@charset "UTF-8";

/*----- 瀏覽器預設設定 -----*/
@font-face {
  font-family: 'FakePearl-Regular';
  src: url('https://cdn.jsdelivr.net/gh/max32002/FakePearl@1.1/webfont/FakePearl-Regular.woff2') format('woff2'),
       url('https://cdn.jsdelivr.net/gh/max32002/FakePearl@1.1/webfont/FakePearl-Regular.woff') format('woff');
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
  width: 100%;
}

body {
  font-family: 'FakePearl-Regular', 'Noto Sans TC', sans-serif;
  color: #333;
  line-height: 1.6;
  overflow-x: hidden;
  width: 100%;
  max-width: 100%;
  background: #082142 url('../img/bg.jpg') no-repeat center top;
  background-size: cover !important;
  background-position: top center;
  background-attachment: scroll;
  min-height: 100vh;
}

.bg-fixed {
  display: none;
}

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

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/*----- 共用項目 ----*/
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 5.2vw;
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom: 1px solid transparent;
  box-shadow: none;
  z-index: 999;
  padding: 0 3%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.4s ease;
}

.header.scrolled {
  background: rgb(52 71 99 / 76%);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 0.4vw 1.5vw rgba(5, 18, 42, 0.3);
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 1.6vw;
}

.logo-namr {
  display: flex;
  align-items: center;
}

.logo-namr img {
  height: 3.4vw;
  width: auto;
  transition: transform 0.3s ease;
}

.logo-namr:hover img {
  transform: scale(1.03);
}

.logo-gkids {
  display: flex;
  align-items: center;
}

.logo-gkids img {
  height: 2.6vw;
  width: auto;
  transition: transform 0.3s ease;
}

.logo-gkids:hover img {
  transform: scale(1.03);
}

.navmenu {
  display: flex;
  align-items: center;
}

.navmenu ul {
  display: flex;
  align-items: center;
  gap: 1.8vw;
}

.navmenu ul li a {
  font-size: 1.15vw;
  color: #fff;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.5vw;
  transition: color 0.3s ease;
}

.navmenu ul li a:hover,
.navmenu ul li a.active {
  color: #FFD972;
}

.navmenu ul li a:hover .link-icon,
.navmenu ul li a.active .link-icon {
  border-color: #FFD972;
  transform: rotate(5deg) scale(1.05);
}

.navmenu .link-icon {
  width: 2.6vw;
  height: 2.6vw;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border: 0.18vw solid #fff;
  border-radius: 50%;
  transition: all 0.3s ease;
}

/* 精彩試閱按鈕雙行與圓弧膠囊標籤 */
.nav-text-group {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.15;
  gap: 0.2vw;
}

.nav-text-main {
  font-size: 1.15vw;
}

.nav-sub-badge {
  display: inline-block;
  font-size: 0.68vw;
  font-weight: 100;
  color: #081c3c;
  background-color: #ffffff;
  padding: 0.12vw 0.5vw;
  border-radius: 20px;
  white-space: nowrap;
  letter-spacing: 0.02em;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
}

.navmenu ul li a:hover .nav-sub-badge,
.navmenu ul li a.active .nav-sub-badge {
  background-color: #FFD972;
  color: #081c3c;
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(255, 217, 114, 0.4);
}

/* 華文版方形導圓角切換按鈕 */
.nav-item-lang {
  margin-left: 0.5vw;
}

.nav-lang-btn {
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  padding: 0.4vw 1.2vw !important;
  border: 1.5px solid #FFD972 !important;
  border-radius: 8px !important;
  background: rgba(255, 217, 114, 0.12) !important;
  color: #FFD972 !important;
  font-size: 1.1vw !important;
  font-weight: 700 !important;
  letter-spacing: 0.05em;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  transition: all 0.3s ease !important;
  text-decoration: none;
}

.nav-lang-btn:hover {
  background: #FFD972 !important;
  color: #081c3c !important;
  box-shadow: 0 0 14px rgba(255, 217, 114, 0.5) !important;
  transform: translateY(-0.15vw);
}

.mobile-nav-toggle {
  display: none;
  font-size: 4vw;
  cursor: pointer;
  background: none;
  border: none;
  color: #fff;
}

.section {
  position: relative;
  z-index: 5;
  padding: 3.5vw 4.5vw;
  width: 86%;
  max-width: 1360px;
  margin: 7vw auto;
  background: linear-gradient(165deg, rgba(244, 249, 255, 0.92) 0%, rgba(230, 242, 255, 0.86) 100%);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.85);
  border-radius: 2vw;
  box-shadow: 0 1.2vw 3.5vw rgba(8, 38, 85, 0.10);
}

.section-title {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2vw;
  font-weight: bold;
  color: #0E458D;
  margin-bottom: 4vw;
  border-bottom: 0.25vw solid #1b75bb; /* 改為海洋主題藍色，移除舊版 #dc3545 */
  padding-bottom: 1vw;
  width: 100%;
}

.section-title .section-icon {
  width: 3vw;
  margin-right: 1vw;
  border-radius: 50%;
  box-shadow: 0 0.2vw 0.5vw rgba(0,0,0,0.2);
}

.btn {
  display: inline-block;
  padding: 1vw 2.5vw;
  font-size: 1.2vw;
  font-weight: bold;
  text-align: center;
  border-radius: 5vw;
  transition: 0.3s;
  cursor: pointer;
  white-space: nowrap;
}

.btn-buy {
  background: linear-gradient(135deg, #0e458d 0%, #1b68bf 100%);
  color: #fff;
  border: none;
  box-shadow: 0 0.4vw 1.2vw rgba(14, 69, 141, 0.35);
}

.btn-buy:hover {
  background: linear-gradient(135deg, #165baf 0%, #2582df 100%);
  transform: translateY(-0.2vw);
  box-shadow: 0 0.6vw 1.5vw rgba(14, 69, 141, 0.45);
}


.scroll-top {
  position: fixed;
  bottom: 2vw;
  right: 4.4vw;
  transform: translateX(50%);
  background: rgba(14, 69, 141, 0.7);
  color: #fff;
  width: 4vw;
  height: 4vw;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1vw;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease, background 0.3s ease, transform 0.3s ease;
  z-index: 998;
}

.scroll-top.active {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  background: #0E458D;
  transform: translateX(50%) scale(1.08);
}

#action-btn {
  position: fixed;
  bottom: 7.2vw;
  right: 4.4vw;
  transform: translateX(50%);
  z-index: 998;
  text-decoration: none;
  transition: transform 0.3s ease;
}

.action-btn-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 4.8vw;
  height: 4.8vw;
  background: linear-gradient(135deg, #0e458d 0%, #1a65c7 100%);
  color: #fff;
  border: 0.18vw solid #FFD972;
  border-radius: 50%;
  box-shadow: 0 0.4vw 1.2vw rgba(14, 69, 141, 0.4);
  animation: subtle-pulse 2.5s infinite ease-in-out;
  transition: all 0.3s ease;
}

.action-btn-icon {
  width: 1.6vw;
  height: 1.6vw;
  stroke: #FFD972;
  margin-bottom: 0.1vw;
  transition: stroke 0.3s ease;
}

.action-text {
  font-size: 0.8vw;
  font-weight: bold;
  color: #fff;
  white-space: nowrap;
  transition: color 0.3s ease;
}

#action-btn:hover {
  transform: translateX(50%) scale(1.1);
}

#action-btn:hover .action-btn-inner {
  background: #FFD972;
  border-color: #0e458d;
}

#action-btn:hover .action-btn-icon {
  stroke: #0e458d;
}

#action-btn:hover .action-text {
  color: #0e458d;
}

@keyframes subtle-pulse {
  0%, 100% { transform: scale(1); box-shadow: 0 0.4vw 1.2vw rgba(14, 69, 141, 0.4); }
  50% { transform: scale(1.06); box-shadow: 0 0.6vw 1.6vw rgba(255, 217, 114, 0.6); }
}

/*----- 正式內容 -----*/

/*--- 區塊一：KV 主視覺區 ---*/
.kv-section {
  position: relative;
  width: 100%;
  min-height: auto;
  padding-top: 7.5vw;  /* 離上方主選單拉開充足呼吸間距 */
  padding-bottom: 5.5vw; /* 加上 padding-bottom，讓 KV 與底端巨鯨保有開闊開朗的海洋呼吸感 */
  margin-bottom: 7vw;  /* 大幅加寬與下方繪本介紹區塊的呼吸距離 */
  box-sizing: border-box;
  overflow: visible;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
}

/* KV 區塊下方 100% 寬深藍漸層過渡帶 (貼齊 padding-bottom 底部，上方 80% 透明度至下方 0% 透明度) */
.kv-bottom-gradient {
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  height: 5.5vw;
  min-height: 50px;
  max-height: 95px;
  background: linear-gradient(180deg, rgba(6, 26, 62, 0.8) 0%, rgba(6, 26, 62, 0) 100%);
  pointer-events: none;
  z-index: 2;
}

/* 浮動魚群剪影裝飾容器 */
.kv-fish-decorations {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}

.parallax-fish {
  position: absolute;
  pointer-events: none;
  opacity: 1; /* 依指示取消半透明度，飽滿呈現 */
  will-change: transform;
}

/* bg_fish-tl: 完整海豚插畫，置於左側，保留與邊緣呼吸空間 */
.fish-tl {
  top: 7vw;
  left: 3.5vw;
  right: auto;
  width: 17vw;
  max-width: 280px;
  animation: gentle-swim-1 8s ease-in-out infinite alternate;
}

.fish-tr {
  top: 15vw;
  right: 0;
  width: 21vw;
  max-width: 350px;
  animation: gentle-swim-2 10s ease-in-out infinite alternate;
}

.fish-r {
  top: 32vw;
  right: 0;
  width: 25vw;
  max-width: 430px;
  animation: gentle-swim-1 9s ease-in-out infinite alternate;
}

/* 依指示交換 br-02 與 br-01 位置：br-02 在上方，br-01 在最下方貼齊 */
.fish-br-02 {
  bottom: 7vw;
  right: 0;
  width: 20vw;
  max-width: 330px;
  animation: gentle-swim-2 8s ease-in-out infinite alternate;
}

.fish-br-01 {
  bottom: 0;
  right: 0;
  width: 23vw;
  max-width: 390px;
  animation: gentle-swim-3 7s ease-in-out infinite alternate;
}

/* KV 內容容器 */
.kv-container {
  position: relative;
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 0;
  padding-bottom: 3.2vw; /* 保留文案與區塊底部間距 */
}

/* 1. 插畫家徽章 Slogan Badge (縮小、緊密間距、海豚往右下靠貼齊圓角) */
.kv-slogan-badge {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0.12vw solid #0c3388;
  border-radius: 1.2vw;
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 0.25vw 1.6vw 0.25vw 2.2vw;
  margin-bottom: 1.4vw;
  box-shadow: 0 0.3vw 1vw rgba(12, 51, 136, 0.08);
  transition: transform 0.3s ease;
}

.kv-slogan-badge:hover {
  transform: translateY(-2px);
}

.kv-slogan-img {
  position: absolute;
  top: -0.8vw; /* 依指示往右下靠一點，緊貼圓角邊框 */
  left: 0.2vw;
  width: 4.5vw;
  max-width: 88px;
  z-index: 10;
  pointer-events: none;
  filter: drop-shadow(0 0.15vw 0.3vw rgba(12, 51, 136, 0.28));
  animation: subtle-wiggle 4s ease-in-out infinite alternate;
}

.kv-slogan-text {
  font-size: 1.02vw;
  color: #0c3388;
  font-weight: 500;
  letter-spacing: 0.06em;
}

.author-highlight {
  font-size: 1.4vw;
  font-weight: 900;
  color: #082142;
  margin: 0 0.3vw;
  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.85);
}

/* 2. 書名《海洋之歌》主字標 (再放大) */
.kv-bookname-wrap {
  margin-bottom: 0.8vw;
  width: 42vw;
  max-width: 650px;
}

.kv-bookname {
  width: 100%;
  height: auto;
  display: block;
  filter: drop-shadow(0 0.5vw 1.2vw rgba(255, 255, 255, 0.85)) drop-shadow(0 0.2vw 0.5vw rgba(12, 51, 136, 0.2));
}

/* 3. 臺文版副書名 Slogan */
.kv-subtitle-wrap {
  margin-bottom: 2.8vw;
  width: 36vw;
  max-width: 550px;
}

.kv-subtitle {
  width: 100%;
  height: auto;
  display: block;
  filter: drop-shadow(0 0.3vw 0.8vw rgba(255, 255, 255, 0.9));
}

/* 4. 主要視覺：兩隻悠游的鯨魚 (與上方書名及下方鯨魚圖片保留更多間距) */
.kv-main-visual {
  width: 48vw;
  max-width: 740px;
  margin-top: 1vw;
  margin-bottom: 3.8vw;
  position: relative;
  z-index: 5;
}

.kv-whales-img {
  width: 100%;
  height: auto;
  display: block;
  animation: whales-swimming 6.5s ease-in-out infinite alternate;
  filter: drop-shadow(0 0.8vw 2vw rgba(12, 51, 136, 0.14));
}

/* 5. 兩段動人文案 */
.kv-poetry-wrap {
  position: relative;
  z-index: 5;
  margin-bottom: 0; /* 留白已由 kv-container 的 padding-bottom 精確保留 */
}

.kv-poetry-line {
  font-size: 1.4vw;
  color: #061c38;
  font-weight: 600;
  line-height: 2.1;
  letter-spacing: 0.12em;
  text-shadow: 0 2px 10px rgba(255, 255, 255, 0.95), 0 0 24px rgba(255, 255, 255, 0.7);
}

/* 6. 左下角抹香鯨大半身圖 (底部精準貼齊繪本介紹頂部，水平微游動) */
.kv-big-whale-wrap {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24vw;
  max-width: 440px;
  z-index: 6;
  pointer-events: none;
  line-height: 0;
}

.kv-big-whale {
  width: 100%;
  height: auto;
  display: block;
  animation: big-whale-drift-h 8s ease-in-out infinite alternate;
  filter: drop-shadow(0 0.5vw 1.5vw rgba(8, 33, 66, 0.2));
  will-change: transform;
}

/* 載入進場動畫 */
.animate-kv {
  animation: kv-fade-in-up 0.9s cubic-bezier(0.16, 1, 0.3, 1) both;
  animation-delay: var(--delay, 0s);
}

@keyframes kv-fade-in-up {
  0% {
    opacity: 0;
    transform: translateY(32px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes whales-swimming {
  0% {
    transform: translateY(0) rotate(0deg);
  }
  100% {
    transform: translateY(-14px) rotate(0.8deg);
  }
}

/* 巨鯨水平呼吸游動，保持Y軸為0，底部裁切線始終緊貼繪本介紹區塊 */
@keyframes big-whale-drift-h {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(10px);
  }
}

@keyframes gentle-swim-1 {
  0% { transform: translate(0, 0); }
  100% { transform: translate(16px, -12px); }
}

@keyframes gentle-swim-2 {
  0% { transform: translate(0, 0); }
  100% { transform: translate(-15px, 14px); }
}

@keyframes gentle-swim-3 {
  0% { transform: translate(0, 0); }
  100% { transform: translate(12px, 10px); }
}

@keyframes subtle-wiggle {
  0% { transform: translateY(0) rotate(0deg); }
  100% { transform: translateY(-4px) rotate(2deg); }
}

/* 中段與各區塊環境魚群剪影裝飾 (必貼齊瀏覽器右側、z-index 在內容下方) */
.page-ambient-fish {
  position: relative;
  width: 100%;
  height: 0;
  overflow: visible;
  pointer-events: none;
  z-index: 1; /* 壓在所有內容下方，只在 bg.jpg 上面 */
}

.page-ambient-fish img {
  position: absolute;
  right: 0; /* 必須貼齊瀏覽器右側，避免露出右側裁切破綻 */
  pointer-events: none;
  opacity: 1; /* 位於內容層下方，取消半透明度，飽滿呈現 */
  will-change: transform;
}

.decor-fish-right-1 {
  top: -5vw;
  width: 22vw;
  max-width: 330px;
  animation: gentle-swim-2 10s ease-in-out infinite alternate;
}

.decor-fish-right-2 {
  top: -4vw;
  width: 25vw;
  max-width: 370px;
  animation: gentle-swim-1 9s ease-in-out infinite alternate;
}

.decor-fish-right-3 {
  top: -5vw;
  width: 21vw;
  max-width: 310px;
  animation: gentle-swim-3 8s ease-in-out infinite alternate;
}

/* Footer 上方專用裝飾魚群 (bg_fish-bl.png 底部截斷，必須緊貼 footer 頂部) */
.footer-fish-decor {
  position: relative;
  width: 100%;
  height: 0;
  margin-top: 6vw;
  overflow: visible;
  pointer-events: none;
  z-index: 11;
}

.footer-fish-bl {
  position: absolute;
  left: 4vw;
  bottom: 0; /* 截斷的平整底部緊貼 footer 上緣 */
  width: 28vw;
  max-width: 420px;
  pointer-events: none;
  opacity: 1; /* 取消半透明度 */
  animation: gentle-swim-1 10s ease-in-out infinite alternate;
}

/*--- 區塊二：story ---*/
.story-content {
  display: flex;
  gap: 3.5vw;
  align-items: flex-start;
}

.story-left {
  flex: 0 0 320px;
  width: 320px;
  text-align: center;
  position: sticky;
  top: 8vw;
}

.story-left .book {
  width: 100%;
  max-width: 300px;
  margin: 0 auto 1.5vw auto;
  border-radius: 0.5vw;
  filter: drop-shadow(0 0.8vw 1.8vw rgba(12, 51, 136, 0.16));
  transition: transform 0.3s ease;
}

.story-left .book:hover {
  transform: translateY(-4px) scale(1.02);
}

.story-left .price {
  font-size: 1.25vw;
  font-weight: 700;
  color: #0E458D;
  margin-bottom: 1.2vw;
  letter-spacing: 0.04em;
}

.book-notice {
  font-size: clamp(12.5px, 0.78vw, 14.5px);
  color: #557095;
  margin-top: 1vw;
  line-height: 1.5;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.book-notice-highlight {
  color: #FF4838;
  font-weight: 700;
}

/* 購書首刷贈品卡片 */
.story-gift-box {
  margin-top: 1.6vw;
  padding: 1.2vw 1vw 1.2vw;
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.95) 0%, rgba(238, 247, 255, 0.88) 100%);
  border: 1.5px dashed #8ec3f2;
  border-radius: 16px;
  box-shadow: 0 0.5vw 1.8vw rgba(14, 69, 141, 0.08);
  text-align: center;
  position: relative;
  transition: all 0.35s ease;
}

.story-gift-box:hover {
  border-color: #4a9beb;
  border-style: solid;
  background: #ffffff;
  transform: translateY(-3px);
  box-shadow: 0 0.8vw 2.2vw rgba(14, 69, 141, 0.14);
}

.gift-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35vw;
  margin-bottom: 0.6vw;
}

.gift-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(11px, 0.72vw, 13px);
  font-weight: 100;
  color: #fff;
  background: linear-gradient(135deg, #FF6B4A 0%, #FF4838 100%);
  padding: 0.22vw 0.8vw;
  border-radius: 20px;
  letter-spacing: 0.04em;
  box-shadow: 0 2px 8px rgba(255, 107, 74, 0.3);
}

.gift-name {
  font-size: clamp(15px, 1.15vw, 19px);
  font-weight: 700;
  color: #0E458D;
  letter-spacing: 0.03em;
  line-height: 1.35;
}

.gift-img-wrap {
  width: 100%;
  max-width: 240px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
}

.gift-img-link {
  display: block;
  width: 100%;
  text-decoration: none;
  cursor: zoom-in;
}

.gift-img {
  width: 100%;
  height: auto;
  display: block;
  filter: drop-shadow(0 0.5vw 1.2vw rgba(14, 69, 141, 0.12));
  transition: transform 0.4s ease, filter 0.4s ease;
  cursor: zoom-in;
}

.story-gift-box:hover .gift-img,
.gift-img-link:hover .gift-img {
  transform: scale(1.04) rotate(-0.5deg);
  filter: drop-shadow(0 0.8vw 1.6vw rgba(14, 69, 141, 0.2));
}

.story-right {
  flex: 1;
  min-width: 0;
  font-size: 1.1vw;
}

.story-main-title {
  font-size: 1.8vw;
  font-weight: 700;
  color: #0E458D;
  margin-bottom: 0.8vw;
  letter-spacing: 0.04em;
  line-height: 1.4;
}

.story-sub-title {
  font-size: clamp(15.5px, 1.1vw, 21px);
  font-weight: 500;
  color: #1b65b3;
  margin-bottom: 1.8vw;
  line-height: 1.6;
  letter-spacing: 0.02em;
}

.story-desc p {
  font-size: 1.1vw;
  line-height: 2;
  color: #334155;
  margin-bottom: 1.4vw;
  text-align: justify;
  letter-spacing: 0.02em;
}

.story-desc p:last-child {
  margin-bottom: 0;
}

/*--- Audio Player ---*/
.audio-section {
  text-align: center;
  margin-top: 5vw;
  border-top: 0.1vw dashed #ccc;
  padding-top: 4vw;
}
.audio-title {
  font-size: 1.5vw;
  color: #0E458D;
  margin-bottom: 1vw;
}
.audio-player {
  width: 40vw;
}

/*--- 區塊三：read ---*/
.read-gallery {
  display: flex;
  gap: 3vw;
  justify-content: center;
}

.read-item {
  width: 48%;
  border-radius: 1.2vw;
  overflow: hidden;
  border: 1px solid rgba(14, 69, 141, 0.15);
  box-shadow: 0 0.6vw 1.8vw rgba(10, 35, 75, 0.08);
  background: #fff;
  position: relative;
}

.read-item a {
  position: relative;
  display: block;
  overflow: hidden;
  line-height: 0;
}

.read-item img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.5s cubic-bezier(0.2, 0, 0.2, 1);
}

.read-item:hover img {
  transform: scale(1.04);
}

/* 精緻圓形毛玻璃放大顯示按鈕 */
.zoom-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.95);
  width: 4.5vw;
  height: 4.5vw;
  min-width: 52px;
  min-height: 52px;
  max-width: 70px;
  max-height: 70px;
  border-radius: 50%;
  background: rgba(8, 30, 64, 0.72);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1.5px solid rgba(255, 255, 255, 0.85);
  box-shadow: 0 0.5vw 1.5vw rgba(0, 20, 50, 0.35);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: #fff;
  pointer-events: none;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  opacity: 0.9;
}

.read-item:hover .zoom-overlay {
  transform: translate(-50%, -50%) scale(1.08);
  background: rgba(14, 69, 141, 0.88);
  border-color: #ffd972;
  color: #ffd972;
  box-shadow: 0 0.8vw 2.2vw rgba(14, 69, 141, 0.5);
  opacity: 1;
}

.zoom-icon {
  width: 1.4vw;
  height: 1.4vw;
  min-width: 18px;
  min-height: 18px;
  margin-bottom: 0.15vw;
  stroke: currentColor;
  stroke-width: 2.2;
}

.zoom-text {
  font-size: 0.72vw;
  min-font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1;
}

/*--- 區塊四：author ---*/
.author-info {
  display: flex;
  gap: 4vw;
  align-items: flex-start;
  margin-bottom: 3.5vw;
}

.author-info:not(:last-child) {
  border-bottom: 0.12vw dashed rgba(14, 69, 141, 0.25);
  padding-bottom: 3.5vw;
}

.author-left {
  flex: 0 0 250px;
  width: 250px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.author-avatar {
  width: 195px;
  height: 195px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 0.6vw 1.8vw rgba(10, 35, 75, 0.2);
  border: 4px solid #fff;
  margin-bottom: 1.2vw;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.author-avatar:hover {
  transform: scale(1.04);
  box-shadow: 0 0.8vw 2.2vw rgba(14, 69, 141, 0.3);
}

.author-title-name {
  font-size: 1.35vw;
  font-weight: 700;
  color: #0E458D;
  line-height: 1.4;
  letter-spacing: 0.04em;
  margin: 0;
  white-space: nowrap;
}

.author-bio {
  flex: 1;
  max-width: 820px;
  min-width: 0;
}

.author-bio p {
  font-size: 1.05vw;
  line-height: 2.1;
  color: #334155;
  margin-bottom: 1.2vw;
  text-align: justify;
  letter-spacing: 0.02em;
}

.author-bio p:last-child {
  margin-bottom: 0;
}

/*--- 區塊：繪本動畫 (雙影片卡片) ---*/
.animation-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5vw;
  width: 100%;
}

.video-card {
  background: rgba(255, 255, 255, 0.92);
  border-radius: 1.2vw;
  overflow: hidden;
  box-shadow: 0 0.8vw 2vw rgba(10, 37, 72, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.8);
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.video-card:hover {
  transform: translateY(-0.4vw);
  box-shadow: 0 1.2vw 2.5vw rgba(10, 37, 72, 0.15);
}

.video-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5vw;
  padding: 0.8vw 1.2vw;
  font-size: 1.15vw;
  font-weight: bold;
  letter-spacing: 0.05em;
}

.highlight-badge {
  background: linear-gradient(135deg, #0e458d 0%, #1a65c7 100%);
  color: #fff;
}

.full-badge {
  background: linear-gradient(135deg, #0b2545 0%, #173d6b 100%);
  color: #FFD972;
}

.video-wrapper {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
  background: #000;
}

.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.video-info {
  padding: 1.5vw 1.8vw;
  background: transparent;
}

.video-info h4 {
  font-size: 1.3vw;
  color: #0E458D;
  margin-bottom: 0.5vw;
  font-weight: 700;
}

.video-info p {
  font-size: 1.05vw;
  color: #555;
  line-height: 1.6;
}

/*--- 即將上線 提示區塊 (Coming Soon Placeholder) ---*/
.coming-soon,
.animation-grid > div:not(.video-card),
.audio-section > div:not(.audio-player) {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  box-sizing: border-box;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.96) 0%, rgba(235, 246, 255, 0.92) 100%);
  border: 1.5px dashed rgba(14, 69, 141, 0.3);
  border-radius: 1.2vw;
  box-shadow: 0 0.6vw 2vw rgba(10, 37, 72, 0.06);
  color: #0E458D;
  font-size: 1.25vw;
  font-weight: 600;
  letter-spacing: 0.12em;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.coming-soon:hover,
.animation-grid > div:not(.video-card):hover,
.audio-section > div:not(.audio-player):hover {
  transform: translateY(-2px);
  border-color: rgba(14, 69, 141, 0.5);
  box-shadow: 0 1vw 2.5vw rgba(10, 37, 72, 0.1);
}

.animation-grid .coming-soon,
.animation-grid > div:not(.video-card) {
  grid-column: 1 / -1;
  width: 100%;
  max-width: 680px;
  min-height: 240px;
  padding: 3.5vw 4vw;
  margin: 1vw auto 2vw;
}

.animation-grid .coming-soon::before,
.animation-grid > div:not(.video-card)::before {
  content: "";
  display: block;
  width: 3.2vw;
  height: 3.2vw;
  min-width: 40px;
  min-height: 40px;
  margin-bottom: 1.2vw;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230E458D' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='2' y='4' width='20' height='16' rx='2.5'%3E%3C/rect%3E%3Cpolygon points='10,8 16,12 10,16' fill='%230E458D' stroke='none'%3E%3C/polygon%3E%3C/svg%3E") no-repeat center;
  background-size: contain;
  opacity: 0.85;
}

.audio-section .coming-soon,
.audio-section > div:not(.audio-player) {
  width: 100%;
  max-width: 480px;
  min-height: 110px;
  padding: 1.8vw 3vw;
  margin: 1.2vw auto 0;
}

.audio-section .coming-soon::before,
.audio-section > div:not(.audio-player)::before {
  content: "";
  display: block;
  width: 2.4vw;
  height: 2.4vw;
  min-width: 32px;
  min-height: 32px;
  margin-bottom: 0.8vw;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230E458D' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 18v-6a9 9 0 0 1 18 0v6'%3E%3C/path%3E%3Cpath d='M21 19a2 2 0 0 1-2 2h-1a2 2 0 0 1-2-2v-3a2 2 0 0 1 2-2h3zM3 19a2 2 0 0 0 2 2h1a2 2 0 0 0 2-2v-3a2 2 0 0 0-2-2H3z'%3E%3C/path%3E%3C/svg%3E") no-repeat center;
  background-size: contain;
  opacity: 0.85;
}

/* Footer */
.footer {
  position: relative;
  z-index: 12;
  background-color: #FFD972;
  color: #333;
  padding: 4vw 10%;
  text-align: center;
  font-size: 1vw;
}

.footer .social {
  margin-bottom: 2.2vw;
  font-size: 1.15vw;
  line-height: 1.8;
}

.footer .social a {
  margin: 0 0.8vw;
  color: #2c3e50;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

.footer .social a:hover {
  color: #0e458d;
}

.footer .separator {
  color: rgba(0, 0, 0, 0.28);
  margin: 0 0.2vw;
  user-select: none;
}

.footer-logo-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2.2vw;
  margin-bottom: 2.2vw;
}

.footer-logo-namr {
  display: flex;
  align-items: center;
}

.footer-logo-namr img {
  height: 5.8vw;
  min-height: 75px;
  max-height: 105px;
  width: auto;
  transition: transform 0.25s ease;
}

.footer-logo-gkids {
  display: flex;
  align-items: center;
}

.footer-logo-gkids img {
  height: 3.2vw;
  min-height: 42px;
  max-height: 58px;
  width: auto;
  transition: transform 0.25s ease;
}

.footer-logo-namr:hover img,
.footer-logo-gkids:hover img {
  transform: scale(1.05);
}

.footer-copyright {
  font-size: 0.95vw;
  line-height: 2;
  color: #333;
}

.footer-copyright a {
  color: #0e458d;
  text-decoration: underline;
  transition: color 0.2s ease;
}

.footer-copyright a:hover {
  color: #072958;
}


/*----- rwd：小型桌機與筆電 (1024px - 1200px) -----*/
@media screen and (max-width: 1200px) {
  .kv-big-whale-wrap {
    width: 20vw;
    max-width: 260px;
    bottom: 0;
    left: 0;
  }
}

/*----- rwd：平板 -----*/
@media screen and (max-width: 991px) {
  .header {
    padding: 0 4%;
    height: 7.5vw;
  }

  .logo-group {
    gap: 2vw;
  }

  .logo-namr img {
    height: 5vw;
  }

  .logo-gkids img {
    height: 3.8vw;
  }

  .navmenu ul {
    gap: 2vw;
  }

  .navmenu ul li a {
    font-size: 1.8vw;
    gap: 0.6vw;
  }

  .navmenu .link-icon {
    width: 3.4vw;
    height: 3.4vw;
    border-width: 0.25vw;
  }

  .nav-text-main {
    font-size: 1.8vw;
  }

  .nav-sub-badge {
    font-size: 1.05vw;
    padding: 0.15vw 0.6vw;
    border-radius: 12px;
  }

  .nav-lang-btn {
    font-size: 1.6vw !important;
    padding: 0.5vw 1.5vw !important;
    border-radius: 6px !important;
  }

  .section {
    padding: 6vw 5%;
    width: 90%;
    margin: 8.5vw auto;
    border-radius: 4vw;
  }

  .section-title {
    font-size: 3.5vw;
    margin-bottom: 5vw;
  }

  .section-title .section-icon {
    width: 5vw;
  }

  .btn {
    font-size: 2.5vw;
    padding: 1.5vw 4vw;
  }

  .scroll-top {
    width: 7.5vw;
    height: 7.5vw;
    font-size: 2.3vw;
    bottom: 3.5vw;
    right: 7vw;
    transform: translateX(50%);
  }

  .scroll-top:hover {
    transform: translateX(50%) scale(1.08);
  }

  #action-btn {
    bottom: 13vw;
    right: 7vw;
    transform: translateX(50%);
  }

  #action-btn:hover {
    transform: translateX(50%) scale(1.1);
  }

  .action-btn-inner {
    width: 8.2vw;
    height: 8.2vw;
  }

  .action-btn-icon {
    width: 2.8vw;
    height: 2.8vw;
  }

  .action-text {
    font-size: 1.3vw;
  }

  /* KV 平板適應 */
  .kv-section {
    min-height: auto;
    padding-top: 13vw;
    padding-bottom: 6vw;
    margin-bottom: 8.5vw;
  }
  .kv-container {
    padding-top: 0;
    padding-bottom: 4vw;
  }
  .kv-slogan-badge {
    padding: 0.5vw 2.2vw 0.5vw 2.8vw;
    border-radius: 2vw;
    border-width: 0.18vw;
    margin-bottom: 1.8vw;
  }
  .kv-slogan-img {
    width: 6.2vw;
    top: -1vw;
    left: -1.4vw;
  }
  .kv-slogan-text {
    font-size: 1.6vw;
  }
  .author-highlight {
    font-size: 2.2vw;
  }
  .kv-bookname-wrap {
    width: 58vw;
    margin-bottom: 1.5vw;
  }
  .kv-subtitle-wrap {
    width: 54vw;
    margin-bottom: 3.5vw;
  }
  .kv-main-visual {
    width: 76vw;
    margin-bottom: 4vw;
  }
  .kv-poetry-wrap {
    margin-bottom: 0;
  }
  .kv-poetry-line {
    font-size: 2.2vw;
    line-height: 2;
  }
  /* 平板巨鯨尺寸適度縮小，避免在小螢幕時遮擋兩行詩句文案 */
  .kv-big-whale-wrap {
    width: 20vw;
    max-width: 220px;
    bottom: 0;
    left: 0;
  }
  .fish-tl { top: 8vw; left: 3vw; right: auto; width: 22vw; }
  .fish-tr { top: 18vw; right: 0; width: 26vw; }
  .fish-r { top: 38vw; right: 0; width: 30vw; }
  .fish-br-02 { bottom: 8vw; right: 0; width: 24vw; }
  .fish-br-01 { bottom: 0; right: 0; width: 28vw; }

  /* 頁面魚群裝飾 平板微調 (貼齊右側) */
  .decor-fish-right-1 { width: 28vw; right: 0; }
  .decor-fish-right-2 { width: 32vw; right: 0; }
  .decor-fish-right-3 { width: 28vw; right: 0; }

  /* Footer 魚群裝飾 平板微調 */
  .footer-fish-bl { width: 36vw; left: 2vw; bottom: 0; }

  /* Story */
  .story-content {
    flex-direction: column;
    align-items: center;
  }
  .story-left { width: 70%; flex: 0 0 auto; margin-bottom: 5vw; position: relative; top: auto; }
  .story-left .price { font-size: 2.4vw; margin-bottom: 2vw; }
  .book-notice { font-size: 1.8vw; margin-top: 1.6vw; white-space: normal; }
  .story-gift-box { max-width: 320px; margin: 3.5vw auto 0; padding: 2.5vw 2.5vw 2.2vw; border-radius: 16px; }
  .gift-header { gap: 0.8vw; margin-bottom: 1.5vw; }
  .gift-badge { font-size: 1.6vw; padding: 0.45vw 1.6vw; border-radius: 20px; }
  .gift-name { font-size: 2.4vw; }
  .gift-img-wrap { max-width: 250px; }
  .story-right { width: 100%; font-size: 2vw; }
  .story-main-title { font-size: 3.2vw; margin-bottom: 1.5vw; }
  .story-sub-title { font-size: 2.4vw; margin-bottom: 3vw; }
  .story-desc p { font-size: 2.1vw; line-height: 2; margin-bottom: 2.5vw; }

  /* Animation (平板版影片卡片) */
  .animation-grid {
    grid-template-columns: 1fr;
    gap: 4vw;
  }

  .video-card {
    border-radius: 2.5vw;
  }

  .video-badge {
    font-size: 2.2vw;
    padding: 1.5vw 2vw;
  }

  .video-info h4 {
    font-size: 2.4vw;
  }

  .video-info p {
    font-size: 2vw;
  }

  /* Audio */
  .audio-section { margin-top: 6vw; }
  .audio-title { font-size: 3vw; margin-bottom: 2vw; }
  .audio-player { width: 60vw; }

  /* Coming soon placeholder (平板) */
  .coming-soon,
  .animation-grid > div:not(.video-card),
  .audio-section > div:not(.audio-player) {
    font-size: 2.2vw;
    border-radius: 16px;
    letter-spacing: 0.1em;
  }
  .animation-grid .coming-soon,
  .animation-grid > div:not(.video-card) {
    min-height: 200px;
    padding: 5vw 4vw;
    max-width: 90%;
  }
  .animation-grid .coming-soon::before,
  .animation-grid > div:not(.video-card)::before {
    width: 5vw;
    height: 5vw;
    min-width: 36px;
    min-height: 36px;
    margin-bottom: 2vw;
  }
  .audio-section .coming-soon,
  .audio-section > div:not(.audio-player) {
    min-height: 100px;
    padding: 3.5vw 4vw;
    max-width: 70vw;
  }
  .audio-section .coming-soon::before,
  .audio-section > div:not(.audio-player)::before {
    width: 4.5vw;
    height: 4.5vw;
    min-width: 30px;
    min-height: 30px;
    margin-bottom: 1.5vw;
  }

  /* Read */
  .read-gallery { flex-direction: row; gap: 2.5vw; }
  .read-item { width: 48%; margin-bottom: 0; }
  .zoom-overlay { width: 5.5vw; height: 5.5vw; min-width: 48px; min-height: 48px; border-radius: 50%; }
  .zoom-icon { width: 2.2vw; height: 2.2vw; min-width: 18px; min-height: 18px; margin-bottom: 0.2vw; }
  .zoom-text { font-size: 1.1vw; min-font-size: 11px; }

  /* Author */
  .author-info { gap: 3.5vw; margin-bottom: 4vw; }
  .author-info:not(:last-child) { padding-bottom: 4vw; }
  .author-left { flex: 0 0 200px; width: 200px; }
  .author-avatar { width: 155px; height: 155px; margin-bottom: 1.2vw; border-width: 3px; }
  .author-title-name { font-size: 2.2vw; }
  .author-bio p { font-size: 1.8vw; line-height: 1.9; margin-bottom: 1.4vw; }

  /* Footer */
  .footer { font-size: 1.8vw; padding: 6vw 5%; }
  .footer .social { font-size: 2.2vw; margin-bottom: 3.5vw; }
  .footer-logo-group { gap: 4vw; margin-bottom: 3.5vw; }
  .footer-logo-namr img { height: 8vw; min-height: 65px; max-height: 90px; }
  .footer-logo-gkids img { height: 4.8vw; min-height: 38px; max-height: 52px; }
  .footer-copyright { font-size: 1.7vw; line-height: 2; }
}


/*----- rwd：手機 -----*/
@media screen and (max-width: 575px) {
  .header {
    padding: 0 4%;
    height: 16vw;
  }

  .logo-group {
    gap: 3vw;
  }

  .logo-namr img {
    height: 10vw;
  }

  .logo-gkids img {
    height: 7.2vw;
  }

  .mobile-nav-toggle {
    display: block; /* 顯示漢堡選單按鈕 */
    font-size: 8vw;
    position: relative;
    z-index: 10000;
  }

  /* 手機版覆蓋式選單 */
  .navmenu ul {
    position: fixed;
    top: 0;
    right: 0;
    transform: translateX(105%);
    visibility: hidden;
    pointer-events: none;
    width: 82%;
    height: 100vh;
    background: rgba(8, 28, 60, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 24vw 8vw;
    box-shadow: -1vw 0 3vw rgba(0, 0, 0, 0.4);
    transition: transform 0.4s ease, visibility 0.4s ease;
    gap: 6vw;
    margin: 0;
    z-index: 9999;
  }

  .navmenu.nav-active ul {
    transform: translateX(0);
    visibility: visible;
    pointer-events: auto;
  }

  .navmenu ul li a {
    font-size: 5vw;
    gap: 3.5vw;
  }

  .navmenu .link-icon {
    width: 10vw;
    height: 10vw;
    border-width: 0.6vw;
  }

  .nav-text-group {
    gap: 1vw;
  }

  .nav-text-main {
    font-size: 5vw;
  }

  .nav-sub-badge {
    font-size: 3vw;
    padding: 0.6vw 2.2vw;
    border-radius: 20px;
  }

  .nav-item-lang {
    margin-left: 0;
    margin-top: 2vw;
  }

  .nav-lang-btn {
    font-size: 4.5vw !important;
    padding: 2vw 6vw !important;
    border-radius: 8px !important;
    width: 100%;
    text-align: center;
  }

  .section {
    padding: 8vw 5%;
    width: 95%;
    margin: 15vw auto;
    border-radius: 6vw;
  }


  .section-title {
    font-size: 6vw;
    margin-bottom: 8vw;
  }

  .section-title .section-icon {
    width: 8vw;
  }

  .btn {
    font-size: 4vw;
    padding: 2.5vw 6vw;
  }

  .scroll-top {
    width: 12vw;
    height: 12vw;
    font-size: 3.5vw;
    bottom: 4.5vw;
    right: 10vw;
    transform: translateX(50%);
  }

  .scroll-top:hover {
    transform: translateX(50%) scale(1.08);
  }

  #action-btn {
    bottom: 19vw;
    right: 10vw;
    transform: translateX(50%);
  }

  #action-btn:hover {
    transform: translateX(50%) scale(1.1);
  }

  .action-btn-inner {
    width: 13.5vw;
    height: 13.5vw;
    border-width: 0.5vw;
  }

  .action-btn-icon {
    width: 5.5vw;
    height: 5.5vw;
  }

  .action-text {
    font-size: 2.4vw;
  }

  /* KV 手機版優化 (滿版 100vh / 100dvh，大器海洋呼吸感) */
  .kv-section {
    min-height: 100vh;
    min-height: 100dvh;
    padding-top: 27vw;  /* 與上方 fixed header (16vw) 拉開約 11vw 舒適開闊距離 */
    padding-bottom: 16vw; /* 底部保留充足間距，確保文字文案絕對不與底端抹香鯨重疊 */
    margin-bottom: 14vw;
    margin-top: 0;
    overflow: visible;
    width: 100%;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
  }

  .kv-container {
    flex: 1;
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    overflow: visible;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding-top: 0;
    padding-bottom: 0;
    box-sizing: border-box;
  }

  .kv-slogan-badge {
    padding: 1.5vw 4vw 1.5vw 4.6vw;
    border-radius: 4vw;
    border-width: 0.28vw;
    margin-bottom: 2.8vw;
    max-width: 92vw;
  }

  .kv-slogan-img {
    width: 10vw;
    top: -1vw;
    left: -0.6vw;
  }

  .kv-slogan-text {
    font-size: 3.4vw;
    letter-spacing: 0.04em;
  }

  .author-highlight {
    font-size: 4.4vw;
    margin: 0 0.5vw;
    font-weight: 800;
  }

  .kv-bookname-wrap {
    width: 76vw;
    max-width: 310px;
    margin-bottom: 2vw;
  }

  .kv-subtitle-wrap {
    width: 72vw;
    max-width: 290px;
    margin-bottom: 9vw; /* 依指示：副標題下方多加距離，與主視覺鯨魚拉開呼吸感 */
  }

  .kv-main-visual {
    width: 76vw;
    max-width: 310px;
    margin-top: 0;
    margin-bottom: 5vw;
  }

  .kv-poetry-wrap {
    margin-top: auto; /* 在滿版 100vh 中自然彈性落於下半部，保持優雅節奏 */
    margin-bottom: 2vw;
    width: 94vw;
    position: relative;
    z-index: 10;
  }

  .kv-poetry-line {
    font-size: 4.4vw;
    font-weight: 700;
    line-height: 2.1;
    letter-spacing: 0.08em;
  }

  /* 手機版巨鯨放大（依指示放大展現巨靈威儀，且底緣留白保護詩句不被遮擋） */
  .kv-big-whale-wrap {
    width: 40vw;
    max-width: 185px;
    bottom: 0;
    left: 0;
    opacity: 1;
    z-index: 6;
  }

  /* 魚群剪影手機版微調 (特別讓 bg_fish-r.png 不被兩隻鯨魚壓蓋) */
  .fish-tl {
    width: 24vw;
    top: 18vw;
    left: 3vw;
    right: auto;
  }

  .fish-tr {
    width: 30vw;
    top: 21vw;
    right: 0;
  }

  /* 右側大藍鯨插畫：置於書名右下與副標題右側開闊海域，完全不與下方兩隻抹香鯨主視覺重疊 */
  .fish-r {
    width: 35vw;
    top: 45vw;
    right: 0;
  }

  .fish-br-02 {
    display: block;
    width: 28vw;
    bottom: 12vw;
    right: 0;
  }

  .fish-br-01 {
    width: 34vw;
    bottom: 0;
    right: 0;
  }

  /* 頁面中段魚群剪影在手機版隱藏以維持清爽 */
  .page-ambient-fish {
    display: none;
  }

  /* Footer 魚群裝飾 手機版微調 */
  .footer-fish-bl {
    width: 50vw;
    left: 2vw;
    bottom: 0;
  }

  /* Story */
  .story-left { width: 90%; flex: 0 0 auto; margin-bottom: 6vw; }
  .story-left .book { max-width: 260px; margin-bottom: 3vw; }
  .story-left .price { font-size: 4.2vw; margin-bottom: 3vw; }
  .book-notice { font-size: 3.2vw; margin-top: 2.5vw; white-space: normal; }
  .story-gift-box { max-width: 300px; width: 100%; margin: 5vw auto 0; padding: 5vw 4vw 4vw; border-radius: 18px; }
  .gift-header { gap: 1.8vw; margin-bottom: 3.5vw; }
  .gift-badge { font-size: 3.4vw; padding: 1vw 3.5vw; border-radius: 24px; }
  .gift-name { font-size: 4.8vw; }
  .gift-img-wrap { max-width: 230px; }
  .story-right { font-size: 3.8vw; }
  .story-main-title {
    font-size: 5.4vw;
    margin-bottom: 2.5vw;
    text-align: center;
  }
  .story-sub-title {
    font-size: 3.8vw;
    margin-bottom: 4.5vw;
    text-align: center;
  }
  .story-desc p { font-size: 3.8vw; line-height: 1.95; margin-bottom: 4vw; }

  /* Animation (手機版影片卡片) */
  .animation-grid {
    grid-template-columns: 1fr;
    gap: 6vw;
  }

  .video-card {
    border-radius: 4vw;
    box-shadow: 0 1.5vw 4vw rgba(10, 37, 72, 0.12);
  }

  .video-badge {
    font-size: 4vw;
    padding: 2.5vw 4vw;
  }

  .video-info {
    padding: 4vw 5%;
  }

  .video-info h4 {
    font-size: 4.5vw;
    margin-bottom: 1.5vw;
  }

  .video-info p {
    font-size: 3.6vw;
    line-height: 1.6;
  }

  /* Audio */
  .audio-section { margin-top: 8vw; }
  .audio-title { font-size: 5vw; margin-bottom: 3vw; }
  .audio-player { width: 80vw; }

  /* Coming soon placeholder (手機) */
  .coming-soon,
  .animation-grid > div:not(.video-card),
  .audio-section > div:not(.audio-player) {
    font-size: 4vw;
    border-radius: 14px;
    letter-spacing: 0.08em;
  }
  .animation-grid .coming-soon,
  .animation-grid > div:not(.video-card) {
    min-height: 160px;
    padding: 7vw 5vw;
    max-width: 100%;
  }
  .animation-grid .coming-soon::before,
  .animation-grid > div:not(.video-card)::before {
    width: 8vw;
    height: 8vw;
    min-width: 32px;
    min-height: 32px;
    margin-bottom: 3vw;
  }
  .audio-section .coming-soon,
  .audio-section > div:not(.audio-player) {
    min-height: 90px;
    padding: 5vw 4vw;
    max-width: 85vw;
  }
  .audio-section .coming-soon::before,
  .audio-section > div:not(.audio-player)::before {
    width: 7vw;
    height: 7vw;
    min-width: 28px;
    min-height: 28px;
    margin-bottom: 2vw;
  }

  /* Read */
  .read-gallery { flex-direction: column; gap: 4vw; }
  .read-item { width: 100%; margin-bottom: 0; }
  .zoom-overlay { width: 14vw; height: 14vw; min-width: 52px; min-height: 52px; max-width: 65px; max-height: 65px; }
  .zoom-icon { width: 5vw; height: 5vw; min-width: 20px; min-height: 20px; margin-bottom: 0.3vw; }
  .zoom-text { font-size: 2.5vw; min-font-size: 11px; }

  /* Author (手機版由上至下排列：照片 -> 姓名 (放大) -> 簡介) */
  .author-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3.5vw;
    margin-bottom: 9vw;
    text-align: center;
  }
  .author-info:not(:last-child) {
    padding-bottom: 9vw;
    border-bottom: 0.25vw dashed rgba(14, 69, 141, 0.25);
  }
  .author-left {
    width: 100%;
    flex: 0 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    margin-bottom: 1.5vw;
  }
  .author-avatar {
    width: 135px;
    height: 135px;
    border-radius: 50%;
    border: 3.5px solid #fff;
    box-shadow: 0 1vw 3vw rgba(10, 35, 75, 0.2);
    margin: 0 auto 2.5vw;
  }
  .author-title-name {
    font-size: 5.2vw;
    font-weight: 700;
    color: #0E458D;
    line-height: 1.4;
    letter-spacing: 0.06em;
    margin: 0;
    text-align: center;
    white-space: normal;
  }
  .author-bio {
    width: 100%;
  }
  .author-bio p {
    font-size: 3.7vw;
    line-height: 1.95;
    color: #334155;
    margin-bottom: 3vw;
    text-align: justify;
    letter-spacing: 0.02em;
  }

  /* Footer */
  .footer { font-size: 3.5vw; padding: 8vw 5%; line-height: 2; }
  .footer .social {
    font-size: 3.4vw;
    margin-bottom: 5vw;
    line-height: 2;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 1vw 1.5vw;
  }
  .footer .social a { margin: 0; }
  .footer .separator { margin: 0; color: rgba(0, 0, 0, 0.25); }
  .footer-logo-group {
    gap: 6vw;
    margin-bottom: 5vw;
  }
  .footer-logo-namr img {
    height: 15vw;
    min-height: 55px;
    max-height: 75px;
  }
  .footer-logo-gkids img {
    height: 9vw;
    min-height: 32px;
    max-height: 45px;
  }
  .footer-copyright {
    font-size: 3.2vw;
    line-height: 2;
  }
}