@charset "UTF-8";
@import url("reset.css");

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

html,body{
    width: 100%;
	letter-spacing: 1px;
}


/* 區塊容器 */
.ibon-tutorial {
	max-width: 1200px;
	margin: 70px auto;
	background: #fff;
	border-radius: 8px;
	padding: 20px;
  	/* box-shadow: 0 6px 20px rgba(18, 38, 63, 0.08); */
}

/* 標題 */
.ibon-tutorial h1 {
	color: #00a19b;
	margin: 50px auto;
	text-align: center;
	font-size: 1.5rem;
}
.section-desc {
	margin: 0 0 16px;
	color: #555;
	font-size: 0.95rem;
}

/* Grid 排版：響應式 */
.tutorial-grid {
	display: grid;
	gap: 16px;
  /* 手機預設一欄 */
	grid-template-columns: 1fr;
}

/* 平板以上兩欄，桌面三欄 */
@media (min-width: 600px) {
	.tutorial-grid {
		grid-template-columns: repeat(2, 1fr);
	}
}
@media (min-width: 960px) {
	.tutorial-grid {
		grid-template-columns: repeat(3, 1fr);
	}
}

/* 卡片樣式 */
.tutorial-card {
	background: #fff;
	border-radius: 8px;
	overflow: hidden;
	border: 1px solid #e6e9ee;
	transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.tutorial-card:hover,
.tutorial-card:focus-within {
	transform: translateY(-6px);
	box-shadow: 0 12px 28px rgba(18, 38, 63, 0.08);
}

/* 圖片容器確保比例 */
.tutorial-card figure {
	margin: 0;
	display: flex;
	flex-direction: column;
	height: 100%;
}
.tutorial-card img {
	display: block;
	width: 100%;
	height: auto;
	object-fit: cover;
	aspect-ratio: 4 / 3; /* 確保一致的長寬比 */
	background: #ddd;
}

/* 說明文字區塊 */
figcaption {
	padding: 12px;
	background: linear-gradient(180deg, rgba(255,255,255,0.9), rgba(255,255,255,0.95));
}
.caption-text {
	margin: 0 0 6px;
	font-size: 0.95rem;
	color: #333;
}
.caption-author {
	margin: 0;
	font-size: 0.85rem;
	color: #888;
	text-align: right;
}

/* 可選：圖片點擊呈現 focus 樣式（便於鍵盤使用者） */
.tutorial-card a,
.tutorial-card img {
	outline: none;
}
.tutorial-card img:focus {
	box-shadow: 0 0 0 3px rgba(63, 132, 255, 0.2);
}

/* 輔助：在窄螢幕增加內邊距 */
@media (max-width: 420px) {
	.ibon-tutorial {
		padding: 12px;
	}
	.section-header h1 {
		font-size: 1.25rem;
	}
}