head{padding-bottom:10px}.mobile-swipe-hint{margin-top:9px}
  .metrics{min-height:250px;max-height:310px;margin:16px 0 12px}.metric{padding:12px 10px}.metric-icon{width:23px;height:23px;margin-bottom:10px}.metric strong{font-size:46px}.metric>span:last-child{margin-top:8px;font-size:9px}.proof-source{padding-top:9px}.proof-snapshot{margin-top:6px;font-size:8px}
  .offering-grid{margin-top:16px}.offering-item,.offering-item:nth-child(odd),.offering-item:nth-child(even){padding:8px 2px 9px 0}.offering-item h3{font-size:17px;margin-bottom:4px}.offering-item p{font-size:12px;line-height:1.22}
  .about{grid-template-rows:31% 69%}.about-copy{padding-top:15px}.about-title{font-size:var(--mobile-long-title-size)}.about-facts{margin-top:10px}.about-facts p{padding:6px 0}
  .why-title{font-size:var(--mobile-title-size)}.why-body{margin-top:16px;font-size:var(--mobile-body-size)}.why-signoff{margin-top:17px;font-size:19px}
  .contact-title{font-size:var(--mobile-title-size)}.contact-deck{font-size:var(--mobile-body-size);margin-top:16px}.contact-links{margin-top:18px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .mobile-story-rail i,.film-visual{transition:none}
  .film-visual,.film.is-mobile-current .film-visual{transform:none}
  .enter-link::after{animation:none}
  .sound-toggle[data-playing="true"] .sound-bars i{animation:none;height:7px}
}