.classboard-home .classboard-nav{gap:18px}.classboard-home .classboard-nav>nav{margin-left:auto}.classboard-home .language-menu{flex-shrink:0;position:relative}.classboard-home .language-menu summary{color:#e5f1ff;cursor:pointer;-webkit-user-select:none;user-select:none;background:#ffffff08;border:1px solid #ffffff38;border-radius:12px;justify-content:center;align-items:center;gap:9px;width:92px;height:44px;padding:0;list-style:none;display:flex}.classboard-home .language-menu summary::-webkit-details-marker{display:none}.classboard-home .language-menu summary:hover,.classboard-home .language-menu[open] summary{background:#ffffff12;border-color:#8bbce1}.classboard-home .language-menu summary:focus-visible{outline-offset:4px;outline:2px solid #9cdbfa}.classboard-home .language-glyphs{align-items:center;gap:4px;height:24px;font-family:Arial,Noto Sans TC,sans-serif;font-size:18px;font-weight:700;line-height:1;display:flex}.classboard-home .language-glyphs span:first-child{color:#f2f6ff}.classboard-home .language-glyphs span:nth-child(2){color:#8fd9f3}.classboard-home .language-glyphs span:nth-child(3){color:#f9d57b}.classboard-home .language-chevron{border-bottom:1.5px solid;border-right:1.5px solid;width:6px;height:6px;transform:rotate(45deg)translateY(-2px)}.classboard-home .language-options{z-index:100;background:#0d223e;border:1px solid #577291;border-radius:14px;min-width:230px;padding:7px;position:absolute;top:calc(100% + 10px);right:0;box-shadow:0 16px 42px #0006}.classboard-home .language-options>a,.classboard-home .language-options>button{box-sizing:border-box;color:#e5effc;text-align:left;white-space:nowrap;cursor:pointer;background:0 0;border:0;border-radius:8px;width:100%;padding:12px 40px 12px 14px;font:600 15px/1.3 system-ui,sans-serif;text-decoration:none;display:block;position:relative}:is(.classboard-home .language-options>:hover,.classboard-home .language-options>:focus-visible){background:#ffffff12;outline:2px solid #0000}.classboard-home .language-options>[aria-current]{color:#ffda83;background:#ffffff08}.classboard-home .language-options>[aria-current]:after{content:"✓";position:absolute;right:13px}.classboard-home .classboard-nav .language-options,.classboard-home .classboard-nav .language-options>a{display:block}.classboard-home[lang=zh-Hant-TW] .brand-slogan{line-height:1.2}.classboard-home[lang=ru] .brand-slogan-hero{overflow-wrap:anywhere;font-size:clamp(3rem,5.5vw,6rem)}.classboard-home .hero-actions{flex-wrap:wrap}@media (max-width:700px){.classboard-home .classboard-nav{gap:8px}.classboard-home .classboard-nav>nav{display:none}.classboard-home .classboard-languages{margin-left:auto}.classboard-home .hero-proof{flex-wrap:wrap}}