@font-face{font-family:Sans;src:url(assets/fonts/SourceSans3-latin.woff2)}
@font-face{font-family:Chinese;src:url(assets/fonts/NotoSansSC-VF.woff2)}
@font-face{font-family:Editorial;src:url(assets/fonts/Newsreader-latin.woff2)}
@font-face{font-family:Song;src:url(assets/fonts/NotoSerifSC-VF.woff2)}

:root{--ink:#182018;--green:#36552b;--muted:#646b61;--paper:#f1f2e9}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:100px}
body{margin:0;color:var(--ink);background:#fff;font-family:Sans,Chinese,sans-serif}
button,a{-webkit-tap-highlight-color:transparent}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0}
button:focus-visible,a:focus-visible{outline:3px solid #88a640;outline-offset:5px}
img,video{max-width:100%;height:auto;display:block}
svg{display:block}
h1,h2,p,figure{margin:0}
h1,h2{font-family:Editorial,Song,serif;font-weight:550;letter-spacing:-.055em;line-height:1.3}
h1{font-size:clamp(58px,7.8vw,110px)}
h2{font-size:clamp(36px,4.3vw,60px)}
p{line-height:1.9}
button,a{transition:background .2s,color .2s,transform .3s}
.site-header{width:min(1080px,88%);height:92px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:650;font-size:20px}
.brand svg{width:32px}
.main-nav{display:flex;gap:30px;font-size:14px}
.main-nav a:hover{color:#759438}
.nav-cta,.button{border-radius:99px;background:#1b211b;color:white;padding:13px 25px}
.button{display:inline-flex;align-items:center;justify-content:center;gap:12px;font-weight:600}
.button:hover,.nav-cta:hover{background:#36552b;transform:translateY(-3px)}
.button svg{width:20px;fill:currentColor}
.download-cta{min-height:64px;min-width:250px;font-size:18px}
.section{width:min(1080px,88%);margin:0 auto;padding:110px 0}
.hero{text-align:center;width:min(1440px,96%);padding-top:70px}
.product-label{font-size:13px;color:var(--green);margin-bottom:24px}
.hero-lead{font-size:18px;color:var(--muted);margin:26px 0 30px}
.download-row{display:block;text-align:center}
.download-status{font-size:12px;color:#6c7169;margin-top:12px}
.secondary-actions{display:flex;justify-content:center;gap:30px;margin:22px 0 60px;font-size:14px}
.secondary-actions a:hover,.local-link:hover{color:#71963c}
.hero-stage{position:relative;padding:70px 5% 28px;background:#eff1e7;border-radius:26px;overflow:hidden}
.stage-word{display:block;font:italic clamp(42px,6vw,88px) Editorial,serif;letter-spacing:-.04em;color:#9ca88d;margin-bottom:24px}
.hero-stage video{width:min(960px,100%);margin:auto;border-radius:12px;box-shadow:0 28px 60px #25341d20}
.video-chapters,.evidence-tabs{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:26px}
.video-chapters button,.evidence-tabs button{padding:12px 22px;border-radius:99px;background:#fff;color:#54604d}
.video-chapters button[aria-current=true],.evidence-tabs button[aria-pressed=true]{background:#36552b;color:#fff}
.feature{display:grid;grid-template-columns:1.15fr 1fr;align-items:center;gap:80px}
.feature-copy p,.section-heading p{color:var(--muted);margin-top:24px;font-size:17px}
.paper-gallery{height:510px;position:relative;perspective:1000px}
.paper-gallery img{position:absolute;width:58%;top:45px;left:4%;box-shadow:0 20px 35px #23332120;transform:rotate(-12deg);transition:transform .7s cubic-bezier(.2,.7,.2,1)}
.paper-gallery img:nth-child(2){left:25%;top:0;transform:rotate(3deg)}
.paper-gallery img:nth-child(3){left:42%;top:65px;transform:rotate(15deg)}
.paper-gallery:hover img:first-child{transform:translate(-20px,-20px) rotate(-17deg)}
.paper-gallery:hover img:nth-child(2){transform:translateY(-28px) rotate(0)}
.paper-gallery:hover img:nth-child(3){transform:translate(24px,-8px) rotate(20deg)}
.film video{border-radius:14px;width:100%;background:#edf0e6}
.film figcaption{text-align:center;font-size:12px;color:#71766d;margin:16px 0}
.graph-section{width:min(1360px,94%)}
.section-heading{text-align:center;margin:0 auto 50px;max-width:720px}
.graph-section .film{max-width:1120px;margin:auto}
.project-section{width:min(1200px,90%)}
.project-section .film{max-width:960px;margin:45px auto 0}
.relationship{max-width:900px;margin:auto}
.relationship svg{width:100%;height:auto;fill:#36552b}
.relationship path{fill:none;stroke:#9cae82;stroke-width:3;stroke-dasharray:1000;stroke-dashoffset:0;transition:stroke-dashoffset 1s}
.relationship text{font:18px Sans,Chinese,sans-serif}
.relationship .evidence-tabs{justify-content:space-around;margin:0}
.relationship button{background:#edf1e6;min-width:180px}
.relationship p{text-align:center;margin-top:24px;color:#54604d}
.relationship.pulse path{stroke-dashoffset:1000}
.palette-art{max-width:380px;margin:auto;padding:26px;background:var(--paper);border-radius:130px 130px 16px 16px}
.palette-art img{border-radius:100px 100px 4px 4px;width:100%}
.swatches{display:flex;justify-content:center;gap:14px;margin:24px 0 12px}
.swatches button{width:42px;height:42px;border-radius:50%;background:var(--swatch);box-shadow:0 3px 8px #0001}
.swatches button:hover{transform:translateY(-6px) scale(1.12)}
#color-status{text-align:center;font-size:12px;color:#5c6657}
.local-section{padding:100px 6%;text-align:center;background:#eef0e5;position:relative;overflow:hidden}
.local-section:before,.hero-stage:before{content:"";position:absolute;inset:0;pointer-events:none;opacity:.12;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' opacity='.32' filter='url(%23n)'/%3E%3C/svg%3E")}
.local-symbol{width:120px;margin:0 auto 30px;fill:none;stroke:#36552b;stroke-width:3}
.local-symbol .leaf{fill:#cedba7;stroke-width:2}
.local-section>p{margin-top:24px}
.local-section .condition{font-size:12px;color:#59634f;max-width:540px;margin:26px auto 0}
.start-section{text-align:center;padding:130px 0}
.start-section .download-row{margin-top:36px}
.local-link{display:inline-block;margin-top:25px}
.site-footer{width:min(1080px,88%);margin:auto;padding:35px 0 55px;display:flex;justify-content:space-between;gap:24px;color:#626b5c;font-size:12px}
.site-footer .brand{font-size:16px}
.site-footer>div{display:flex;gap:22px}
.download-dialog{border:0;border-radius:24px;padding:48px;width:min(520px,90%);color:var(--ink);box-shadow:0 30px 100px #0003}
.download-dialog::backdrop{background:#18201870;backdrop-filter:blur(5px)}
.download-dialog h2{font-size:34px;margin:20px 0}
.download-dialog p{font-size:14px;color:#646b61}
.dialog-close{position:absolute;right:18px;top:18px;background:#eef0e9;border-radius:50%;padding:10px}
.dialog-close svg{width:18px;height:18px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.quiet{background:#edf0e7;color:#283820}
.skip{position:fixed;top:-100px}
.skip:focus{top:10px;left:10px;z-index:20;background:white;padding:15px}

@media(max-width:760px){.site-header{height:76px;width:90%}
.main-nav{gap:14px;font-size:12px}
.brand{font-size:16px}
.brand svg{width:26px}
.nav-cta{padding:10px 14px;font-size:12px}
.section{padding:70px 0}
.hero{padding-top:45px}
.hero-lead{font-size:15px}
.feature{grid-template-columns:1fr;gap:35px}
.feature-copy{text-align:center}
.paper-gallery{height:440px;width:min(450px,100%);margin:auto}
.hero-stage{padding:30px 12px 18px;border-radius:18px}
.secondary-actions{margin-bottom:36px}
.video-chapters button{padding:10px 14px;font-size:12px}
.relationship text{font-size:22px}
.relationship button{min-width:145px}
.section-heading{margin-bottom:32px}
.site-footer{flex-wrap:wrap}
.site-footer>div{gap:14px}
.local-section{padding:70px 6%}
.hero h1{font-size:68px}
}

@media(max-width:440px){.main-nav{display:none}
.paper-gallery{height:330px}
.hero h1{font-size:56px}
.relationship button{min-width:120px;padding:12px}
.hero-actions{flex-direction:column}
.download-dialog{padding:38px 25px}
}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}
*,*:before,*:after{animation:none!important;transition:none!important}
}


.hero{padding-top:38px}
.hero h1{font-size:clamp(56px,7vw,92px)}
.hero-lead{margin:20px 0 24px}
.secondary-actions{margin-bottom:35px}
.project-proof{max-width:920px;margin:45px auto 0}
.project-proof img{width:100%;margin-top:24px;border-radius:12px}
.project-proof p{text-align:center;font-size:13px;color:#59634f;margin-top:16px}
.paper-gallery.arrived img:first-child{transform:translate(-12px,-8px) rotate(-16deg)}
.paper-gallery.arrived img:nth-child(3){transform:translate(16px,-8px) rotate(19deg)}


.quiet:hover{color:white;background:#36552b}

.site-footer{--footer-bg:#191d18;--footer-text:#f3f4eb;--footer-soft:#b9c1b2;background:var(--footer-bg);color:var(--footer-text);width:100%;padding:76px 6% 32px;display:block;margin:0}
.footer-inner{max-width:1080px;margin:auto}.footer-motto{font:500 clamp(30px,4vw,44px)/1.5 Editorial,Song,serif;letter-spacing:-.025em;margin-bottom:48px;color:var(--footer-text)}
.footer-columns{display:grid;grid-template-columns:1fr 1fr 1.6fr;gap:50px}.footer-columns h3{font-size:14px;font-weight:600;margin:0 0 20px}.footer-columns nav{display:flex;flex-direction:column;align-items:flex-start;gap:10px}.footer-columns nav h3{margin-bottom:10px}.footer-columns a,.footer-follow p{font-size:13px;color:var(--footer-soft)}.site-footer a:hover{color:white}.social-links{display:flex;gap:18px;flex-wrap:wrap;margin-top:20px}.social-links button,.social-links a{background:transparent;color:var(--footer-text);padding:0;display:flex;align-items:center;gap:6px;font-size:12px;min-height:44px}.social-links button:hover,.social-links a:hover{transform:translateY(-3px);color:#d9e26b}.social-links svg{width:25px;height:25px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.social-links text{font:600 21px Chinese,sans-serif;fill:currentColor;stroke:none}.footer-follow .social-status{margin-top:12px;font-size:12px;min-height:24px}.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-top:70px;color:var(--footer-soft);font-size:12px}.footer-brand{font-size:17px;font-weight:600;color:var(--footer-text)}
@media(max-width:760px){.footer-columns{grid-template-columns:1fr 1fr;gap:35px}.footer-follow{grid-column:1/-1}.footer-bottom{flex-wrap:wrap;margin-top:45px;gap:14px}.site-footer{padding-top:55px}.footer-motto{margin-bottom:35px}}

.site-footer>.footer-inner{display:block}.footer-columns>*{min-width:0}.footer-columns p{overflow-wrap:anywhere}

.back-top{position:fixed;right:24px;bottom:24px;z-index:15;width:48px;height:48px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:#36552b;color:#fff;box-shadow:0 4px 18px #18201825}.back-top[hidden]{display:none}.back-top svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.back-top:hover{transform:translateY(-3px);background:#182018}body:has(.download-dialog[open]) .back-top{visibility:hidden}@media(max-width:440px){.back-top{right:16px;bottom:16px}}

.screenshot-crop{overflow:hidden;border-radius:12px;margin-top:24px}.project-proof .screenshot-crop img{width:101.65%;max-width:none;margin:0;border-radius:0}

.art-gallery img{width:72%;padding:10px;background:#f5f1e7;box-shadow:0 18px 35px #26331d25}.art-gallery img:first-child{top:0;left:0;transform:rotate(-12deg)}.art-gallery img:nth-child(2){width:56%;top:95px;left:30%;transform:rotate(5deg)}.art-gallery img:nth-child(3){width:68%;top:255px;left:7%;transform:rotate(-5deg)}@media(max-width:440px){.art-gallery{height:390px}.art-gallery img:nth-child(2){top:65px}.art-gallery img:nth-child(3){top:220px}}

.creator-contact-strip{grid-column:1/-1;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:16px;margin-top:20px}.creator-contact-strip figure{margin:0}.creator-contact-strip img{width:100%;height:170px;object-fit:cover;border-radius:8px}.creator-contact-strip figcaption{font-size:12px;text-align:center;color:var(--muted);margin-top:10px}@media(max-width:760px){.creator-contact-strip{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px 12px}.creator-contact-strip img{height:135px}}

/* Minimal media: the recording is the interface, controls stay secondary. */
.ambient-film,.project-still{position:relative;width:100%;overflow:hidden;border-radius:18px;background:var(--paper);margin:0 auto}
.ambient-film video,.project-still img{display:block;width:100%;height:auto;margin:0}
.ambient-toggle{position:absolute;right:16px;bottom:16px;width:36px;height:36px;padding:9px;border:0;border-radius:50%;background:#ffffffe8;color:var(--ink);opacity:0;transition:opacity .2s;cursor:pointer}
.ambient-film:hover .ambient-toggle,.ambient-film:focus-within .ambient-toggle{opacity:1}.ambient-toggle svg,.full-film-play svg{width:100%;height:100%;fill:none;stroke:currentColor;stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}
.full-film{position:relative}.full-film video{display:block;width:100%;height:auto}.full-film-play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:64px;height:64px;padding:20px;border:0;border-radius:50%;background:#182018a8;color:white;cursor:pointer}.full-film.is-playing .full-film-play{display:none}
#classification{grid-template-columns:1fr;gap:36px;max-width:1200px}#classification .feature-copy{text-align:center}
@media(hover:none){.ambient-toggle{opacity:.7;width:44px;height:44px}}
@media(prefers-reduced-motion:reduce){.ambient-toggle{transition:none;opacity:1}}

/* Persistent editorial navigation; dropdowns only group real destinations. */
.site-header{position:sticky;top:0;z-index:40;width:100%;height:84px;margin:0;padding-inline:max(24px,calc((100% - 1080px)/2));background:#fffffff5;backdrop-filter:blur(14px)}
.main-nav{display:flex;align-items:center;gap:14px;font-family:Editorial,Song,serif;font-size:18px;letter-spacing:.02em}
.main-nav>a,.nav-menu>summary{display:block;padding:10px 14px;border-radius:14px;white-space:nowrap;color:var(--ink);cursor:pointer;list-style:none}
.nav-menu>summary::-webkit-details-marker{display:none}.main-nav>a:hover,.nav-menu>summary:hover,.nav-menu[open]>summary{background:#f0f1ed;color:var(--ink)}
.nav-menu{position:relative}.nav-dropdown{position:absolute;top:calc(100% + 10px);right:0;width:290px;padding:8px;background:white;border-radius:16px;box-shadow:0 14px 50px #18201818;letter-spacing:0}
.nav-dropdown:before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}
.nav-dropdown a{display:flex;align-items:center;gap:10px;padding:10px;border-radius:10px;color:var(--ink);font-size:16px}.nav-dropdown a:hover{background:#f5f6f2}.nav-dropdown svg{flex:0 0 34px;width:34px;height:34px;padding:7px;border-radius:9px;background:#f5f6f2;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.nav-dropdown small{display:block;margin-top:4px;color:var(--muted);font:12px/1.5 Sans,Chinese,sans-serif}
@media(max-width:360px){.site-header .main-nav>a,.site-header .nav-menu>summary{padding-inline:8px;min-width:44px}}
@media(max-width:760px){.site-header{padding-inline:20px;gap:12px}.main-nav{gap:0;font-size:16px}.main-nav>a,.nav-menu>summary{padding:10px}.nav-dropdown{width:290px}}
@media(max-width:600px){html{scroll-padding-top:138px}.site-header{height:122px;display:grid;grid-template-columns:1fr auto;grid-template-rows:58px 56px;gap:0;padding-inline:18px}.main-nav{display:flex;grid-row:2;grid-column:1/-1;justify-content:space-between;width:100%;font-size:17px}.main-nav>a,.nav-menu>summary{padding:10px 12px}.site-header .nav-cta{grid-column:2;grid-row:1}.nav-dropdown{position:fixed;top:118px;left:12px;right:12px;width:auto;max-height:calc(100dvh - 140px);overflow:auto}.nav-dropdown a{min-height:64px}.nav-menu{position:static}}

.wechat-contact{position:relative;display:inline-flex}
.wechat-preview{position:absolute;z-index:20;right:0;bottom:100%;width:min(15rem,calc(100vw - 2rem));padding:1rem;background:#fff;color:var(--ink);border-radius:1rem;box-shadow:0 8px 32px #0004;text-align:center;font-size:13px;visibility:hidden;opacity:0}
.wechat-preview img{display:block;width:100%;height:auto;margin-bottom:.5rem}
.wechat-contact:hover .wechat-preview,.wechat-contact:focus-within .wechat-preview{visibility:visible;opacity:1}
body:has(.wechat-dialog[open]) .wechat-preview{visibility:hidden;opacity:0}
.wechat-dialog{width:min(26rem,calc(100% - 2rem));max-height:calc(100dvh - 2rem);overflow:auto;padding:2rem 1.5rem 1.5rem;border:0;border-radius:1.25rem;color:var(--ink);text-align:center}
.wechat-dialog::backdrop{background:#18201899}
.wechat-dialog h2{font-size:1.8rem;letter-spacing:0}
.wechat-dialog img{width:100%;height:auto;margin:.75rem auto}
.wechat-dialog p{font-size:.85rem;color:var(--muted);margin:.75rem 0}
.wechat-dialog .button{font-size:.9rem;min-height:44px}
.wechat-close{position:absolute;right:.4rem;top:.4rem;width:44px;height:44px;background:transparent;color:var(--ink);font-size:1.8rem}
body:has(.wechat-dialog[open]){overflow:hidden}

/* Keep the navigation centered independently of the brand width. */
@media(min-width:761px){.site-header{display:grid;grid-template-columns:1fr auto 1fr;gap:1rem}.site-header .brand{justify-self:start}.site-header .main-nav{grid-column:2;margin:0;justify-self:center;font-size:15px;gap:12px}.main-nav>a,.nav-menu>summary{padding:10px 12px}}
@media(min-width:901px){.graph-section{display:grid;grid-template-columns:minmax(16rem,.8fr) minmax(0,1.5fr);align-items:center;gap:clamp(2rem,5vw,5rem);width:min(1240px,90%)}.graph-section .section-heading{text-align:left;margin:0;max-width:none}.graph-section h2{font-size:clamp(2.1rem,3.3vw,3.4rem)}.graph-section .film{width:100%;min-width:0;margin:0}}
@media(max-width:760px){.site-header .main-nav{font-size:15px;justify-content:center;gap:clamp(0px,2vw,12px)}.main-nav>a,.nav-menu>summary{padding-inline:10px}}

.social-platform-logo{width:25px;height:25px;object-fit:contain;flex-shrink:0}

/* Quiet monochrome social row, with full keyboard/touch targets. */
.social-links{gap:4px;align-items:center;flex-wrap:nowrap}
.social-links a,.social-links button{width:44px;height:44px;min-width:44px;justify-content:center;color:var(--footer-text)}
.social-links svg{width:22px;height:22px}
.social-links .social-platform-logo{width:32px;height:32px;filter:grayscale(1) contrast(10);mix-blend-mode:screen}
.social-links a:hover,.social-links button:hover{color:var(--footer-text);opacity:.7;transform:translateY(-2px)}

.social-links{gap:6px 16px;flex-wrap:wrap}.social-links a,.social-links button{width:auto;gap:6px;justify-content:flex-start}.social-links span{font-size:12px;white-space:nowrap}