body {
   background: #F8F8F8;
}
.contents_hero {
    padding: 60px 30px;
    background: #cacaca;
    text-align: center;
}

p{    font-family: 'Noto Sans KR', sans-serif; line-height: 1.8;
}

.contents_hero h1 {
    font-size: 42px;
    margin-bottom: 13px;
    margin-top:13px;
    font-weight: normal;
}

.contents_hero h1 img {
    width: 30px;
    filter: brightness(1) saturate(0) opacity(1);
    margin-right: 4px;
}
.contents_hero  .subcopy {
    font-size: 16px;
    line-height: 1.5;
    width:100%;
    max-width: 720px;
    padding-left:15px;
    padding-right:15px;
    margin:0 auto;
}
.contents_hero  .hero_img {
    width: 50%;
    padding: 5%;
}



.bg_starfort {
    background: url(/images/pic_starfort_white.png) no-repeat center;
    background-size: contain;
    background-position: center;
    width:100% ; max-width: 350px;
    height: 350px;
    margin: 30px auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}



.bg_therion {
    background: url(/images/pic_stinger_white.png) no-repeat center;
    background-size: contain;
    background-position: center;
    width:100% ; max-width: 320px;
    height: 320px;
    margin: 30px auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}



.bg_research {
    background: url(/images/pic_research_white.png) no-repeat center;
    background-size: contain;
    background-position: center;
    width:100% ; max-width: 600px;
    height: 320px;
    margin: 30px auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}


@keyframes gradientDrift {
    0%   { background-position: 50% 0%; }
    50%  { background-position: 50% 100%; }
    100% { background-position: 50% 0%; }
}

#stinger_hero, .bg_gra_red,
#research_hero, .bg_gra_blue,
#starfort_hero, .bg_gra_green,
.bg_gra_gray {
    background-size: 100% 200%;
    animation: gradientDrift 10s cubic-bezier(0.37, 0, 0.63, 1) infinite;
}

#stinger_hero, .bg_gra_red {
    background-image: linear-gradient(to bottom, #F4927F, #F7E1DD, #F4927F);
}

#research_hero, .bg_gra_blue {
    background-image: linear-gradient(to bottom, #83B5C9, #D8EBF3, #83B5C9);
}

#starfort_hero, .bg_gra_green {
    background-image: linear-gradient(to bottom, #7BB2A9, #CAE3DF, #7BB2A9);
}


@keyframes colorShift {
    0%   { background-position: 50% 0%; }
    50%  { background-position: 50% 100%; }
    100% { background-position: 50% 0%; }
}

#common_hero {
    background-image: linear-gradient(to bottom, #7BB2A9, #CAE3DF, #F4927F, #F7E1DD, #83B5C9, #D8EBF3, #7BB2A9);
    background-size: 100% 600%;
    animation: colorShift 30s cubic-bezier(0.25, 0, 0.75, 1) infinite;
}
.bg_common {
    background: url(/images/pic_common_white.png) no-repeat center;
    background-size: contain;
    background-position: center;
    width:100% ; max-width: 600px;
    height: 200px;
    margin: 30px auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.sub_tag {
    display: inline-block;
    padding: 3px 12px;
    background: rgba(103, 103, 103, 0.7);
    color: #fff;
    font-size: 13px;
}


.breadcrumb a:not(:last-child)::after {
    content: '›';
    margin-left: 6px;
    opacity: 0.5;
}
section {
    padding: 80px 0;
}
.contents_title {
    font-size: 28px;
    font-weight: normal;
    display: flex;
    align-items: center;
    gap:10px;
}

.contents_title img {
    width: 28px;
    filter: brightness(0) saturate(0) opacity(0.82);
}

/* Advanced Capabilities (delta) */
.content_delta {
    display: flex;
    margin-top: 40px;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    overflow: hidden;
}
.delta_list {
    flex: 1;
    display: flex;
    flex-direction: column;
    border-right: 1px solid #e0e0e0;
}
.delta_item {
    padding: 32px 36px;
    border-bottom: 1px solid #e0e0e0;
}
.delta_item:last-child {
    border-bottom: none;
}
.delta_item h3 {
    font-size: 16px;
    font-weight: bold;
    margin: 0 0 12px;
    color: #2f2f2f;
}
.delta_item p {
    font-size: 14px;
    line-height: 1.75;
    color: #555;
    margin: 0;
}
.delta_image {
    flex: 0 0 48%;
    background: #d8d8d8;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.delta_image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Stats bar */
.content_stats {
    display: flex;
    margin-top: 48px;
    border: 1px solid #e0e0e0;
    background: #ffffff;
}
.stats_item {
    flex: 1;
    padding: 36px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    border-right: 1px solid #e0e0e0;
}
.stats_item:last-child {
    border-right: none;
}
.stats_badge {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: #4a4a4a;
    color: #fff;
    font-size: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    letter-spacing: -0.5px;
}
.stats_item p {
    font-size: 14px;
    color: #555;
    margin: 0;
}

/* Paper list */
.paper_list {
    margin: 60px 0;
}
.paper_item {
    display: flex;
    align-items: baseline;
    gap: 0;
    border-bottom: 1px solid #e0e0e0;
    padding: 32px 0;
}
.paper_item:first-child {
    border-top: 1px solid #e0e0e0;
}
.paper_year {
    flex: 0 0 160px;
    font-size: 14px;
    color: #888;
    padding-right: 24px;
    border-right: 1px solid #e0e0e0;
}
.paper_body {
    flex: 1;
    padding: 0 40px;
}
.paper_body h3 {
    font-size: 17px;
    font-weight: normal;
    margin: 0 0 8px;
    line-height: 1.5;
}
.paper_body h3 a {
    color: #2f2f2f;
    text-decoration: none;
}
.paper_body h3 a:hover {
    text-decoration: underline;
}
.paper_body p {
    font-size: 13px;
    color: #888;
    margin: 0;
}
.paper_venue {
    flex: 0 0 80px;
    text-align: center;
    font-size: 12px;
    letter-spacing: 0.05em;
    color: #555;
    background: #f0f0f0;
    padding: 4px 10px;
    border-radius: 3px;
    align-self: center;
}

/* Contact */
.contact_section {
    display: flex;
    gap: 80px;
    padding-top: 80px;
    padding-bottom: 100px;
    align-items: flex-start;
}
.contact_info {
    flex: 0 0 220px;
    display: flex;
    flex-direction: column;
    gap: 32px;
    padding-top: 8px;
}
.contact_info_item {}
.contact_info_label {
    font-size: 11px;
    letter-spacing: 0.08em;
    color: #888;
    text-transform: uppercase;
    margin-bottom: 8px;
}
.contact_info_value {
    font-size: 14px;
    color: #2f2f2f;
    text-decoration: none;
    line-height: 1.5;
    display: block;
}
a.contact_info_value:hover { text-decoration: underline; }
.contact_form {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 24px;
    padding-right: 20px;
}
.contact_form_row {
    display: flex;
    gap: 20px;
}
.contact_form_row .contact_field { flex: 1; }
.contact_field {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.contact_field label {
    font-size: 13px;
    color: #444;
    font-weight: 500;
}
.contact_field input,
.contact_field select,
.contact_field textarea {
    border: 1px solid #d0d0d0;
    background: #fafafa;
    padding: 12px 14px;
    font-size: 14px;
    color: #2f2f2f;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s;
    appearance: none;
    -webkit-appearance: none;
    border-radius: 0;
}
.contact_field input:focus,
.contact_field select:focus,
.contact_field textarea:focus {
    border-color: #78C7BA;
    background: #fff;
}
.contact_field input::placeholder,
.contact_field textarea::placeholder { color: #bbb; }
.contact_field select { cursor: pointer; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23888' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 36px; }
.contact_field textarea { resize: vertical; min-height: 120px; }
.contact_submit {
    align-self: flex-start;
    background: #2f2f2f;
    color: #fff;
    border: none;
    padding: 14px 32px;
    font-size: 14px;
    cursor: pointer;
    font-family: inherit;
    letter-spacing: 0.03em;
    transition: opacity 0.2s;
}
.contact_submit:hover { opacity: 0.75; }

/* Blog list */
.blog_header {
    padding-top: 80px;
    padding-bottom: 40px;
}
.blog_tag {
    background: rgba(131, 181, 201, 0.25);
    color: #5a9ab5;
    margin-bottom: 20px;
}
.blog_title {
    font-size: 48px;
    font-weight: normal;
    margin: 0 0 20px;
    color: #2f2f2f;
}
.blog_desc {
    font-size: 15px;
    line-height: 1.7;
    color: #555;
    max-width: 560px;
    margin: 0;
}
.blog_divider {
    border-top: 1px solid #e0e0e0;
    margin: 0;
}
.blog_grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    padding: 60px 0 80px;
}
.blog_card {
    flex: 1;
    border: 1px solid #e0e0e0;
    background: #fff;
    display: flex;
    flex-direction: column;
}
.blog_card_img {
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #d8d8d8 center / cover no-repeat;
}
.blog_card_body {
    padding: 24px 28px 28px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex: 1;
}
.blog_card_meta {
    font-size: 11px;
    letter-spacing: 0.08em;
    color: #888;
    font-family: monospace;
}
.blog_card_meta span { margin: 0 4px; }
.blog_card h3 {
    font-size: 17px;
    font-weight: bold;
    margin: 0;
    line-height: 1.45;
    color: #2f2f2f;
}
.blog_card h3 a { color: inherit; text-decoration: none; }
.blog_card h3 a:hover { text-decoration: underline; }
.blog_card p {
    font-size: 13px;
    line-height: 1.75;
    color: #666;
    margin: 0;
    flex: 1;
}
.blog_read {
    font-size: 13px;
    color: #2f2f2f;
    text-decoration: none;
    border-bottom: 1px solid #2f2f2f;
    width: fit-content;
    padding-bottom: 1px;
}
.blog_read:hover { opacity: 0.6; }

/* Blog post */
.post_wrap {
    padding-top: 80px;
    padding-bottom: 80px;
    max-width: 1000px;
}
.post_meta {
    font-size: 11px;
    letter-spacing: 0.08em;
    color: #888;
    font-family: monospace;
    margin-bottom: 20px;
}
.post_meta span { margin: 0 4px; }
.post_title {
    font-size: 38px;
    font-weight: normal;
    line-height: 1.3;
    color: #2f2f2f;
    margin: 0 0 20px;
}
.post_lead {
    font-size: 17px;
    line-height: 1.7;
    color: #555;
    margin: 0 0 16px;
    border-left: 3px solid #e0e0e0;
    padding-left: 20px;
}
.post_byline {
    font-size: 13px;
    color: #888;
    margin-bottom: 40px;
}
.post_thumb {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 0 auto 52px;
}
.post_body h2 {
    font-size: 22px;
    font-weight: bold;
    margin: 48px 0 16px;
    color: #2f2f2f;
}
.post_body p {
    font-size: 15px;
    line-height: 1.85;
    color: #444;
    margin: 0 0 20px;
}
.post_body ul {
    padding-left: 24px;
    margin: 0 0 20px;
}
.post_body ul li {
    font-size: 15px;
    line-height: 1.85;
    color: #444;
    margin-bottom: 8px;
    font-family: 'Noto Sans KR', sans-serif;
}
.post_footer {
    margin-top: 60px;
    padding-top: 32px;
    border-top: 1px solid #e0e0e0;
}
.post_back {
    font-size: 14px;
    color: #2f2f2f;
    text-decoration: none;
    border-bottom: 1px solid #2f2f2f;
    padding-bottom: 1px;
}
.post_back:hover { opacity: 0.6; }

/* Event list */
.event_list {
    margin: 60px 0;
}
.event_item {
    display: flex;
    align-items: flex-start;
    gap: 40px;
    border-bottom: 1px solid #e0e0e0;
    padding: 36px 0;
}
.event_item:first-child {
    border-top: 1px solid #e0e0e0;
}
.event_badges {
    flex: 0 0 120px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-top: 3px;
}
.event_type {
    display: inline-block;
    font-size: 11px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 3px 8px;
    border-radius: 2px;
    font-family: monospace;
    width: fit-content;
}
.event_type.upcoming { background: #2f2f2f; color: #fff; }
.event_type.resource  { background: #83B5C9; color: #fff; }
.event_type.past      { background: #e0e0e0; color: #666; }
.event_date {
    font-size: 12px;
    color: #888;
    font-family: monospace;
}
.event_body {
    flex: 1;
}
.event_body h3 {
    font-size: 18px;
    font-weight: normal;
    margin: 0 0 10px;
    color: #2f2f2f;
    line-height: 1.4;
}
.event_body p {
    font-size: 14px;
    line-height: 1.75;
    color: #555;
    margin: 0;
}
.event_link {
    flex: 0 0 auto;
    font-size: 13px;
    color: #2f2f2f;
    text-decoration: none;
    white-space: nowrap;
    padding-top: 4px;
    border-bottom: 1px solid #2f2f2f;
    height: fit-content;
}
.event_link:hover { opacity: 0.6; }

/* Job list */
.job_list {
    margin: 60px 0;
}
.job_item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid #e0e0e0;
    padding: 36px 0;
}
.job_item:first-child {
    border-top: 1px solid #e0e0e0;
}
.job_info h3 {
    font-size: 20px;
    font-weight: normal;
    margin: 0 0 8px;
    color: #2f2f2f;
}
.job_meta {
    font-size: 13px;
    color: #888;
    font-family: monospace;
    letter-spacing: 0.02em;
}
.job_badge {
    display: inline-block;
    padding: 6px 18px;
    font-size: 14px;
    border-radius: 2px;
    text-decoration: none;
    white-space: nowrap;
}
.job_badge.open {
    background: #2f2f2f;
    color: #fff;
}
.job_badge.closed {
    background: transparent;
    color: #aaa;
    border: 1px solid #ccc;
}

/* About cover */
.about_cover {
    background: url('/images/bg_about.jpg') center / cover no-repeat;
    padding: 100px 40px;
    text-align: center;
    margin-top: 20px;
}

/* Podcast Cards */
.content_podcast {
    display: flex;
    gap: 24px;
    margin-top: 32px;
}
.podcast_item {
    flex: 1;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    padding: 32px 36px;
    background: #ffffff;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.podcast_item h3 {
    font-size: 18px;
    font-weight: normal;
    margin: 0;
    color: #2f2f2f;
    line-height: 1.4;
}
.podcast_meta {
    font-size: 12px;
    color: #888;
    font-family: monospace;
    letter-spacing: 0.02em;
}
.podcast_item p {
    font-size: 14px;
    line-height: 1.75;
    color: #555;
    margin: 0;
}

/* Echo: text-only 3-col */
.content_echo {
    display: flex;
    margin-top: 40px;
}
.echo_item {
    flex: 1;
    padding: 36px 40px;
    border-right: 1px solid #e0e0e0;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.echo_item:last-child {
    border-right: none;
    padding-right: 0;
}
.echo_item:first-child {
    padding-left: 0;
}
.echo_item h3 {
    font-size: 15px;
    font-weight: bold;
    margin: 0;
    color: #2f2f2f;
}
.echo_item p {
    font-size: 14px;
    line-height: 1.75;
    color: #555;
    margin: 0;
}

/* Research Workflow */
.research_workflow {
    display: flex;
    align-items: stretch;
    gap: 0;
    margin-bottom: 0;
    margin-top: 32px;
}
.workflow_step {
    flex: 1;
    border: 1px solid #e0e0e0;
    background: #ffffff;
    padding: 28px 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    text-align: center;
}
.workflow_step:not(:last-child) {
    border-right: none;
}
.workflow_num {
    font-size: 11px;
    letter-spacing: 0.1em;
    color: #78C7BA;
    font-family: monospace;
    text-transform: uppercase;
}
.workflow_step h3 {
    font-size: 15px;
    font-weight: bold;
    margin: 0;
    color: #2f2f2f;
}
.workflow_step p {
    font-size: 13px;
    line-height: 1.65;
    color: #666;
    margin: 0;
}
.workflow_arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ccc;
    font-size: 20px;
    padding: 0 4px;
    flex-shrink: 0;
}
.workflow_cycle {
    border: 1px dashed #78C7BA;
    padding: 10px 20px;
    text-align: center;
    font-size: 12px;
    color: #78C7BA;
    font-family: monospace;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-top: 8px;
    margin-bottom: 0;
}

@media (max-width: 768px) {
  .research_workflow {
    flex-direction: column;
  }
  .workflow_step {
    border-right: 1px solid #e0e0e0;
    border-bottom: none;
  }
  .workflow_step:last-child {
    border-bottom: 1px solid #e0e0e0;
  }
  .workflow_arrow {
    transform: rotate(90deg);
    padding: 4px 0;
  }
}

/* Core Features (charlie) */
.content_charlie {
    display: flex;
    gap: 20px;
    margin-top: 40px;
}
.charlie_item {
    flex: 1;
    padding: 35px 40px;
    border: 1px solid #e0e0e0;
    display: flex;
    flex-direction: column;
    gap: 20px;
    background: #ffffff;
}
.charlie_item h3 {
    font-size: 22px;
    font-weight: bold;
    margin: 0;
    color: #2f2f2f;
    text-align: center;
}
.charlie_item img {
    width: 100%;
    object-fit: contain;
    background: #edf2f1;
    border-radius: 6px;
}
.charlie_item p {
    font-size: 15px;
    line-height: 1.75;
    color: #555;
    margin: 0;
}

/* FAQ Accordion */
.content_faq {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 40px;
}
.faq_item {
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 22px 28px;
    cursor: pointer;
    user-select: none;
    background: #ffffff;
}
.faq_item h3 {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 18px;
    font-weight: normal;
    margin: 0;
    color: #2f2f2f;
}
.faq_item h3::before {
    content: '\2733';
    color: #828282;
    font-size: 13px;
    flex-shrink: 0;
}
.faq_item h3::after {
    content: '\203a';
    margin-left: auto;
    font-size: 20px;
    color: #aaa;
    transition: transform 0.25s ease;
    line-height: 1;
}
.faq_item.open h3::after {
    transform: rotate(90deg);
}
.faq_item p {
    display: none;
    margin: 22px 0 0 25px;
    font-size: 15px;
    line-height: 1.75;
    color: #4F4F4F;
    font-family: 'Noto Sans KR', sans-serif;
}
.faq_item.open p {
    display: block;
}

/* =============================================
   콘텐츠 페이지 모바일 미디어 쿼리 (≤ 768px)
   ============================================= */
@media (max-width: 768px) {
  .contents_hero {
    padding: 80px 16px 40px;
  }
  .contents_hero h1 {
    font-size: 28px;
    line-height: 1.4;
  }
  .contents_hero .subcopy {
    font-size: 14px;
    padding-left: 0;
    padding-right: 0;
  }
  .contents_hero .hero_img {
    width: 80%;
    padding: 5% 0;
  }

  /* 그리드 단일 컬럼 */
  .award_list {
    grid-template-columns: 1fr;
  }

  /* 섹션 공통 패딩 */
  .widewidth {
    padding-left: 16px;
    padding-right: 16px;
  }
  section {
    padding: 50px 0;
  }

  /* Advanced Capabilities (delta) */
  .content_delta {
    flex-direction: column;
  }
  .delta_image {
    flex: none;
    min-height: 220px;
  }

  /* Stats bar */
  .content_stats {
    flex-wrap: wrap;
  }
  .stats_item {
    flex: 0 0 50%;
    border-bottom: 1px solid #e0e0e0;
  }
  .stats_item:last-child {
    border-right: none;
  }

  /* Paper list */
  .paper_item {
    flex-direction: column;
    gap: 8px;
  }
  .paper_year {
    flex: none;
    border-right: none;
    border-bottom: 1px solid #e0e0e0;
    padding-bottom: 8px;
    padding-right: 0;
  }
  .paper_body {
    padding: 0;
  }
  .paper_venue {
    flex: none;
    align-self: flex-start;
  }

  /* Contact section */
  .contact_section {
    flex-direction: column;
    gap: 32px;
    padding-top: 40px;
    padding-bottom: 60px;
  }
  .contact_info {
    flex: none;
  }
  .contact_form_row {
    flex-direction: column;
    gap: 16px;
  }

  /* Blog grid */
  .blog_grid {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 32px 0 48px;
  }
  .blog_title {
    font-size: 30px;
  }

  /* Blog post */
  .post_wrap {
    padding-top: 48px;
    padding-bottom: 48px;
  }
  .post_title {
    font-size: 26px;
  }
  .post_lead {
    font-size: 15px;
  }

  /* Event list */
  .event_item {
    flex-direction: column;
    gap: 12px;
  }
  .event_badges {
    flex: none;
  }

  /* Job list */
  .job_item {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  /* Podcast */
  .content_podcast {
    flex-direction: column;
  }

  /* Echo 3-col */
  .content_echo {
    flex-direction: column;
  }
  .echo_item {
    border-right: none;
    border-bottom: 1px solid #e0e0e0;
    padding: 24px 0;
  }
  .echo_item:last-child {
    border-bottom: none;
  }
  .echo_item:first-child {
    padding-top: 0;
  }

  /* Charlie 3-col */
  .content_charlie {
    flex-direction: column;
  }

  /* FAQ */
  .faq_item h3 {
    font-size: 15px;
  }

  /* About cover */
  .about_cover {
    padding: 60px 20px;
  }

  /* contents_title */
  .contents_title {
    font-size: 22px;
  }
}