@charset "UTF-8";

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

html {
    scroll-behavior: smooth;
}

body {
    font-family:  "Yu Gothic", "YuGothic", "Hiragino Sans", "Hiragino Kaku Gothic ProN", sans-serif;
    font-weight: 300;
    color: #555;
    line-height: 1.8;
    background-color: #fff;
    letter-spacing: 0.05em;
    -webkit-font-smoothing: antialiased;
    
    max-width: 640px;
    margin: 0 auto;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.05); 
    overflow-x: hidden;
}

.fv-title {
    font-size: clamp(30px, 8vw, 50px);
}


.section-title {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: clamp(20px, 5vw, 26px);
    font-weight: 500; 
    color: #333; 
    letter-spacing: 0.15em; 
}

.section-title span {
    font-family: "Tenor Sans", sans-serif;
    font-weight: 400;
    font-size: clamp(10px, 2.5vw, 12px);
    letter-spacing: 0.3em;
    color: #999; 
    margin-bottom: 12px;
    text-transform: uppercase;
    display: block; 
}

.section-title .title-logo {
    height: 0.8em;
    width: auto;
    display: inline-block;
    vertical-align: middle;
    margin: 1.1em;
    opacity: 0.6; 
}

h2.section-title::after {
    content: "";
    width: 30px;
    height: 1px;
    background-color: #ddd;
    margin-top: 20px;
}

.intro-text, 
.product-name, 
.btn-outline, 
.qa-q, 
.qa-a-inner p, 
.btn-contact {
    font-size: clamp(12px, 3vw, 14px);
}

.product-price, 
.footer-contact .time, 
.footer-links,
.product-bottom .btn-buy {
    font-size: clamp(10px, 2.5vw, 12px);
}

.footer-contact .tel {
    font-size: clamp(14px, 3.5vw, 16px);
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: opacity 0.3s;
}

a:hover {
    opacity: 0.7;
}

ul {
    list-style: none;
}

.container {
    padding: 0 20px;
}
.text-bold {
    font-weight: bold;
}

.section {
    margin: 100px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
    font-weight: 300;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.section-line {
    width: 1px;
    height: 100px;
    background-color: #bbb;
    margin: 40px auto 40px;
    transform: scaleY(0);
}

.section-line.is-visible {
    animation: lineLoop 4.5s ease-in-out infinite;
}

@keyframes lineLoop {
    0% {
        transform: scaleY(0);
        transform-origin: top;
    }
    25% {
        transform: scaleY(1);
        transform-origin: top;
    }
    26% {
        transform: scaleY(1);
        transform-origin: bottom;
    }
    75% {
        transform: scaleY(0);
        transform-origin: bottom;
    }
    100% {
        transform: scaleY(0);
        transform-origin: bottom;
    }
}

.header {
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 640px;
    display: flex;
    justify-content: space-between;
    align-items: center; 
    padding: 20px;
    z-index: 2000;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.header img {
    width: 100px;
    height: auto;
    filter: brightness(0) invert(1);
}

.header.is-hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.fv-window {
    position: relative;
    width: 100%;
    aspect-ratio: 9 / 16;
    clip-path: inset(0 0 0 0);
}

.fv-window .bg-fixed-img {
    aspect-ratio: 9 / 16;
    object-position: top center;
}

.fv-title {
    color: #fff;
    font-weight: 300;
}

.gift-list {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 50px;
    margin-left: auto;
    margin-right: auto;
}

.gift-item {
    width: 100%;
    text-align: center;
    padding: 20px 0;
}

.gift-separator {
    width: 20px;
    height: 1px;
    background-color: #eee;
    margin: 20px 0;
}

.gift-label {
    letter-spacing: 0.4em;
    text-align: center;
    color: #999;
    margin-bottom: 18px;
}

.gift-date-wrap {
    font-size: clamp(18px, 5vw, 26px);
    color: #333;
    font-weight: 300;
}

.gift-date-wrap small {
    font-size: 0.45em;
    vertical-align: middle;
    margin-left: 4px;
    color: #999;
}

.gift-date-wrap .tilde {
    margin: 0 10px;
    color: #eee;
    font-weight: 200;
}

.gift-sub {
    font-size: 11px;
    color: #999;
    margin-top: 12px;
}

.gift-name {
    font-size: clamp(16px, 4vw, 18px);
    color: #555;
    font-weight: 500;
    letter-spacing: 0.05em;
}


@media (max-width: 540px) {
    .gift-spec {
        gap: 10px;
    }
}

.gift-list {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 50px;
}

.gift-about {
    width: 100%;
    margin-top: 40px;
}

.gift-showcase {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
}

.showcase-img-wrap {
    position: relative;
    width: 100%;
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    grid-template-rows: auto;
    margin: 20px 0;
}

.img-box {
    position: relative;
}

.img-box img {
    width: 100%;
    height: auto;
    display: block;
}

.img-box.img-1 {
    grid-column: 1 / 9;
    grid-row: 1; 
    z-index: 1;
}

.img-box.img-2 {
    grid-column: 6 / 13;
    grid-row: 2; 
    margin-top: -30%; 
    z-index: 2;
}

.showcase-content {
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.feature-text {
    font-family: "Yu Gothic", "YuGothic", "Hiragino Sans", "Hiragino Kaku Gothic ProN", sans-serif;
    font-weight: 300; 
    font-size: clamp(12px, 3vw, 14px);
    color: #777;
    line-height: 2.2;
}

.gift-spec {
    display: flex;
    justify-content: center;
    gap: 20px;
    font-size: 11px;
    color: #888;
}

.gift-spec li span {
    font-family: 'Tenor Sans', sans-serif;
    margin-right: 8px;
    color: #ccc;
}

@media (max-width: 540px) {
    .feature-text {
        padding: 0 20px;
    }
    .gift-spec {
        flex-direction: column;
        gap: 8px;
    }
}

.howto-simple {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 20px 0;
    align-items: center; 
    width: 100%;
}

.step-item {
    display: flex;
    align-items: flex-start; 
    justify-content: center;
    width: 100%;
    padding: 60px 0; 
    border-bottom: 1px solid #eee; 
    gap: 50px;
}

.step-item:last-child {
    border-bottom: none;
}

.step-num-side {
    flex-shrink: 0;
    width: 80px; 
    text-align: left;
    color: #d8d8d8;
    font-family: 'Noto Serif JP', serif;
}

.step-label {
    display: block;
    font-size: 12px; 
    font-family: "Hind", sans-serif;
    font-weight: 300;
    font-size: 0.9rem;
    letter-spacing: 0.2em;
    letter-spacing: 0.2em;
    margin-bottom: -5px;
    color: #999;
}

.step-digit {
    font-size: 70px;
    font-family: 'Cormorant Garamond', serif;
    font-weight: 400;
    line-height: 0.9;
    color: #555;
}

.step-content {
    width: 280px; 
    padding-top: 15px;
}

.step-title {
    font-size: 16px;
    font-weight: 500;
    color: #555;
    margin-bottom: 10px;
    line-height: 1.5;
}

.step-text {
    font-size: 13px;
    line-height: 1.8;
}

@media (max-width: 540px) {
    .step-item {
        gap: 20px;
        padding: 30px 10px;
    }
    .step-num-side {
        width: 70px;
    }
    .step-digit {
        font-size: 60px;
    }
    .step-content {
        width: 65%;
        padding-top: 12px;
    }
}

.intro-text {
    text-align: center;
    color: #777;
    line-height: 2.2;
    margin: 0 auto 60px;
}

.swiper {
    width: 100%;
}

.swiper-slide img {
    display: block;
    width: 100%;
    height: auto;
    object-fit: cover;
    background-color: #f5f5f5;
}

.howto-image-placeholder {
    text-align: center;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr); 
    gap: 30px 15px; 
    margin-bottom: 50px;
}

.product-item {
    display: flex;
    flex-direction: column;
}

.product-img {
    background-color: #f5f5f5;
    aspect-ratio: 3 / 4;
    margin-bottom: 15px;
    overflow: hidden;
}

.product-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-name {
    font-weight: 400;
    margin-bottom: 10px;
    color: #555;
    line-height: 1.4;
}

.product-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
}

.product-price {
    color: #999;
}

.btn-buy {
    background-color: #555;
    color: #fff;
    padding: 6px 20px;
    letter-spacing: 0.1em;
}

.center-btn-wrapper {
    text-align: center;
    margin-top: 40px;
}

.btn-outline {
    display: block;
    width: 80%;
    margin: 0 auto;
    border: 1px solid #ccc;
    color: #777;
    padding: 20px 20px;
    border-radius: 40px;
    transition: all 0.3s ease;
}

.btn-outline:hover {
    background-color: #f9f9f9;
    border-color: #999;
}

.qa-list {
    margin: 0 auto;
}

.qa-item {
    margin-bottom: 15px;
}

.qa-q {
    background-color: #555;
    color: #fff;
    padding: 15px;
    cursor: pointer;
    position: relative;
}

.qa-q::after {
    content: '';
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
    width: 10px;
    height: 10px;
    border-right: 2px solid #fff;
    border-bottom: 2px solid #fff;
    transition: transform 0.3s ease;
}

.qa-item.is-open .qa-q::after {
    transform: translateY(-50%) rotate(-135deg);
}

.qa-a {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.4s ease;
    overflow: hidden;
}

.qa-item.is-open .qa-a {
    grid-template-rows: 1fr;
}

.qa-a-inner {
    min-height: 0;
}

.qa-a-inner p {
    border: 1px solid #ccc;
    border-top: none;
    padding: 30px 20px;
    color: #777;
    line-height: 2;
    margin: 0;
}

.bg-fixed-img {
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 640px;
    height: auto;
    object-fit: cover;
    z-index: -1;
}

.parallax-window {
    position: relative;
    width: 100%;
    aspect-ratio: 3 / 2;
    clip-path: inset(0 0 0 0); 
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 0, 0, 0.1);
}

.parallax-window::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.1);
    z-index: 0;
}

.parallax-window .bg-fixed-img {
    object-position: center;
}

.parallax-content {
    position: relative;
    z-index: 1;
    background-color: transparent;
    
    text-align: center;
    color: #fff;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column; 
    justify-content: center; 
    align-items: center; 
}

.parallax-content img {
    width: 35%; 
    height: auto;
    filter: brightness(0) invert(1);
}

.footer {
    background-color: #f5f5f5;
    padding: 50px 0;
    text-align: center;
}

.footer-contact {
    margin-bottom: 20px;
}

.footer-contact .tel {
    color: #555;
    margin-bottom: 5px;
}

.footer-contact .time {
    color: #888;
}

.btn-contact {
    display: inline-block;
    background-color: #555;
    color: #fff;
    padding: 12px 60px;
    border-radius: 30px;
    margin-bottom: 30px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 15px;
    color: #777;
}

.copyright {
    font-size: 10px; 
    color: #aaa;
    margin-top: 20px;
    letter-spacing: 0.05em;
    font-family: sans-serif;
}


.back-to-top {
    position: fixed; 
    bottom: 30px;
    right: 20px;
    width: 40px;
    height: 40px;
    background-color: rgba(0, 0, 0, 0.15); 
    border: 1px solid #fff; 
    border-radius: 50%;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.back-to-top::after {
    content: '';
    position: absolute;
    top: 55%; 
    left: 50%;
    width: 14px;
    height: 12px;
    border-top: 1px solid #fff; 
    border-left: 1px solid #fff;
    transform: translate(-50%, -50%) rotate(45deg);
}

.back-to-top:hover {
    background-color: rgba(0, 0, 0, 0.4);
}


.back-to-top.is-show {
    opacity: 1;
    visibility: visible;
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.product-grid .product-item:nth-child(even) {
    transition-delay: 0.2s;
}