:root{--md-sys-color-primary:#49aad4;--md-sys-color-on-primary:#102a43;--md-sys-color-primary-container:#daf0fa;--md-sys-color-surface:#fff;--md-sys-color-surface-variant:#f5f7fa;--md-sys-color-on-surface:#1c1b1f;--md-sys-color-on-surface-variant:#49454f;--md-sys-color-outline:#ccc;--md-sys-color-outline-variant:#e8e8e8;--nav-width:272px;--header-height:56px;--font:"Roboto", "Noto Sans TC", system-ui, sans-serif;--md-sys-color-on-primary-container:#12394c;--md-sys-color-primary-hover:#3895be;--md-sys-color-primary-surface:#f0f9fd;--md-sys-color-primary-outline:#aad9ed}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;font-size:16px}body{font-family:var(--font);background:var(--md-sys-color-surface-variant);color:var(--md-sys-color-on-surface);flex-direction:column;min-height:100vh;line-height:1.6;display:flex}.top-app-bar{z-index:200;height:var(--header-height);color:#212121;background:0 0;align-items:center;gap:4px;padding:0 8px 0 4px;display:flex;position:fixed;top:0;left:0;right:0}.top-app-bar--over-hero{color:var(--header-on-hero)}.top-app-bar__menu-btn{width:48px;height:48px;color:inherit;cursor:pointer;background:0 0;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;display:flex}.top-app-bar__menu-btn:hover{background:color-mix(in srgb, currentColor 12%, transparent)}.top-app-bar__menu-btn:focus-visible{outline-offset:-4px;outline:2px solid}.top-app-bar__logo{color:inherit;flex:1;align-items:center;gap:12px;min-width:0;text-decoration:none;display:flex}.top-app-bar__logo img{object-fit:contain;flex-shrink:0;width:36px;height:36px}.top-app-bar__title{white-space:nowrap;text-overflow:ellipsis;font-size:1.125rem;font-weight:500;overflow:hidden}body.nav-open{overflow:hidden}body.nav-open .top-app-bar{visibility:hidden}@media (width<=1279px){.layout-body:not(:has(.page-hero,.cover-hero)){padding-top:var(--header-height)}}.nav-scrim{z-index:299;background:#0006;display:none;position:fixed;inset:0}.nav-scrim.active{display:block}.site-body{flex:1;align-items:flex-start;display:flex}.nav-drawer{height:100dvh;width:var(--nav-width);z-index:300;background:#1c1f26;flex-direction:column;transition:transform .22s cubic-bezier(.2,0,0,1);display:flex;position:fixed;top:0;bottom:0;left:0;overflow:hidden;transform:translate(-100%)}.nav-drawer.open{transform:translate(0)}.nav-drawer__home{display:none}.nav-drawer__home img{filter:invert();flex-shrink:0;width:28px;height:28px}@media (width>=1280px){.nav-drawer{z-index:10;flex-shrink:0;transition:none;position:sticky;top:0;transform:none}.nav-drawer .nav-drawer__header,.top-app-bar{display:none}.nav-scrim{display:none!important}.nav-drawer__home{color:#fff;border-bottom:1px solid #ffffff26;flex-shrink:0;align-items:center;gap:8px;margin-bottom:8px;padding:20px 16px 12px;font-size:1rem;font-weight:700;text-decoration:none;display:flex}}.nav-drawer__header{height:var(--header-height);background:var(--md-sys-color-primary);color:var(--md-sys-color-on-primary);flex-shrink:0;align-items:center;gap:8px;padding:0 16px;display:flex}.nav-drawer__header a{min-width:0;color:inherit;white-space:nowrap;text-overflow:ellipsis;flex:1;font-size:1.125rem;font-weight:500;text-decoration:none;overflow:hidden}.nav-drawer__close{width:40px;height:40px;color:inherit;cursor:pointer;background:0 0;border:0;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;display:flex}.nav-drawer__close:hover{background:#ffffff1f}.nav-drawer__close:focus-visible{outline-offset:2px;outline:2px solid}.nav-drawer__content{flex:1;padding:8px 0;overflow-y:auto}.nav-list{list-style:none}.nav-item-header{cursor:pointer;user-select:none;color:#ffffffd9;letter-spacing:.01em;border-radius:0 24px 24px 0;align-items:center;height:48px;margin-right:12px;padding-left:16px;font-size:.875rem;font-weight:500;text-decoration:none;transition:background .12s;display:flex}.nav-item-header:hover{background:#ffffff1a}.nav-item-header.active{background:color-mix(in srgb, var(--md-sys-color-primary) 25%, transparent);color:var(--md-sys-color-primary)}.nav-item-header__icon{flex-shrink:0;width:24px;height:24px;margin-right:12px}.nav-item-header__text{text-overflow:ellipsis;white-space:nowrap;flex:1;overflow:hidden}.nav-item-header__expand{border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;transition:transform .2s;display:flex}.nav-item-header__expand:hover{background:#ffffff1f}.nav-item-header__expand svg{color:#fff9;width:18px;height:18px;transition:transform .2s}.nav-item.expanded>.nav-item-header .nav-item-header__expand svg{transform:rotate(180deg)}.nav-children{display:none}.nav-item.expanded>.nav-children{display:block}.nav-children .nav-item-header{padding-left:32px;font-weight:400}.nav-children .nav-children .nav-item-header{padding-left:48px}.nav-item-header__expand{color:inherit;cursor:pointer;background:0 0;border:0;padding:0}.nav-item-header__expand:focus-visible{outline-offset:3px;outline:2px solid}.layout-body{flex-direction:column;flex:1;align-self:stretch;min-width:0;display:flex}.page-hero{background:#444;min-height:200px;position:relative;overflow:hidden}.page-hero__bg{background-position:50%;background-size:cover;position:absolute;inset:0}.page-hero__overlay{position:absolute;inset:0}.page-hero__content{z-index:1;flex-direction:column;justify-content:flex-end;align-items:flex-start;width:100%;max-width:1200px;min-height:200px;margin:0 auto;padding:32px 24px 28px;display:flex;position:relative}.page-hero__title{color:#fff;text-shadow:0 1px 4px #00000080;margin-bottom:4px;font-size:2rem;font-weight:700}.page-hero__subtitle{color:#ffffffe0;text-shadow:0 1px 3px #0006;font-size:1rem}.page-content{flex:1;width:100%;max-width:1200px;margin:0 auto;padding:24px 16px 64px}.site-footer{color:#333;background:#f2f2f2;padding:40px 24px 24px;font-family:Merriweather,Arial,serif;font-size:.8125rem}.site-footer__grid{border-bottom:1px solid #ddd;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:32px;max-width:1200px;margin:0 auto 16px;padding-bottom:24px;display:grid}.site-footer__office h3{color:#111;letter-spacing:normal;text-transform:none;margin-bottom:8px;font-family:Merriweather,Arial,serif;font-size:12pt;font-weight:700}.site-footer__office p{color:#333;font-size:.8125rem;line-height:1.7}.site-footer__office a{color:#333}.site-footer__bottom{text-align:center;color:#666;border-top:1px solid #ddd;max-width:1200px;margin:0 auto;padding-top:16px;font-size:.8125rem}img{max-width:100%;height:auto;display:block}.embedded-content{background:var(--md-sys-color-surface-variant)}.embedded-content>*{max-width:100%}@media (width<=600px){.page-hero__title{font-size:1.5rem}.page-hero__content{padding:24px 16px 20px}}.line-btn{margin-top:12px;display:inline-block}.line-btn img{width:auto;height:36px;display:block}.belt-notation{margin:16px 0;font-size:.9rem}.notation-label{color:#555;margin-right:8px;font-size:.88rem}.notation-parts{align-items:flex-start;gap:0;display:inline-flex}.notation-part{text-align:center;flex-direction:column;align-items:center;display:flex}.notation-part .notation-value{color:#222;padding:0 6px;font-size:1rem;font-weight:700;text-decoration:underline}.notation-part .notation-sub{color:#888;margin-top:2px;padding:0 6px;font-size:.75rem}.notation-sep{color:#555;align-self:flex-start;margin-top:2px;padding:0 4px;font-size:1rem;line-height:1.5}.desktop-header{display:none}.nav-item-header{border-radius:4px;height:auto;min-height:48px}.nav-item-header__text{white-space:normal;overflow-wrap:anywhere;padding-block:10px}@media (width>=1280px){.desktop-header{z-index:250;background:var(--md-sys-color-surface);border-bottom:1px solid var(--md-sys-color-outline-variant);display:block;position:sticky;top:0}.desktop-header__inner{justify-content:space-between;align-items:center;gap:40px;max-width:1440px;min-height:84px;margin-inline:auto;padding-inline:40px;display:flex}.desktop-brand{color:var(--md-sys-color-on-surface);white-space:nowrap;align-items:center;gap:12px;font-size:19px;font-weight:700;text-decoration:none;display:flex}.desktop-brand img{width:36px;height:36px}.desktop-brand small{letter-spacing:.08em;color:var(--md-sys-color-on-surface-variant);font-size:11px;font-weight:400;display:block}.desktop-nav__list{gap:24px;list-style:none;display:flex}.desktop-nav__heading{align-items:center;min-height:84px;display:flex;position:relative}.desktop-nav__heading>a{color:var(--md-sys-color-on-surface);white-space:nowrap;padding-block:28px;font-size:16px;font-weight:500;text-decoration:none}.desktop-nav__item.is-current .desktop-nav__heading:after{content:"";background:var(--md-sys-color-primary);height:3px;position:absolute;bottom:0;left:0;right:0}.desktop-nav__toggle{width:32px;height:40px;color:var(--md-sys-color-on-surface-variant);cursor:pointer;background:0 0;border:0;border-radius:4px;place-items:center;display:grid}.desktop-nav__toggle[aria-expanded=true] svg{transform:rotate(180deg)}.desktop-nav__toggle:hover,.desktop-nav__links a:hover{background:var(--md-sys-color-surface-variant)}.desktop-header a:focus-visible,.desktop-header button:focus-visible{outline:2px solid var(--md-sys-color-primary);outline-offset:3px}.desktop-nav__panel{background:var(--md-sys-color-surface);border:1px solid var(--md-sys-color-outline-variant);max-width:1280px;max-height:calc(100dvh - 108px);margin-inline:auto;padding:28px 32px 32px;position:absolute;top:100%;left:40px;right:40px;overflow-y:auto;box-shadow:0 12px 24px #00000014}.desktop-nav__panel-heading{border-bottom:1px solid var(--md-sys-color-outline-variant);justify-content:space-between;align-items:center;margin-bottom:16px;padding-bottom:16px;display:flex}.desktop-nav__panel-heading>span{font-size:18px;font-weight:700}.desktop-nav__panel-heading>a{color:var(--md-sys-color-on-primary-container);text-underline-offset:4px;font-size:14px}.desktop-nav__links{grid-template-columns:repeat(4,minmax(0,1fr));gap:4px 24px;list-style:none;display:grid}.desktop-nav__links a{color:var(--md-sys-color-on-surface);overflow-wrap:anywhere;border-radius:4px;padding:12px;font-size:15px;text-decoration:none;display:block}.desktop-nav__links a.is-current{background:var(--md-sys-color-primary-surface);color:var(--md-sys-color-on-primary-container);font-weight:500}.nav-drawer{display:none}.site-body{width:100%}html{scroll-padding-top:100px}}@media (width<=1279px){.nav-drawer{background:var(--md-sys-color-surface);width:min(360px,100vw - 24px);color:var(--md-sys-color-on-surface);border-right:1px solid var(--md-sys-color-outline-variant)}.nav-drawer__header{background:var(--md-sys-color-surface);height:auto;min-height:84px;color:var(--md-sys-color-on-surface);border-bottom:1px solid var(--md-sys-color-outline-variant);padding:16px}.nav-drawer__header .nav-drawer__brand{white-space:normal;align-items:center;gap:10px;font-size:16px;font-weight:700;display:flex}.nav-drawer__brand img{flex-shrink:0;width:28px;height:28px}.nav-drawer__brand small{letter-spacing:.04em;color:var(--md-sys-color-on-surface-variant);margin-top:2px;font-size:10px;font-weight:400;display:block}.nav-drawer__close{border-radius:4px;width:44px;height:44px}.nav-drawer__content{overscroll-behavior:contain;padding:16px 12px 24px}.nav-drawer__content>.nav-list>.nav-item+.nav-item{margin-top:8px}.nav-drawer .nav-item-header{min-height:48px;color:var(--md-sys-color-on-surface);border-radius:4px;margin-right:0;padding-left:12px;padding-right:4px;font-size:16px;font-weight:500}.nav-drawer .nav-children{border-left:1px solid var(--md-sys-color-outline-variant);margin-left:16px}.nav-drawer .nav-children .nav-item-header{min-height:44px;font-size:14px;font-weight:400}.nav-drawer .nav-item.expanded>.nav-item-header{font-weight:500}.nav-drawer .nav-item-header__text{min-width:0;padding-block:12px;line-height:1.5}.nav-drawer .nav-item-header:hover,.nav-drawer__close:hover,.nav-drawer .nav-item-header__expand:hover{background:var(--md-sys-color-surface-variant)}.nav-drawer .nav-item-header.active{background:var(--md-sys-color-primary-surface);color:var(--md-sys-color-on-primary-container);box-shadow:inset 3px 0 var(--md-sys-color-primary);font-weight:500}.nav-drawer .nav-item-header__expand{border-radius:4px;width:44px;height:44px}.nav-drawer .nav-item-header__expand svg{color:var(--md-sys-color-on-surface-variant);stroke-width:1.5px}.nav-drawer a:focus-visible,.nav-drawer button:focus-visible{outline:2px solid var(--md-sys-color-primary);outline-offset:-2px}}.layout-body img[hidden],.layout-body .img-block[hidden]{display:none!important}.native-file-card--without-preview{min-height:48px;aspect-ratio:auto!important}