/* 色彩取自 logo：深藍底 #103353（即 --navy-800）、金色 #e5960a（即 --gold）。全部顏色集中在這裡，換色只需改變數。
   金色 --gold 只用於深色背景與裝飾；淺色背景上的金色文字用較深的 --gold-deep 以確保對比度。 */
:root {
  color-scheme: light;
  --navy-950: #071a2e;
  --navy-950-rgb: 7 26 46;
  --navy-900: #0b2540;
  --navy-800: #103353;
  --gold: #e5960a;
  --gold-light: #f4b942;
  --gold-deep: #9a5b00;
  --gold-tint: #f6e9cc;
  --gold-line: #ecd3a0;
  --blue: #1f4f8f;
  --ink: #14213a;
  --muted: #55627a;
  --line: #e2e6ee;
  --soft: #f4f6fa;
  --white: #ffffff;
  --radius: 16px;
  --font: -apple-system, BlinkMacSystemFont, "PingFang HK", "PingFang TC", "Microsoft JhengHei",
          "Noto Sans TC", "Noto Sans CJK TC", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, "Times New Roman", serif;
}
html:lang(zh-Hans) {
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC",
          "Noto Sans CJK SC", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font: 16px/1.75 var(--font);
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
h1, h2, h3, p, ul, ol, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; }

.wrap { width: 100%; max-width: 1120px; margin-inline: auto; padding-inline: 20px; }

.skip {
  position: absolute; left: -999px; top: 8px; z-index: 50;
  background: var(--gold); color: var(--navy-950); padding: 8px 14px; border-radius: 8px; font-weight: 700;
}
.skip:focus { left: 8px; }

a:focus-visible, button:focus-visible {
  outline: 3px solid var(--blue); outline-offset: 3px; border-radius: 6px;
}
.site-header :focus-visible, .hero :focus-visible, .section-dark :focus-visible, .site-footer :focus-visible {
  outline-color: var(--gold-light);
}

/* Header：深色半透明，疊在 hero 上；無需 JS 也能正常顯示 */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 30;
  background: rgb(var(--navy-950-rgb) / .84);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  color: #fff;
  transition: background .3s, box-shadow .3s;
}
.site-header.is-scrolled { background: rgb(var(--navy-950-rgb) / .96); box-shadow: 0 6px 24px rgba(4, 12, 28, .28); }
.bar { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px 28px; padding-block: 12px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-mark { width: auto; height: 46px; flex: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font: 600 21px/1.1 var(--font-serif); letter-spacing: .05em; }
.brand-text small { margin-top: 3px; font-size: 11.5px; letter-spacing: .08em; color: rgba(255, 255, 255, .62); }

.nav { display: flex; align-items: center; flex-wrap: wrap; gap: 4px 26px; }
.nav > a { position: relative; padding: 6px 0; text-decoration: none; font-size: 15px; font-weight: 500; color: rgba(255, 255, 255, .86); }
.nav > a:hover { color: #fff; }
.nav > a:not(.nav-cta)::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 2px; height: 2px; background: var(--gold);
  transform: scaleX(0); transform-origin: left; transition: transform .25s;
}
.nav > a:not(.nav-cta):hover::after { transform: scaleX(1); }
.nav .nav-cta { background: var(--gold); color: var(--navy-950); padding: 8px 20px; border-radius: 999px; font-weight: 700; }
.nav .nav-cta:hover { background: var(--gold-light); color: var(--navy-950); }

.langs { display: inline-flex; padding: 2px; border: 1px solid rgba(255, 255, 255, .28); border-radius: 999px; }
.langs a { padding: 2px 11px; border-radius: 999px; font-size: 13px; line-height: 1.6; text-decoration: none; color: rgba(255, 255, 255, .8); }
.langs a:hover { color: #fff; }
.langs a[aria-current] { background: var(--gold); color: var(--navy-950); font-weight: 700; }

.nav-toggle {
  display: none; align-items: center; justify-content: center; width: 42px; height: 42px;
  border: 1px solid rgba(255, 255, 255, .28); border-radius: 10px; background: transparent; color: #fff; cursor: pointer;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  display: block; width: 18px; height: 2px; background: currentColor; border-radius: 2px;
  transition: transform .25s, background .2s;
}
.nav-toggle span { position: relative; }
.nav-toggle span::before, .nav-toggle span::after { content: ""; position: absolute; left: 0; }
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after { transform: translateY(-6px) rotate(-45deg); }

/* Hero：地平線意象（Novel Horizon）；右側五個節點對應五個服務步驟 */
.hero {
  position: relative; overflow: hidden; color: #fff; padding-block: 136px 160px;
  background:
    radial-gradient(900px 480px at 78% 50%, color-mix(in srgb, var(--gold) 20%, transparent), transparent 70%),
    linear-gradient(180deg, var(--navy-950), var(--navy-900) 58%, var(--navy-800));
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse at 72% 50%, #000 5%, transparent 68%);
  mask-image: radial-gradient(ellipse at 72% 50%, #000 5%, transparent 68%);
}
.hero::after {
  content: ""; position: absolute; left: -12%; right: -12%; bottom: -1px; height: 84px;
  background: var(--white); border-radius: 50% 50% 0 0 / 100% 100% 0 0;
}
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.2fr .8fr; gap: 40px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 12px; font-size: 14px; font-weight: 600; letter-spacing: .14em; color: var(--gold-light); }
.eyebrow::before { content: ""; width: 36px; height: 1px; background: var(--gold); }
h1 { margin-top: 18px; font-size: clamp(30px, 4.4vw, 52px); line-height: 1.3; font-weight: 700; letter-spacing: .02em; }
h1 span { display: block; text-wrap: balance; }
h1 .accent { color: var(--gold-light); }
.lead { margin-top: 22px; max-width: 32em; font-size: 18px; color: rgba(255, 255, 255, .78); }
.actions { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 14px; }
.btn {
  display: inline-flex; align-items: center; text-decoration: none; font-weight: 700; font-size: 16px;
  padding: 13px 30px; border-radius: 999px; border: 1.5px solid transparent;
  transition: transform .2s, background .2s, border-color .2s, color .2s;
}
.btn-primary { background: var(--gold); color: var(--navy-950); }
.btn-primary:hover { background: var(--gold-light); transform: translateY(-2px); }
.btn-ghost { border-color: rgba(255, 255, 255, .4); color: #fff; }
.btn-ghost:hover { border-color: var(--gold-light); color: var(--gold-light); }

.hero-art { position: relative; width: 100%; max-width: 520px; margin-inline: auto; }
.orbit { width: 100%; height: auto; overflow: visible; }
.hero-mark { position: absolute; left: 50%; top: 50%; width: 35%; height: auto; translate: -50% -50%; animation: logo-in 1.4s .3s ease both; }
.orbit .ring { fill: none; stroke: var(--gold-light); stroke-width: 1; }
.orbit .ring-main {
  fill: none; stroke: var(--gold); stroke-width: 1.5; stroke-dasharray: 1446; stroke-dashoffset: 1446;
  transform: rotate(-90deg); transform-origin: 260px 250px; animation: draw 2.6s .3s ease forwards;
}
.orbit .pulse { transform-origin: 260px 250px; animation: pulse 7s ease-in-out infinite; }
.orbit .wp { opacity: 0; transform-box: fill-box; transform-origin: center; animation: pop .6s var(--d, 1s) ease forwards; }
.orbit .wp circle { fill: var(--navy-900); stroke: var(--gold); stroke-width: 1.5; }
.orbit .wp text { fill: var(--gold-light); font: 600 13px var(--font-serif); text-anchor: middle; }
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes pulse { 0%, 100% { transform: scale(1); opacity: .75; } 50% { transform: scale(1.035); opacity: 1; } }
@keyframes pop { from { opacity: 0; transform: scale(.6); } to { opacity: 1; transform: none; } }
@keyframes logo-in { from { opacity: 0; scale: .92; } to { opacity: 1; scale: 1; } }

/* Sections */
.section { padding-block: 100px; }
#services { padding-top: 56px; }
.section-soft { background: var(--soft); }
.section-dark { background: linear-gradient(180deg, var(--navy-900), var(--navy-950)); color: #fff; }
.section-head { margin-bottom: 52px; }
.idx { display: flex; align-items: center; gap: 14px; font: 600 14px/1 var(--font-serif); letter-spacing: .2em; color: var(--gold-deep); }
.idx::after { content: ""; width: 48px; height: 1px; background: currentColor; opacity: .5; }
.section-dark .idx { color: var(--gold-light); }
h2 { margin-top: 14px; font-size: clamp(26px, 3.4vw, 38px); line-height: 1.35; letter-spacing: .02em; color: var(--navy-900); }
.section-dark h2 { color: #fff; }
.section-lead { margin-top: 12px; max-width: 36em; font-size: 17px; color: var(--muted); }
.section-dark .section-lead { color: rgba(255, 255, 255, .72); }

/* 服務卡片：5 張，最後一行置中 */
.cards { display: flex; flex-wrap: wrap; justify-content: center; gap: 22px; }
.card {
  position: relative; overflow: hidden; flex: 0 1 calc((100% - 44px) / 3);
  padding: 30px 28px 34px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  transition: transform .3s, box-shadow .3s, border-color .3s;
}
.card::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  transform: scaleX(0); transform-origin: left; transition: transform .4s;
}
.card:hover { transform: translateY(-6px); box-shadow: 0 18px 40px rgba(12, 33, 64, .12); border-color: var(--gold-line); }
.card:hover::after { transform: scaleX(1); }
.card-no { position: absolute; top: 22px; right: 26px; font: 600 34px/1 var(--font-serif); color: var(--gold-tint); }
.icon {
  display: grid; place-items: center; width: 52px; height: 52px; margin-bottom: 22px; border-radius: 14px;
  background: linear-gradient(135deg, var(--navy-800), var(--navy-900));
}
.icon svg { width: 26px; height: 26px; fill: none; stroke: var(--gold-light); stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.card h3 { font-size: 20px; line-height: 1.4; color: var(--navy-900); }
.card p { margin-top: 8px; color: var(--muted); }

/* 流程：金線隨捲動由左畫到右 */
.steps { position: relative; display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.steps::before, .steps::after { content: ""; position: absolute; top: 27px; left: 10%; right: 10%; height: 2px; }
.steps::before { background: color-mix(in srgb, var(--gold-light) 22%, transparent); }
.steps::after { background: linear-gradient(90deg, var(--gold), var(--gold-light)); transform-origin: left; }
.js .steps::after { transform: scaleX(0); transition: transform 1.8s cubic-bezier(.3, .6, .2, 1) .2s; }
.js .steps.in::after { transform: scaleX(1); }
.step { position: relative; padding-inline: 6px; text-align: center; }
.num {
  position: relative; z-index: 1; display: grid; place-items: center; width: 56px; height: 56px; margin: 0 auto 18px;
  border-radius: 50%; background: var(--navy-950); border: 2px solid var(--gold);
  font: 600 22px/1 var(--font-serif); color: var(--gold-light);
}
.step h3 { font-size: 18px; line-height: 1.4; }
.step p { margin-top: 6px; font-size: 14.5px; color: rgba(255, 255, 255, .7); }
.process-note { margin-top: 48px; text-align: center; text-wrap: balance; font-size: 14px; color: rgba(255, 255, 255, .55); }

/* 關於我們 */
.about { display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; align-items: start; }
.about-body { margin-top: 22px; font-size: 17px; color: var(--muted); }
.principles { display: grid; gap: 16px; }
.principle {
  display: grid; grid-template-columns: 52px 1fr; column-gap: 18px; padding: 22px 26px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
}
.pn { grid-row: span 2; font: 600 28px/1.2 var(--font-serif); color: var(--gold-deep); }
.principle h3 { font-size: 18px; line-height: 1.5; color: var(--navy-900); }
.principle p { color: var(--muted); }

/* 聯絡我們 */
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; align-items: center; }
.contact-card {
  padding: 8px 32px; background: #fff; border: 1px solid var(--line); border-top: 3px solid var(--gold);
  border-radius: var(--radius); box-shadow: 0 14px 40px rgba(12, 33, 64, .08);
}
.contact-card div { display: grid; grid-template-columns: 6.5em 1fr; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.contact-card div:last-child { border-bottom: 0; }
.contact-card dt { font-size: 15px; color: var(--muted); }
.contact-card dd { font-weight: 600; color: var(--navy-900); overflow-wrap: anywhere; }

/* Footer */
.site-footer { padding-block: 52px 44px; background: var(--navy-950); color: rgba(255, 255, 255, .72); font-size: 14.5px; }
.foot-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; color: #fff; }
.foot-brand .brand-mark { height: 56px; }
.foot-brand strong { font: 600 20px/1 var(--font-serif); letter-spacing: .05em; }
.site-footer p + p { margin-top: 2px; }
.site-footer .fine { margin-top: 14px; font-size: 13px; color: rgba(255, 255, 255, .5); }
.site-footer .fine + .fine { margin-top: 2px; }

/* 待填佔位：只供審閱時辨認，上線前須全部清除 */
.ph { background: #fff3b0; color: #5a4500; padding: 0 4px; border-radius: 3px; }

/* 捲動顯示：只在有 JS 時啟用，沒有 JS 時內容照常顯示。用 translate 而非 transform，避免與 hover 的 transform 互相覆蓋 */
.js .reveal { opacity: 0; translate: 0 18px; transition: opacity .7s ease var(--d, 0s), translate .7s ease var(--d, 0s); }
.js .reveal.in { opacity: 1; translate: 0 0; }
.js .card.reveal {
  transition: opacity .7s ease var(--d, 0s), translate .7s ease var(--d, 0s),
              transform .3s, box-shadow .3s, border-color .3s;
}

@media (max-width: 1000px) {
  .card { flex-basis: calc((100% - 22px) / 2); }
}

@media (max-width: 860px) {
  .js .nav-toggle { display: inline-flex; }
  .js .nav {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: stretch; gap: 0; padding: 8px 20px 22px;
    background: rgb(var(--navy-950-rgb) / .98); border-bottom: 1px solid rgba(255, 255, 255, .08);
  }
  .js .nav.open { display: flex; }
  .js .nav > a { padding: 13px 0; border-bottom: 1px solid rgba(255, 255, 255, .08); }
  .js .nav > a:not(.nav-cta)::after { display: none; }
  .js .nav .nav-cta { margin-top: 16px; text-align: center; border-bottom: 0; }
  .js .langs { align-self: flex-start; margin-top: 16px; }

  .hero { padding-block: 112px 120px; }
  .hero-grid { grid-template-columns: 1fr; gap: 28px; }
  .hero-art { max-width: 400px; }
  .section { padding-block: 72px; }
  .section-head { margin-bottom: 36px; }

  .steps { grid-template-columns: 1fr; gap: 28px; }
  .steps::before, .steps::after { top: 28px; bottom: 28px; left: 27px; right: auto; width: 2px; height: auto; }
  .steps::after { transform-origin: top; }
  .js .steps::after { transform: scaleY(0); }
  .js .steps.in::after { transform: scaleY(1); }
  .step { padding: 0 0 0 80px; min-height: 56px; text-align: left; }
  .num { position: absolute; left: 0; top: 0; margin: 0; }
  .step h3 { padding-top: 2px; }

  .about, .contact-grid { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 600px) {
  .card { flex-basis: 100%; }
  .contact-card { padding-inline: 22px; }
  .contact-card div { grid-template-columns: 5.5em 1fr; gap: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .reveal { opacity: 1; translate: 0 0; }
  .js .steps::after { transform: none; }
  .orbit .ring-main { stroke-dashoffset: 0; }
  .orbit .wp { opacity: 1; }
}