/* 微風農場 介紹網站
   視覺語言沿用遊戲本身：木頭招牌、牛皮紙種子包、奶油色的紙。標題用 justfont 粉圓（Huninn），圓圓的、跟遊戲的 Q 版畫風一致；
   內文用 Noto Sans TC。整頁只有一個大場面：「抬頭看看」那一段從田地一路長到雲上 */
:root {
  --wood: #a8703f;
  --wood-dark: #5c3a1e;
  --wood-light: #d9a668;
  --kraft: #e6c993;
  --cream: #fbf1dc;
  --paper: #fffaef;
  --ink: #3a2a1a;
  --ink-soft: #6a5a45;
  --leaf: #4c9a3c;
  --leaf-dark: #2f6b2f;
  --leaf-light: #8cc96f;
  --coin: #f2b33d;
  --stamp: #c4412f;
  --sky-high: #74bdf0;
  --sky: #9fd4f5;         /* 跟城堡截圖的天空同色，圖片邊緣才融得進去 */
  --sky-ink: #1f4a72;
  --cloud-ground: #e5e6e6; /* 截圖裡雲地的顏色 */
  --font-body: 'Noto Sans TC', 'PingFang TC', 'Microsoft JhengHei', system-ui, sans-serif;
  --font-display: 'Huninn', 'Noto Sans TC', 'PingFang TC', 'Microsoft JhengHei', sans-serif;
  /* 紙張纖維：很淡的雜訊，讓奶油色的底不是一塊死平的顏色 */
  --grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.36 0 0 0 0 0.23 0 0 0 0 0.12 0 0 0 0.07 0'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink);
  background: var(--grain), var(--cream);
  line-height: 1.75;
  overflow-x: clip;
  -webkit-text-size-adjust: 100%;
}
img { max-width: 100%; height: auto; display: block; }
h1, h2 { font-family: var(--font-display); font-weight: 400; color: var(--wood-dark); margin: 0; line-height: 1.25; }
p { margin: 0; }
a { color: inherit; }

/* ---------- 按鈕：沿用遊戲的木頭按鈕 ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-display);
  text-decoration: none;
  background: linear-gradient(180deg, var(--wood-light), var(--wood));
  color: var(--paper);
  border: 3px solid var(--wood-dark);
  border-radius: 999px;
  box-shadow: 0 4px 0 var(--wood-dark);
  padding: 9px 22px 8px;
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.2);
  transition: transform 0.12s, box-shadow 0.12s;
}
.btn:active { transform: translateY(3px); box-shadow: 0 1px 0 var(--wood-dark); }
.btn:focus-visible { outline: 3px solid var(--leaf); outline-offset: 3px; }
.btn-small { padding: 6px 18px 5px; font-size: 0.98rem; }
.btn-cta {
  background: linear-gradient(180deg, #74c95c, var(--leaf));
  border-color: var(--leaf-dark);
  box-shadow: 0 5px 0 var(--leaf-dark), 0 12px 22px rgba(47, 107, 47, 0.25);
  font-size: 1.3rem;
  padding: 13px 34px 12px;
}
.btn-cta:active { box-shadow: 0 2px 0 var(--leaf-dark); }

/* ---------- 導覽列 ---------- */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(251, 241, 220, 0.9);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 2px solid rgba(92, 58, 30, 0.55);
}
.nav-in {
  max-width: 1120px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 20px;
}
.wordmark {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--wood-dark);
  text-decoration: none;
}
.wordmark img { border-radius: 7px; box-shadow: 0 0 0 2px var(--wood-dark); }
.wordmark:focus-visible { outline: 3px solid var(--leaf); outline-offset: 4px; border-radius: 6px; }

/* ---------- 首屏：天空＋山坡，像一張繪本的扉頁 ---------- */
.hero {
  position: relative;
  background:
    radial-gradient(ellipse 60% 50% at 78% 12%, rgba(255, 244, 196, 0.75), transparent 70%),
    linear-gradient(180deg, var(--sky-high) 0%, #b9e2f8 55%, #e3f4fb 100%);
  padding: 64px 20px 0;
}
.hero-in {
  max-width: 1120px; margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(280px, 5fr) 7fr;
  gap: 48px;
  align-items: center;
  padding-bottom: 96px;
}
.hero h1 {
  font-size: clamp(3.2rem, 7.4vw, 5.6rem);
  letter-spacing: 0.04em;
  color: var(--wood-dark);
  text-shadow: 0 3px 0 rgba(255, 250, 239, 0.85);
}
.tagline {
  margin: 18px 0 30px;
  font-size: clamp(1.1rem, 1.9vw, 1.3rem);
  font-weight: 500;
  line-height: 1.7;
}
.hint { margin-top: 16px; font-size: 0.9rem; color: var(--ink-soft); line-height: 1.7; }
/* 截圖裝在木框裡，像掛在農舍牆上的一扇窗 */
.hero-frame {
  margin: 0;
  background: linear-gradient(160deg, #c48a52, var(--wood) 60%, #8f5d33);
  border: 3px solid var(--wood-dark);
  border-radius: 18px;
  padding: 10px;
  box-shadow:
    inset 0 2px 0 rgba(255, 230, 190, 0.45),
    0 10px 0 rgba(92, 58, 30, 0.28),
    0 26px 40px -12px rgba(31, 74, 114, 0.45);
  transform: rotate(1.4deg);
}
.hero-frame img { border-radius: 10px; box-shadow: 0 0 0 2px rgba(58, 42, 26, 0.6); }
.hills {
  position: absolute; left: 0; right: 0; bottom: -1px;
  width: 100%; height: clamp(56px, 9vw, 120px);
  display: block;
}

/* 「新」：橡皮章，告示板和種子包共用一種語言 */
.new-tag, .stamp {
  display: inline-grid; place-items: center;
  font-family: var(--font-display);
  color: var(--stamp);
  border: 2px solid var(--stamp);
  border-radius: 50%;
  line-height: 1;
  transform: rotate(-12deg);
  opacity: 0.88;
}
.new-tag { width: 26px; height: 26px; font-size: 0.82rem; margin-left: 8px; vertical-align: 1px; }

/* ---------- 告示板 ---------- */
.board-section { padding: 72px 20px 80px; display: flex; justify-content: center; }
.board {
  position: relative;
  max-width: 760px; width: 100%;
  /* 木紋：幾條很淡的橫向紋理疊在木頭漸層上 */
  background:
    repeating-linear-gradient(178deg, rgba(92, 58, 30, 0.09) 0 2px, transparent 2px 19px),
    repeating-linear-gradient(181deg, rgba(255, 220, 170, 0.08) 0 1px, transparent 1px 11px),
    linear-gradient(180deg, #c58d55, var(--wood));
  border: 3px solid var(--wood-dark);
  border-radius: 16px;
  padding: 30px clamp(18px, 5vw, 44px) 34px;
  box-shadow: inset 0 2px 0 rgba(255, 230, 190, 0.4), 0 8px 0 var(--wood-dark), 0 24px 40px -18px rgba(58, 42, 26, 0.6);
}
.nail {
  position: absolute; width: 12px; height: 12px; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #e8e2d6, #8a8277 70%);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.45);
}
.nail-tl { top: 12px; left: 12px; } .nail-tr { top: 12px; right: 12px; }
.nail-bl { bottom: 12px; left: 12px; } .nail-br { bottom: 12px; right: 12px; }
.board h2 {
  color: var(--paper);
  font-size: 1.75rem;
  text-align: center;
  margin-bottom: 20px;
  text-shadow: 0 2px 0 var(--wood-dark);
}
.board-list {
  list-style: none; margin: 0;
  background: var(--grain), var(--paper);
  border-radius: 6px;
  padding: 10px clamp(16px, 4vw, 28px);
  box-shadow: 0 2px 0 rgba(92, 58, 30, 0.35);
  transform: rotate(-0.4deg);
}
.board-list li {
  padding: 13px 0 13px 28px;
  position: relative;
  border-bottom: 1px dashed rgba(92, 58, 30, 0.25);
}
.board-list li:last-child { border-bottom: none; }
.board-list li::before {
  content: '🌱';
  position: absolute; left: 0; top: 13px;
  font-size: 0.9rem;
}

/* ---------- 相片：用紙膠帶貼在紙上 ---------- */
.gallery {
  max-width: 1120px; margin: 0 auto;
  padding: 8px 20px 96px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 40px 32px;
  align-items: start;
}
.photo {
  margin: 0;
  position: relative;
  background: var(--paper);
  padding: 10px 10px 14px;
  box-shadow: 0 1px 2px rgba(58, 42, 26, 0.18), 0 14px 26px -12px rgba(58, 42, 26, 0.45);
}
.photo::before {
  content: '';
  position: absolute; top: -12px; left: 50%;
  width: 92px; height: 26px;
  transform: translateX(-50%) rotate(-3deg);
  background: rgba(242, 179, 61, 0.55);
  background-image: repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.25) 0 6px, transparent 6px 12px);
  box-shadow: 0 1px 1px rgba(58, 42, 26, 0.15);
}
.photo-1 { transform: rotate(-2.2deg); }
.photo-2 { transform: rotate(1.2deg); margin-top: 28px; }
.photo-2::before { background-color: rgba(140, 201, 111, 0.6); transform: translateX(-50%) rotate(2deg); }
.photo-3 { transform: rotate(2.4deg); }
.photo-3::before { background-color: rgba(159, 212, 245, 0.7); }
.photo img { aspect-ratio: 16 / 10; object-fit: cover; width: 100%; }
.photo figcaption {
  text-align: center;
  font-family: var(--font-display);
  font-size: 0.98rem;
  color: var(--ink-soft);
  margin-top: 10px;
}

/* ---------- 種子包：點一下撕開，露出一句提示 ---------- */
.packets-section { max-width: 1000px; margin: 0 auto; padding: 0 20px 104px; }
.packets-section h2, .steps-section h2, .faq-section h2 { text-align: center; font-size: clamp(1.7rem, 3.4vw, 2.1rem); }
.packets-lead { text-align: center; color: var(--ink-soft); margin: 12px auto 44px; max-width: 30em; }
.packets {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr)); /* 9 包剛好三排 */
  gap: 32px 26px;
  align-items: start; /* 撕開一包時，同一排其他包維持原本高度 */
  max-width: 880px; margin: 0 auto;
}
.packet {
  position: relative;
  display: flex; flex-direction: column; align-items: center;
  gap: 8px;
  padding: 34px 16px 18px;
  font: inherit; color: var(--ink); text-align: center;
  cursor: pointer;
  background:
    repeating-linear-gradient(115deg, rgba(92, 58, 30, 0.05) 0 2px, transparent 2px 7px),
    linear-gradient(180deg, #f2ddb1, var(--kraft));
  border: 3px solid var(--wood-dark);
  border-radius: 4px 4px 12px 12px;
  box-shadow: 0 6px 0 rgba(92, 58, 30, 0.35);
  transition: transform 0.15s;
}
/* 封口：上緣一條摺好的紙邊，撕開時往後掀 */
.packet::before {
  content: '';
  position: absolute; left: -3px; right: -3px; top: -3px;
  height: 24px;
  background: linear-gradient(180deg, #d4b07a, #c79f66);
  border: 3px solid var(--wood-dark);
  border-radius: 4px 4px 0 0;
  transform-origin: left bottom;
  transition: transform 0.35s ease, opacity 0.35s ease;
}
/* 撕線：封口下面的虛線 */
.packet::after {
  content: '';
  position: absolute; left: 10px; right: 10px; top: 26px;
  border-top: 2px dashed rgba(92, 58, 30, 0.45);
}
.packet:hover { transform: translateY(-3px); }
.packet:focus-visible { outline: 3px solid var(--leaf); outline-offset: 4px; }
.packet-window {
  display: grid; place-items: center;
  width: 78px; height: 78px; margin-top: 6px;
  font-size: 2.3rem;
  background: var(--paper);
  border: 3px solid var(--wood-dark);
  border-radius: 50%;
  box-shadow: inset 0 0 0 5px rgba(242, 179, 61, 0.32);
}
.packet-name { font-family: var(--font-display); font-size: 1.16rem; color: var(--wood-dark); line-height: 1.4; }
.packet-tear { font-size: 0.8rem; color: var(--ink-soft); }
.packet-hint {
  display: block;
  margin-top: 6px;
  padding: 10px 12px;
  background: var(--paper);
  border-radius: 8px;
  font-size: 0.95rem; line-height: 1.7;
  text-align: left;
  box-shadow: inset 0 0 0 2px rgba(92, 58, 30, 0.12);
}
/* 提示設了 display:block，會蓋過瀏覽器內建的 [hidden]，要再明確隱藏一次，不然還沒撕開就看得到 */
.packet-hint[hidden] { display: none; }
.packet[aria-expanded="true"]::before { transform: rotate(-5deg) translate(-2px, -8px); opacity: 0.85; }
.packet[aria-expanded="true"] { background: linear-gradient(180deg, #f6e6c4, #ecd5a8); }
.stamp {
  position: absolute; top: 34px; right: 12px; z-index: 1;
  width: 34px; height: 34px;
  font-size: 1rem;
  background: rgba(255, 250, 239, 0.55);
}

/* ---------- 抬頭看看：整頁唯一的大場面，從田地長到雲上 ---------- */
/* 上半是天空（跟城堡截圖的天空同色），截圖整片橫跨畫面，下半接截圖裡的雲地顏色，再用雲堤接回奶油色的紙 */
.sky {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--sky-high) 0, var(--sky) 300px, var(--sky) 100%);
  padding-top: 96px;
  color: var(--sky-ink);
}
.sky-in { position: relative; z-index: 2; }
.sky-head { max-width: 980px; margin: 0 auto; padding: 0 20px; text-align: center; }
.sky h2 {
  font-size: clamp(2.6rem, 7vw, 4.6rem);
  color: var(--sky-ink);
  letter-spacing: 0.06em;
  text-shadow: 0 3px 0 rgba(255, 255, 255, 0.55);
}
.sky-lead { margin-top: 12px; font-size: clamp(1.1rem, 2vw, 1.3rem); font-weight: 500; }
.sky-view { margin: 8px 0 0; position: relative; background: linear-gradient(180deg, transparent 50%, var(--cloud-ground) 50%); }
.sky-view img {
  width: 100%;
  height: clamp(300px, 46vw, 660px);
  object-fit: cover;
  object-position: 50% 62%;
  /* 上緣淡進同色的天空，下緣淡進同色的雲地，整張圖看不出邊界 */
  -webkit-mask-image: linear-gradient(180deg, transparent 0, #000 18%, #000 84%, transparent 100%);
          mask-image: linear-gradient(180deg, transparent 0, #000 18%, #000 84%, transparent 100%);
}
.sky-ground { background: linear-gradient(180deg, var(--cloud-ground) 0, #eef0f1 70%, var(--cream) 100%); margin-top: -2px; }
.sky-copy { max-width: 32em; margin: 0 auto; padding: 4px 20px 40px; text-align: center; }
.sky-copy p { margin-top: 10px; font-size: 1.04rem; }
.sky-copy .sky-aside { font-family: var(--font-display); color: #4f7699; font-size: 0.98rem; margin-top: 24px; }
/* 藤蔓：從畫面左下角一路爬上天，經過雲層 */
.vine {
  position: absolute; z-index: 3;
  left: max(8px, calc(50% - 640px)); bottom: 30px;
  width: clamp(90px, 13vw, 170px); height: calc(100% - 50px);
  overflow: visible;
  pointer-events: none;
}
.vine-stem { fill: none; stroke: #3f9a3a; stroke-width: 11; stroke-linecap: round; }
.vine-tendril { fill: none; stroke: #4fae46; stroke-width: 3; stroke-linecap: round; }
.vine-leaf { fill: #5cb85c; }
.vine-leaf.alt { fill: #49a447; }
/* 慢慢飄的雲：整頁唯一自己會動的東西，只在標題上方的天空 */
.sky-clouds span {
  position: absolute; z-index: 0;
  width: 220px; height: 54px; border-radius: 60px;
  background: rgba(255, 255, 255, 0.85);
  box-shadow: 40px -18px 0 -4px rgba(255, 255, 255, 0.85), 100px -8px 0 2px rgba(255, 255, 255, 0.85);
  animation: drift 70s linear infinite;
}
.sky-clouds span:nth-child(1) { top: 36px; left: -260px; }
.sky-clouds span:nth-child(2) { top: 14px; left: -260px; transform: scale(0.6); animation-duration: 100s; animation-delay: -45s; opacity: 0.75; }
@keyframes drift { to { translate: calc(100vw + 520px) 0; } }

/* ---------- 怎麼開始 ---------- */
.steps-section { max-width: 720px; margin: 0 auto; padding: 72px 24px 88px; }
.steps-section h2 { margin-bottom: 38px; }
.steps { list-style: none; margin: 0; padding: 0; }
.steps li {
  display: flex; align-items: flex-start; gap: 18px;
  padding: 0 0 32px 20px;
  border-left: 3px dashed var(--wood);
  position: relative;
  margin-left: 20px;
}
.steps li:last-child { padding-bottom: 4px; border-left-color: transparent; }
.step-num {
  flex: none;
  width: 40px; height: 40px;
  display: grid; place-items: center;
  background: var(--wood);
  border: 3px solid var(--wood-dark);
  border-radius: 50%;
  color: var(--paper);
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin-left: -42px;
  box-shadow: 0 3px 0 var(--wood-dark);
}
.steps li div b { font-family: var(--font-display); font-weight: 400; font-size: 1.2rem; color: var(--wood-dark); }
.steps li div p { margin-top: 2px; color: var(--ink-soft); }

/* ---------- 常見問題 ---------- */
.faq-section { max-width: 720px; margin: 0 auto; padding: 0 24px 96px; }
.faq-section h2 { margin-bottom: 24px; }
.faq-section details {
  background: var(--paper);
  border: 2px solid rgba(92, 58, 30, 0.7);
  border-radius: 12px;
  margin-bottom: 12px;
  box-shadow: 0 3px 0 rgba(92, 58, 30, 0.22);
}
.faq-section summary {
  cursor: pointer;
  list-style: none;
  padding: 14px 48px 14px 18px;
  font-weight: 700; color: var(--wood-dark);
  position: relative;
}
.faq-section summary::-webkit-details-marker { display: none; }
.faq-section summary::after {
  content: '';
  position: absolute; right: 20px; top: 50%;
  width: 9px; height: 9px;
  border-right: 3px solid var(--wood); border-bottom: 3px solid var(--wood);
  transform: translateY(-70%) rotate(45deg);
  transition: transform 0.2s;
}
.faq-section details[open] summary::after { transform: translateY(-30%) rotate(-135deg); }
.faq-section summary:focus-visible { outline: 3px solid var(--leaf); outline-offset: 2px; border-radius: 10px; }
.faq-section details p { padding: 0 18px 16px; color: var(--ink-soft); }

/* ---------- 頁尾 ---------- */
.site-footer {
  background:
    repeating-linear-gradient(178deg, rgba(0, 0, 0, 0.12) 0 2px, transparent 2px 17px),
    var(--wood-dark);
  color: var(--cream);
  text-align: center;
  padding: 32px 20px 38px;
  font-size: 0.88rem;
  border-top: 4px solid #4a2e17;
}
.site-footer p { margin: 4px 0; opacity: 0.92; }
.site-footer .tech { opacity: 0.68; font-size: 0.82rem; }

/* ---------- 手機 ---------- */
@media (max-width: 860px) {
  .gallery { grid-template-columns: 1fr; max-width: 460px; gap: 44px; }
  .photo-2 { margin-top: 0; }
}
@media (max-width: 760px) {
  .hero { padding-top: 32px; }
  .hero-in { grid-template-columns: 1fr; gap: 28px; text-align: center; padding-bottom: 72px; }
  .hero-frame { transform: rotate(-1deg); order: -1; padding: 7px; border-radius: 14px; }
  .tagline { margin: 12px 0 24px; }
  .board-section { padding: 52px 16px 64px; }
  .packets-section { padding: 0 16px 88px; }
  /* 手機：種子包改成一包一列、橫著放（左邊小窗、右邊名稱），撕開時提示接在下面——
     不會有落單的一包，撕開時其他包也不會跳位置 */
  .packets { grid-template-columns: 1fr; gap: 16px; max-width: 460px; }
  .packet {
    display: grid;
    grid-template-columns: 60px 1fr;
    grid-template-areas: "win name" "win tear" "hint hint";
    column-gap: 16px; row-gap: 0;
    align-items: center;
    text-align: left;
    padding: 32px 52px 14px 16px;
  }
  .packet-window { grid-area: win; width: 60px; height: 60px; margin-top: 0; font-size: 1.8rem; }
  .packet-name { grid-area: name; align-self: end; font-size: 1.1rem; }
  .packet-tear { grid-area: tear; align-self: start; }
  .packet-hint { grid-area: hint; margin: 12px -36px 0 0; }
  .stamp { top: 40px; right: 14px; width: 30px; height: 30px; font-size: 0.9rem; }
  /* 橫的種子包比較寬，封口掀的角度小一點，不然右端會翹到上一包 */
  .packet[aria-expanded="true"]::before { transform: rotate(-1.6deg) translate(-2px, -6px); }
  .sky { padding-top: 64px; }
  .sky-head { padding: 0 20px; }
  .sky-view img { object-position: 50% 70%; }
  .sky-copy { padding: 0 20px 32px 64px; text-align: left; }
  .vine { left: 0; width: 64px; bottom: 20px; height: calc(100% - 40px); }
  .steps-section { padding: 56px 20px 72px; }
  .steps li { margin-left: 12px; }
  .faq-section { padding: 0 16px 80px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
  .sky-clouds { display: none; }
}