:root {
    --primary-color: #333;
    --accent-color: #D4AF37;
    /* Champagne Gold */
    --bg-light: #F9F9F9;
    --text-color: #444;
    --white: #FFF;
    --font-serif: 'Shippori Mincho', serif;
    --font-sans: 'Noto Sans JP', sans-serif;
}

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

body {
    font-family: var(--font-sans);
    color: var(--text-color);
    line-height: 1.8;
    background-color: var(--white);
}

h1,
h2,
h3,
h4 {
    font-family: var(--font-serif);
    font-weight: 500;
    letter-spacing: 0.05em;
}

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

a:hover {
    opacity: 0.7;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-padding {
    padding: 80px 0;
}

.bg-light {
    background-color: var(--bg-light);
}

/* Header */
.site-header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    padding: 15px 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

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

.logo {
    font-size: 24px;
    font-weight: bold;
}

.btn-nav {
    font-size: 14px;
    border: 1px solid var(--primary-color);
    padding: 8px 20px;
    border-radius: 30px;
}

/* Hero */
.hero {
    position: relative;
    height: 100vh;
    height: 100svh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    /* Align content to the left */
    text-align: left;
    /* Left align text */
    background-color: #eee;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('assets/images/hero_product_right.png') center/cover no-repeat;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
    /* Limit width to keep text on the left */
    padding-left: 5%;
    /* Add some spacing from the left edge */
    text-shadow: 0 2px 10px rgba(255, 255, 255, 0.8);
    /* Ensure text readability */
}

.hero-sub {
    font-size: 1.4rem;
    margin-bottom: 20px;
    font-family: var(--font-serif);
    color: #333;
    font-weight: bold;
}

.hero-title {
    font-size: 4rem;
    line-height: 1.3;
    margin-bottom: 30px;
    color: #222;
}

.hero-catch {
    font-size: 1.2rem;
    margin-bottom: 50px;
    opacity: 0.9;
    color: #444;
}

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

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

.btn-main {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--white);
    padding: 15px 40px;
    border-radius: 50px;
    font-size: 1.1rem;
    letter-spacing: 0.1em;
}

/* Intro */
.intro {
    text-align: center;
}

.section-title {
    font-size: 2rem;
    margin-bottom: 40px;
    line-height: 1.6;
}

.intro-text p {
    margin-bottom: 20px;
}

.highlight-text {
    font-size: 1.5rem;
    font-family: var(--font-serif);
    color: var(--primary-color);
    margin: 30px 0;
    position: relative;
    display: inline-block;
}

.highlight-text::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background-color: var(--accent-color);
}

/* Solution */
.solution {
    text-align: center;
}

.solution-desc {
    margin-bottom: 50px;
}

.features {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 30px;
}

.feature-card {
    flex: 1;
    min-width: 250px;
    padding: 30px;
    background: var(--white);
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.03);
}

.feature-img-container {
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
}

.feature-img {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: 50%;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.feature-card h4 {
    font-size: 1.2rem;
    margin-bottom: 15px;
}

/* Authority */
.authority-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.authority-image {
    flex: 1;
}

.authority-text {
    flex: 1;
}

.img-placeholder {
    width: 100%;
    height: 300px;
    background-color: #ddd;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #888;
    border-radius: 10px;
}

.section-title-sm {
    font-size: 1.8rem;
    margin-bottom: 20px;
    font-family: var(--font-serif);
}

.achievements {
    margin-top: 30px;
    list-style: none;
}

.achievements li {
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
    font-weight: bold;
}

.achievements li::before {
    content: '✔';
    position: absolute;
    left: 0;
    color: var(--accent-color);
}

/* Voices */
.voices {
    text-align: center;
    overflow: hidden;
    /* Prevent scrollbar if slider goes wide */
}

.voice-slider-container {
    width: 100%;
    overflow: hidden;
    padding: 20px 0;
    position: relative;
}

.voice-track {
    display: flex;
    gap: 30px;
    width: max-content;
    animation: scroll 40s linear infinite;
}

/* Pause animation on hover for better readability */
.voice-track:hover {
    animation-play-state: paused;
}

@keyframes scroll {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(calc(-280px * 5 - 30px * 5));
        /* Card width + gap * number of unique items */
    }
}

.voice-card {
    background: var(--white);
    padding: 30px;
    border-radius: 10px;
    text-align: left;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.03);
    width: 280px;
    /* Fixed width for slider */
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    /* Center content including image */
}

.voice-img-container {
    width: 80px;
    height: 80px;
    margin-bottom: 15px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid var(--accent-color);
}

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

.voice-comment {
    font-style: italic;
    margin-bottom: 20px;
    font-size: 0.95rem;
    line-height: 1.6;
}

.voice-user {
    font-size: 0.9rem;
    color: #888;
    width: 100%;
    text-align: right;
    margin-top: auto;
    /* Push to bottom */
}

/* Offer */
.offer {
    text-align: center;
}

.product-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 50px;
    margin-top: 50px;
}

.product-img {
    width: 300px;
}

.product-info {
    text-align: left;
}

.product-info h4 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.price {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 30px;
    font-family: var(--font-serif);
}

.tax {
    font-size: 1rem;
    font-weight: normal;
}

.btn-large {
    padding: 20px 60px;
    font-size: 1.3rem;
}

.note {
    margin-top: 15px;
    font-size: 0.9rem;
    color: #d00;
}

/* FAQ */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-list dt {
    font-weight: bold;
    margin-top: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
}

.faq-list dd {
    margin-top: 10px;
    margin-bottom: 30px;
    padding-left: 20px;
}

/* Footer */
.site-footer {
    background: #333;
    color: #fff;
    padding: 40px 0;
    text-align: center;
}

.footer-links {
    margin-top: 20px;
}

.footer-links a {
    color: #aaa;
    margin: 0 10px;
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .authority-content,
    .product-display {
        flex-direction: column;
    }

    .product-info {
        text-align: center;
    }
}

/* Product Grid */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.product-card {
    background: var(--white);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
}

.product-img-sm img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 15px;
}

.product-card h4 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    min-height: 3em;
    /* Align heights */
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-card .price {
    font-size: 1.4rem;
    margin-bottom: 15px;
}

.btn-sm {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--white);
    padding: 10px 20px;
    border-radius: 30px;
    font-size: 0.9rem;
    width: 100%;
}

/* Responsive adjustments for grid */
@media (max-width: 768px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        /* 2 columns on mobile */
        gap: 15px;
    }

    .product-card {
        padding: 15px;
    }

    .product-card h4 {
        font-size: 0.9rem;
    }

    .product-card .price {
        font-size: 1.1rem;
    }
}

/* Usage Proposal */
.usage-proposal {
    text-align: center;
    background-color: #fff;
}

.section-desc {
    margin-bottom: 40px;
    color: #666;
}

.usage-comparison {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.usage-card {
    flex: 1;
    min-width: 280px;
    max-width: 350px;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    position: relative;
}

.usage-card.daily {
    background-color: #f5f5f5;
    border: 1px solid #eee;
}

.usage-card.special {
    background-color: #fffbf0;
    /* Light gold tint */
    border: 2px solid var(--accent-color);
    box-shadow: 0 10px 25px rgba(212, 175, 55, 0.15);
    transform: scale(1.05);
    z-index: 1;
}

.usage-img-container {
    width: 100%;
    height: 150px;
    margin-bottom: 15px;
    border-radius: 10px;
    overflow: hidden;
}

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

.usage-sub {
    font-weight: bold;
    color: #555;
    margin-bottom: 10px;
}

.usage-text {
    font-size: 0.9rem;
    color: #777;
    line-height: 1.6;
}

.usage-arrow {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--accent-color);
    font-weight: bold;
    font-family: var(--font-serif);
}

.arrow-icon {
    font-size: 2rem;
}

.usage-calendar-visual {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
    background-color: #fafafa;
    border-radius: 10px;
    border: 1px dashed #ccc;
}

.calendar-note {
    font-family: var(--font-serif);
    color: #555;
    font-size: 1.1rem;
}

/* Brand Story */
.brand-story {
    background: linear-gradient(to bottom, #fff, #fffbf0);
    text-align: center;
    padding: 100px 0;
}

.story-content {
    max-width: 700px;
    margin: 0 auto;
}

.story-title {
    font-size: 2.5rem;
    font-family: var(--font-serif);
    margin-bottom: 50px;
    line-height: 1.4;
    color: #333;
}

.story-text {
    font-size: 1.1rem;
    line-height: 2.2;
    margin-bottom: 30px;
    font-family: var(--font-serif);
    color: #444;
}

.story-sign {
    margin-top: 50px;
    text-align: right;
    font-family: var(--font-serif);
    font-style: italic;
    color: #666;
}

@media (max-width: 768px) {
    .usage-comparison {
        flex-direction: column;
        gap: 30px;
    }

    .usage-arrow {
        transform: rotate(90deg);
        margin: 10px 0;
    }

    .usage-arrow span {
        display: none;
        /* Hide text on mobile to save space */
    }

    .story-title {
        font-size: 2rem;
    }
}

/* FAQ Section */
.faq-grid {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.faq-item {
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.faq-item:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.06);
    transform: translateY(-2px);
}

.faq-item.active {
    border-color: var(--accent-color);
}

.faq-question {
    padding: 20px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    background: #fff;
    transition: background-color 0.3s ease;
}

.faq-question h4 {
    margin: 0;
    font-size: 1.1rem;
    color: #333;
    font-weight: 500;
    flex: 1;
    padding-right: 20px;
    line-height: 1.5;
}

.faq-question h4::before {
    content: "Q.";
    color: var(--accent-color);
    font-family: var(--font-serif);
    font-weight: bold;
    margin-right: 10px;
    font-size: 1.2rem;
}

.toggle-icon {
    font-size: 1.5rem;
    color: #ccc;
    transition: transform 0.3s ease, color 0.3s ease;
    font-weight: 300;
    flex-shrink: 0;
}

.faq-item.active .toggle-icon {
    transform: rotate(45deg);
    color: var(--accent-color);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out, opacity 0.3s ease;
    opacity: 0;
    background-color: #fafafa;
}

.faq-item.active .faq-answer {
    opacity: 1;
    /* max-height is set via JS */
}

.faq-answer p {
    padding: 20px 25px;
    margin: 0;
    color: #555;
    line-height: 1.8;
    font-size: 0.95rem;
    border-top: 1px solid #f0f0f0;
}

/* Image Break Section */
.image-break {
    padding: 40px 0;
    text-align: center;
}

.image-break-content {
    max-width: 1000px;
    margin: 0 auto;
}

.break-img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

@media (max-width: 768px) {
    .break-img {
        width: 80%;
        /* Make it smaller width-wise */
        max-width: 300px;
        /* Ensure it doesn't get too big */
        height: auto;
        aspect-ratio: 3 / 4;
        /* Vertical shape */
        object-fit: cover;
        object-position: 80% center;
        /* Focus on the right side */
        margin: 0 auto;
        /* Center the image */
        display: block;
    }
}

.media-section {
    background-color: #fcfcfc;
    overflow: hidden;
}

.media-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
    max-width: 900px;
    margin: 0 auto;
}

.media-images {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 300px;
    width: 100%;
}

.media-cover {
    width: 180px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
    transform: rotate(-10deg) translateX(20px);
    z-index: 2;
    border-radius: 5px;
    transition: transform 0.3s ease;
}

.media-article {
    width: 240px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    transform: rotate(5deg) translateX(-20px);
    z-index: 1;
    border-radius: 5px;
    transition: transform 0.3s ease;
}

.media-images:hover .media-cover {
    transform: rotate(-12deg) translateX(10px) scale(1.05);
}

.media-images:hover .media-article {
    transform: rotate(7deg) translateX(-10px) scale(1.05);
}

.media-text {
    text-align: center;
    max-width: 500px;
}

.media-label {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    color: var(--accent-color);
    margin-bottom: 20px;
    font-weight: bold;
    letter-spacing: 0.05em;
    display: inline-block;
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 5px;
}

.media-comment {
    font-size: 1rem;
    color: #555;
    line-height: 1.8;
}

@media (min-width: 768px) {
    .media-content {
        flex-direction: row;
        justify-content: center;
        text-align: left;
    }

    .media-images {
        width: 50%;
        height: auto;
        justify-content: flex-end;
        padding-right: 40px;
    }

    .media-text {
        width: 50%;
        text-align: left;
        padding-left: 20px;
    }

    .media-cover {
        width: 220px;
    }

    .media-article {
        width: 300px;
    }
}

/* Mobile Hero Fix */
@media (max-width: 768px) {
    .hero {
        align-items: center;
        /* Center vertically */
        padding-bottom: 80px;
        /* Reduced padding */
        justify-content: flex-start;
        /* Align content to left */
    }

    .hero-bg {
        background-position: 70% center;
        /* Shift image to show bottle on right */
        background-size: cover;
    }

    .hero-content {
        background: rgba(255, 255, 255, 0.4);
        /* Increased transparency */
        backdrop-filter: blur(2px);
        /* Reduced blur */
        padding: 20px 15px;
        border-radius: 10px;
        margin: 0 0 0 15px;
        /* Left margin only */
        box-shadow: none;
        /* Remove shadow to reduce "box" feel */
        max-width: 65%;
        /* Narrower width to reveal right side */
        text-align: left;
    }

    .hero-sub {
        font-size: 0.9rem;
        /* Smaller font */
        margin-bottom: 8px;
        color: #222;
        /* Darker for contrast on transparent bg */
    }

    .hero-title {
        font-size: 1.6rem;
        /* Smaller font */
        margin-bottom: 10px;
        line-height: 1.4;
        color: #111;
    }

    .hero-catch {
        font-size: 0.9rem;
        margin-bottom: 15px;
        color: #333;
        font-weight: 500;
    }

    .btn-main {
        padding: 10px 25px;
        font-size: 0.9rem;
    }

    /* Intro Section Mobile */
    .section-title {
        font-size: 1.2rem;
        /* Reduced from 1.4rem to prevent wrapping */
        line-height: 1.6;
    }
}

/* Footer CTA */
.footer-cta-pc {
    margin: 20px 0;
    display: none;
    /* Hidden by default, shown on PC via media query if needed, but user asked for it on PC too. Let's make it visible on PC and hidden on mobile if sticky is there. */
}

@media (min-width: 769px) {
    .footer-cta-pc {
        display: block;
    }
}

/* Sticky Footer (Mobile) */
.sticky-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    padding: 15px;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    display: flex;
    justify-content: center;
    backdrop-filter: blur(5px);
}

.btn-sticky {
    display: block;
    width: 100%;
    max-width: 400px;
    background-color: var(--accent-color);
    color: #fff;
    text-align: center;
    padding: 15px;
    border-radius: 50px;
    font-weight: bold;
    font-size: 1.1rem;
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.4);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(212, 175, 55, 0.7);
    }

    70% {
        box-shadow: 0 0 0 10px rgba(212, 175, 55, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(212, 175, 55, 0);
    }
}

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