:root {
    --white : #FFF;
    --color-primary: #2957F2;
    --color-secondary: #606A77;
    --font-size-base: 14px;
    --font-size-large: 1.25rem;
    --font-size-small: 0.875rem;
    --spacing-12: 12px;
    --spacing-16: 16px;
    --spacing-20: 20px;
    --spacing-24: 24px;
    --spacing-32: 32px;
    --spacing-40: 40px;
    --border-radius: 0.5rem;
}

/* utillity class */
.flex { display: flex; }
.flex-set { display: flex; justify-content: space-between; align-items: center; }
.flex-1 { flex: 1 1 0%; }
.flex-wrap { flex-wrap: wrap; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: end; }
.items-center { align-items: center; }
.shrink-0 { flex-shrink: 0; }
.grow-1 { flex-grow: 1; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }

/* margin, padding */
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; /* 30px */ }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-8 { margin-bottom: 2rem; /* 30px */ }

body.is-locked,
html.is-locked {
  overflow: hidden;
  height: 100%;
}

/* 메인 섹션별 헤드라인 공통 */
.headline-bar {
    padding-inline: var(--spacing-16);
    margin-bottom: var(--spacing-12);
}
.headline-bar.mb-space-16 {
    margin-bottom: var(--spacing-20);
}
.headline-bar--flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.headline-bar h1,
.headline-bar h2 {
    display: inline-flex;
    font-size: 1.65rem;
    font-weight: 700;
    font-family: 'Poppins', 'Inter', 'Pretendard', sans-serif;
    letter-spacing: -0.02em;
    text-transform: uppercase;
}
.headline-bar .headline-bar__link {
    width: 25px;
    height: 25px;
    border-radius: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.headline-bar .headline-bar__link .icon--arrow-right {
    width: 8px;
    height: 14px;
    background: url('/images/ico-arrow-link-215c5534ef5ea750cc8e6d1a1d1580a7.svg') no-repeat center;
    background-size: 8px auto;
}
.headline-bar .headline-bar__meta {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-top: 4px;
    color: #67707d;
}
.headline-bar .headline-bar__meta .headline-bar__subtitle {
    font-size: 0.95rem;
}
.headline-bar .headline-bar__meta .headline-bar__refresh {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    text-decoration: underline;
}
.headline-bar .headline-bar__meta .headline-bar__refresh .icon {
    width: 10px;
    height: 10px;
    background: url('/images/ico-refresh-c1da5638e1b8453cb4627400974dd3c8.png') no-repeat center;
    background-size: 10px auto;
}

/* 썸네일 비율 설정 */
.aspect-box {
    width: 100%;
    position: relative;
    overflow: hidden;
}
.aspect-3x2 {
    aspect-ratio: 3 / 2;
}
.aspect-4x3 {
    aspect-ratio: 4 / 3;
}
.aspect-4x5 {
    aspect-ratio: 4 / 5;
}
.aspect-box img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    object-position: top;
}
.aspect-box .video-thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
    border-radius: inherit;
    display: block;
}

/* 뉴스 카드 공통 설정 */
.ks-stackCard .ks-stackCard__content {
    margin-top: 17px;
}
.ks-stackCard .ks-stackCard__content .ks-stackCard__title {
    font-size: 1.16rem;
    font-weight: 600;
    line-height: 1.31;
    letter-spacing: -0.07px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}
.ks-stackCard .ks-stackCard__content .ks-stackCard__title.title-md {
    font-size: 1.21rem;
}
.ks-stackCard .ks-stackCard__content .ks-stackCard__meta {
    margin-top: 10px;
    color: var(--color-secondary);
    font-size: 0.84rem;
    font-weight: 500;
    letter-spacing: -0.02px;
}
.ks-stackCard__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
}
.ks-stackCard__tags .tag {
    display: block;
    max-width: 16ch;
    height: 36px;
    line-height: 36px;
    padding-inline: var(--spacing-12);
    border-radius: 37px;
    font-size: 0.77rem;
    font-weight: 500;
    color: #4A4E73;
    background: #F0F4FF;
    letter-spacing: -0.005rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.trending-articles .trending-list .trending-list__item:nth-child(2) .ks-stackCard__tags .tag {
    color: #4E6867;
    background: #e9faf2;
}
.ks-stackCard .ks-stackCard__media {
    position: relative;
}
.ks-stackCard .ks-stackCard__media .ks-stackCard__badge {
    position: absolute;
    bottom: 7px;
    left: 7px;
    height: 21px;
    line-height: 21px;
    border-radius: 1px;
    font-size: 10px;
    font-weight: 500;
    padding-inline: 6px;
    font-family: 'Poppins', 'Inter', 'Pretendard', sans-serif;
    letter-spacing: 0.01rem;
}
.skeleton {
    position: relative;
    overflow: hidden;
    background: #B2FFAA;
}
.skeleton::before {
    content: "";
    position: absolute;
    top: 0;
    left: -75%;
    width: 32%;
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    transform: skewX(-20deg);
    animation: swipeShine 2.2s ease-in-out infinite;
}
.latest-articles__item:nth-child(even) .skeleton {
    background: #FFF89A;
}

@keyframes swipeShine {
    0% { left: -75%; opacity: 0; }
    50% { opacity: 0.6; }
    100% { left: 125%; opacity: 0; }
}

/* 공백 레이아웃 설정 */
.ks-space {
    padding-inline: var(--spacing-16);
}
.ks-space--left {
    padding-inline-start: var(--spacing-16);
}

/* 메인 페이지 중간 프레임 BG 설정 */
.ks-content-layered {
    position: relative;
    margin-top: 48px;
}
.ks-content-bg {
    position: relative;
    background: var(--white);
    border-top-left-radius: 20px;
    border-top-right-radius: 20px;
    z-index: 1;
}
.ks-gradient-underlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 140px;
    background: linear-gradient(to top, #eaf3ff 0%, transparent 100%);
    z-index: 0;
    pointer-events: none;
}

/* 문장 한줄 표현 */
.ellipsis {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%; /* 부모 요소 크기에 맞춰 적용 */
}
/* 문장 라인 정의 */
.two-lines {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}
.three-lines {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 검색영역 공통 설정 */
.search-input__box.is-search .search-input__inner {
  display: flex;
  align-items: center;
  gap: 5px;
  height: 48px;
  padding: 0 8px 0 10px;
  background: #EEF0F5;
  border-radius: 8px;
}
.search-input__box.is-search .search-input__inner .btn-search {
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  background: url('/images/ico-btn-search-c6cd9aae34d599fb1170ec101cdcd6cf.png') no-repeat center;
  background-size: 19px auto;
  border-radius: 4px;
}
.search-input__box.is-search .search-input__inner input {
  flex: 1 1 auto;
  font-size: 16px;
}
.search-input__box.is-search .search-input__inner input[type="search"]::-webkit-search-cancel-button {
  display: none;
}
.search-input__box.is-search .search-input__inner .clear-btn {
  display: none;
  flex: 0 0 auto;
  width: 15px;
  height: 15px;
  background: url('/images/ico-btn-clear-06b1ba211b11a7337a23ccbdd37b55f5.svg') no-repeat center;
}

/* 키워드 벳지 공통 */
.ks-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 65px;
    height: 28px;
    padding-inline: 12px;
    font-size: 11px;
    color: #4E5968;
    border-radius: 38px;
}
.ks-chip.ks-chip--outlined {
    border: 1px solid #E5E8EB;
}
.ks-chip.ks-chip--md {
    min-width: 75px;
    height: 38px;
    font-size: 13px;
    color: #191F28;
}
.ks-chip.ks-chip--sky {
    background: #F0F4FF;
}

/* 버튼 공통 */
.ks-button {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-inline: var(--spacing-12);
}
.ks-button.ks-button--sm {
    min-width: 102px;
    height: 36px;
    font-size: 13px;
    border-radius: 6px;
}
.ks-button.ks-button--md {
    height: 50px;
    font-size: 15px;
    font-weight: 500;
    border-radius: 8px;
}
.ks-button.ks-button--sm.full,
.ks-button.ks-button--md.full {
    width: 100%;
}
.ks-button.ks-button--inverted {
    background: #191F28;
    color: var(--white);
}
.ks-button.ks-button--outlined {
    border: 1px solid #E5E8EB;
}

/* 탭 영역 공통 */
.search-tabs .search-tabs__list {
    display: flex;
    align-items: center;
    text-align: center;
}
.search-tabs .search-tabs__list .search-tabs__item {
    height: 38px;
}
.search-tabs .search-tabs__list.two-lines .search-tabs__item {
    flex: 1 0 auto;
}
.search-tabs .search-tabs__list .search-tabs__item button {
    width: 100%;
    height: 100%;
    position: relative;
    color: #B5BAC0;
    font-weight: 500;
    border-bottom: 1px solid #E5E8EB;
}
.search-tabs .search-tabs__list .search-tabs__item.is-active button {
    color: #191F28;
}
.search-tabs .search-tabs__list .search-tabs__item.is-active button::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -1px;
    width: 100%;
    height: 2px;
    background-color: #191F28;
}

/* 뉴스 리스트 공통 */
.ks-articleCard .ks-articleCard__link {
    display: flex;
    justify-content: space-between;
    gap: 12px;
}
.ks-articleCard .ks-articleCard__link .ks-articleCard__content {
    font-size: 12px;
}
.ks-articleCard .ks-articleCard__link .ks-articleCard__content .ks-card__category {
    font-weight: 500;
}
.ks-articleCard .ks-articleCard__link .ks-articleCard__content .ks-card__title {
    margin-block: 6px 10px;
    font-size: 1.1rem;
    font-weight: 600;
    line-height: 1.35;
    letter-spacing: -0.005rem;
}
.ks-articleCard .ks-articleCard__link .ks-articleCard__content .ks-articleCard__meta {
    display: flex;
    flex-wrap: wrap;
    color: var(--color-secondary);
    letter-spacing: -0.01rem;
}
.ks-articleCard .ks-articleCard__link .ks-articleCard__content .ks-articleCard__meta .ks-card__author,
.ks-articleCard .ks-articleCard__link .ks-articleCard__content .ks-articleCard__meta .ks-card__date,
.ks-articleCard .ks-articleCard__link .ks-articleCard__content .ks-articleCard__meta .ks-card__readtime {
    margin: 0 12px 4px 0;
}
.ks-articleCard .ks-articleCard__link .ks-articleCard__thumb {
    flex: 0 0 30%;
}

/* 닫기 x버튼 공통 */
.ks-closeBtn {
    position: relative;
    display: block;
    width: 19px;
    height: 2px;
    border-radius: 2px;
}
.ks-closeBtn::before,
.ks-closeBtn::after {
    content: '';
    position: absolute;
    width: 19px;
    height: 2px;
    background-color: #1D1D1F;
    left: 0;
    border-radius: 2px;
    transition: transform 0.3s ease, top 0.3s ease;
}
.ks-closeBtn::before {
    transform: rotate(45deg);
    top: 0;
}
.ks-closeBtn::after {
    transform: rotate(-45deg);
    top: 0;
}

/* 플립 텍스트 래퍼 */
.ks-flipText {
    position: relative;
    display: inline-block;
    overflow: hidden;
    vertical-align: baseline;
    white-space: nowrap;
}
.ks-flipText__item {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    transform: translateY(100%);
    opacity: 0;
    transition: transform .5s ease, opacity .5s ease;
    will-change: transform, opacity;
}
.ks-flipText__item.is-in {
    transform: translateY(0);
    opacity: 1;
}
.ks-flipText__item.is-out {
    transform: translateY(-100%);
    opacity: 0;
}
.ks-flipText__item.is-below {
    transform: translateY(100%);
    opacity: 0;
}

/* LOADING OVERLAY */
.ks-loader {
    position: fixed;
    inset: 0;
    display: none;
    place-items: center;
    z-index: 9999;
    pointer-events: auto;
    cursor: progress;
}
.ks-loader.is-loading {
    display: grid;
}
.ks-loader .ks-loader--section .ks-loader-spinner {
    width: 3rem;
    height: 3rem;
    padding: 2px;
    overflow: visible;
}

.ks-loader .ks-loader--section .ks-loader-spinner > circle {
    stroke: #e1e5f0;
    fill: none;
    stroke-width: 2px;
    stroke-linecap: round;
    transform-origin: 50% 50%;
    transition: all 0.2s ease-in-out 0s;
    animation: 2s linear 0s infinite normal none running loading-spinner;
}

@keyframes loading-spinner {
    0% {
        stroke-dasharray: 0.01px, 43.97px;
        transform: rotate(0);
    }

    50% {
        stroke-dasharray: 21.99px, 21.99px;
        transform: rotate(450deg);
    }

    100% {
        stroke-dasharray: 0.01px, 43.97px;
        transform: rotate(1080deg);
    }
}

/* BACK TO TOP BUTTON */
.ks-btn-top {
    position: fixed;
    right: 12px;
    bottom: 12px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--white);
    box-shadow: 0 2px 8px rgba(220,228,247,.5);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: opacity .3s ease, visibility .3s ease, transform .3s ease;
    transform: translateY(20px);
    z-index: 50;
}
.ks-btn-top.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

@media (max-width: 1080px) {
    .headline-bar h1,
    .headline-bar h2 {
        font-size: 1.27rem;
    }
    .headline-bar.mb-space-16 {
        margin-bottom: var(--spacing-16);
    }
    .headline-bar .headline-bar__meta .headline-bar__subtitle {
        font-size: 0.81rem;
    }
    .ks-stackCard .ks-stackCard__media .ks-stackCard__badge {
        border-radius: 3px;
    }
    .ks-stackCard .ks-stackCard__content .ks-stackCard__title {
        font-size: 1rem;
        font-weight: 600;
    }
    .ks-stackCard .ks-stackCard__content .ks-stackCard__title.title-md {
        font-size: 1.067rem;
    }
    .ks-gradient-underlay {
        background: linear-gradient(to top, #8FBFFF 0%, transparent 100%);
    }
    .ks-stackCard .ks-stackCard__content {
        margin-top: 11px;
    }
    .ks-stackCard .ks-stackCard__content .ks-stackCard__meta {
        margin-top: 7px;
        font-size: 13px;
    }
    .ks-stackCard__tags .tag {
        height: 32px;
        line-height: 32px;
        border-radius: 32px;
        font-size: 0.74rem;
    }
    .ks-content-layered {
        margin-top: 40px;
    }
    .aspect-box {
        border-radius: 0.562rem;
    }
    .aspect-box.rounded-md {
        border-radius: 0.88rem;
    }
}
@media (max-width: 768px) {
    .ks-articleCard .ks-articleCard__link .ks-articleCard__thumb {
        flex: 0 0 33%;
    }
}

/* Modern CSS Reset */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px; /* Root font size 설정 */
    background: #F9FAFB;
    -webkit-text-size-adjust: 100%;
}

body {
    line-height: 1.4;
    font-family: 'Inter', 'Pretendard', 'SUIT', sans-serif; /* 가벼운 가독성을 위한 기본 폰트 */
    background-color: #F9FAFB; /* 기본 배경색 */
    color: #191F28; /* 텍스트 색상 */
    font-size: 14px;
    margin: 0 auto;
    isolation: isolate;
}

img,
picture {
    max-width: 100%;
    display: block;
}

ul,
li {
    list-style: none;
}

a {
    text-decoration: none;
    color: inherit; /* 링크는 텍스트 색상 상속 */
}

a[href^='tel'] {
    color: inherit;
    text-decoration: none;
}

.blind,
caption,
caption span,
legend {
    overflow: hidden;
    position: absolute;
    top: 0;
    left: 0;
    width: 1px;
    height: 1px;
    font-size: 0;
    text-indent: -9999px;
    white-space: nowrap;
}

button {
    overflow: visible;
    border: 0;
    background-color: transparent;
    cursor: pointer
}

button:disabled {
    cursor: default;
}

button::-moz-focus-inner {
    padding: 0;
    margin: -1px;
}

input, textarea, select, button {
    margin: 0;
    padding: 0;
    border: none;
    outline: none;
    background: none;
    font: inherit; /* 부모 요소의 폰트 상속 */
    color: inherit; /* 부모 요소의 색상 상속 */
    box-sizing: border-box;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none; /* 브라우저 기본 스타일 제거 */
}

input:focus, textarea:focus, select:focus {
    outline: none;
}

input:disabled, textarea:disabled, select:disabled {
    background-color: transparent;
    color: #ccc; /* 비활성 상태의 텍스트 색상 */
    cursor: not-allowed;
}

::placeholder {
    color: #aaa; /* 기본 placeholder 색상 */
    opacity: 1; /* 브라우저 기본 투명도 제거 */
}

::-ms-input-placeholder {
    color: #aaa; /* IE 지원 */
}

fieldset {
    border: none;
}