:root {
    --cyan: #00AEEF;
    --magenta: #EC008C;
    --yellow: #FFF100;
    --black: #222222;
    --gray: #f5f5f5;
    --border: #e5e5e5;
    --text: #333333;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    color: var(--text);
    line-height: 1.8;
    background: #fff;
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    width: min(1300px, 90%);
    margin: auto;
}

.pc_none {
    display: none;
}

.sp_none {
    display: block;
}

a:hover {
    opacity: .7
}

.mb10 {
    margin-bottom: 10px;
}

b {
    font-weight: bold;
}

@media (max-width:768px) {
    .pc_none {
        display: block;
    }

    .sp_none {
        display: none;
    }
}

@media (any-hover: hover) {
    .buttonIconText {
        margin: auto;
        transition: background-color 0.2s;
    }

    .buttonIconText_icon_item {
        transition: background-color 0.2s;
    }

    .buttonIconText:hover {
        background-color: #f57575;
    }
}

#contact {
    margin-top: -76px;
    padding-top: 76px;
}

@media (max-width: 768px) {
    #contact {
        margin-top: -65px;
        padding-top: 65px;
    }
}

/* ====================
HEADER
==================== */

.header {
    position: sticky;
    top: 0;
    z-index: 999;
    background: #fff;
    border-bottom: 1px solid var(--border);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 90px;
}

.logo h1 img {
    max-width: 300px;
    height: 60px;
}

.logo span {
    font-size: .75rem;
    color: #888;
}

nav ul {
    display: flex;
    gap: 30px;
}

nav a {
    font-size: .95rem;
    font-weight: 500;
}

nav a:hover {
    color: var(--cyan);
}

.btn-contact {
    background: var(--black);
    color: #fff;
    padding: 14px 26px;
    border-radius: 8px;
    transition: .3s;
}


.btn-contact:hover {
    opacity: .8;
}

@media (max-width: 768px) {
    .logo h1 {
        font-size: 1.2rem;
    }
}

@media (max-width: 500px) {
    .logo h1 img {
        height: 40px;
    }
}

/* ====================
CMYK BAR
==================== */

.cmyk-bar {
    display: flex;
    height: 10px;
}

.cmyk-bar span {
    flex: 1;
}

.cyan {
    background: var(--cyan);
}

.magenta {
    background: var(--magenta);
}

.yellow {
    background: var(--yellow);
}

.black {
    background: #000;
}

h2 {
    font-size: 5.2rem;
    text-align: center;
    font-weight: 600;
    letter-spacing: 0.1em;
    position: relative;
}

h2 sub {
    font-size: 2.0rem;
    line-height: 1.4;
    display: block;
    font-family: "dnp-shuei-mgothic-std", sans-serif;
    font-weight: 400;
}

/* ====================
HERO
==================== */

.hero {
    position: relative;
    overflow: hidden;
    padding: 0;
}

.hero-wrap {
    position: relative;
    width: 100%;
    max-width: none;
    height: calc(100vh - 90px);
    /* ヘッダー分を引く */
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero h2 {
    font-size: 6rem;
    line-height: 1.25;
    margin-bottom: 30px;
    color: #fff;
    text-align: left;
}

.hero-video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, .55);
    z-index: 2;
}

.hero-text {
    position: relative;
    z-index: 3;
    color: #fff;
    text-align: center;
    max-width: 1200px;
    padding: 0 20px;
}

.hero p {
    font-size: 2rem;
    margin-bottom: 40px;
}

.hero-btns {
    display: flex;
    gap: 20px;
}

.btn-primary {
    background: var(--black);
    color: #fff;
    padding: 18px 35px;
    border-radius: 10px;
    font-weight: 700;
}

.btn-secondary {
    border: 2px solid var(--black);
    padding: 18px 35px;
    border-radius: 10px;
    font-weight: 700;
}

.btn-primary:hover,
.btn-secondary:hover {
    transform: translateY(-2px);
}

.hero-image {
    width: 100%;
    max-width: 600px;
}

/* ====================
SECTION TITLE
==================== */

.section-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 60px;
    color: var(--black);
}

@media (max-width: 768px) {
    .section-title {
        margin-bottom: 20px;
    }
}

/* ====================
ABOUT
==================== */

.about {
    padding: 100px 0;
    background: #fafafa;
}

.about h3 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 70px;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

.about-item {
    padding: 30px 10px;
    border-radius: 16px;
    text-align: center;
}

.about-item p.text-left {
    text-align: left;
}

.icon {
    width: 100px;
    height: 100px;
    margin: auto;
    margin-bottom: 25px;
    background-color: #3385F5;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2rem;
}

.icon img {
    width: 60px;
}

.icon1 {
    background: var(--magenta);
}

.icon2 {
    background: var(--cyan);
}

.icon3 {
    background: var(--yellow);
}

.about-item h4 {
    font-size: 1.8rem;
    margin-bottom: 15px;
}

@media (max-width:768px) {
    .icon {
        height: 70px;
    }

    .about {
        margin-bottom: 70px;
        padding: 20px 0;
    }

    .about h3 {
        text-align: left;
        font-size: 5vw;
        margin-bottom: 35px;
    }

    .about-item {
        display: flex;
        align-items: center;
        gap: 25px;
        text-align: left;
        padding-bottom: 0;
    }

    .about-item .icon {
        flex: 0 0 70px;
        margin: 0;
    }

    .about-item .icon img {
        width: 70%;
        display: block;
    }

    .about-body {
        flex: 1;
    }

    .about-body h4 {
        font-size: 5vw;
        margin: 0;
    }

    .about-body p {
        font-size: 3.5vw;
        margin: 0;
    }

    .about-item {
        padding: 0 10px;
    }

}

/* ====================
SERVICES
==================== */

.services {
    padding: 120px 0;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.card {
    background-color: #fff;
    border: 2px solid var(--border);
    border-radius: 18px;
    overflow: hidden;
    transition: .3s;
}

@media (max-width:768px) {
    .services {
        padding: 80px 0;
    }
}

.card-image {

    background:
        linear-gradient(135deg,
            rgba(0, 174, 239, .15),
            rgba(236, 0, 140, .15),
            rgba(255, 241, 0, .15));
}

.card h3 {
    padding: 25px 25px 10px;
}

.card ul {
    padding: 0 25px 25px;
}

.card li {
    margin-bottom: 8px;
}

@media (max-width:768px) {
    .card h3 {
        padding: 15px 15px 10px;
    }

    .card ul {
        padding: 0 15px 15px;
    }
}

/* ====================
WORKS
==================== */
#works {
    margin-top: 100px;
}

.works {
    padding: 120px 0;
    background: #fafafa;
}

.works-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.work {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.work-image {
    aspect-ratio: 16/10;
    background: #ddd;
}

.work h3 {
    padding: 20px 20px 5px;
}

.work p {
    padding: 0 20px 20px;
}

/* ====================
STRENGTH
==================== */

.strength {
    padding: 80px 0;
}

.strength-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.strength strong {
    display: block;
    font-size: 2rem;
    margin-bottom: 10px;
    color: var(--black);
}

/* ====================
FLOW
==================== */

.flow {
    padding: 120px 0;
    background: #fafafa;
}

.flow img {
    width: 100%;
    max-width: 75px;
    margin: auto;
}

.flow-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 25px;
}

.flow-grid div {
    background: #fff;
    border-radius: 16px;
    border: 1px solid var(--border);
    padding: 40px 20px;
    text-align: center;
    font-weight: 700;
    color: #C4321F;
}

.flow-grid div {
    position: relative;
}

.flow-grid p {
    font-size: 12px;
    color: #333;
}

.flow-grid div:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 50%;
    right: -20px;
    width: 20px;
    height: 20px;
    border-top: 4px solid #333333;
    border-right: 4px solid #333333;
    transform: translateY(-50%) rotate(45deg);
}

@media (max-width: 768px) {

    .flow {
        padding: 60px 0;
    }

    .flow-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .flow-grid div {
        padding: 30px 20px;
    }

    .flow-grid div:not(:last-child)::after {
        top: auto;
        bottom: -30px;
        right: 50%;
        width: 20px;
        height: 20px;
        transform: translateX(50%) rotate(135deg);
    }

}

/* ====================
profile
==================== */
.profile h2 {
    font-size: 3em;
    margin-bottom: 2%;
}

.profile h2 sub {
    font-size: 30px;
}

.profile ul {
    margin-bottom: 20px;
}

.profile li {
    font-size: 18px;
}

@media (max-width: 500px) {
    .profile li {
        font-size: 4vw;
    }
}

/* ====================
CONTACT
==================== */
.profile {
    text-align: center;
}

#contact h2 {
    margin-top: 100px;
}

#contact h2 sub {
    font-size: 20px;
    line-height: 1.4;
    display: block;
    font-family: "dnp-shuei-mgothic-std", sans-serif;
    font-weight: 400;
}

#contact ul li {
    font-size: 1rem;
}

.buttonIconText {
    display: flex;
    gap: 8px;
    align-items: center;
    width: 100%;
    max-width: 320px;
    height: 64px;
    font-family: sans-serif;
    font-size: 18px;
    color: #fff;
    text-align: center;
    overflow-wrap: anywhere;
    background-color: #df5656;
    border-radius: 32px;
    margin: auto;
}

.buttonIconText_icon {
    display: flex;
    flex-shrink: 0;
    align-items: center;
    justify-content: center;
    width: 60px;
}

.buttonIconText_text {
    flex-shrink: 1;
    width: 65%;
}

.annotation {
    margin-top: 1rem;
    font-size: 16px;
}

.copyButton {
    cursor: pointer;
}

.copy_button {
    margin: 10px auto 0;
    text-align: center;
    font-size: 1.5rem;
}

.copyButton {
    cursor: pointer;
}

@media screen and (max-width: 640px) {
    #contact h2 {
        margin-top: 45px;
    }

    #message h3 {
        font-size: 4.5em;
    }

    #message .section {
        display: block;
        max-width: 100%;
        padding: 2em;
    }

    #message .label img {
        margin: 0 0 2% 5%;
    }

    #contact ul li.annotation {
        font-size: 14px;
    }
}

/* ====================
FOOTER
==================== */

.footer {
    border-top: 1px solid var(--border);
    text-align: center;
    padding: 30px;
    font-size: .85rem;
    background-color: #fff;
}

/* ====================
RESPONSIVE
==================== */

@media (max-width:1024px) {

    .hero-wrap {
        grid-template-columns: 1fr;
    }

    .hero h2 {
        font-size: 3rem;
    }

    .about-grid {
        grid-template-columns: 1fr;
    }

    .service-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .works-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .strength-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .flow-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-box {
        flex-direction: column;
        gap: 30px;
        text-align: center;
    }

}

@media (max-width:768px) {

    .hero {
        padding: 0 0 30px;
    }

    .hero h2 {
        font-size: 13vw;
        margin-bottom: 10px;
        text-align: center;
    }

    .hero p {
        font-size: 5vw;
        margin-bottom: 0;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .works-grid,
    .strength-grid,
    .flow-grid {
        grid-template-columns: 1fr;
    }

    .hero-btns {
        flex-direction: column;
    }

    .contact-box {
        padding: 40px 25px;
    }

}

@media (max-width:500px) {
    .service-grid {
        grid-template-columns: 1fr;
    }

}


/* ====================
HAMBURGER MENU
==================== */

.hamburger {
    display: none;
    width: 40px;
    height: 30px;
    border: none;
    background: transparent;
    cursor: pointer;
    padding: 0;
    position: relative;
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 100%;
    height: 3px;
    background: #222;
    border-radius: 2px;
    transition: .3s;
}

.hamburger {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

@media (min-width:769px) {
    .hamburger {
        display: none;
    }
}

@media (max-width:768px) {

    .header {
        position: sticky;
    }

    .header .container {
        height: 80px;
    }

    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        background: #fff;
        border-top: 1px solid #e5e5e5;
        display: none;
        z-index: 1000;
    }

    .nav-menu.active {
        display: block;
    }

    .nav-menu ul {
        display: flex;
        flex-direction: column;
        gap: 0;
    }

    .nav-menu li {
        border-bottom: 1px solid #e5e5e5;
    }

    .nav-menu a {
        display: block;
        padding: 18px 20px;
        font-size: 1rem;
    }

    .hamburger.active span:nth-child(1) {
        transform: translateY(13px) rotate(45deg);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: translateY(-13px) rotate(-45deg);
    }
}

#works-section {
    padding: 100px 0;
}

.works-section {
    width: min(var(--max), calc(100% - 48px));
    margin-inline: auto;
}


.section-heading h2 {
    font-size: 1.4rem;
    line-height: 1.65;
}

.section-heading h2 {
    margin: 0;
    color: var(--black);
    font-size: clamp(1.55rem, 2.8vw, 2.2rem);
    font-weight: 900;
    line-height: 1.75;
    overflow-wrap: anywhere;
}

.section-heading {
    margin-bottom: 40px;
    text-align: center;
}

#contact.section-heading {
    margin-bottom: 0;
}

.filter-button {
    min-width: 88px;
    min-height: 40px;
    padding: 0 20px;
    color: var(--black);
    background: #fff;
    border: 1px solid transparent;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 900;
    cursor: pointer;
    transition:
        transform 160ms ease,
        background 160ms ease,
        color 160ms ease;
}

.filter-bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px 28px;
    max-width: 100%;
    margin-bottom: 36px;
}

.button {
    width: 100%;
}


.works-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 26px;
    width: min(1200px, 90%);
    margin: auto;
}

.work-card p {
    margin: 0;
    color: var(--black);
    font-size: 0.88rem;
    font-weight: normal;
    line-height: 1.7;
}

.work-card figure img {
    width: 100%;
    aspect-ratio: 1.34 / 1;
    object-fit: cover;
}

.work-card figure {
    margin: 0 0 14px;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: #eef2f6;
}

.work-card h3 {
    margin-bottom: 2px;
    font-size: 0.98rem;
}

.work-card h3 {
    margin: 0 0 12px;
    color: var(--black);
    font-size: 1.15rem;
    font-weight: normal;
}

.filter-button.is-active {
    color: #fff;
    background: #101010;
}



@media (max-width: 820px) {
    .works-section {
        width: min(calc(100% - 36px), var(--max));
        padding: 56px 0;
    }

    .works-grid {
        padding: 0 6%;
        grid-template-columns: 1fr;
    }

    .filter-bar {
        justify-content: center;
        gap: 10px;
    }

}

@media (max-width: 768px) {

    #services,
    #works {
        margin-top: -120px;
        padding-top: 120px;
    }

    #works {
        margin-bottom: 120px;
    }

    #flow {
        padding-top: 80px;
    }

}

/* ====================
group
==================== */
.group {
    margin: 100px auto 0;
    padding: 1% 0;
    text-align: center;
    background: rgba(244, 241, 235, 0.8);
}

.group h2 {
    font-size: 1.5rem;
    margin: 0 auto;
}

.group p {
    font-size: 16px;
    text-align: center;
}

.group ul {
    max-width: 300px;
    margin: 25px auto 0;
}

.group li {
    margin-bottom: 5rem;
}

.group img {
    max-width: 300px;
    margin: auto;
}

@media (max-width: 820px) {
    .group h2 {
        font-size: 1.2rem;
        margin: 0 auto;
    }

    .group ul {
        max-width: 220px;
        margin: 25px auto 0;
    }

    .group li {
        margin-bottom: 1.3rem;
    }
}

.card-image {
    cursor: pointer;
}

.card {
    cursor: default;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, .15);
}

.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .85);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 99999;
}

.modal {
    display: none;
}

.modal.active {
    display: flex;
}

.modal.show {
    display: flex;
}

.modal-content {
    width: min(1000px, 90%);
    max-height: 90vh;
}

.modal img,
.modal video {
    width: 100%;
    display: none;
    border-radius: 10px;
}

.modal video {
    max-height: 90vh;
}

.modal-close {
    position: absolute;
    top: 25px;
    right: 35px;
    color: #fff;
    font-size: 50px;
    cursor: pointer;
}

.novelty-link {
    display: inline-block;
    margin-top: 8px;
    padding: 6px 14px;
    border: 1px solid #00AEEF;
    border-radius: 20px;
    color: #00AEEF;
    font-weight: 700;
    text-decoration: none;
    transition: .3s;
}

.novelty-link:hover {
    background: #00AEEF;
    color: #fff;
}

.card-image {
    position: relative;
}

.card[data-type="video"] .card-image::after,
.card[data-type="youtube"] .card-image::after {
    content: "▶ 動画を見る";
    position: absolute;
    right: 12px;
    bottom: 12px;
    background: rgba(255, 0, 0, .7);
    color: #fff;
    font-size: 13px;
    padding: 6px 12px;
    border-radius: 20px;
    letter-spacing: .05em;
    pointer-events: none;
    transition: .3s;
}

.card[data-type="video"]:hover .card-image::after,
.card[data-type="youtube"]:hover .card-image::after {
    background: #ff0000;
}

.fixed-bg {
    position: fixed;
    left: 0;
    bottom: 0;
    width: 600px;
    height: 336px;
    background: url("../img/ink_bg.jpg") no-repeat center center / contain;
    opacity: 0.3;
    z-index: -999;
    pointer-events: none;
}

.fixed-bg2 {
    position: fixed;
    right: -50px;
    top: -20px;
    width: 400px;
    height: 300px;
    background: url("../img/ink_bg02.jpg") no-repeat center center / contain;
    opacity: 0.3;
    z-index: -999;
    pointer-events: none;
}

@media screen and (max-width: 640px) {
    .fixed-bg {
        left: 0;
        bottom: 0;
        width: 300px;
        height: 236px;
    }

    .fixed-bg2 {
        top: -50px;
        right: -100px;
        width: 300px;
        height: 300px;
    }
}


/* ====================
map
==================== */
.fig__map {
    height: 0;
    margin: 70px auto 0;
    overflow: hidden;
    padding-top: 43.375%;
    position: relative
}

@media (max-width:800px) {
    .fig__map {
        padding-top: 63.375%
    }
}

.fig__map iframe {
    width: 50%;
    height: 80%;
    left: 25%;
    position: absolute;
    top: 0;
}

@media (max-width:768px) {
    .fig__map iframe {
        width: 100%;
        height: 100%;
        left: 0%;
    }
}

.statement {
    margin-top: 70px;
}

.statement h3 {
    text-align: left;
    padding-left: 5%;
}

@media screen and (max-width: 640px) {
    .statement {
        margin-top: 40px;
    }

    .statement .section {
        line-height: 6em;
        max-width: 85%;
    }

    .statement .h2 {
        font-size: 18px;
    }

    .statement .h3 {
        font-size: 16px;
    }

    .para--laed {
        font-size: 14px;
        font-weight: 400;
        font-style: normal;
    }
}

.statement .section {
    max-width: 650px;
    margin: auto;
    padding: 1em 0;
    line-height: 3em;
    background-color: #F4F1EB;
}

.statement .section p {
    line-height: 2;
    padding: 0 5%;
}

.statement .h2,
.statement .h3 {
    font-weight: 700;
    font-style: normal;
    line-height: 1.5;
}

.statement .h2 {
    font-size: 25px;
    margin: 1em auto 1.25em;
    text-align: left;
}

.statement .h3 {
    font-size: 20px;
    margin: 1em auto 0;
}

.statement .section h2 {
    text-align: center;
}

.para--president {
    text-align: right;
    margin-top: 1em;
}


@media screen and (max-width: 640px) {
    .statement .section {
        max-width: 350px;
        padding: .5em 0;
    }

    .statement .h2 {
        font-size: 18px;
        margin: 0 auto;
    }
}

/* --------------------------------
accordion
-------------------------------- */

.blockTitle h2 {
    font-size: 20px;
    display: block;
    width: 100%;
    margin: 0 auto;
    cursor: pointer;
}

.blockTitle h2:hover {
    opacity: 0.75;
}

.accordion .content {
    display: none;
    padding-top: 3%;
}

.accordion .content p.close {
    display: block;
    width: 100px;
    height: 30px;
    background-image: url(../img/arrow.svg);
    background-repeat: no-repeat;
    background-size: contain;
    background-position: center;
    transition: all 0.3s;
    margin: 2rem auto 1rem;
    cursor: pointer;
    position: sticky;
    padding: 0;
}

.accordion .content p.close:hover {
    opacity: 0.75;
}

@media screen and (max-width: 768px) {
    .close {
        width: 12.2vw;
        height: 4.5vw;
        margin: 7rem auto 3rem;
    }
}

@media screen and (max-width: 500px) {
    .close {
        margin: -2rem auto 3rem;
    }
}

@media screen and (max-width: 350px) {
    .blockTitle h2 {
        max-width: 80%;
    }

    .accordion .content p {
        max-width: 83%;
    }
}

.underline-text {
    text-decoration: underline;
}


.floorSwiper {
    width: 100%;
    max-width: 1000px;
    margin: 40px auto;
}

.floorSwiper img {
    width: 100%;
    max-width: 900px;
    height: auto;
    display: block;
    margin: auto;
}

.floorSwiper {
    position: relative;
}

.floorSwiper .swiper-pagination {
    position: relative;
    margin-top: 20px;
}

.floorSwiper .swiper-button-prev,
.floorSwiper .swiper-button-next {
    color: #000;
}

.floorSwiper .swiper-pagination-bullet {
    background: #999;
}

.floorSwiper .swiper-pagination-bullet-active {
    background: #000;
}

area {
    cursor: pointer;
}

@media screen and (max-width: 500px) {
    .floorSwiper {
        width: 85%;
    }

}

/* ========================================
   COLUMN
======================================== */

.column {
    padding: 100px 0;
    background: #fffceb;
}

.column .section-description {
    text-align: center;
    margin: 15px auto 50px;
    color: #666;
    line-height: 1.8;
}


/* 記事一覧 */

.column-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.column-description {
    margin: 0 0 20px;
    color: #666;
    font-size: 14px;
    line-height: 1.8;

    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* カード */

.column-card {
    background: #fff;
    border: 2px solid var(--border);
    overflow: hidden;
    transition: transform .3s ease, box-shadow .3s ease;
    border-radius: 5%;
}

.column-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, .12);
}


/* リンク */

.column-card a {
    display: block;
    height: 100%;
    color: inherit;
    text-decoration: none;
}


/* アイキャッチ */

.column-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: #eee;
}

.column-image img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s ease;
}

.column-card:hover .column-image img {
    transform: scale(1.05);
}


/* 本文 */

.column-body {
    padding: 25px;
}


/* 投稿日 */

.column-body time {
    display: block;
    margin-bottom: 10px;
    color: #888;
    font-size: 13px;
    letter-spacing: .05em;
}


/* タイトル */

.column-body h3 {
    margin: 0 0 15px;
    font-size: 18px;
    line-height: 1.6;
}


/* 概要 */

.column-body p {
    margin: 0 0 20px;
    color: #666;
    font-size: 14px;
    line-height: 1.8;
}


/* 続きを読む */

.column-readmore {
    display: inline-block;
    font-size: 13px;
    font-weight: 500;
}


/* note一覧ボタン */

.column-more {
    margin-top: 50px;
    text-align: center;
}

.column-more a {
    display: inline-block;
    padding: 14px 40px;
    border: 1px solid #111;
    color: #111;
    text-decoration: none;
    transition: all .3s ease;
}

.column-more a:hover {
    background: #111;
    color: #fff;
}


/* RSSエラー */

.column-error {
    grid-column: 1 / -1;
}


/* ========================================
   COLUMN SP
======================================== */

@media (max-width: 768px) {

    .column {
        padding: 70px 0;
    }

    .column .section-description {
        margin-bottom: 35px;
        padding: 0 15px;
        font-size: 14px;
    }

    .column-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    /* スマホでは6記事まで表示 */
    .column-card:nth-child(n+7) {
        display: none;
    }

    .column-body {
        padding: 20px;
    }

    .column-body h3 {
        font-size: 17px;
    }

    .column-more {
        margin-top: 35px;
    }

}