/* ===== intro-section ===== */
.intro-section { position: relative; padding: 100px 0; background-color: #0F172B; background-image: linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px); background-size: 40px 40px; }

/* heading */
.intro-section .intro-inner .intro-heading { text-align: center; margin-bottom: 40px; }
.intro-section .intro-inner .intro-lead { font-size: 2.9rem; color: rgba(255,255,255,0.75); line-height: 1.7; word-break: keep-all; }
.intro-section .intro-inner .intro-lead strong { color: #5b9fff; font-weight: 700; }
.intro-section .intro-inner .intro-lead .intro-lead-strong { font-size: 2.8rem; color: #fff; font-weight: 800; }

/* list */
.intro-section .intro-inner .intro-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.intro-section .intro-inner .intro-item { background: #1B2336; border: 1px solid #333A4B; border-radius: 24px; padding: 50px 40px 44px; text-align: center; }
.intro-section .intro-inner .intro-item .intro-icon { display: inline-flex; align-items: center; justify-content: center; width: 65px; height: 65px;  border-radius: 20px; margin-bottom: 36px; }
.intro-section .intro-inner .intro-item .intro-icon img { width: 100%; height: 100%; }
.intro-section .intro-inner .intro-item .eng { font-size: 1.4rem; font-weight: 700; color: #5b9fff; letter-spacing: 3px; margin-bottom: 5px; }
.intro-section .intro-inner .intro-item .title { position: relative; font-size: 2.6rem; font-weight: 700; color: #fff; margin-bottom: 30px; word-break: keep-all; display: inline-block; }
.intro-section .intro-inner .intro-item .title::after { content: ''; position: absolute; bottom: -7px; left: 0; width: 100%; height: 5px; background: #1B2D58; }
.intro-section .intro-inner .intro-item .desc { font-size: 1.7rem; color: #8898B1; line-height: 1.8; word-break: keep-all; }

/* ===== responsive ===== */
@media (max-width: 1280px) {
	.intro-section { padding: 80px 0; }
	.intro-section .intro-inner .intro-heading { margin-bottom: 32px; }
	.intro-section .intro-inner .intro-lead { font-size: 2.2rem; }
	.intro-section .intro-inner .intro-lead .intro-lead-strong { font-size: 2.4rem; }
	.intro-section .intro-inner .intro-list { gap: 16px; }
	.intro-section .intro-inner .intro-item { padding: 40px 28px 36px; }
	.intro-section .intro-inner .intro-item .intro-icon { width: 56px; height: 56px; margin-bottom: 28px; }
	.intro-section .intro-inner .intro-item .eng { font-size: 1.3rem; }
	.intro-section .intro-inner .intro-item .title { font-size: 2.2rem; margin-bottom: 20px; }
	.intro-section .intro-inner .intro-item .desc { font-size: 1.55rem; }
}

@media (max-width: 768px) {
	.intro-section { padding: 60px 0; }
	.intro-section .intro-inner .intro-heading { margin-bottom: 28px; }
	.intro-section .intro-inner .intro-lead { font-size: 2rem; }
	.intro-section .intro-inner .intro-lead .intro-lead-strong { font-size: 2rem; }
	.intro-section .intro-inner .intro-list { grid-template-columns: repeat(2, 1fr); gap: 12px; }
	.intro-section .intro-inner .intro-item { padding: 28px 20px 24px; text-align: left; display: flex; flex-direction: column; align-items: flex-start; }
	.intro-section .intro-inner .intro-item .intro-icon { width: 48px; height: 48px; margin-bottom: 16px; }
	.intro-section .intro-inner .intro-item .eng { font-size: 1.2rem; }
	.intro-section .intro-inner .intro-item .title { font-size: 2rem; margin-bottom: 16px; }
	.intro-section .intro-inner .intro-item .desc { font-size: 1.5rem; }
}

@media (max-width: 480px) {
	.intro-section { padding: 48px 0; }
	.intro-section .intro-inner .intro-lead { font-size: 1.8rem; }
	.intro-section .intro-inner .intro-lead br { display: none; }
	.intro-section .intro-inner .intro-lead .intro-lead-strong { font-size: 1.8rem; }
	.intro-section .intro-inner .intro-list { grid-template-columns: 1fr; gap: 0; border-bottom: 1px solid #333A4B; border-radius: 24px; overflow: hidden; }
	.intro-section .intro-inner .intro-list .intro-item { padding: 18px; border-radius: 0; border-bottom: 0; }
	.intro-section .intro-inner .intro-list .intro-item .intro-icon { width: 35px; height: 35px; margin-bottom: 12px; }
	.intro-section .intro-inner .intro-list .intro-item .title { font-size: 1.7rem; margin-bottom: 12px; }
	.intro-section .intro-inner .intro-list .intro-item .desc { font-size: 1.3rem; }
}