:root{--green:#287f70;--green-dark:#1d6256;--ink:rgb(0 0 0/.88);--secondary:rgb(0 0 0/.75);--tertiary:rgb(0 0 0/.6);--quiet:rgb(0 0 0/.46);--line:rgb(0 0 0/.09);font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:#f7faf8;font-size:16px;font-synthesis:none}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:28px}body{margin:0;min-width:320px}a{color:inherit;text-decoration:none}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default}img{display:block;max-width:100%}button{color:inherit}svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex:none}a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--green);outline-offset:4px}[hidden]{display:none!important}.wrap{width:min(1240px,calc(100% - 80px));margin-inline:auto}.skip{position:fixed;left:16px;top:-100px;z-index:30;background:white;padding:16px}.skip:focus{top:16px}.header{display:flex;align-items:center;justify-content:space-between;gap:24px;height:92px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;white-space:nowrap}.brand strong{font-size:22px;letter-spacing:-.04em;font-weight:700}.brand>span{font-size:13px;color:var(--tertiary);border-left:1px solid var(--line);margin-left:6px;padding-left:16px}.header nav{display:flex;align-items:center;gap:28px;font-size:14px;color:var(--tertiary)}.header nav a:hover{color:var(--green)}.header nav .nav-try{border:1px solid rgb(40 127 112/.25);border-radius:99px;padding:11px 20px;color:var(--green)}.hero{overflow:hidden}.hero-copy{position:relative;text-align:center;padding-top:66px;z-index:2}.eyebrow{font-size:14px;line-height:1.6;font-weight:500;color:var(--green);margin:0 0 18px;letter-spacing:.04em}.hero .eyebrow{display:flex;align-items:center;justify-content:center;gap:8px}.live-dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 5px rgb(40 127 112/.08)}h1{font-size:clamp(40px,5.2vw,72px);letter-spacing:-.055em;line-height:1.2;font-weight:750;margin:0}h1 span{color:var(--green)}.lead{font-size:18px;color:var(--tertiary);line-height:1.7;margin:22px 0 26px}.hero-actions{display:flex;align-items:center;justify-content:center;gap:28px}.primary{display:inline-flex;align-items:center;justify-content:center;gap:20px;padding:0 25px;min-height:52px;border:0;border-radius:99px;background:var(--green);color:white;font-size:16px;font-weight:600;transition:background .18s,transform .18s}.primary:hover{background:var(--green-dark);transform:translateY(-2px)}.explore-link{display:flex;align-items:center;gap:14px;font-size:15px;color:var(--secondary)}.hero-note{font-size:12px;color:var(--quiet);margin:16px 0 0}.universe{position:relative;isolation:isolate;height:570px;max-width:1920px;margin:12px auto 0;overflow:hidden}.wall{position:absolute;width:1800px;left:50%;top:48px;margin-left:-900px;transform:rotate(-7deg);mask-image:linear-gradient(to bottom,transparent,#000 10%,#000 82%,transparent)}.wall-row{display:flex;width:max-content;gap:12px;margin-bottom:12px;animation:drift 95s linear infinite;will-change:transform}.wall-row:nth-child(even){animation-direction:reverse;animation-duration:110s}.wall-tile{width:125px;height:104px;border-radius:12px;overflow:hidden;flex:none;background:#fff;box-shadow:0 2px 8px rgb(18 58 44/.03);border:1px solid rgb(0 0 0/.035)}.wall-tile img{width:100%;height:100%;object-fit:cover}.universe:before{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;background:linear-gradient(90deg,#f7faf8,transparent 14%,transparent 86%,#f7faf8)}.universe:hover .wall-row,.universe:focus-within .wall-row,.paused .wall-row,.offscreen .wall-row{animation-play-state:paused}.wall-toolbar{position:absolute;bottom:16px;left:50%;transform:translateX(-50%);width:min(1240px,calc(100% - 80px));display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--quiet);z-index:3}.wall-toolbar button{font-size:12px;padding:9px 12px;background:#fff;border:1px solid var(--line);border-radius:99px;color:var(--tertiary)}@keyframes drift{to{transform:translateX(-50%)}}.catalog-section{padding-top:84px;padding-bottom:32px}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:20px}.section-heading .eyebrow{margin-bottom:12px}h2{font-size:clamp(27px,3vw,38px);line-height:1.3;letter-spacing:-.045em;font-weight:650;margin:0}.section-intro{color:var(--tertiary);line-height:1.7;margin:14px 0 0}.catalog-total{display:flex;flex-direction:column;gap:3px;text-align:right;font-size:12px;color:var(--quiet);flex:none}.catalog-total strong{font-size:36px;color:var(--green);letter-spacing:-.04em;font-weight:500;font-variant-numeric:tabular-nums}.catalog-controls{margin-top:32px}.categories{display:flex;gap:8px;overflow:auto;padding:4px 2px 14px;scrollbar-width:thin}.categories button{flex:none;border:1px solid transparent;background:none;padding:9px 14px;border-radius:99px;color:var(--tertiary);font-size:14px;white-space:nowrap}.categories button:hover{background:#ebf1ed}.categories button[aria-pressed="true"]{color:#fff;background:var(--green)}.search{display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--line);padding:12px 0 18px;color:var(--quiet)}.search input{width:100%;border:0;outline:none;background:transparent;color:var(--ink);font-size:16px}.search input::placeholder{color:var(--quiet)}.results-line{display:flex;justify-content:space-between;gap:12px;align-items:center;color:var(--quiet);font-size:12px;margin:20px 0}.results-line p{margin:0}.catalog-grid{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));gap:12px}.tile{display:flex;min-width:0;flex-direction:column;align-items:flex-start;background:#fff;border:1px solid rgb(0 0 0/.04);border-radius:12px;padding:7px 7px 12px;content-visibility:auto;contain-intrinsic-size:auto 172px;transition:transform .2s,box-shadow .2s,border-color .2s;text-align:left}.tile:hover{transform:translateY(-5px);box-shadow:0 8px 24px rgb(24 62 44/.09);border-color:rgb(40 127 112/.25)}.tile img{width:100%;aspect-ratio:5/4;object-fit:cover;border-radius:7px;background:#fbfcfa}.tile strong{width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px;font-weight:550;margin:8px 3px 3px}.tile>span{font-size:11px;color:var(--quiet);margin:0 3px;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.load-area{text-align:center;min-height:95px;padding-top:28px}.more{background:transparent;border:1px solid var(--line);padding:12px 24px;border-radius:99px;color:var(--tertiary);font-size:14px}.load-area p{font-size:14px;color:var(--tertiary)}.learning{display:grid;grid-template-columns:.9fr 1.1fr;gap:70px;margin-top:76px;padding:64px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);align-items:center}.learning-copy>p:not(.eyebrow){font-size:16px;line-height:1.9;color:var(--tertiary);margin:22px 0 26px}.learning-demo{display:flex;align-items:center;gap:24px;background:#fff;border-radius:20px;padding:28px;border:1px solid var(--line)}.learning-demo>img{width:44%;height:auto;object-fit:contain}.learning-demo>div{min-width:0}.demo-label{font-size:10px;color:var(--green)}.learning-demo h3{font-size:28px;letter-spacing:-.03em;margin:14px 0}.learning-demo h3>span{font-size:14px;color:var(--quiet);font-weight:400}.learning-demo p{font-size:14px;line-height:1.65;color:var(--secondary);margin:8px 0}.learning-demo p.translation{font-size:12px;color:var(--quiet)}.demo-audio{display:inline-flex;align-items:center;gap:8px;font-size:12px;color:var(--green);margin-top:16px}.demo-audio svg{width:30px;height:30px;padding:7px;background:#eaf3ef;border-radius:50%;fill:var(--green);stroke:none}.creator{padding-block:80px}.creator h2{font-size:28px}.socials{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:30px}.socials a{display:flex;align-items:center;gap:12px;font-size:16px;border-bottom:1px solid var(--line);padding:18px 0}.socials img{border-radius:6px}.socials a>span{margin-left:auto;color:var(--quiet);font-size:12px}.footer{display:flex;align-items:center;gap:26px;border-top:1px solid var(--line);padding-block:26px;color:var(--quiet);font-size:12px}.footer .brand{color:var(--ink)}.footer .brand strong{font-size:18px}.footer small{margin-left:auto;font-size:11px}dialog{padding:32px;width:min(400px,calc(100% - 32px));border:1px solid var(--line);border-radius:20px;color:var(--ink);box-shadow:0 24px 100px #123b2d26}dialog::backdrop{background:rgb(20 35 29/.38)}body:has(dialog[open]){overflow:hidden}dialog>.eyebrow{display:block;margin-top:6px;font-size:12px}dialog>img{width:100%;height:auto;margin-block:12px}dialog h2{font-size:32px;overflow-wrap:anywhere}dialog>p{color:var(--tertiary);margin:6px 0 26px}dialog .primary{display:flex;font-size:14px}.dialog-close{position:absolute;right:12px;top:12px;width:36px;height:36px;display:grid;place-items:center;background:none;border:0;border-radius:50%;color:var(--tertiary)}.dialog-close:hover{background:#f0f4f1}.load-error{padding:28px;background:white;border-radius:12px;line-height:1.7}.load-error button{margin-top:12px}
@media(min-width:1600px){.hero-copy{padding-top:80px}.universe{height:620px}.wall{top:55px}.wall-tile{width:140px;height:112px}}
@media(max-width:1100px){.wrap{width:calc(100% - 48px)}.header .brand>span{display:none}.catalog-grid{grid-template-columns:repeat(6,minmax(0,1fr))}.categories{margin-right:-24px;padding-right:24px}.learning{gap:32px}.learning-demo{flex-direction:column;align-items:flex-start;gap:14px}.learning-demo>img{width:65%;margin:auto}.socials{gap:18px}.socials a>span{font-size:11px}.wall-toolbar{width:calc(100% - 48px)}}
@media(max-width:700px){.wrap{width:calc(100% - 40px)}.header{height:76px;gap:12px}.brand strong{font-size:20px}.brand{gap:7px}.brand>img{width:28px;height:28px}.header nav{gap:16px;font-size:13px}.header nav .nav-explore{display:none}.header nav .nav-try{padding:9px 13px}.hero-copy{padding-top:43px}.hero .eyebrow{font-size:12px;margin-bottom:18px}h1{font-size:42px;line-height:1.25;letter-spacing:-.055em}.lead{font-size:14px;line-height:1.8;max-width:300px;margin:18px auto 22px}.hero-actions{gap:14px;flex-direction:column}.primary{font-size:15px;min-height:52px;gap:20px}.explore-link{font-size:13px}.hero-note{font-size:10px;margin-top:14px}.universe{height:420px;margin-top:4px}.wall{width:1500px;margin-left:-750px;top:34px;transform:rotate(-9deg)}.wall-tile{width:93px;height:78px;border-radius:9px}.wall-row{gap:8px;margin-bottom:8px}.wall-toolbar{width:calc(100% - 40px);font-size:10px;bottom:12px}.wall-toolbar button{font-size:10px;padding:8px 10px}.catalog-section{padding-top:48px}.section-heading{align-items:flex-start}.section-heading .eyebrow{font-size:12px;margin-bottom:10px}.section-heading h2{font-size:28px;max-width:240px}.section-intro{font-size:14px;max-width:245px;line-height:1.8}.catalog-total{font-size:9px;margin-top:31px}.catalog-total strong{font-size:27px}.catalog-controls{margin-top:24px}.categories{margin-right:-20px;padding-right:20px}.categories button{font-size:13px;padding:8px 12px}.catalog-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.tile{padding:5px 5px 10px;border-radius:10px;contain-intrinsic-size:auto 137px}.tile strong{font-size:11px;margin-top:7px}.tile>span{font-size:10px}.results-line{font-size:10px}.search{padding-bottom:14px}.search input{font-size:16px}.learning{grid-template-columns:1fr;gap:30px;margin-top:35px;padding-block:40px}.learning-copy .eyebrow{font-size:12px;margin-bottom:12px}.learning-copy h2{font-size:32px}.learning-copy>p:not(.eyebrow){font-size:14px}.learning-demo{flex-direction:row;padding:20px;gap:16px}.learning-demo>img{width:38%}.learning-demo h3{font-size:25px}.learning-demo h3>span{display:block;font-size:12px;margin-top:4px}.learning-demo p{font-size:12px}.learning-demo p.translation{font-size:11px}.creator{padding-block:48px}.creator .eyebrow{font-size:12px}.creator h2{font-size:25px}.socials{grid-template-columns:1fr;gap:0;margin-top:16px}.socials a>span{font-size:12px}.footer{flex-wrap:wrap;gap:12px 20px;font-size:10px}.footer small{margin-left:0;width:100%}.footer .brand strong{font-size:16px}dialog{padding:26px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}.wall{transform:none}}
@media(max-width:700px){h1{font-size:clamp(30px,8.8vw,40px)}.lead{max-width:330px}}
/* Interactive atlas universe: isolated preview, transform-only movement. */
.universe{height:640px;margin-top:26px;perspective:1400px;background:radial-gradient(ellipse at 50% 60%,#dcefe53d,transparent 64%);touch-action:pan-y;cursor:grab}.universe:before{z-index:3;background:linear-gradient(90deg,#f7faf8 0%,transparent 12%,transparent 88%,#f7faf8 100%);pointer-events:none}.universe:after{content:"";position:absolute;inset:0;z-index:3;background:linear-gradient(#f7faf8 0%,transparent 18%,transparent 78%,#f7faf8 100%);pointer-events:none}.universe-halo{position:absolute;inset:0;background-image:radial-gradient(#287f701c .8px,transparent .8px);background-size:26px 26px;mask-image:radial-gradient(ellipse,#000,transparent 72%);pointer-events:none}.wall.orbit-world{position:absolute;left:50%;top:54%;margin:0;mask-image:none;transform-style:preserve-3d;transform:translate3d(-50%,-50%,0) rotateX(7deg) rotateY(-5deg) rotateZ(-6deg);will-change:transform}.orbit-card{position:absolute;left:0;top:0;width:137px;height:110px;border:0;background:none;padding:0;text-align:left;transform:translate3d(var(--x),var(--y),var(--z)) rotate(var(--r));transition:transform .75s cubic-bezier(.22,.7,.2,1),opacity .5s;transition-delay:var(--delay);cursor:pointer;opacity:0;user-select:none;-webkit-user-select:none}.orbit-world:not(.arrived) .orbit-card{transform:translate3d(620px,370px,-100px) scale(.25) rotate(0deg)}.orbit-world.arrived .orbit-card{opacity:1}.orbit-face{display:block;width:100%;height:100%;background:white;border-radius:13px;border:1px solid rgb(0 0 0/.035);box-shadow:0 6px 18px #183c2c09;transition:transform .22s,box-shadow .22s;position:relative;transform-style:preserve-3d}.orbit-face img{width:100%;height:100%;object-fit:cover;border-radius:12px;pointer-events:none}.orbit-card:hover,.orbit-card:focus-visible{z-index:4;outline:0}.orbit-card:hover .orbit-face,.orbit-card:focus-visible .orbit-face{transform:translateZ(65px) scale(1.2);box-shadow:0 18px 36px #173e2c24;border-color:#287f7060}.orbit-card:focus-visible .orbit-face{outline:2px solid var(--green);outline-offset:3px}.orbit-caption{position:absolute;bottom:-39px;left:0;right:0;display:block;padding:7px 8px;border-radius:0 0 10px 10px;background:white;opacity:0;transform:translateY(-6px);transition:transform .18s,opacity .18s;box-shadow:0 12px 16px #173e2c0c;pointer-events:none}.orbit-caption strong{font-size:11px;display:block;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.orbit-caption>span{font-size:10px;color:var(--tertiary);display:block;margin-top:2px}.orbit-card:hover .orbit-caption,.orbit-card:focus-visible .orbit-caption{opacity:1;transform:translateY(0)}.orbit-face.floating{animation:orbit-breathe 6s ease-in-out infinite alternate}.orbit-card:nth-child(odd) .floating{animation-delay:-3s}@keyframes orbit-breathe{to{transform:translate3d(0,-9px,12px)}}.orbit-card:hover .floating,.orbit-card:focus-visible .floating{animation:none}.paused .floating,.offscreen .floating,.background .floating,.dragging .floating{animation-play-state:paused}.universe.dragging{cursor:grabbing}.dragging .orbit-card{pointer-events:none}.universe-ui{position:absolute;z-index:5;cursor:auto}.universe-top{top:4px;left:50%;transform:translateX(-50%);width:min(1070px,calc(100% - 48px))}.universe-themes{display:flex;gap:7px;overflow:auto;scrollbar-width:none;padding:9px 4px;justify-content:flex-start;mask-image:linear-gradient(90deg,#000 95%,transparent)}.universe-themes::-webkit-scrollbar{display:none}.universe-themes button{background:rgb(255 255 255/.88);border:1px solid rgb(0 0 0/.07);border-radius:99px;flex:none;padding:8px 13px;font-size:12px;color:var(--tertiary);white-space:nowrap}.universe-themes button[aria-pressed="true"]{background:var(--green);border-color:var(--green);color:white}.universe-bottom{left:50%;transform:translateX(-50%);bottom:8px;width:min(1240px,calc(100% - 80px));display:flex;justify-content:space-between;align-items:center;gap:12px;color:var(--tertiary);font-size:12px}.universe-bottom>div{display:flex;align-items:center;gap:10px}.explore-dot{width:6px;height:6px;background:var(--green);border-radius:50%;box-shadow:0 0 0 5px #287f7009}.drag-hint{color:var(--quiet);border-left:1px solid var(--line);padding-left:10px;margin-left:4px}.universe-tools button{border:1px solid var(--line);background:#ffffffc9;padding:9px 14px;border-radius:99px;color:var(--tertiary);font-size:12px}.universe-tools button:hover{background:white;color:var(--green)}
@media(max-width:1100px){.universe-bottom{width:calc(100% - 48px)}.drag-hint{display:none}}
@media(max-width:700px){.universe{height:450px;margin-top:22px;perspective:none}.universe-top{width:calc(100% - 32px);top:0}.universe-themes{gap:6px}.universe-themes button{font-size:11px;padding:8px 12px}.wall.orbit-world{top:53%;transform-style:flat}.orbit-card{width:106px;height:86px;transition-duration:.5s}.orbit-face{border-radius:10px}.orbit-face img{border-radius:9px}.orbit-world:not(.arrived) .orbit-card{transform:translate3d(340px,250px,0) scale(.4)}.orbit-face.floating{animation:none}.orbit-card:hover .orbit-face,.orbit-card:focus-visible .orbit-face{transform:scale(1.06)}.orbit-caption{display:none}.universe-bottom{width:calc(100% - 40px);font-size:10px;bottom:6px;align-items:flex-end}.universe-bottom>div{gap:6px}.universe-tools button{font-size:10px;padding:9px 10px}.universe-tools{gap:5px!important}.explore-dot{width:4px;height:4px}.catalog-section{padding-top:50px}}
@media(prefers-reduced-motion:reduce){.orbit-card,.orbit-face,.orbit-caption{transition:none!important}.orbit-face.floating{animation:none}.orbit-world:not(.arrived) .orbit-card{transform:translate3d(var(--x),var(--y),var(--z)) rotate(var(--r));opacity:1}}

.universe{user-select:none;-webkit-user-select:none}
/* Spatial picture ribbon */
.universe{height:590px;perspective:1000px;background:none}.universe-halo{display:none}.wall.tape-world{left:50%;top:52%;width:0;height:0;margin:0;mask-image:none;transform:rotateZ(-14deg) rotateY(-9deg);transform-style:preserve-3d;will-change:auto}.tape-frame{position:absolute;left:-57px;top:-63px;width:114px;height:126px;padding:10px 5px 12px;background:#fff;border:1px solid #e4e9e5;border-radius:3px;box-shadow:0 8px 18px #183c2c12;transform-origin:center;user-select:none;cursor:pointer;backface-visibility:visible}.tape-frame:before,.tape-frame:after{content:"";position:absolute;left:6px;right:6px;height:3px;background:radial-gradient(ellipse,#ced9d0 1.4px,transparent 1.8px) 0 0/12px 3px;pointer-events:none}.tape-frame:before{top:3px}.tape-frame:after{bottom:4px}.tape-frame img{width:100%;height:100%;object-fit:contain;background:#fafbf8;pointer-events:none}.tape-frame:hover,.tape-frame:focus-visible{border-color:var(--green);box-shadow:0 10px 30px #183c2c24;outline:0}.tape-caption{position:absolute;top:calc(100% + 9px);left:50%;transform:translateX(-50%);max-width:220px;width:max-content;padding:7px 12px;border-radius:8px;background:#fff;box-shadow:0 4px 20px #183c2c13;color:var(--secondary);font-size:11px;opacity:0;pointer-events:none}.tape-frame:hover .tape-caption,.tape-frame:focus-visible .tape-caption{opacity:1}.universe:before{background:linear-gradient(90deg,#f7faf8,transparent 10%,transparent 90%,#f7faf8)}.universe:after{background:linear-gradient(#f7faf8,transparent 20%,transparent 80%,#f7faf8)}.universe-top{top:0}.universe-bottom{bottom:10px}
@media(max-width:700px){.universe{height:450px;perspective:700px}.wall.tape-world{top:52%;transform:rotateZ(-16deg);transform-style:preserve-3d}.tape-frame{width:82px;height:94px;left:-41px;top:-47px;padding:8px 4px 10px}.tape-caption{display:none}}