:root {
  --ink: #17233f;
  --muted: #64708a;
  --line: #dfe5ef;
  --blue: #1748d3;
  --blue-soft: #eef3ff;
  --paper: #ffffff;
  --wash: #f6f8fc;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family:
    "Noto Sans TC", Inter, "PingFang TC", "Microsoft JhengHei",
    sans-serif;
  line-height: 1.7;
}

a {
  color: inherit;
  text-decoration: none;
}

a:focus-visible {
  outline: 3px solid rgba(23, 72, 211, 0.28);
  outline-offset: 5px;
}

.hero {
  position: relative;
  max-width: 1320px;
  min-height: min(820px, calc(100vh - 72px));
  margin: 0 auto;
  padding: clamp(80px, 12vh, 128px) 40px 70px;
  display: grid;
  grid-template-columns: 1fr;
  align-items: start;
  gap: 60px;
}

.eyebrow,
.section-label {
  margin: 0;
  color: var(--blue);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* 首頁 Hero 主標：最大字級由 110px 降至 72px */
h1 {
  max-width: 950px;
  margin: 20px 0 0;
  font-size: clamp(48px, 6vw, 72px);
  line-height: 0.96;
  letter-spacing: -0.07em;
  text-wrap: balance;
}

.hero h1 em {
  color: var(--blue);
  font-style: normal;
}

.hero-intro {
  max-width: 620px;
  margin: 40px 0 0;
  color: var(--muted);
  font-size: clamp(17px, 1.55vw, 21px);
}

.hero-side {
  align-self: end;
  padding: 28px 0 8px;
  border-top: 1px solid rgba(23, 35, 63, 0.28);
}

.hero-side p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.hero-side strong {
  display: block;
  margin-bottom: 14px;
  color: var(--ink);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* 桌機版：Hero 右側區塊移到大標題下方，文字靠左與標題對齊、箭頭靠右；手機版維持原本堆疊樣式 */
@media (min-width: 901px) {
  .hero-side {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    column-gap: 40px;
  }

  .hero-side strong {
    grid-column: 1;
    grid-row: 1;
    margin-bottom: 10px;
  }

  .hero-side p {
    grid-column: 1;
    grid-row: 2;
    max-width: 520px;
  }

  .hero-side .hero-link {
    grid-column: 2;
    grid-row: 1 / 3;
    justify-self: end;
    margin-top: 0;
  }
}

.hero-link {
  width: 72px;
  height: 72px;
  margin-top: 30px;
  display: grid;
  place-items: center;
  color: white;
  background: var(--blue);
  border-radius: 50%;
  font-size: 22px;
}

.hero-link span,
.project-link span {
  display: inline-block;
  transition: transform 180ms ease;
}

.hero-link:hover span,
.project-card:hover .project-link span {
  transform: translate(3px, -3px);
}

.work {
  padding: 120px 5vw 150px;
  background: var(--wash);
}

.section-heading {
  max-width: 1200px;
  margin: 0 auto 52px;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 32px;
}

/* Selected Work 區塊主標題：最大字級由 64px 降至 44px */
.section-heading h2 {
  margin: 16px 0 0;
  color: var(--ink);
  font-size: clamp(32px, 4vw, 44px);
  line-height: 1.15;
  letter-spacing: -0.045em;
}

.section-note {
  max-width: 390px;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  white-space: nowrap;
}

.project-list {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  gap: 110px;
}

.coming-soon {
  max-width: 1200px;
  margin: 90px auto 0;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-align: center;
}

.project-card {
  display: grid;
  grid-template-columns: minmax(300px, 0.72fr) minmax(0, 1.28fr);
  align-items: center;
  min-height: 500px;
  overflow: visible;
  color: var(--ink);
  background: transparent;
  transition:
    transform 220ms ease,
    box-shadow 220ms ease;
}

.project-card:nth-child(even) {
  grid-template-columns: minmax(0, 1.28fr) minmax(300px, 0.72fr);
}

.project-card:nth-child(even) .project-visual {
  order: 2;
}

.project-card + .project-card {
  padding-top: 110px;
  border-top: 1px solid var(--line);
}

.project-card:hover {
  transform: translateY(-3px);
}

.project-visual {
  min-height: 490px;
  padding: clamp(26px, 4vw, 56px);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--blue-soft);
  border-radius: 2px;
}

.project-visual.airline {
  background: #edf1f8;
}

.visual-placeholder {
  width: 100%;
  min-height: 320px;
  padding: 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--blue);
  background:
    linear-gradient(135deg, rgba(23, 72, 211, 0.05), rgba(23, 72, 211, 0.015)),
    repeating-linear-gradient(
      45deg,
      transparent,
      transparent 16px,
      rgba(23, 72, 211, 0.025) 16px,
      rgba(23, 72, 211, 0.025) 32px
    );
  border: 1.5px dashed #9bb2ee;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
  text-align: center;
}

.visual-placeholder small {
  max-width: 240px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 400;
}

.project-visual img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid rgba(23, 35, 63, 0.1);
  border-radius: 10px;
  box-shadow: 0 18px 40px rgba(23, 35, 63, 0.1);
  transition: transform 280ms ease;
}

.project-card:hover .project-visual img {
  transform: scale(1.015);
}

.project-copy {
  padding: clamp(40px, 6vw, 84px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.project-index {
  margin: 0 0 30px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

/* 專案卡片標題：調整為 clamp(30px, 3.8vw, 42px) */
.project-copy h3 {
  margin: 0;
  font-size: clamp(30px, 3.8vw, 42px);
  line-height: 1.18;
  letter-spacing: -0.04em;
}

.project-description {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 16px;
}

.project-tags {
  margin: 30px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

.project-tags li {
  padding: 6px 10px;
  color: var(--muted);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 11px;
}

.project-link {
  margin-top: 44px;
  color: var(--blue);
  font-size: 14px;
  font-weight: 700;
}

/* Additional Work：卡片式次要作品區，視覺與 .project-card 呼應（同樣有 hover、tag），
   但用較小尺寸的多欄卡片呈現，權重明顯低於上方的大型主案例卡。
   .additional-grid 改用 CSS Grid 排版（取代先前的 flex-wrap），避免在
   flex-direction: column 的斷點下 flex-basis 誤套用到高度軸，
   導致卡片高度計算錯誤、內文被裁切。 */
.additional-work {
  max-width: 1200px;
  margin: 90px auto 0;
  padding-top: 56px;
  border-top: 1px solid var(--line);
}

.additional-work-label {
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.additional-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 360px));
  gap: 32px;
}

.additional-card {
  width: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  color: var(--ink);
  background: var(--paper);
  border-radius: 20px;
  box-shadow: 0 18px 40px rgba(23, 35, 63, 0.08);
  transition:
    transform 220ms ease,
    box-shadow 220ms ease;
}

.additional-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 22px 48px rgba(23, 35, 63, 0.14);
}

/* 圖片容器改用 aspect-ratio 決定高度，不再依賴 min-height（不確定高度）
   讓 img 的 height: 100% 有明確的容器高度可以參照，避免手機瀏覽器算錯高度。 */
.additional-visual {
  aspect-ratio: 16 / 10;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--blue-soft);
}

.additional-visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 280ms ease;
}

.additional-card:hover .additional-visual img {
  transform: scale(1.03);
}

.additional-visual .visual-placeholder.small {
  width: 100%;
  min-height: 0;
  padding: 16px;
  border-radius: 10px;
  font-size: 12px;
}

.additional-visual .visual-placeholder.small small {
  font-size: 10.5px;
}

.additional-copy {
  padding: 28px 24px 30px;
}

.additional-index {
  margin: 0;
  color: var(--blue);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.additional-copy h3 {
  margin: 14px 0 0;
  font-size: 21px;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

/* 沿用主案例卡的 .project-tags／.project-link 樣式，僅微調間距以配合較小的卡片、
   維持元素間的呼吸感；卡片本身背景已是白色，tag 底色改用 --wash 與白色卡片區隔 */
.additional-copy .project-tags {
  margin-top: 26px;
}

.additional-copy .project-tags li {
  background: var(--wash);
}

.additional-copy .project-link {
  margin-top: 28px;
}

.additional-card:hover .project-link span {
  transform: translate(3px, -3px);
}

.about {
  max-width: 1320px;
  margin: 0 auto;
  padding: 110px 40px 126px;
  display: grid;
  grid-template-columns: 0.45fr 1.55fr;
  gap: clamp(48px, 10vw, 140px);
}

.about h2 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(38px, 4.5vw, 58px);
  line-height: 1.2;
  letter-spacing: -0.045em;
  white-space: nowrap;
}

.about-intro {
  max-width: 760px;
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.about-details {
  grid-column: 1 / -1;
  margin-top: 18px;
  border-top: 1px solid var(--line);
}

.about-group {
  padding: 30px 0 32px;
  display: grid;
  grid-template-columns: 0.45fr 1.55fr;
  gap: clamp(48px, 10vw, 140px);
  border-bottom: 1px solid var(--line);
}

.about-group h3 {
  margin: 0;
  color: var(--ink);
  font-size: 15px;
  line-height: 1.5;
}

.about-group h3 span {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
}

.about-group ul {
  margin: 0;
  padding-left: 0;
  list-style: none;
  color: var(--muted);
}

.about-group li {
  position: relative;
  padding-left: 14px;
  font-size: 15px;
  line-height: 1.75;
}

.about-group li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--muted);
}

.about-group li + li {
  margin-top: 8px;
}

.about-group strong {
  color: var(--ink);
  font-weight: 700;
}

.contact {
  padding: 100px 5vw 48px;
  color: white;
  background: var(--ink);
}

.contact-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.contact .section-label {
  color: #91abf8;
}

/* Contact 標題：最大字級由 76px 降至 52px */
.contact h2 {
  max-width: 900px;
  margin: 20px 0 0;
  font-size: clamp(36px, 4.5vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.05em;
}

.contact-copy {
  max-width: 600px;
  margin: 28px 0 0;
  color: #bdc7dc;
  font-size: 17px;
}

.contact-links {
  margin-top: 50px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px 32px;
}

.contact-links a {
  color: white;
  border-bottom: 1px solid #64708a;
  font-size: 15px;
}

.contact-links a:hover {
  color: #91abf8;
  border-color: #91abf8;
}

.footer-line {
  margin-top: 100px;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  color: #96a2bb;
  border-top: 1px solid #34405c;
  font-size: 11px;
}

@media (max-width: 900px) {
  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
  }

  .section-heading {
    align-items: start;
    flex-direction: column;
  }

  .project-card {
    grid-template-columns: 1fr;
  }

  .project-card:nth-child(even) {
    grid-template-columns: 1fr;
  }

  .project-card:nth-child(even) .project-visual {
    order: initial;
  }

  .project-copy {
    min-height: 390px;
  }

  .additional-work {
    margin-top: 70px;
    padding-top: 44px;
  }

  .additional-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .about {
    grid-template-columns: 1fr;
  }

  .about-group {
    grid-template-columns: 1fr;
    gap: 18px;
  }
}

@media (max-width: 640px) {
  .hero {
    padding: 76px 20px 68px;
  }

  /* 手機版首頁 Hero 主標：由 52px 降至 42px */
  h1 {
    font-size: 42px;
  }

  .work {
    padding: 76px 20px 84px;
  }

  .section-heading {
    margin-bottom: 36px;
  }

  .section-note {
    white-space: normal;
  }

  .project-card {
    min-height: 0;
  }

  .project-card + .project-card {
    padding-top: 70px;
  }

  .project-visual {
    min-height: 280px;
    padding: 24px;
  }

  .project-copy {
    min-height: 360px;
    padding: 34px 28px;
  }

  .additional-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .additional-card {
    width: 100%;
    max-width: none;
    min-width: 0;
  }

  .additional-visual {
    aspect-ratio: 4 / 3;
  }

  .additional-copy {
    padding: 24px 20px 26px;
  }

  .about {
    padding: 84px 20px;
  }

  .contact {
    padding: 76px 20px 34px;
  }

  .footer-line {
    margin-top: 72px;
    flex-direction: column;
    gap: 6px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}