/*--------------------------------------------------------------
  Design System & Variables
--------------------------------------------------------------*/
:root {
    --color-primary: #003366;
    --color-primary-light: #004d99;
    --color-secondary: #001f3f;
    --color-accent: #f39c12;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-white: #ffffff;
    --color-bg-light: #f8f9fa;
    --color-border: #e0e0e0;
    
    --font-main: 'Noto Sans JP', sans-serif;
    
    --container-width: 1100px;
    --container-narrow: 800px;
    
    --transition: all 0.3s ease;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
}

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

ul {
    list-style: none;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.container--narrow {
    max-width: var(--container-narrow);
}

.section {
    padding: 100px 0;
}

.section__header {
    text-align: center;
    margin-bottom: 60px;
}

.section__title {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.4;
}

.section__video {
    max-width: 800px;
    margin: 0 auto 40px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.section__video video {
    width: 100%;
    display: block;
}

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

.pc-only { display: block; }
@media (max-width: 768px) {
    .pc-only { display: none; }
    .section { padding: 60px 0; }
    .section__title { font-size: 1.5rem; }
}

/*--------------------------------------------------------------
  Buttons
--------------------------------------------------------------*/
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-weight: 700;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    border: none;
}

.btn--primary {
    background-color: var(--color-accent);
    color: var(--color-white);
}

.btn--primary:hover {
    background-color: #d68910;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(243, 156, 18, 0.3);
}

.btn--outline {
    background-color: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
}

.btn--outline:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.btn--outline-white {
    background-color: transparent;
    border: 2px solid var(--color-white);
    color: var(--color-white);
}

.btn--outline-white:hover {
    background-color: var(--color-white);
    color: var(--color-primary);
}

.btn--large {
    padding: 18px 48px;
    font-size: 1.1rem;
}

.btn--full {
    width: 100%;
}

/*--------------------------------------------------------------
  Header
--------------------------------------------------------------*/
.header {
    height: 80px;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.header__inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo__text {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--color-primary);
    letter-spacing: -0.5px;
}

.header__list {
    display: flex;
    gap: 32px;
}

.header__list a {
    font-weight: 500;
    font-size: 0.95rem;
}

.header__list a:hover {
    color: var(--color-accent);
}

@media (max-width: 768px) {
    .header__nav, .header__cta { display: none; }
    .header { height: 60px; }
}

/*--------------------------------------------------------------
  Hero
--------------------------------------------------------------*/
.hero {
    position: relative;
    height: 80vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background-color: #1a1a1a;
}

.hero__bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.hero__bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 1;
}

.hero__bg::after {
    display: none;
}

.hero__content {
    position: relative;
    z-index: 10;
    color: var(--color-white);
    background: rgba(20, 60, 20, 0.7);
    padding: 50px;
    border-radius: 12px;
    max-width: 850px;
}

.hero__title-sub {
    display: block;
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: 16px;
    letter-spacing: 0.1em;
}

.hero__title-main {
    display: block;
    font-size: 4rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 24px;
    text-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
}

.hero__text {
    font-size: 1.25rem;
    margin-bottom: 40px;
    opacity: 1;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.hero__btns {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

@media (max-width: 768px) {
    .hero { height: auto; padding: 100px 0; }
    .hero__content { padding: 40px 24px; border-radius: 0; max-width: 100%; }
    .hero__title-main { font-size: 2.0rem; }
    .hero__text { font-size: 1rem; }
    .hero__btns { flex-direction: column; }
}

/*--------------------------------------------------------------
  About
--------------------------------------------------------------*/
.about__content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about__text {
    margin-bottom: 24px;
    font-size: 1.1rem;
}

.about__text--highlight {
    font-weight: 700;
    font-size: 1.3rem;
    color: var(--color-primary);
    margin-top: 40px;
    padding: 30px;
    background-color: var(--color-bg-light);
    border-radius: 8px;
    border-left: 5px solid var(--color-accent);
}

/*--------------------------------------------------------------
  Price Box (Facility utilization pricing indicator)
--------------------------------------------------------------*/
.price-box {
    margin-top: 40px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    box-shadow: var(--shadow);
    padding: 40px;
    text-align: center;
    transition: var(--transition);
}

.price-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.price-box__current {
    margin-bottom: 35px;
    padding-bottom: 30px;
    border-bottom: 1px dashed var(--color-border);
}

.price-box__title {
    font-size: 1.2rem;
    color: var(--color-text-light);
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: 0.05em;
}

.price-box__value {
    display: inline-flex;
    align-items: baseline;
    justify-content: center;
    gap: 8px;
}

.price-box__unit {
    font-size: 1.4rem;
    color: var(--color-text);
    font-weight: 500;
}

.price-box__number {
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--color-accent);
    line-height: 1;
}

.price-box__currency {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-text);
}

.price-box__vision {
    text-align: left;
}

.price-box__vision-desc {
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.price-box__badge {
    background-color: var(--color-primary);
    color: var(--color-white);
    font-size: 0.8rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 20px;
    letter-spacing: 0.05em;
}

.price-box__vision-desc strong {
    color: var(--color-primary);
}

/* Timeline Flow */
.price-flow {
    position: relative;
    margin-top: 40px;
    padding-bottom: 10px;
}

.price-flow__line {
    position: absolute;
    top: 10px;
    left: 0;
    width: 100%;
    height: 4px;
    background-color: var(--color-bg-light);
    border-radius: 2px;
    z-index: 1;
}

.price-flow__progress {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
    border-radius: 2px;
    transition: width 1s ease-in-out;
    width: var(--progress, 0%);
}

.price-flow__steps {
    position: relative;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    z-index: 2;
}

.price-flow__step {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.price-flow__dot {
    width: 24px;
    height: 24px;
    background-color: var(--color-white);
    border: 3px solid var(--color-border);
    border-radius: 50%;
    margin-bottom: 12px;
    transition: var(--transition);
    position: relative;
}

.price-flow__step.is-active .price-flow__dot {
    border-color: var(--color-accent);
    background-color: var(--color-accent);
    box-shadow: 0 0 10px rgba(243, 156, 18, 0.5);
}

.price-flow__step.is-passed .price-flow__dot {
    border-color: var(--color-primary);
    background-color: var(--color-primary);
}

.price-flow__label {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-text-light);
    margin-bottom: 4px;
}

.price-flow__step.is-active .price-flow__label {
    color: var(--color-primary);
}

.price-flow__price {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-text);
}

.price-flow__step.is-active .price-flow__price {
    color: var(--color-accent);
    font-size: 1.05rem;
}

/* Mobile responsive timeline */
@media (max-width: 768px) {
    .price-box {
        padding: 30px 20px;
    }
    
    .price-box__vision-desc {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .price-flow {
        padding-left: 20px;
    }
    
    .price-flow__line {
        top: 0;
        left: 31px;
        width: 4px;
        height: calc(100% - 20px);
    }
    
    .price-flow__progress {
        width: 100% !important;
        height: var(--progress, 0%);
        background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-accent) 100%);
    }
    
    .price-flow__steps {
        grid-template-columns: 1fr;
        gap: 30px;
        align-items: stretch;
    }
    
    .price-flow__step {
        flex-direction: row;
        text-align: left;
        gap: 16px;
        align-items: center;
    }
    
    .price-flow__dot {
        margin-bottom: 0;
        flex-shrink: 0;
    }
    
    .price-flow__label {
        margin-bottom: 0;
        width: 70px;
    }
}

/*--------------------------------------------------------------
  Sponsors Area
--------------------------------------------------------------*/
.sponsors-area {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px dashed var(--color-border);
    text-align: center;
}

.sponsors-area__title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 30px;
    letter-spacing: 0.05em;
    position: relative;
    display: inline-block;
}

.sponsors-area__title::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 2px;
    background-color: var(--color-accent);
}

.sponsors-area__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    justify-content: center;
    max-width: 600px;
    margin: 0 auto 24px;
}

/* When there's only 1 sponsor, center it nicely */
.sponsors-area__grid:has(> :only-child) {
    max-width: 400px;
}

.sponsor-banner {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.03);
    transition: var(--transition);
}

.sponsor-banner:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.sponsor-banner__inner {
    position: relative;
    width: 100%;
    aspect-ratio: 3.5 / 1;
}

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

.sponsor-banner--comingsoon {
    aspect-ratio: 3.5 / 1;
    background-color: #f1f3f5;
    border: 2.5px dashed var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.sponsor-banner--comingsoon span {
    font-size: 0.95rem;
    font-weight: 700;
    color: #868e96;
    letter-spacing: 0.12em;
}

.sponsors-area__note {
    font-size: 0.95rem;
    color: var(--color-text-light);
}

.sponsors-area__link {
    color: var(--color-primary);
    font-weight: 700;
    text-decoration: underline;
}

.sponsors-area__link:hover {
    color: var(--color-accent);
}

@media (max-width: 768px) {
    .sponsors-area {
        margin-top: 50px;
        padding-top: 30px;
    }
}

/*--------------------------------------------------------------
  Facility Usage
--------------------------------------------------------------*/
.facility-usage {
    background-color: var(--color-white);
}

.facility-usage__box {
    background-color: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 50px 40px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    box-shadow: var(--shadow);
}

.facility-usage__item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    justify-content: space-between;
}

.facility-usage__text {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 24px;
    color: var(--color-text);
    line-height: 1.6;
}

/* LINE Button Style */
.btn--line {
    background-color: #06c755;
    color: var(--color-white);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    width: 100%;
    max-width: 280px;
}

.btn--line:hover {
    background-color: #05b04b;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(6, 199, 85, 0.3);
}

.btn--outline.btn--primary {
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
    background-color: transparent;
    width: 100%;
    max-width: 280px;
}

.btn--outline.btn--primary:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 51, 102, 0.2);
}

@media (max-width: 768px) {
    .facility-usage__box {
        grid-template-columns: 1fr;
        padding: 40px 24px;
        gap: 40px;
    }
    
    .facility-usage__item:not(:last-child) {
        padding-bottom: 40px;
        border-bottom: 1px dashed var(--color-border);
    }
}

/*--------------------------------------------------------------
  Benefits
--------------------------------------------------------------*/
.benefits__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.benefit-card {
    background-color: var(--color-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.benefit-card:hover {
    transform: translateY(-10px);
}

.benefit-card__img img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.benefit-card__icon {
    height: 80px;
    width: 80px;
    background-color: var(--color-bg-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 32px auto 0;
    color: var(--color-primary);
}

.benefit-card__icon svg {
    width: 40px;
    height: 40px;
}

.benefit-card__body {
    padding: 32px;
    text-align: center;
}

.benefit-card__title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.benefit-card__text {
    font-size: 0.95rem;
    color: var(--color-text-light);
}

@media (max-width: 992px) {
    .benefits__grid { grid-template-columns: 1fr; }
}

/*--------------------------------------------------------------
  Ranks
--------------------------------------------------------------*/
.ranks__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: flex-start;
}

.rank-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 48px 32px;
    text-align: center;
    transition: var(--transition);
}

.rank-card--featured {
    border: 3px solid var(--color-primary);
    box-shadow: var(--shadow);
    transform: scale(1.05);
    z-index: 1;
}

.rank-card__name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 24px;
}

.rank-card__price {
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--color-primary);
}

.rank-card__price-sub {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-bottom: 32px;
}

.rank-card__list {
    text-align: left;
    margin-bottom: 40px;
}

.rank-card__list li {
    padding: 12px 0;
    border-bottom: 1px solid var(--color-bg-light);
    position: relative;
    padding-left: 24px;
    font-size: 0.95rem;
}

.rank-card__list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: 900;
}

@media (max-width: 992px) {
    .ranks__grid { grid-template-columns: 1fr; max-width: 500px; margin: 0 auto; gap: 40px; }
    .rank-card--featured { transform: scale(1); }
}

/*--------------------------------------------------------------
  Usage
--------------------------------------------------------------*/
.usage__inner {
    text-align: center;
}

.usage__title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 60px;
}

.usage__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px;
}

.usage-item__title {
    font-size: 1.2rem;
    margin-bottom: 16px;
    position: relative;
    display: inline-block;
}

.usage-item__title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 2px;
    background-color: var(--color-accent);
}

.usage-item__text {
    font-size: 0.95rem;
    opacity: 0.8;
    margin-top: 16px;
}

@media (max-width: 768px) {
    .usage__grid { grid-template-columns: 1fr; gap: 32px; }
}

/*--------------------------------------------------------------
  Target
--------------------------------------------------------------*/
.target__list {
    max-width: 700px;
    margin: 0 auto;
}

.target-item {
    display: flex;
    align-items: center;
    padding: 24px;
    background-color: var(--color-bg-light);
    border-radius: 8px;
    margin-bottom: 16px;
}

.target-item__icon {
    width: 32px;
    height: 32px;
    background-color: var(--color-primary);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    margin-right: 20px;
    flex-shrink: 0;
}

.target-item h4 {
    font-size: 1.1rem;
    font-weight: 700;
}

/*--------------------------------------------------------------
  FAQ
--------------------------------------------------------------*/
.faq__accordion {
    border-top: 1px solid var(--color-border);
}

.faq-item {
    border-bottom: 1px solid var(--color-border);
}

.faq-item__trigger {
    width: 100%;
    padding: 24px 0;
    background: none;
    border: none;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: inherit;
    color: var(--color-primary);
}

.faq-item__trigger::after {
    content: '+';
    font-size: 1.5rem;
    transition: var(--transition);
}

.faq-item.active .faq-item__trigger::after {
    transform: rotate(45deg);
}

.faq-item__content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-item__content {
    max-height: 200px;
    padding-bottom: 24px;
}

/*--------------------------------------------------------------
  Contact
--------------------------------------------------------------*/
.contact__card {
    background-color: var(--color-white);
    padding: 60px 40px;
    border-radius: 16px;
    box-shadow: var(--shadow);
    text-align: center;
}

.contact__title {
    font-size: 1.8rem;
    margin-bottom: 24px;
    color: var(--color-primary);
}

.contact__text {
    margin-bottom: 40px;
    color: var(--color-text-light);
}

.contact__note {
    font-size: 0.85rem;
    margin-top: 16px;
    color: var(--color-text-light);
}

@media (max-width: 768px) {
    .contact__card { padding: 40px 24px; }
    .contact__title { font-size: 1.5rem; }
}

/*--------------------------------------------------------------
  Footer
--------------------------------------------------------------*/
.footer {
    padding: 40px 0;
    border-top: 1px solid var(--color-border);
    font-size: 0.9rem;
}

.footer__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer__links {
    display: flex;
    gap: 24px;
}

.footer__links a:hover {
    text-decoration: underline;
}

@media (max-width: 600px) {
    .footer__inner { flex-direction: column; gap: 16px; text-align: center; }
}