.route-concept {
  --reading: "PingFang TC", "Noto Sans TC", system-ui, sans-serif;
  --display: "Songti TC", "Noto Serif TC", serif;
  font-family: var(--reading);
}
.route-c { --ink-route: #163a32; --header-paper: #f6faf0; }
.route-concept .proposal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 57px;
  border: 0;
  padding: 10px clamp(20px,5vw,72px);
  color: var(--ink-route);
  background: var(--header-paper);
}
.proposal-brand {
  display: flex;
  gap: 8px;
  align-items: baseline;
  color: inherit;
  text-decoration: none;
  font: 650 20px/1.2 var(--display);
}
.proposal-brand span { font: 400 12px/1.3 var(--reading); }
.proposal-book {
  color: inherit;
  font: 650 14px/1.4 var(--reading);
  text-underline-offset: 4px;
}
.route-concept #hero h1,
.route-concept #hero h2,
.route-concept #hero h3 { margin: 0; color: inherit; letter-spacing: 0; }
.route-concept #hero a:focus-visible,
.route-concept .proposal-header a:focus-visible { outline: 2px solid currentColor; outline-offset: 3px; }
.route-concept #page-guide a svg {
  flex: 0 0 auto;
  width: 21px;
  height: 21px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.55;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.route-concept #page-guide a { text-decoration: none; }
.route-concept .proposal-original {
  display: grid;
  grid-template-columns: 2fr 1fr;
  align-items: start;
  gap: 40px;
  padding-block: 50px 24px;
}
.route-concept .proposal-original .hero-photo { margin: 0; }
.route-concept .proposal-original .hero-photo img { max-height: 310px; object-fit: contain; }

.contour-cover {
  padding: 38px clamp(22px,7vw,104px) 44px;
  background: #153c35;
  color: #e7f0d9;
}
.contour-cover-inner {
  display: grid;
  grid-template-columns: minmax(0,1fr) minmax(0,1.15fr);
  align-items: center;
  gap: 38px;
  max-width: 1160px;
  margin-inline: auto;
}
.contour-cover .contour-story h1 { font: 650 16px/1.4 var(--reading); color: #c9debe; }
.contour-story .contour-statement { margin: 12px 0; font: 500 clamp(39px,5.25vw,67px)/1.1 var(--display); }
.contour-story p:last-child { max-width: 29ch; margin: 0; color: #d5e3cb; font-size: 16px; line-height: 1.72; }
.contour-choices { min-width: 0; padding: 20px 24px 17px; background: #1d463e; }
.contour-cover .contour-choices h2 { text-align: center; font: 550 27px/1.35 var(--display); }
.contour-field { position: relative; margin-top: 9px; }
.contour-thread { position: absolute; inset: 0 auto 14px 50%; width: 66px; height: calc(100% - 14px); transform: translateX(-50%); }
.contour-pair {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0,1fr) minmax(0,1fr);
  gap: 62px;
  min-height: 57px;
  align-items: center;
}
.contour-link {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 7px;
  min-height: 43px;
  color: #e7f0d9;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.28;
}
.contour-pair a:first-child { flex-direction: row-reverse; text-align: right; }
.contour-pair a::after {
  content: "";
  position: absolute;
  top: 50%;
  left: -23px;
  width: 18px;
  border-top: 1px solid #93b69d;
}
.contour-pair a:first-child::after { right: -23px; left: auto; }
.contour-pair a:hover span { text-decoration: underline; text-underline-offset: 4px; }
.contour-end { position: relative; display: flex; justify-content: center; padding-top: 6px; }
.contour-end a { padding-inline: 13px; color: #163a32; background: #e7f0d9; }

@media (max-width: 760px) {
  .route-concept .proposal-header { min-height: 51px; padding-inline: 17px; }
  .proposal-brand { font-size: 17px; }
  .route-concept .proposal-original { grid-template-columns: 1fr; gap: 15px; padding-block: 36px 18px; }
  .contour-cover { padding: 19px 14px 19px; }
  .contour-cover-inner { display: block; }
  .contour-story { padding: 0 5px 14px; }
  .contour-cover .contour-story h1 { font-size: 14px; }
  .contour-story .contour-statement { margin: 6px 0 8px; font-size: clamp(28px,8.6vw,40px); }
  .contour-statement br { display: none; }
  .contour-story p:last-child { font-size: 13px; max-width: none; }
  .contour-choices { padding: 12px 10px; }
  .contour-cover .contour-choices h2 { font-size: 22px; }
  .contour-field { margin-top: 5px; }
  .contour-thread { width: 42px; }
  .contour-pair { gap: 38px; min-height: 47px; }
  .contour-link { font-size: 13px; gap: 4px; min-height: 40px; }
  .route-concept #page-guide .contour-link svg { width: 17px; height: 17px; }
  .contour-pair a::after { left: -14px; width: 11px; }
  .contour-pair a:first-child::after { right: -14px; left: auto; }
  .contour-end { padding-top: 3px; }
}

@media (max-width: 760px) {
  .route-c .contour-cover { padding-inline: 12px; }
  .route-c .contour-choices { padding: 15px 8px 14px; }
  .route-c .contour-field { margin-top: 8px; }
  .route-c .contour-thread { width: 33px; }
  .route-c .contour-pair {
    gap: 27px;
    min-height: 60px;
  }

  .route-c #page-guide .contour-link {
    gap: 6px;
    min-height: 54px;
    padding: 7px 2px;
    font-size: clamp(16px, 4.4vw, 17px);
    font-weight: 650;
    line-height: 1.27;
  }
  .route-c #page-guide .contour-link span { min-width: 0; }
  .route-c #page-guide .contour-link svg {
    width: 19px;
    height: 19px;
  }

  .route-c .contour-pair a::after { left: -10px; width: 8px; }
  .route-c .contour-pair a:first-child::after { right: -10px; left: auto; }
  .route-c .contour-pair a:active { background: #2c594d; }
  .route-c .contour-end { padding-top: 9px; }
  .route-c #page-guide .contour-end a {
    justify-content: center;
    width: min(100%, 220px);
    min-height: 56px;
    padding-inline: 14px;
  }
}