:root { --article-bg: #2b0e51; --article-ink: #fff; --article-muted: #b7a6d1; }
* { box-sizing: border-box; }
body { min-height: 100vh; margin: 0; color: var(--article-ink); font-family: Arial, "Microsoft JhengHei", "PingFang TC", sans-serif; background: linear-gradient(to bottom, #2b0e51 0%, #112067 100%); }
a { color: inherit; }
.article-hero { position: relative; min-height: min(66.45vw, 1276px); overflow: hidden; background: transparent; }
.article-hero img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.article-nav { position: absolute; top: clamp(18px, 3vw, 58px); left: max(5vw, calc(50% - 860px)); display: flex; align-items: center; gap: clamp(16px, 2vw, 34px); }
.article-actions { position: absolute; z-index: 2; top: clamp(18px, 3vw, 58px); right: max(5vw, calc(50% - 860px)); display: flex; align-items: center; gap: 10px; }
.article-hero-copy { position: absolute; z-index: 1; top: clamp(124px, 11vw, 212px); left: max(5vw, calc(50% - 860px)); }
.article-hero-copy img { display: block; width: auto; height: auto; object-fit: contain; }
.article-hero-title { width: clamp(330px, 33.5vw, 640px) !important; }
.article-hero-tagline { width: clamp(310px, 30vw, 575px) !important; margin-top: 2px; }
.article-hero .brand { display: block; width: clamp(94px, 7vw, 135px); }
.home-link { display: inline-flex; align-items: center; justify-content: center; min-width: 0; min-height: 42px; padding: 0 20px; border: 1px solid #7bdbff; border-radius: 22px; color: #fff; text-decoration: none; font-weight: 700; background: #211052c9; box-shadow: 0 0 14px #9a3cf480; transition: transform .2s ease, background-color .2s ease; }
.home-link:hover { transform: translateY(-2px); background: #5f2aa8e8; }
.home-link:focus-visible { outline: 3px solid #70ebff; outline-offset: 3px; }
.article-shell { width: min(88vw, 1700px); margin: 0 auto; padding: clamp(54px, 6vw, 112px) 0 clamp(80px, 8vw, 150px); }
.article-shell h1 { margin: 0 0 clamp(45px, 5vw, 90px); text-align: center; font-size: clamp(28px, 2.1vw, 41px); }
.article-copy { width: min(100%, 1450px); margin: 0 auto; font-size: clamp(16px, 1.32vw, 25px); font-weight: 600; line-height: 1.55; }
.article-copy h2 { margin: 1.7em 0 .55em; color: #fff; font-size: 1.12em; }
.article-copy p { margin: .48em 0; }
.article-copy ul { margin: .3em 0 1.1em; padding-left: 1.2em; }
.article-copy li { margin: .15em 0; }
.help-copy { max-width: 1100px; }
.help-copy pre { margin: 0; color: inherit; white-space: pre-wrap; overflow-wrap: anywhere; font: inherit; font-weight: 600; line-height: 1.7; }
.article-note { padding: 1em 1.2em; border-left: 4px solid #8756ff; color: var(--article-muted); background: #20104780; }
.site-footer { min-height: 230px; padding: 31px 20px 26px; border-top: 2px solid #89711e; color: #a8a0c4; text-align: center; letter-spacing: .07em; background: #18074d; font-size: 14px; }
.site-footer > img { display: block; width: 85px; margin: 0 auto 14px; }.site-footer nav { display: flex; justify-content: center; gap: 42px; margin-bottom: 14px; }.site-footer a { text-underline-offset: 4px; }.site-footer p { max-width: 770px; margin: 5px auto; line-height: 1.35; }
.site-footer .language-link { display: inline-block; margin-top: 13px; font-size: 12px; opacity: .8; }
.back-to-top { position: fixed; z-index: 20; right: clamp(16px, 2.5vw, 42px); bottom: clamp(18px, 3vw, 44px); display: grid; width: 58px; height: 58px; padding: 0; place-items: center; border: 1px solid #a9edff99; border-radius: 18px; color: #f9fbff; background: linear-gradient(135deg, #9ceeff26, transparent 48%), linear-gradient(145deg, #5c4dd4f5, #24155df7 72%); box-shadow: inset 0 1px 0 #ffffff4d, inset 0 -1px 0 #16043a80, 0 10px 25px #09032380, 0 0 22px #7654ee59; cursor: pointer; opacity: 0; pointer-events: none; transform: translateY(14px) scale(.94); transition: opacity .2s ease, transform .2s ease, border-color .2s ease, box-shadow .2s ease, background .2s ease; }
.back-to-top::before { position: absolute; inset: 6px; border: 1px solid #d5f8ff40; border-radius: 13px; content: ""; pointer-events: none; }
.back-to-top__icon { position: relative; z-index: 1; display: grid; width: 30px; height: 30px; place-items: center; }.back-to-top__icon svg { width: 100%; height: 100%; overflow: visible; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 2.2; filter: drop-shadow(0 2px 3px #16064f99); }.back-to-top.is-visible { opacity: 1; pointer-events: auto; transform: translateY(0) scale(1); }.back-to-top:hover { border-color: #d9fbff; background: linear-gradient(135deg, #c3f5ff40, transparent 50%), linear-gradient(145deg, #7064e5, #312176 74%); box-shadow: inset 0 1px 0 #ffffff80, inset 0 -1px 0 #16043a80, 0 13px 28px #09032399, 0 0 28px #8b6dff80; transform: translateY(-3px) scale(1.03); }.back-to-top:active { transform: translateY(0) scale(.97); }.back-to-top:focus-visible { outline: 3px solid #70ebff; outline-offset: 4px; }
@media (max-width: 700px) { .article-hero { min-height: 475px; }.article-nav { top: 12px; left: 17px; gap: 11px; }.article-actions { top: 12px; right: 12px; gap: 6px; }.article-hero-copy { top: clamp(112px, 28vw, 170px); left: 50%; transform: translateX(-50%); }.article-hero-title { width: min(92vw, 500px) !important; }.article-hero-tagline { width: min(76vw, 410px) !important; margin: 2px auto 0; }.article-hero .brand { width: 72px; }.home-link { min-height: 30px; padding: 0 10px; font-size: 11px; }.article-shell { width: min(86vw, 600px); padding: 52px 0 78px; }.article-shell h1 { margin-bottom: 40px; font-size: 23px; }.article-copy { font-size: 15px; line-height: 1.65; }.site-footer { min-height: 190px; padding: 22px 18px; font-size: 11px; }.site-footer > img { width: 62px; margin-bottom: 10px; }.site-footer nav { gap: 28px; margin-bottom: 10px; }.back-to-top { width: 48px; height: 48px; right: 15px; bottom: 18px; border-radius: 15px; }.back-to-top::before { inset: 5px; border-radius: 11px; }.back-to-top__icon { width: 26px; height: 26px; } }