.header{position:fixed;top:0;left:0;right:0;z-index:var(--z-index-sticky);background:var(--md-sys-color-surface);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:0 1px 3px #0000000d;transition:all var(--transition-fast)}.header:after{content:"";position:absolute;bottom:0;left:0;right:0;height:1px;background:var(--md-sys-color-outline-variant);transition:all var(--transition-fast)}.header.scrolled{background:var(--md-sys-color-surface);box-shadow:0 2px 8px #00000014}.header.scrolled:after{background:var(--md-sys-color-outline)}.nav{width:100%;padding:0}.nav__wrapper{display:flex;align-items:center;justify-content:space-between;width:100%;padding:0 16px;height:var(--header-height-mobile, 56px);position:relative}.nav__logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--md-sys-color-on-surface);font-size:22px;font-weight:700;letter-spacing:-.5px;transition:all 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var(--transition-fast)}.nav__toggle-icon:before{top:-8px}.nav__toggle-icon:after{bottom:-8px}.nav__toggle[aria-expanded=true] .nav__toggle-icon{background:transparent}.nav__toggle[aria-expanded=true] .nav__toggle-icon:before{top:0;transform:rotate(45deg)}.nav__toggle[aria-expanded=true] .nav__toggle-icon:after{bottom:0;transform:rotate(-45deg)}@media (min-width: 768px){.nav__wrapper{height:var(--header-height-tablet, 60px);padding:0 20px}.nav__logo{font-size:24px}.nav__logo svg{width:30px;height:30px}}@media (min-width: 1024px){.nav__wrapper{height:var(--header-height-desktop, 72px);padding:0 24px}.nav__menu-container{display:flex;justify-content:center}.nav__logo{font-size:28px;gap:12px}.nav__logo svg{width:34px;height:34px}.nav__menu{display:flex;position:static;flex-direction:row;gap:var(--spacing-xs);padding:0;border:none;animation:none;align-items:center}.nav__item--mobile-only{display:none}.nav__link{padding:12px 20px;min-height:auto}.nav__link:hover{background:transparent}.nav__link:after{content:"";position:absolute;bottom:-2px;left:50%;width:0;height:4px;background:linear-gradient(90deg,var(--gradient-start),var(--gradient-end));border-radius:2px;transform:translate(-50%);transition:width var(--transition-fast) cubic-bezier(.4,0,.2,1)}.nav__link:hover:after,.nav__link.active:after{width:85%}.nav__download-btn{display:flex!important;padding:12px 24px;font-size:16px;font-weight:600;letter-spacing:.3px;align-items:center;gap:8px;white-space:nowrap;min-height:44px}.nav__download-btn svg{width:18px;height:18px}.nav__toggle{display:none}}@media (min-width: 1440px){.nav__wrapper{max-width:1440px;margin:0 auto}}.install-loading{display:flex;align-items:center;justify-content:center;min-height:100vh;background:var(--md-sys-color-background)}.spinner{width:48px;height:48px;border:3px solid var(--md-sys-color-outline);border-top-color:var(--md-sys-color-primary);border-radius:50%;animation:spin 1s 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0;display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.install-video__author{font-size:14px;color:var(--text-gray);margin:0 0 var(--spacing-md) 0}.install-video__download-btn{display:flex;align-items:center;justify-content:center;gap:var(--spacing-xs);width:100%;min-height:48px;padding:12px 24px;background:var(--md-sys-color-success);color:#fff;font-size:16px;font-weight:600;border:none;border-radius:var(--md-sys-shape-corner-small);cursor:pointer;transition:all .25s cubic-bezier(.4,0,.2,1);box-shadow:0 2px 8px #10b9814d}.install-video__download-btn:hover{background:var(--color-success-dark);transform:translateY(-2px);box-shadow:0 4px 16px #10b98166}.install-video__download-btn:active{transform:translateY(0)}.video-features{background:var(--md-sys-color-surface);border:1px solid var(--md-sys-color-outline);border-radius:var(--md-sys-shape-corner-medium);padding:var(--spacing-lg)}.video-feature{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-xs) 0}.video-feature:not(:last-child){border-bottom:1px solid var(--md-sys-color-outline-variant);padding-bottom:var(--spacing-sm);margin-bottom:var(--spacing-xs)}.video-feature__icon{width:20px;height:20px;border:2px solid var(--md-sys-color-success);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--md-sys-color-success);font-size:12px;font-weight:700;flex-shrink:0}.video-feature__text{font-size:14px;font-weight:500;color:var(--md-sys-color-on-surface)}.bento-right{display:grid;grid-template-rows:auto auto 1fr;gap:var(--spacing-lg)}.install-cta{background:transparent;border:none;padding:var(--spacing-md) 0;text-align:center}.install-cta__title{font-size:48px;font-weight:700;line-height:1.05;letter-spacing:-1px;color:#1a1a1a;margin:0 0 var(--spacing-md) 0}.install-cta__brand{color:var(--md-sys-color-primary);font-weight:700}.install-cta__subtitle{font-size:21px;font-weight:400;line-height:1.35;letter-spacing:-.01em;color:#666;max-width:600px;margin:0 auto}.install-platforms{display:flex;flex-direction:column;gap:var(--spacing-sm)}.platform-btn{position:relative;display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-lg);background:var(--md-sys-color-surface);border:2px solid var(--md-sys-color-outline);border-radius:var(--md-sys-shape-corner-medium);cursor:pointer;transition:all .25s cubic-bezier(.4,0,.2,1);overflow:visible;text-align:left}.platform-btn:after{position:absolute;right:var(--spacing-lg);color:var(--md-sys-color-primary);font-weight:600;font-size:15px;opacity:0;transform:translate(-10px);transition:all .25s cubic-bezier(.4,0,.2,1)}#platform-macos:after{content:"Download for macOS"}#platform-windows:after{content:"Download for Windows"}#platform-android:after{content:"Download for Android"}.platform-btn:hover{transform:translateY(-2px);border-color:var(--md-sys-color-primary);box-shadow:0 4px 16px var(--shadow-blue-light);background:var(--bg-blue-lighter)}.platform-btn:hover:after{opacity:1;transform:translate(0)}.platform-btn--recommended{border-color:var(--md-sys-color-primary);border-width:2px}.platform-btn__badge{display:none;position:absolute;top:-10px;left:50%;transform:translate(-50%);padding:4px 12px;background:var(--md-sys-color-primary);color:var(--md-sys-color-on-primary);font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;border-radius:100px;box-shadow:0 2px 8px var(--shadow-blue-medium);white-space:nowrap}.platform-btn--recommended .platform-btn__badge{display:block}.platform-btn__icon{width:48px;height:48px;flex-shrink:0;transition:transform .25s cubic-bezier(.4,0,.2,1)}.platform-btn:hover 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reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}.platform-btn:focus-visible,.install-video__download-btn:focus-visible{outline:3px solid var(--md-sys-color-primary);outline-offset:2px}@media print{.install-hero:before{display:none}.platform-btn__download,.install-video__download-btn{display:none}}