/* ==========================================
   CLASSIS | Base and design tokens
========================================== */

:root {
    --bg: #050505;
    --surface: #111111;
    --surface-subtle: #0a0a0a;
    --white: #f5f5f5;
    --gray: #a8a8a8;
    --gold: #c8a96b;
    --border: #2a2a2a;
    --container-max: 1200px;
    --section-space: clamp(112px, 11vw, 160px);
    --transition: .35s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    overflow-x: hidden;
    background: var(--bg);
    color: var(--white);
    font-family: "Noto Sans JP", sans-serif;
}

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

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

/* Shared horizontal reference for every page region. */
.container {
    width: min(90%, var(--container-max));
    margin-inline: auto;
}

/* Shared section rhythm and title hierarchy. */
.section {
    padding-block: var(--section-space);
}

.section__eyebrow {
    display: block;
    margin-bottom: 20px;
    color: var(--gold);
    font-size: 13px;
    letter-spacing: .24em;
    line-height: 1.2;
}

.about-text h2,
.business-title h2,
.vision-left h2,
.company-left h2,
.message-left h2 {
    margin: 0;
    font-family: "Cormorant Garamond", serif;
    font-size: clamp(36px, 3.8vw, 52px);
    font-weight: 400;
    line-height: 1.15;
    letter-spacing: .02em;
}

/* ==========================================
   Header
========================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 999;
    width: 100%;
    padding-block: 30px;
}

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

.logo img {
    height: 56px;
}

.nav {
    display: flex;
    gap: 40px;
}

.nav a {
    font-size: 13px;
    letter-spacing: .18em;
    transition: color var(--transition);
}

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

.menu-btn {
    display: none;
    z-index: 1001;
    color: var(--white);
    letter-spacing: .15em;
    cursor: pointer;
    transition: color var(--transition);
}

.menu-btn:hover {
    color: var(--gold);
}

.overlay {
    position: fixed;
    z-index: 998;
    inset: 0;
    visibility: hidden;
    background: rgb(0 0 0 / 45%);
    opacity: 0;
    transition: opacity .4s, visibility .4s;
}

.overlay.active {
    visibility: visible;
    opacity: 1;
}

/* ==========================================
   Hero
========================================== */

.hero {
    display: flex;
    align-items: center;
    min-height: 100vh;
    padding-block: 120px;
    background:
        linear-gradient(to right, rgb(5 5 5 / 85%) 35%, rgb(5 5 5 / 55%) 65%, rgb(5 5 5 / 20%)),
        url("../img/hero.png") right center / cover;
}

.hero-content {
    max-width: 700px;
}

.hero-subtitle {
    margin-bottom: 24px;
    color: var(--gold);
    font-size: 16px;
    font-weight: 500;
    letter-spacing: .3em;
    opacity: .9;
    text-transform: uppercase;
}

.hero h1 {
    margin-bottom: 30px;
    font-family: "Cormorant Garamond", serif;
    font-size: clamp(70px, 7vw, 92px);
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: .02em;
}

.hero-text {
    max-width: 520px;
    color: var(--gray);
    font-size: 17px;
    font-family: "Noto Sans JP", sans-serif;
    line-height: 2.1;
}

/* ==========================================
   About
========================================== */

.about {
    background: var(--surface-subtle);
}

.about-grid {
    display: grid;
    grid-template-columns: 0.95fr 1.05fr;
    gap: clamp(64px, 8vw, 100px);
    align-items: center;
}

.about-text {
    max-width: 520px;
}

.about-text h2 {
    margin-bottom: 0;
}

.about-text p:first-of-type {
    margin-top: 40px;
}

.about-text p {
    margin-bottom: 28px;
    color: var(--gray);
    font-size: 17px;
    line-height: 2.1;
}

.about-image {
    display: flex;
    align-items: center;
}

.about-image img {
    width: 100%;
    border-radius: 18px;
    box-shadow: 0 30px 60px rgb(0 0 0 / 45%);
    transition: transform .5s ease;
}

.about-image img:hover {
    transform: scale(1.03);
}

/* ==========================================
   Business
========================================== */

.business {
    background: var(--bg);
}

.business-layout {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    gap: clamp(48px, 7vw, 90px);
    align-items: start;
}

.business-content{
    display:flex;
    flex-direction:column;
    gap:80px;
}

.business-group-title{
    margin-bottom:32px;
    color:var(--gold);
    font-size:13px;
    letter-spacing:.24em;
    text-transform:uppercase;
}

.business-grid--two{
    grid-template-columns:repeat(2, minmax(0,1fr));
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}

.business-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 430px;
    padding: 60px 40px;
    border: 1px solid rgb(255 255 255 / 8%);
    border-radius: 24px;
    background: rgb(255 255 255 / 5%);
    text-align: center;
    transition: transform .4s ease, border-color .4s ease, box-shadow .4s ease;
}

.business-card:hover {
    border-color: var(--gold);
    box-shadow: 0 25px 60px rgb(0 0 0 / 35%);
    transform: translateY(-12px);
}

.business-card img {
    width: 180px;
    height: 180px;
    margin: 0 auto 30px;
    border-radius: 14px;
    object-fit: contain;
}

.business-card h3 {
    min-height: 70px;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    line-height: 1.4;
}

.business-card p {
    min-height: 48px;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    text-align: center;
}

.business-link{
    display: block;
    color: inherit;
    text-decoration: none;
}

/* ==========================================
   Vision, Company and message
========================================== */

.vision {
    background: var(--bg);
}

.vision-content,
.company-layout,
.message-layout {
    display: grid;
    grid-template-columns: minmax(260px, .8fr) minmax(0, 1.2fr);
    gap: clamp(64px, 10vw, 140px);
    align-items: start;
}

.vision-left,
.company-left,
.message-left {
    max-width: 420px;
}

.vision-right,
.company-right,
.message-content {
    max-width: 700px;
}

.vision-right {
    padding-top: 4px;
}

.vision-lead {
    margin-bottom: 35px;
    color: var(--white);
    font-size: 30px;
    font-weight: 500;
    line-height: 1.5;
}

.vision-right p:not(.vision-lead) {
    max-width: 520px;
    margin-bottom: 24px;
    color: var(--gray);
    font-size: 18px;
    line-height: 2.2;
}

.company {
    background: #000;
}

.company-row {
    display: grid;
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 30px;
    padding-block: 30px;
    border-bottom: 1px solid rgb(255 255 255 / 8%);
}

.company-row:first-child {
    border-top: 1px solid rgb(255 255 255 / 8%);
}

.company-row .label {
    color: #888;
    font-size: 13px;
    letter-spacing: .2em;
    text-transform: uppercase;
}

.company-row .value {
    color: var(--white);
    font-size: 17px;
    line-height: 2;
}

.bases {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.base-item h3 {
    color: var(--white);
    font-size: 18px;
    font-weight: 500;
    letter-spacing: .12em;
}

.base-item p {
    margin-top: 8px;
    color: #999;
    font-size: 15px;
    letter-spacing: .08em;
}

.message-content h3 {
    margin-bottom: 48px;
    font-family: "Cormorant Garamond", serif;
    font-size: clamp(38px, 4vw, 48px);
    font-weight: 400;
    line-height: 1.4;
}

.message-content p {
    margin-bottom: 60px;
    color: #bbb;
    font-size: 18px;
    line-height: 2;
}
.section--message{
    padding-bottom: 20px;
}

/* ==========================================
   Footer
========================================== */

.footer {
    padding: 55px 24px;
    background: #050505;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 40px;
}

.footer-logo {
    font-family: "Cormorant Garamond", serif;
    font-size: 42px;
    font-weight: 400;
    letter-spacing: .08em;
    color: var(--white);
}

.footer-nav {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.footer-nav a {
    font-size: 13px;
    letter-spacing: .18em;
    color: var(--gray);
    transition: color .3s ease;
}

.footer-nav a:hover {
    color: var(--gold);
}

.footer-bottom {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,.08);
    text-align: center;
    color: #777;
    font-size: 12px;
    letter-spacing: .12em;
}