:root {
    --green: #2bc967;
    --green-bright: #45dc7c;
    --green-dark: #148844;
    --ink: #101722;
    --text: #111827;
    --muted: #5d6862;
    --line: #cfd6d2;
    --soft: #f2f5f3;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    color: var(--text);
    background: #fff;
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
.about-ja { font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, sans-serif; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.about-container { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }

.about-header {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    z-index: 100;
    height: 76px;
    border-bottom: 1px solid rgba(17,24,39,0.08);
    background: rgba(255,255,255,0.94);
    backdrop-filter: blur(14px);
}
.about-header-inner { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; height: 100%; }
.about-logo { justify-self: start; }
.about-logo img { width: auto; height: 36px; }
.about-nav { display: flex; gap: 32px; font-size: 0.875rem; font-weight: 600; }
.about-nav a { position: relative; padding: 10px 0; }
.about-nav a::after {
    content: "";
    position: absolute;
    right: 0;
    bottom: 3px;
    left: 0;
    height: 2px;
    background: var(--green);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 180ms ease;
}
.about-nav a:hover::after { transform: scaleX(1); }
.about-languages { display: flex; justify-self: end; gap: 2px; }
.about-languages a { padding: 8px 7px; color: #7b847f; font-size: 0.75rem; font-weight: 700; }
.about-languages a.active { color: var(--green-dark); }

.about-hero { min-height: 820px; padding: 156px 0 96px; color: #fff; background: var(--ink); }
.about-hero-grid { display: grid; grid-template-columns: minmax(0,1fr) minmax(420px,.9fr); gap: clamp(48px,6vw,88px); align-items: center; }
.about-kicker,
.about-section-label { margin-bottom: 24px; color: var(--green-bright); font-size: 0.75rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.about-hero h1 { max-width: 680px; margin-bottom: 28px; font-size: clamp(3rem,4.6vw,5rem); font-weight: 800; line-height: 1.08; letter-spacing: -.045em; }
.about-ja .about-hero h1 { line-height: 1.2; letter-spacing: -.035em; }
.about-hero h1 span { color: var(--green-bright); }
.about-lead { max-width: 590px; margin-bottom: 34px; color: rgba(248,250,252,.72); font-size: 1.08rem; line-height: 1.8; }
.about-primary-link { display: inline-flex; align-items: center; gap: 22px; padding-bottom: 8px; border-bottom: 1px solid rgba(255,255,255,.56); font-size: .9rem; font-weight: 700; }
.about-proof { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; max-width: 560px; margin-top: 52px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.18); }
.about-proof dt { font-size: 1.3rem; font-weight: 700; line-height: 1.2; }
.about-proof dd { margin-top: 4px; color: rgba(248,250,252,.55); font-size: .77rem; }

.about-product {
    position: relative;
    height: 560px;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 10px;
    background: linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px),#182231;
    background-size: 64px 64px;
}
.about-product-label { position: absolute; top: 34px; left: 34px; z-index: 2; display: flex; flex-direction: column; gap: 10px; }
.about-product-label span { color: var(--green-bright); font-size: .7rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.about-product-label strong { color: rgba(248,250,252,.9); font-size: 1.3rem; line-height: 1.3; }
.about-phone { position: absolute; width: 228px; height: auto; filter: drop-shadow(0 18px 24px rgba(0,0,0,.28)); }
.about-phone-one { bottom: -184px; left: 58px; transform: rotate(-3deg); }
.about-phone-two { right: 42px; bottom: -238px; transform: rotate(3deg); }

.about-story { padding: clamp(88px,10vw,136px) 0; background: var(--soft); }
.about-story-grid { display: grid; grid-template-columns: minmax(0,1fr) minmax(360px,.86fr); gap: clamp(56px,8vw,112px); align-items: center; }
.about-story figure { margin: 0; }
.about-story figure img { width: 100%; height: 620px; object-fit: cover; border-radius: 10px; }
.about-story .about-section-label { margin-bottom: 18px; color: var(--green-dark); }
.about-story h2,
.about-section-heading h2,
.about-contact h2 { font-size: clamp(2.45rem,4vw,4rem); line-height: 1.17; letter-spacing: -.04em; }
.about-story h2 { margin-bottom: 24px; }
.about-story-lead { margin-bottom: 44px; color: var(--muted); font-size: 1.02rem; line-height: 1.85; }
.about-principles { border-top: 1px solid var(--line); }
.about-principles > div { display: grid; grid-template-columns: 100px 1fr; gap: 20px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.about-principles strong { color: var(--green-dark); font-size: .82rem; }
.about-principles p { color: #374151; }

.about-services { padding: clamp(88px,10vw,136px) 0; }
.about-section-heading { display: grid; grid-template-columns: 1fr minmax(280px,.55fr); gap: 48px; align-items: end; margin-bottom: 64px; }
.about-section-heading > p { color: var(--muted); font-size: 1.02rem; line-height: 1.8; }
.about-service-list { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); column-gap: 64px; border-top: 1px solid var(--line); }
.about-service-list article { display: grid; grid-template-columns: 42px 1fr; gap: 20px; min-height: 210px; padding: 34px 0; border-bottom: 1px solid var(--line); }
.about-service-list article > span { color: #87938d; font-size: .78rem; font-weight: 600; }
.about-service-list small { color: var(--green-dark); font-size: .7rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.about-service-list h3 { margin: 7px 0 10px; font-size: 1.7rem; line-height: 1.25; letter-spacing: -.025em; }
.about-service-list p { max-width: 410px; color: var(--muted); line-height: 1.75; }

.about-contact { padding: clamp(80px,9vw,120px) 0; color: #07150c; background: var(--green); }
.about-contact-inner { display: grid; grid-template-columns: 1fr auto; gap: 48px; align-items: end; }
.about-contact-inner > div > p { margin-bottom: 16px; font-size: .75rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.about-contact a { display: inline-flex; gap: 24px; align-items: center; padding-bottom: 10px; border-bottom: 2px solid #07150c; font-weight: 700; }
.about-footer { padding: 32px 0; color: rgba(255,255,255,.58); background: var(--ink); font-size: .78rem; }
.about-footer .about-container { display: flex; justify-content: space-between; gap: 32px; }
.about-footer strong { color: rgba(255,255,255,.82); }

a:focus-visible { outline: 3px solid var(--green-bright); outline-offset: 4px; }

@media (max-width: 1024px) {
    .about-hero-grid,
    .about-story-grid { grid-template-columns: 1fr; }
    .about-hero { padding-top: 140px; }
    .about-product { max-width: 760px; width: 100%; }
    .about-story figure img { height: 480px; }
}

@media (max-width: 760px) {
    .about-container { width: min(100% - 32px, 1180px); }
    .about-header-inner { grid-template-columns: 1fr auto; }
    .about-logo img { height: 32px; }
    .about-nav { display: none; }
    .about-hero { min-height: 0; padding: 120px 0 64px; }
    .about-hero-grid { gap: 48px; }
    .about-hero h1 { font-size: clamp(2.3rem,11vw,3.2rem); }
    .about-proof { margin-top: 40px; }
    .about-proof dt { font-size: 1.05rem; }
    .about-product { height: 460px; }
    .about-phone { width: 190px; }
    .about-phone-one { bottom: -162px; left: 28px; }
    .about-phone-two { right: 22px; bottom: -205px; }
    .about-product-label { top: 26px; left: 24px; }
    .about-story figure img { height: 390px; }
    .about-story h2,
    .about-section-heading h2,
    .about-contact h2 { font-size: 2.2rem; }
    .about-principles > div { grid-template-columns: 1fr; gap: 8px; }
    .about-section-heading { grid-template-columns: 1fr; gap: 24px; }
    .about-service-list { grid-template-columns: 1fr; }
    .about-service-list article { min-height: 0; grid-template-columns: 32px 1fr; gap: 14px; padding: 28px 0; }
    .about-contact-inner { grid-template-columns: 1fr; align-items: start; }
    .about-contact a { justify-content: space-between; width: 100%; }
    .about-footer .about-container { flex-direction: column; gap: 8px; }
}

@media (max-width: 420px) {
    .about-phone { width: 170px; }
    .about-phone-one { left: 10px; }
    .about-phone-two { right: 4px; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .about-nav a::after { transition: none; }
}