/* ===========================================================================
   Eutunia 官網 — 樣式表（英文頁與繁中頁共用）
   色值、字級、間距全部來自 design handoff 的 design token，請勿自行發明新色。
   =========================================================================== */

/* ---------- Design tokens ---------- */
:root{
  /* Colors */
  --eu-sea-blue:#163a63;
  --eu-sea-blue-press:#1f4f86;
  --eu-sea-blue-tint:#23517f;
  --eu-sea-blue-hover:#23517f;
  --eu-link-blue:#2c6fb3;
  --eu-link-blue-hover:#3f87ce;
  --eu-white:#ffffff;
  --eu-sky-tint:#e1eaf3;
  --eu-ink:#1d1d1d;
  --eu-ink-mute:#6b6b6b;
  --eu-on-sea:#ffffff;
  --eu-on-sea-mute:#a9c2de;
  --eu-hairline:#e6e6e6;

  /* Type */
  --eu-font-display:'Sora','Noto Sans TC',system-ui,-apple-system,BlinkMacSystemFont,sans-serif;
  --eu-font-ui:'Inter','Noto Sans TC',system-ui,-apple-system,sans-serif;

  /* Radius */
  --eu-radius-md:8px;
  --eu-radius-lg:12px;
  --eu-radius-pill:90px;

  /* Elevation */
  --eu-elev-1:rgba(0,0,0,0.1) 0 5px 20px 0;
  --eu-elev-2:rgba(0,0,0,0.1) 0 0 32px 0;
  --eu-elev-3:rgba(0,0,0,0.2) 0 1px 10px 0;
  --eu-focus-ring:0 0 0 3px rgba(44,111,179,0.35);

  /* Spacing */
  --eu-container:1240px;
  --eu-gutter:24px;

  /* Motion */
  --eu-ease-standard:cubic-bezier(0.2,0,0,1);
  --eu-dur-fast:120ms;
  --eu-dur-base:200ms;

  /* Gradients */
  --eu-mesh-hero:
    radial-gradient(60% 70% at 12% 18%, rgba(227,201,156,0.92) 0%, rgba(227,201,156,0) 68%),
    radial-gradient(55% 65% at 86% 12%, rgba(225,234,243,0.95) 0%, rgba(225,234,243,0) 70%),
    radial-gradient(70% 80% at 72% 88%, rgba(232,184,146,0.62) 0%, rgba(232,184,146,0) 72%),
    radial-gradient(90% 90% at 40% 100%, rgba(225,234,243,0.85) 0%, rgba(255,255,255,0) 70%),
    #ffffff;
}

@media (prefers-reduced-motion:reduce){
  :root{--eu-dur-fast:0ms;--eu-dur-base:0ms}
}

/* ---------- Base ---------- */
*,*::before,*::after{box-sizing:border-box}

html{-webkit-text-size-adjust:100%}

body{
  margin:0;
  min-height:100vh;
  display:flex;
  flex-direction:column;
  background:var(--eu-white);
  color:var(--eu-ink);
  font-family:var(--eu-font-ui);
  font-size:16px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

h1{font-family:var(--eu-font-display);color:var(--eu-ink);margin:0}
p{margin:0;text-wrap:pretty}
img,svg{display:block;max-width:100%}
::selection{background:var(--eu-sky-tint);color:var(--eu-ink)}

a:focus-visible,button:focus-visible{outline:none;box-shadow:var(--eu-focus-ring)}

.eu-container{
  width:100%;
  max-width:var(--eu-container);
  margin:0 auto;
  padding:0 var(--eu-gutter);
}

.eu-visually-hidden{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ---------- 語言提示條（僅 notice 模式會顯示） ---------- */
.eu-notice{
  display:none;
  background:var(--eu-sea-blue);
  color:var(--eu-white);
  padding:12px var(--eu-gutter);
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
  gap:16px;
  font:400 14px/1.4 var(--eu-font-ui);
}
.eu-notice[data-open="true"]{display:flex}
.eu-notice a{
  color:var(--eu-white);font-weight:700;text-decoration:underline;
  text-underline-offset:4px;
}
.eu-notice__dismiss{
  background:transparent;border:1px solid var(--eu-sea-blue-tint);
  color:var(--eu-on-sea-mute);padding:6px 14px;border-radius:var(--eu-radius-pill);
  cursor:pointer;font:400 13px/1 var(--eu-font-ui);
  transition:background-color var(--eu-dur-base) var(--eu-ease-standard),
             color var(--eu-dur-base) var(--eu-ease-standard);
}
.eu-notice__dismiss:hover{background:rgba(255,255,255,0.10);color:var(--eu-white)}

/* ---------- Hero section ---------- */
.eu-hero{
  background:var(--eu-mesh-hero);
  padding:0 0 96px;
}

/* ---------- Header ---------- */
.eu-header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding-top:22px;
  padding-bottom:22px;
}

.eu-logo{
  display:flex;align-items:center;gap:10px;text-decoration:none;
}
.eu-logo img{width:32px;height:32px}
.eu-logo span{
  font:700 21px/1 var(--eu-font-display);
  letter-spacing:-0.5px;
  color:var(--eu-sea-blue);
}

.eu-nav{display:flex;align-items:center;gap:4px}

/* 幽靈按鈕（header 上的 Sign in / 語言） */
.eu-btn-ghost{
  display:flex;align-items:center;gap:7px;
  background:transparent;border:0;
  padding:10px 14px;border-radius:var(--eu-radius-pill);
  cursor:pointer;
  font:700 14.4px/1 var(--eu-font-ui);
  color:var(--eu-ink);
  text-decoration:none;
  transition:background-color var(--eu-dur-base) var(--eu-ease-standard);
}
.eu-btn-ghost:hover{background:rgba(255,255,255,0.7);color:var(--eu-ink)}

/* Primary pill（header 版） */
.eu-btn-primary-sm{
  margin-left:8px;
  padding:12px 22px;border-radius:var(--eu-radius-pill);
  background:var(--eu-sea-blue);color:var(--eu-white);
  text-decoration:none;
  font:700 14.4px/1 var(--eu-font-ui);
  box-shadow:var(--eu-elev-1);
  transition:background-color var(--eu-dur-base) var(--eu-ease-standard);
  white-space:nowrap;
}
.eu-btn-primary-sm:hover{background:var(--eu-sea-blue-hover);color:var(--eu-white)}
.eu-btn-primary-sm:active{background:var(--eu-sea-blue-press)}

/* ---------- 語言選單 ---------- */
.eu-lang{position:relative}
.eu-lang__menu{
  position:absolute;
  top:calc(100% + 8px);
  right:0;
  min-width:184px;
  background:var(--eu-white);
  border:1px solid var(--eu-hairline);
  border-radius:var(--eu-radius-lg);
  padding:6px;
  box-shadow:var(--eu-elev-2);
  z-index:30;
}
.eu-lang__menu[hidden]{display:none}
.eu-lang__menu a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 12px;border-radius:var(--eu-radius-md);
  text-decoration:none;
  font:400 15px/1.2 var(--eu-font-ui);
  color:var(--eu-ink);
  transition:background-color var(--eu-dur-fast) var(--eu-ease-standard);
}
.eu-lang__menu a:hover{background:var(--eu-sky-tint);color:var(--eu-ink)}
.eu-lang__check{color:var(--eu-sea-blue)}

/* footer 版語言選單 */
.eu-lang--foot .eu-lang__menu{
  top:auto;
  bottom:calc(100% + 8px);
  box-shadow:var(--eu-elev-3);
}
.eu-btn-lang-foot{
  display:flex;align-items:center;gap:7px;
  background:transparent;border:1px solid var(--eu-sea-blue-tint);
  color:var(--eu-white);
  padding:9px 14px;border-radius:var(--eu-radius-pill);
  cursor:pointer;
  font:700 14px/1 var(--eu-font-ui);
  transition:background-color var(--eu-dur-base) var(--eu-ease-standard);
}
.eu-btn-lang-foot:hover{background:rgba(255,255,255,0.10)}

/* ---------- Hero 文字 ---------- */
.eu-hero__text{text-align:center;padding-top:76px}

.eu-eyebrow{
  display:inline-block;
  background:var(--eu-white);
  border:1px solid var(--eu-hairline);
  border-radius:var(--eu-radius-pill);
  padding:9px 18px;
  margin-bottom:30px;
  font:700 12px/1 var(--eu-font-ui);
  letter-spacing:0.96px;
  text-transform:uppercase;
  color:var(--eu-sea-blue);
}

.eu-h1{
  margin:0;
  font:700 clamp(40px,5.2vw,64px)/1.06 var(--eu-font-display);
  letter-spacing:-0.012em;
  color:var(--eu-ink);
  text-wrap:balance;
}

.eu-sub{
  margin:26px auto 0;
  max-width:660px;
  font:400 20px/1.55 var(--eu-font-ui);
  color:var(--eu-ink-mute);
}

.eu-cta-row{
  display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:40px;
}

.eu-btn-primary{
  padding:17px 32px;border-radius:var(--eu-radius-pill);
  background:var(--eu-sea-blue);color:var(--eu-white);
  text-decoration:none;
  font:700 15px/1 var(--eu-font-ui);
  box-shadow:var(--eu-elev-1);
  transition:background-color var(--eu-dur-base) var(--eu-ease-standard);
}
.eu-btn-primary:hover{background:var(--eu-sea-blue-hover);color:var(--eu-white)}
.eu-btn-primary:active{background:var(--eu-sea-blue-press)}

.eu-btn-outline{
  padding:15px 30px;
  border:2px solid var(--eu-sea-blue);
  border-radius:var(--eu-radius-pill);
  background:transparent;color:var(--eu-sea-blue);
  text-decoration:none;
  font:700 15px/1 var(--eu-font-ui);
  transition:background-color var(--eu-dur-base) var(--eu-ease-standard);
}
.eu-btn-outline:hover{background:var(--eu-sky-tint);color:var(--eu-sea-blue)}
.eu-btn-outline:active{background:var(--eu-sky-tint)}

.eu-assurance{
  margin:22px 0 0;
  font:400 14px/1.55 var(--eu-font-ui);
  color:var(--eu-ink-mute);
}

/* ---------- Hero 產品截圖 ---------- */
.eu-shot{
  width:100%;max-width:1080px;
  margin:68px auto 0;
  border-radius:var(--eu-radius-lg);
  box-shadow:var(--eu-elev-2);
  overflow:hidden;
}
.eu-shot img{
  width:100%;height:auto;aspect-ratio:3 / 2;object-fit:cover;display:block;
}

/* ---------- Footer ---------- */
.eu-footer{
  margin-top:auto;
  background:var(--eu-sea-blue);
  color:var(--eu-white);
  padding:76px 0 40px;
}
.eu-footer__top{
  display:flex;flex-wrap:wrap;align-items:flex-start;justify-content:space-between;gap:48px;
}
.eu-footer__brand{display:flex;align-items:center;gap:10px}
.eu-footer__brand img{width:30px;height:30px}
.eu-footer__brand span{
  font:700 20px/1 var(--eu-font-display);
  letter-spacing:-0.4px;color:var(--eu-white);
}
.eu-footer__tagline{
  margin-top:16px;max-width:330px;
  font:400 15px/1.55 var(--eu-font-ui);
  color:var(--eu-on-sea-mute);
}
.eu-footer__legal{display:flex;flex-direction:column;gap:14px;min-width:200px}
.eu-footer__legal-title{
  font:700 12px/1 var(--eu-font-ui);
  letter-spacing:0.96px;text-transform:uppercase;
  color:var(--eu-on-sea-mute);
}
.eu-footer__legal a{
  font:400 15px/1.4 var(--eu-font-ui);
  color:var(--eu-white);
  text-decoration:underline;
  text-underline-offset:4px;
  text-decoration-thickness:1px;
  transition:text-decoration-thickness var(--eu-dur-base) var(--eu-ease-standard);
}
.eu-footer__legal a:hover{color:var(--eu-white);text-decoration-thickness:2px}

.eu-footer__rule{height:1px;background:var(--eu-sea-blue-tint);margin:52px 0 24px}

.eu-footer__bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
}
.eu-footer__copy{
  font:400 14px/1.55 var(--eu-font-ui);
  color:var(--eu-on-sea-mute);
}

/* ---------- 繁中頁：中文需要更寬的行距 ---------- */
html[lang="zh-Hant-TW"] .eu-h1{
  font-size:clamp(36px,4.8vw,58px);
  line-height:1.16;
  letter-spacing:-0.01em;
}
html[lang="zh-Hant-TW"] .eu-sub{
  max-width:640px;
  font-size:19px;
  line-height:1.75;
}
html[lang="zh-Hant-TW"] .eu-eyebrow{
  font-size:13px;
  letter-spacing:1.2px;
  text-transform:none;
}
html[lang="zh-Hant-TW"] .eu-assurance,
html[lang="zh-Hant-TW"] .eu-footer__tagline,
html[lang="zh-Hant-TW"] .eu-footer__copy{line-height:1.7}
html[lang="zh-Hant-TW"] .eu-footer__legal-title{
  font-size:13px;letter-spacing:1.2px;text-transform:none;
}

/* ---------- Responsive ---------- */
@media (max-width:992px){
  .eu-hero{padding-bottom:72px}
  .eu-hero__text{padding-top:60px}
  .eu-sub{font-size:19px}
  .eu-shot{margin-top:52px}
  .eu-footer{padding:64px 0 36px}
  .eu-footer__top{gap:36px}
}

@media (max-width:768px){
  /* mesh 漸層重新鋪排，不淡出 */
  .eu-hero{
    background:
      radial-gradient(85% 42% at 6% 6%, rgba(227,201,156,0.95) 0%, rgba(227,201,156,0) 66%),
      radial-gradient(80% 38% at 96% 4%, rgba(225,234,243,0.95) 0%, rgba(225,234,243,0) 68%),
      radial-gradient(100% 46% at 82% 74%, rgba(232,184,146,0.66) 0%, rgba(232,184,146,0) 70%),
      radial-gradient(130% 52% at 40% 100%, rgba(225,234,243,0.9) 0%, rgba(255,255,255,0) 72%),
      #ffffff;
    padding-bottom:56px;
  }
  .eu-hero__text{padding-top:48px}
  .eu-sub{font-size:18px;margin-top:22px}
  html[lang="zh-Hant-TW"] .eu-sub{font-size:17px}
  .eu-cta-row{margin-top:32px}
  .eu-btn-primary{padding:16px 28px}
  .eu-btn-outline{padding:14px 26px}
  .eu-shot{margin-top:40px}
  .eu-footer{padding:56px 0 32px}
  .eu-footer__rule{margin:40px 0 20px}

  /* 觸控目標 ≥ 44px */
  .eu-btn-ghost,.eu-btn-lang-foot{min-height:44px}
  .eu-lang__menu a{min-height:44px}
}

@media (max-width:560px){
  /* 語言選單收成只有地球 icon；header 的 Sign in 收起（hero 已有登入按鈕） */
  .eu-lang--nav .eu-lang__label,
  .eu-lang--nav .eu-lang__chevron{display:none}
  .eu-lang--nav .eu-btn-ghost{padding:11px;min-width:44px;justify-content:center}
  .eu-nav__signin{display:none}
  .eu-header{padding-top:16px;padding-bottom:16px;gap:12px}
  .eu-logo span{font-size:19px}
  .eu-btn-primary-sm{padding:12px 18px;margin-left:4px}
  .eu-eyebrow{margin-bottom:24px}
  .eu-cta-row .eu-btn-primary,
  .eu-cta-row .eu-btn-outline{flex:1 1 100%;text-align:center}
}