:root {
  --default-font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --heading-font: "Satoshi", "Raleway", sans-serif;
  --nav-font: "Poppins", sans-serif;

  /* Core Colors */
  --background-color: #F8F9FA;      /* 거의 흰색에 가까운 부드러운 배경색 */
  --surface-color: #FFFFFF;         /* 카드, 섹션 등 콘텐츠 영역의 순백색 */
  --accent-color: #007BFF;          /* 선명하고 신뢰감 있는 파란색 포인트 */
  
  --heading-color: #212529;         /* 제목에 사용할 짙은 회색 (가독성 확보) */
  --default-color: #495057;         /* 본문에 사용할 부드러운 회색 */
  --contrast-color: #FFFFFF;        /* 포인트 색상 위의 텍스트 (주로 흰색) */
  
  --border-color: #DEE2E6;          /* 은은한 테두리 및 구분선 색상 */

  --nav-color: #495057;             /* 기본 네비게이션 텍스트 색상 */
  --nav-hover-color: #007BFF;       /* 호버 시 포인트 색상으로 변경 */
  --nav-mobile-background-color: #FFFFFF;
  --nav-dropdown-background-color: #FFFFFF;
  --nav-dropdown-color: #495057;
  --nav-dropdown-hover-color: #007BFF;

  --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* light-background는 이제 기본값과 거의 유사해집니다. */
.light-background {
  --background-color: #F8F9FA;
  --surface-color: #FFFFFF;
}

.dark-background {
  --background-color: #040b14;
  --default-color: #ffffff;
  --heading-color: #ffffff;
  --surface-color: #151f2b;
  --contrast-color: #ffffff;
}
:root {
scroll-behavior: smooth;
}
/* *::before,
*::after {
  box-sizing: border-box;
} */
body { margin: 0px; font-family: var(--bs-body-font-family); font-size: var(--bs-body-font-size); font-weight: var(--bs-body-font-weight); line-height: var(--bs-body-line-height); color: var(--bs-body-color); text-align: var(--bs-body-text-align); background-color: var(--bs-body-bg); text-size-adjust: 100%; -webkit-tap-highlight-color: transparent; }
hr { margin: 1rem 0px; color: inherit; border-right: 0px; border-bottom: 0px; border-left: 0px; border-image: initial; border-top: var(--bs-border-width) solid; opacity: 0.25; }
.h1, .h2, .h3, .h4, .h5, .h6, h1, h2, h3, h4, h5, h6 { margin-top: 0px; margin-bottom: 0.5rem; font-weight: 500; line-height: 1.2; color: var(--bs-heading-color); }
.h1, h1 { font-size: calc(1.375rem + 1.5vw); }
@media (min-width: 1200px) {
.h1, h1 { font-size: 2.5rem; }
}
.h2, h2 { font-size: calc(1.325rem + 0.9vw); }
@media (min-width: 1200px) {
.h2, h2 { font-size: 2rem; }
}
.h3, h3 { font-size: calc(1.3rem + 0.6vw); }
@media (min-width: 1200px) {
.h3, h3 { font-size: 1.75rem; }
}
.h4, h4 { font-size: calc(1.275rem + 0.3vw); }
@media (min-width: 1200px) {
.h4, h4 { font-size: 1.5rem; }
}
.h5, h5 { font-size: 1.25rem; }
.h6, h6 { font-size: 1rem; }
p { margin-top: 0px; margin-bottom: 1rem; }
ol, ul { padding-left: 2rem; }
dl, ol, ul { margin-top: 0px; margin-bottom: 1rem; }
ol ol, ol ul, ul ol, ul ul { margin-bottom: 0px; }
b, strong { font-weight: bolder; }
a { color: rgba(var(--bs-link-color-rgb),var(--bs-link-opacity,1)); text-decoration: underline; }
a:hover { --bs-link-color-rgb: var(--bs-link-hover-color-rgb); }
img, svg { vertical-align: middle; }
button { border-radius: 0px; }
button, input, optgroup, select, textarea { margin: 0px; font-family: inherit; font-size: inherit; line-height: inherit; }
button, select { text-transform: none; }
[role="button"] { cursor: pointer; }
[type="button"], [type="reset"], [type="submit"], button { appearance: button; }
[type="button"]:not(:disabled), [type="reset"]:not(:disabled), [type="submit"]:not(:disabled), button:not(:disabled) { cursor: pointer; }
.lead { font-size: 1.25rem; font-weight: 300; }
.img-fluid { max-width: 100%; height: auto; }
.container, .container-fluid, .container-lg, .container-md, .container-sm, .container-xl, .container-xxl { --bs-gutter-x: 1.5rem; --bs-gutter-y: 0; width: 100%; padding-right: calc(var(--bs-gutter-x) * .5); padding-left: calc(var(--bs-gutter-x) * .5); margin-right: auto; margin-left: auto; }
@media (min-width: 576px) {
.container, .container-sm { max-width: 540px; }
}
@media (min-width: 768px) {
.container, .container-md, .container-sm { max-width: 720px; }
}
@media (min-width: 992px) {
.container, .container-lg, .container-md, .container-sm { max-width: 960px; }
}
@media (min-width: 1200px) {
.container, .container-lg, .container-md, .container-sm, .container-xl { max-width: 1140px; }
}
@media (min-width: 1400px) {
.container, .container-lg, .container-md, .container-sm, .container-xl, .container-xxl { max-width: 1320px; }
}
:root { --bs-breakpoint-xs: 0; --bs-breakpoint-sm: 576px; --bs-breakpoint-md: 768px; --bs-breakpoint-lg: 992px; --bs-breakpoint-xl: 1200px; --bs-breakpoint-xxl: 1400px; }
.row { --bs-gutter-x: 1.5rem; --bs-gutter-y: 0; display: flex; flex-wrap: wrap; margin-top: calc(-1 * var(--bs-gutter-y)); margin-right: calc(-.5 * var(--bs-gutter-x)); margin-left: calc(-.5 * var(--bs-gutter-x)); }
.row > * { flex-shrink: 0; width: 100%; max-width: 100%; padding-right: calc(var(--bs-gutter-x) * .5); padding-left: calc(var(--bs-gutter-x) * .5); margin-top: var(--bs-gutter-y); }
.col-10 { flex: 0 0 auto; width: 83.3333%; }
.col-12 { flex: 0 0 auto; width: 100%; }
.g-4, .gy-4 { --bs-gutter-y: 1.5rem; }
@media (min-width: 576px) {
.col-sm-6 { flex: 0 0 auto; width: 50%; }
}
@media (min-width: 992px) {
.col-lg-4 { flex: 0 0 auto; width: 33.3333%; }
.col-lg-6 { flex: 0 0 auto; width: 50%; }
.col-lg-8 { flex: 0 0 auto; width: 66.6667%; }
}
.btn { --bs-btn-padding-x: 0.75rem; --bs-btn-padding-y: 0.375rem; --bs-btn-font-family: ; --bs-btn-font-size: 1rem; --bs-btn-font-weight: 400; --bs-btn-line-height: 1.5; --bs-btn-color: var(--bs-body-color); --bs-btn-bg: transparent; --bs-btn-border-width: var(--bs-border-width); --bs-btn-border-color: transparent; --bs-btn-border-radius: var(--bs-border-radius); --bs-btn-hover-border-color: transparent; --bs-btn-box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.15),0 1px 1px rgba(0, 0, 0, 0.075); --bs-btn-disabled-opacity: 0.65; --bs-btn-focus-box-shadow: 0 0 0 0.25rem rgba(var(--bs-btn-focus-shadow-rgb), .5); display: inline-block; padding: var(--bs-btn-padding-y) var(--bs-btn-padding-x); font-family: var(--bs-btn-font-family); font-size: var(--bs-btn-font-size); font-weight: var(--bs-btn-font-weight); line-height: var(--bs-btn-line-height); color: var(--bs-btn-color); text-align: center; text-decoration: none; vertical-align: middle; cursor: pointer; user-select: none; border: var(--bs-btn-border-width) solid var(--bs-btn-border-color); border-radius: var(--bs-btn-border-radius); background-color: var(--bs-btn-bg); transition: color 0.2s ease, background-color 0.2s ease-in-out, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease; }
.btn:hover{transform: translateY(-1px) 0.3s ease; box-shadow: 0 4px 8px rgba(0,0,0,0.15);}
@media (prefers-reduced-motion: reduce) {
.btn { transition: none; }
}
.btn-dark { --bs-btn-color: #fff; --bs-btn-bg: #212529; --bs-btn-border-color: #212529; --bs-btn-hover-color: #fff; --bs-btn-hover-bg: #424649; --bs-btn-hover-border-color: #373b3e; --bs-btn-focus-shadow-rgb: 66,70,73; --bs-btn-active-color: #fff; --bs-btn-active-bg: #4d5154; --bs-btn-active-border-color: #373b3e; --bs-btn-active-shadow: inset 0 3px 5px rgba(0, 0, 0, 0.125); --bs-btn-disabled-color: #fff; --bs-btn-disabled-bg: #212529; --bs-btn-disabled-border-color: #212529; }
.btn-outline-dark { --bs-btn-color: #212529; --bs-btn-border-color: #212529; --bs-btn-hover-color: #fff; --bs-btn-hover-bg: #212529; --bs-btn-hover-border-color: #212529; --bs-btn-focus-shadow-rgb: 33,37,41; --bs-btn-active-color: #fff; --bs-btn-active-bg: #212529; --bs-btn-active-border-color: #212529; --bs-btn-active-shadow: inset 0 3px 5px rgba(0, 0, 0, 0.125); --bs-btn-disabled-color: #212529; --bs-btn-disabled-bg: transparent; --bs-btn-disabled-border-color: #212529; --bs-gradient: none; }
.btn-group-sm > .btn, .btn-sm { --bs-btn-padding-y: 0.25rem; --bs-btn-padding-x: 0.5rem; --bs-btn-font-size: 0.875rem; --bs-btn-border-radius: var(--bs-border-radius-sm); }
.badge { --bs-badge-padding-x: 0.65em; --bs-badge-padding-y: 0.35em; --bs-badge-font-size: 0.75em; --bs-badge-font-weight: 700; --bs-badge-color: #fff; --bs-badge-border-radius: var(--bs-border-radius); display: inline-block; padding: var(--bs-badge-padding-y) var(--bs-badge-padding-x); font-size: var(--bs-badge-font-size); font-weight: var(--bs-badge-font-weight); line-height: 1; color: var(--bs-badge-color); text-align: center; white-space: nowrap; vertical-align: baseline; border-radius: var(--bs-badge-border-radius); }
.text-bg-primary { color: rgb(255, 255, 255) !important; background-color: RGBA(var(--bs-primary-rgb),var(--bs-bg-opacity,1)) !important; }
.text-bg-secondary { color: rgb(255, 255, 255) !important; background-color: RGBA(var(--bs-secondary-rgb),var(--bs-bg-opacity,1)) !important; }
.text-bg-success { color: rgb(255, 255, 255) !important; background-color: RGBA(var(--bs-success-rgb),var(--bs-bg-opacity,1)) !important; }
.d-inline-block { display: inline-block !important; }
.d-flex { display: flex !important; }
.position-relative { position: relative !important; }
.flex-column { flex-direction: column !important; }
.justify-content-center { justify-content: center !important; }
.justify-content-between { justify-content: space-between !important; }
.align-items-center { align-items: center !important; }
.me-2 { margin-right: 0.5rem !important; }
.mb-0 { margin-bottom: 0px !important; }
.mb-1 { margin-bottom: 0.25rem !important; }
.mb-4 { margin-bottom: 1.5rem !important; }
.px-1 { padding-right: 0.25rem !important; padding-left: 0.25rem !important; }
.px-3 { padding-right: 1rem !important; padding-left: 1rem !important; }
.py-2 { padding-top: 0.5rem !important; padding-bottom: 0.5rem !important; }
.py-3 { padding-top: 1rem !important; padding-bottom: 1rem !important; }
.pb-0 { padding-bottom: 0px !important; }
.fst-italic { font-style: italic !important; }
.text-center { text-align: center !important; }
.text-white-50 { --bs-text-opacity: 1; color: rgba(255, 255, 255, 0.5) !important; }
.rounded-circle { border-radius: 50% !important; }
@media (min-width: 1200px) {
.d-xl-none { display: none !important; }
}
[data-aos][data-aos][data-aos-delay="100"], body[data-aos-delay="100"] [data-aos] { transition-delay: 0s; }
[data-aos][data-aos][data-aos-delay="100"].aos-animate, body[data-aos-delay="100"] [data-aos].aos-animate { transition-delay: 0.1s; }
[data-aos][data-aos][data-aos-delay="200"], body[data-aos-delay="200"] [data-aos] { transition-delay: 0s; }
[data-aos][data-aos][data-aos-delay="200"].aos-animate, body[data-aos-delay="200"] [data-aos].aos-animate { transition-delay: 0.2s; }
[data-aos][data-aos][data-aos-duration="600"], body[data-aos-duration="600"] [data-aos] { transition-duration: 0.6s; }
[data-aos] { pointer-events: none; }
[data-aos].aos-animate { pointer-events: auto; }
[data-aos][data-aos][data-aos-easing="ease-in-out"], body[data-aos-easing="ease-in-out"] [data-aos] { transition-timing-function: ease-in-out; }
@media screen {
html:not(.no-js) [data-aos^="fade"][data-aos^="fade"] { opacity: 0; transition-property: opacity, transform, -webkit-transform; }
html:not(.no-js) [data-aos^="fade"][data-aos^="fade"].aos-animate { opacity: 1; transform: none; }
html:not(.no-js) [data-aos="fade-up"] { transform: translate3d(0px, 100px, 0px); }
}
:root { --swiper-theme-color: #007aff; }
.swiper { margin-left: auto; margin-right: auto; position: relative; overflow: hidden; list-style: none; padding: 0px; z-index: 1; display: block; }
.swiper-wrapper { position: relative; width: 100%; height: 100%; z-index: 1; display: flex; transition-property: transform; transition-timing-function: var(--swiper-wrapper-transition-timing-function,initial); box-sizing: content-box; }
.swiper-android .swiper-slide, .swiper-ios .swiper-slide, .swiper-wrapper { transform: translate3d(0px, 0px, 0px); }
.swiper-horizontal { touch-action: pan-y; }
.swiper-slide { flex-shrink: 0; width: 100%; height: 100%; position: relative; transition-property: transform; display: block; }
.swiper-backface-hidden .swiper-slide { transform: translateZ(0px); backface-visibility: hidden; }
:root { --swiper-navigation-size: 44px; }
.swiper-pagination { position: absolute; text-align: center; transition: opacity 0.3s; transform: translate3d(0px, 0px, 0px); z-index: 10; }
.swiper-horizontal > .swiper-pagination-bullets, .swiper-pagination-bullets.swiper-pagination-horizontal, .swiper-pagination-custom, .swiper-pagination-fraction { bottom: var(--swiper-pagination-bottom,8px); top: var(--swiper-pagination-top,auto); left: 0px; width: 100%; }
.swiper-pagination-bullet { width: var(--swiper-pagination-bullet-width,var(--swiper-pagination-bullet-size,8px)); height: var(--swiper-pagination-bullet-height,var(--swiper-pagination-bullet-size,8px)); display: inline-block; border-radius: var(--swiper-pagination-bullet-border-radius,50%); background: var(--swiper-pagination-bullet-inactive-color,#000); opacity: var(--swiper-pagination-bullet-inactive-opacity, .2); }
.swiper-pagination-clickable .swiper-pagination-bullet { cursor: pointer; }
.swiper-pagination-bullet-active { opacity: var(--swiper-pagination-bullet-opacity, 1); background: var(--swiper-pagination-color,var(--swiper-theme-color)); }
.swiper-horizontal > .swiper-pagination-bullets .swiper-pagination-bullet, .swiper-pagination-horizontal.swiper-pagination-bullets .swiper-pagination-bullet { margin: 0 var(--swiper-pagination-bullet-horizontal-gap,4px); }
.swiper .swiper-notification { position: absolute; left: 0px; top: 0px; pointer-events: none; opacity: 0; z-index: -1000; }
:root { --default-font: "Roboto",  system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; --heading-font: "Raleway",  sans-serif; --nav-font: "Poppins",  sans-serif; }
:root { --background-color: #ffffff; --default-color: #272829; --heading-color: #050d18; --accent-color: #149ddd; --surface-color: #ffffff; --contrast-color: #ffffff; }
:root { --nav-color: #a8a9b4; --nav-hover-color: #ffffff; --nav-mobile-background-color: #040b14; --nav-dropdown-background-color: #040b14; --nav-dropdown-color: #a8a9b4; --nav-dropdown-hover-color: #ffffff; }
.light-background { --background-color: #f4fafd; --surface-color: #ffffff; }
.dark-background { --background-color: #040b14; --default-color: #ffffff; --heading-color: #ffffff; --surface-color: #151f2b; --contrast-color: #ffffff; }
body { color: var(--default-color); background-color: var(--background-color); font-family: var(--default-font); }
a { color: var(--accent-color); text-decoration: none; transition: 0.3s; }
a:hover { color: color-mix(in srgb, var(--accent-color), transparent 25%); text-decoration: none; }
h1, h2, h3, h4, h5, h6 { color: var(--heading-color); font-family: var(--heading-font); }
.mobile-topbar .header-toggle { color: var(--contrast-color); visibility: hidden; opacity: 0; background-color: var(--accent-color); font-size: 22px; display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 50%; cursor: pointer; position: fixed; top: 15px; right: 15px; z-index: 9999; transition: background-color 0.3s; }
.mobile-topbar .header-toggle:hover {color: var(--contrast-color); background-color: color-mix(in srgb, var(--accent-color) 90%, white 15%);}
.mobile-topbar .header-toggle.active {
  visibility: visible;
  opacity: 1;
}
.header { color: var(--default-color); background-color: var(--background-color); position: fixed; top: 0px; left: 0px; bottom: 0px; padding: 0px 15px; width: 300px; transition: 0.3s ease-in-out; overflow-y: auto; z-index: 997; border-right: 1px solid color-mix(in srgb, var(--default-color), transparent 90%); }
.header .profile-img img { margin: 15px auto; display: block; width: 120px; border: 8px solid color-mix(in srgb, var(--default-color), transparent 85%); align-items: center; justify-content: center; }
.header .logo { line-height: 1; margin-bottom: 15px; }
.header .logo h1 { font-size: 24px; margin: 0px; font-weight: 700; color: var(--heading-color); }
.header .social-links { margin: 0px 0px 20px; }
.header .social-links a { font-size: 16px; display: inline-flex; align-items: center; justify-content: center; background: color-mix(in srgb, var(--default-color), transparent 90%); color: var(--default-color); margin: 0px 2px; border-radius: 50%; text-align: center; width: 40px; height: 40px; transition: 0.3s; }
.header .social-links a:hover {color: var(--contrast-color); background: var(--accent-color); transform: translateY(-1px) 0.3s ease;}
@media (min-width: 1200px) {
.header ~ main, .header ~ #footer { margin-left: 300px; }
}
@media (min-width: 1200px) {
.header ~ main, .header ~ #footer {margin-left: 300px; transition: margin-left 0.3s ease; }
.header.hidden {transform: translateX(-100%) 0.3s ease; }
.header.hidden ~ main, .header.hidden ~ #footer {margin-left: 0;}
}
@media (max-width: 1199px) {
  .header {
    position: fixed; 
    top: 0;
    left: 0;
    width: 300px; 
    height: 100%;
    z-index: 1000; 
    transition: left 0.3s ease;
  }
  .header.hidden {
    left: -100%;
  }
}
.header .header-toggle { color: var(--contrast-color); background-color: var(--accent-color); font-size: 22px; display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 50%; cursor: pointer; position: fixed; top: 15px; right: 15px; z-index: 9999; transition: background-color 0.3s; }
.header .header-toggle:hover {color: var(--contrast-color); background-color: color-mix(in srgb, var(--accent-color) 90%, white 15%);}
.mobile-nav-toggle {display: none;}
.navmenu {padding: 0;z-index: 9997;}
.navmenu ul {list-style: none; padding: 0 0 20px 0;margin: 0;}
.navmenu a,
.navmenu a:focus {color: var(--nav-color); padding: 15px 10px; font-family: var(--nav-font); font-size: 16px; font-weight: 400; display: flex;
align-items: center;
white-space: nowrap;
transition: 0.3s;
width: 100%;
}

.navmenu a .navicon,
.navmenu a:focus .navicon {
font-size: 20px;
margin-right: 10px;
}

.navmenu a .toggle-dropdown,
.navmenu a:focus .toggle-dropdown {
font-size: 12px;
line-height: 0;
margin-left: auto;
width: 30px;
height: 30px;
display: flex;
align-items: center;
justify-content: center;
border-radius: 50%;
transition: 0.3s;
flex-shrink: 0;
background-color: color-mix(in srgb, var(--accent-color), transparent 90%);
}

.navmenu a .toggle-dropdown:hover,
.navmenu a:focus .toggle-dropdown:hover {
background-color: var(--accent-color);
color: var(--contrast-color);
}

.navmenu a:hover,
.navmenu .active,
.navmenu .active:focus {
color: var(--nav-hover-color);
}

.navmenu a:hover .navicon,
.navmenu .active .navicon,
.navmenu .active:focus .navicon {
color: var(--accent-color);
}

.navmenu .active .toggle-dropdown,
.navmenu .active:focus .toggle-dropdown {
background-color: var(--accent-color);
color: var(--contrast-color);
transform: rotate(180deg);
}

.navmenu .dropdown {
display: block;
}

.navmenu .dropdown a,
.navmenu .dropdown a:focus {
color: --nav-dropdown-color;
}

.navmenu .dropdown a:hover,
.navmenu .dropdown .active,
.navmenu .dropdown .active:focus {
color: var(--nav-dropdown-hover-color);
}

.navmenu .dropdown ul {
position: static;
display: none;
z-index: 99;
padding: 5px 10px;
margin: 5px 10px;
background-color: var(--nav-dropdown-background-color);
border: 1px solid color-mix(in srgb, var(--default-color), transparent 90%);
box-shadow: none;
transition: all 0.5s ease-in-out;
}

.navmenu .dropdown ul ul {
background-color: rgba(33, 37, 41, 0.1);
}

.navmenu .dropdown>.dropdown-active {
display: block;
background-color: rgba(33, 37, 41, 0.03);
}

.footer { color: var(--default-color); background-color: var(--background-color); font-size: 14px; padding: 40px 0px; position: relative; border-top: 1px solid color-mix(in srgb, var(--default-color), transparent 90%); }
.footer .copyright p { margin-bottom: 0px; }
@media screen and (max-width: 768px) {
[data-aos-delay] { transition-delay: 0 !important; }
}
section, .section { color: var(--default-color); background-color: var(--background-color); padding: 80px 1rem; overflow: clip; }
.section-title { padding-bottom: 40px; position: relative; }
.section-title h2 { font-size: 32px; font-weight: 700; margin-bottom: 20px; padding-bottom: 20px; position: relative; display: inline-block; }
.section-title h2::after {
    content: '';
    position: absolute;
    display: block;
    width: 90%;
    height: 3px;
    background: var(--accent-color);
    bottom: 0;
    left: 0;
}
.section-title p { margin-bottom: 0px; }
.hero { width: 100%; min-height: 100vh; position: relative; padding: 80px 0px; display: flex; align-items: center; justify-content: center; }
.hero img {transition: 0.3s ease; position: absolute; top: -1.5rem; left:2rem; justify-content: center; display: block; width: 100%; height: 100%; object-fit: cover; z-index: 1; background: linear-gradient(135deg, rgb(15, 23, 42) 0%, rgb(30, 41, 59) 100%); }
@media (max-width: 1200px) {
.hero img { object-position: 75% 50%; display: none; }
}
.hero p { margin: 5px 0px 0px; font-size: 1.5rem; }
.hero p span { letter-spacing: 1px; border-bottom: 2px solid var(--accent-color); }
.hero .social-links { margin-top: 25px; }
.hero .social-links a { font-size: 24px; display: inline-block; color: color-mix(in srgb, var(--default-color), transparent 50%); line-height: 1; margin-right: 20px; transition: 0.3s; }
@media (max-width: 768px) {
.hero p { font-size: 20px; }
}
.about .content h2 { font-weight: 700; font-size: 24px; }
.about .content ul { list-style: none; padding: 0px; }
.about .content ul li { margin-bottom: 20px; display: flex; align-items: center; }
.about .content ul strong { margin-right: 10px; }
.about .content ul i { font-size: 16px; margin-right: 5px; color: var(--accent-color); line-height: 0; }
.resume .resume-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  margin-top: 1rem;
  /* border-bottom: 1px solid var(--border-color); */
}
.resume .resume-item {
  padding: 0 0 20px 20px;
  margin-top: -2px;
  border-left: 2px solid var(--accent-color);
  position: relative;
}
.resume .resume-item::before {
  content: "";
  position: absolute;
  left: -9px;
  top: 0;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid var(--accent-color);
  background: var(--background-color);
}
.resume .resume-item h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--heading-color);
}
.resume .resume-item h5 {
  font-size: 0.9rem;
  background: #efefef;
  padding: 5px 15px;
  display: inline-block;
  font-weight: 600;
  margin-bottom: 10px;
  border-radius: 5px;
  /* color: var(--secondary-color); */
}
.resume .resume-item ul { padding-left: 20px; }
.resume .resume-item ul li { padding-bottom: 10px; }
.resume .resume-item:last-child { padding-bottom: 0px; }
.portfolio .portfolio-filters { padding: 0px; margin: 0px auto 20px; list-style: none; text-align: center; }
.portfolio .portfolio-filters li { cursor: pointer; display: inline-block; padding: 0px; font-size: 14px; font-weight: 400; margin: 0px 10px 10px; line-height: 1; text-transform: uppercase; transition: 0.3s ease-in-out; }
.portfolio .portfolio-filters li:hover, .portfolio .portfolio-filters li.filter-active { color: var(--accent-color); }
.portfolio .portfolio-filters li:first-child { margin-left: 0px; }
.portfolio .portfolio-filters li:last-child { margin-right: 0px; }
@media (max-width: 575px) {
.portfolio .portfolio-filters li { font-size: 14px; margin: 0px 5px; }
}

a.testimonial-link,
a.testimonial-link:hover {
  text-decoration: none;
  color: inherit;
}

.testimonials .testimonial-item {
  display: block;
  position: relative;
  border-radius: 9px; 
  overflow: hidden;
  background: #fdfdfd9e;
  transition: var(--transition-smooth); 
  border: 1px solid var(--border-color); 
  height: 100%;
  min-height: 0; 
  text-align: left; 
  box-sizing: border-box;
}

.testimonials .testimonial-item:hover {
  transform: translateY(-8px) scale(1.02); 
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3); 
  z-index: 10;
}

.testimonials .testimonial-item .testimonial-content {
  padding: 1rem 1.25rem; 
}

.testimonials .testimonial-item .testimonial-content h6 {
  font-family: var(--font-default);
  color: var(--accent-color);
  /* color: #4a4a4a; */
  padding: 0.5rem 0.5rem;
  margin-bottom: 0;
  font-size: 1rem;
  line-height: 1.4;
  font-style: italic; 
  font-weight: 400;
}

.testimonials .swiper-slide {
  padding: 15px 15px;
}


.testimonials .testimonial-item .testimonial-img {
  width: 100%;
  overflow: hidden; 
  position: relative; 
  aspect-ratio: 16 / 9;
}

.testimonials .testimonial-item .testimonial-img img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover; 
  display: block;
  transition: transform 0.3s ease; 
}

.testimonials .testimonial-item:hover .testimonial-img img {
  transform: scale(1.05); 
}

.testimonials .testimonial-item p {
  font-style: normal;
  margin: 0;
  padding: 0;
  background-color: transparent;
  position: static;
  border-radius: 0;
  box-shadow: none;
}

.testimonials .testimonial-item .quote-icon-left,
.testimonials .testimonial-item .quote-icon-right {
  display: none; 
}

#portfolio .portfolio-item {
    margin-bottom: 1px;
}
.portfolio-box {
  display: flex; 
  flex-direction: column;
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  background: var(--surface-color);
  /* background-color: rgba(25, 25, 30, 0.7); */
  transition: var(--transition-smooth);
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
  height: 100%;
}

.portfolio-box:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  z-index: 10;
}

.aspect-ratio-box {
  width: 100%;
  padding-top: 60%; /* 16:9 ratio */
  position: relative;
}

.aspect-ratio-box img,
.aspect-ratio-box video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.portfolio-box:hover .aspect-ratio-box img,
.portfolio-box:hover .aspect-ratio-box video {
  transform: scale(1.05); 
}

.polar_content {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 0.7rem 1.05rem;
  box-sizing: border-box;

  background: rgba(10, 10, 10, 0.5);
  -webkit-backdrop-filter: blur(2px); 
  backdrop-filter: blur(2px);
  /* border-top: 1px solid rgba(255, 255, 255, 0.1);  */
  flex-shrink: 0; 
}

.polar_content h6 {
  font-family: var(--font-default);
  color: var(--surface-color);
  /* margin-bottom: 0.5rem; */
  font-size: 0.9rem;
  line-height: 1.3;
  font-weight: 400;
}
.portfolio-box-caption {
  display: none;
}
.top-left .badge {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.4em 0.8em;
  border-radius: 20px;
  background-color: var(--accent-color) !important;
  color: var(--background-color) !important;
}

.portfolio-filters li {
  color: var(--heading-color);
  padding: 8px 20px;
  border-radius: 30px;
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition-smooth);
}
.portfolio-filters li:hover,
.portfolio-filters li.filter-active {
  color: var(--primary-color);
}
.top-left { position: absolute; top: 6px; left: 6px; }
.button_top { 
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: #149ddd;
    border: none;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: 0.3s ease;
    overflow: hidden;
    position: fixed;      
    bottom: 15px;       
    right: 15px;
    }
.button_top:hover { 
    width: 140px;
    border-radius: 50px;
    transition: 0.3s ease;
    background-color: rgb(181, 160, 255);
    align-items: center;
    }
.button_top:hover .svgIcon { 
  transition: 0.3s ease;
    transform: translateY(-200%);
}
.button_top::before { 
    position: absolute;
    bottom: -20px;
    content: "Back to Top";
    color: white;
    font-size: 0px;
}
.button_top:hover::before { 
    font-size: 11px;
    opacity: 1;
    bottom: unset;
    transition: 0.3s ease;
}
.svgIcon { width: 10px; transition-duration: 0.3s; }
.svgIcon path { fill: white; }
#header { transition: opacity 0.3s ease-in-out, transform 0.3s ease-in-out; transform: translateX(0px); }
.portfolio-item .polaroid { border-radius: 15px; overflow: hidden; transition: transform 0.3s, box-shadow 0.3s; border: 1px solid rgb(226, 232, 240); }
.typed-cursor { opacity: 1; }
.hero {
    min-height: 100vh;
    margin-left: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
    background-color: #0f172a; /* dark-bg */
}
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
        background: url('/assets/image_fx_.jpg') center/cover;
    background-attachment: fixed;
    opacity: 0.15;
    z-index: 1;
}
@media (max-width: 1200px) {
  .hero::before {
      background-attachment: scroll;
  }
}
.hero-content {
    position: relative;
    z-index: 2;
    max-width: 100wh;
    margin: 0 auto;
    padding: 2rem;
}
.hero h1 {
    font-size: clamp(2.5rem, 4vw, 4rem);
    font-weight: 700;
    margin-bottom: 1rem;
    color: #fff;
}

.hero .subtitle {
    font-size: 1.6rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
}

.hero .typed {
    color: #06b6d4; /* accent-color from design_sample */
    font-weight: 600;
}

.hero .lead {
    color: rgba(255, 255, 255, 0.7);
}
.hero .social-links {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    justify-content: center;
}

.hero .social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    color: white;
    transition: all 0.3s ease;
}

.hero .social-links a:hover {
    background: #06b6d4; 
    transform: translateY(-2px);
}

.scroll-down-arrow {
  position: absolute;
  bottom: 1.5rem; 
  left: 50%;
  transform: translateX(-50%); 
  z-index: 10; 
}

.scroll-down-arrow i {
  font-size: 2rem;
  color: rgba(255, 255, 255, 0.6); 
  cursor: pointer;
  transition: color 0.3s ease;
  
  animation: bounce-glow 2.5s infinite ease-in-out;
}

.scroll-down-arrow:hover i {
  color: rgba(255, 255, 255, 1); 
  animation-play-state: paused; 
}

@keyframes bounce-glow {
  0%, 100% {
    transform: translateY(0);
    text-shadow: 0 0 5px rgba(255, 255, 255, 0.3);
  }
  50% {
    transform: translateY(10px); 
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.8);
  }
}

/* Sidebar */
#header {
    transition: opacity 0.3s ease-in-out, left 0.3s ease-in-out;
    left: 0;
}

#header.hidden {
    opacity: 0;
    pointer-events: none;
    left: -300px;
}
/* Project Cards */
.portfolio-item .polaroid {
    border-radius: 15px;
    background-color: #fdfdfdbd;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #e2e8f0; /* border-color */
}
.portfolio-item .polaroid:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}
.portfolio-details .portfolio-details-slider img {
  width: 100%;
}

.portfolio-details .portfolio-details-slider .swiper-pagination {
  margin-top: 20px;
  position: relative;
}

.portfolio-details .portfolio-details-slider .swiper-pagination .swiper-pagination-bullet {
  width: 12px;
  height: 12px;
  background-color: color-mix(in srgb, var(--default-color), transparent 85%);
  opacity: 1;
}

.portfolio-details .portfolio-details-slider .swiper-pagination .swiper-pagination-bullet-active {
  background-color: var(--accent-color);
}

.portfolio-details .portfolio-info {
  padding: 30px;
  box-shadow: 0px 0 30px rgba(0, 0, 0, 0.1);
}

.portfolio-details .portfolio-info h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid color-mix(in srgb, var(--default-color), transparent 85%);
}

.portfolio-details .portfolio-info ul {
  list-style: none;
  padding: 0;
  font-size: 15px;
}

.portfolio-details .portfolio-info ul li+li {
  margin-top: 10px;
}

.portfolio-details .portfolio-description {
  padding-top: 30px;
}

.portfolio-details .portfolio-description h2 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 20px;
}

.portfolio-details .portfolio-description p {
  padding: 0;
  color: color-mix(in srgb, var(--default-color), transparent 30%);
}

.progress-bar {
  height: 0.4rem;
  background: #6EA8FE;
  width: 0%;
  z-index: 9999;
}
.page-title {
  color: var(--default-color);
  background-color: var(--background-color);
  padding: 25px 0;
  position: relative;
}

.page-title h1 {
  font-size: 24px;
  font-weight: 700;
}

.page-title .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 14px;
  font-weight: 400;
}

.page-title .breadcrumbs ol li+li {
  padding-left: 10px;
}

.page-title .breadcrumbs ol li+li::before {
  content: "/";
  display: inline-block;
  padding-right: 10px;
  color: color-mix(in srgb, var(--default-color), transparent 70%);
}

.scroll-top {
  position: fixed;
  visibility: hidden;
  opacity: 0;
  right: 15px;
  bottom: -15px;
  z-index: 99999;
  background-color: var(--accent-color);
  width: 44px;
  height: 44px;
  border-radius: 50px;
  transition: all 0.4s;
}

.scroll-top i {
  font-size: 24px;
  color: var(--contrast-color);
  line-height: 0;
}

.scroll-top:hover {
  background-color: color-mix(in srgb, var(--accent-color), transparent 20%);
  color: var(--contrast-color);
}

.scroll-top.active {
  visibility: visible;
  opacity: 1;
  bottom: 15px;
}

.button_top { /* Changed from .button to .button_top */
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: #149ddd;
  border: none;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  /* box-shadow: 0px 0px 0px 4px rgba(180, 160, 255, 0.253); */
  cursor: pointer;
  transition-duration: 0.3s;
  overflow: hidden;
  position: fixed;      /* fixed position 으로 변경 */
  bottom: 15px;        /* bottom 위치 설정 (원하는 값으로 조정) */
  right: 15px;
}

.svgIcon {
  width: 10px;
  transition-duration: 0.3s;
}

.svgIcon path {
  fill: white;
}

.button_top:hover { /* Changed from .button:hover to .button_top:hover */
  width: 140px;
  border-radius: 50px;
  transition-duration: 0.3s;
  background-color: rgb(181, 160, 255);
  align-items: center;
}

.button_top:hover .svgIcon { /* Changed from .button:hover .svgIcon to .button_top:hover .svgIcon */
  transition-duration: 0.3s;
  transform: translateY(-200%);
}

.button_top::before { /* Changed from .button::before to .button_top::before */
  position: absolute;
  bottom: -20px;
  content: "Back to Top";
  color: white;
  font-size: 0px;
}

.button_top:hover::before { /* Changed from .button:hover::before to .button_top:hover::before */
  font-size: 11px;
  opacity: 1;
  bottom: unset;
  transition-duration: 0.3s;
}


.video-container {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 비율 */
  height: 0;
  overflow: hidden;
  max-width: 100%;
  background: #000;
  margin-bottom: 20px;
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}