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40px}.download-panel{grid-template-columns:120px 1fr;gap:24px}.guide-layout{gap:56px;grid-template-columns:minmax(0,1fr) 240px}}@media(max-width:860px){:root{--gutter: 24px}.site-header{top:0;left:0;width:100%;min-height:66px;transform:none;padding:10px 16px;border-width:0 0 1px;border-radius:0;background:#0c0f13e6}.brand img{width:42px;height:42px}.main-nav{position:absolute;top:calc(100% + 10px);left:16px;right:16px;display:none;grid-template-columns:1fr;gap:0;padding:8px;border:1px solid var(--line);border-radius:var(--radius-md);background:#0c0f13;box-shadow:var(--shadow)}#primary-navigation[data-open]{display:grid}.main-nav a{padding:14px 12px;border-radius:var(--radius-sm)}.menu-button{display:inline-flex}.language-toggle{min-height:42px;padding:0 11px}.portal-section{padding:64px var(--gutter)}.hero{padding-top:112px;grid-template-columns:1fr;gap:40px}.hero-copy{max-width:620px}.hero-visual{max-width:620px;justify-self:center}h1{font-size:3.5rem}.hero-actions .secondary-button{padding-inline:18px}.library-frame{gap:32px}.mood-wall{grid-template-columns:repeat(2,minmax(0,1fr));grid-template-rows:none;gap:24px 16px}.mood-card:first-child{grid-row:auto;grid-column:1/-1}.mood-art{aspect-ratio:418 / 470;border-radius:22px}.mood-card:first-child .mood-art{aspect-ratio:1.7}.mood-art img{min-height:0}.language-gallery{grid-template-columns:repeat(3,minmax(156px,1fr));overflow-x:auto;padding:22px 4px;scroll-snap-type:x mandatory}.language-gallery .phone-card{scroll-snap-align:start;border-radius:24px}.language-gallery .phone-card:nth-child(2){--screen-offset: 0px}.closing-frame{grid-template-columns:1fr;gap:40px;padding-bottom:24px}.download-panel{grid-template-columns:110px 1fr;max-width:560px}.download-qr{display:none}.footer-links{gap:18px}.guide-page{padding:120px 24px 48px}.guide-heading{margin-bottom:36px}.guide-heading h1{font-size:2.75rem}.guide-layout{grid-template-columns:1fr;gap:32px}.guide-side{max-width:240px}}@media(max-width:600px){:root{--gutter: 18px}h1{font-size:3rem}h2{font-size:2.5rem}.hero-copy,.section-copy,.mood-copy,.workflow-copy,.language-copy,.closing-copy{gap:20px}.hero-visual{aspect-ratio:.9}.phone.main{left:21%;width:58%}.phone.side-a{left:-12%;width:49%}.phone.side-b{right:-12%;width:49%}.proof-list,.library-grid{grid-template-columns:1fr}.library-shot,.library-shot.wide{grid-template-columns:1fr;grid-template-rows:auto;gap:18px;padding:20px}.library-shot .crop-phone,.library-shot.wide .crop-phone{height:240px;max-width:none}.feature-copy strong{font-size:1.4rem}.verb{grid-template-columns:70px minmax(0,1fr);gap:14px;padding-block:18px}.stack{aspect-ratio:.9}.stack .phone:nth-child(1){left:0;width:53%;top:48px}.stack .phone:nth-child(2){right:0;width:53%}.locale-note{grid-template-columns:1fr}.footer-row{display:grid;gap:18px}.trademark-note{max-width:55ch}}@media(max-width:430px){.site-header{padding-inline:14px;gap:10px}.brand{gap:8px}.brand span{font-size:.98rem}.language-toggle{font-size:.86rem}.hero-actions,.cta-row{gap:24px}h1,[lang=zh-Hans] h1{font-size:2.5rem}.hero-actions .secondary-button,.cta-row .secondary-button{font-size:.9rem;padding-inline:16px}.guide-heading h1{font-size:2.4rem}}@media(max-width:360px){h1{font-size:2rem}[lang=zh-Hans] h1{font-size:2.25rem}.hero-actions,.cta-row{align-items:flex-start;flex-direction:column}.brand span{font-size:.9rem}.brand img{width:36px;height:36px}.header-actions{gap:6px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}