/* =========================================================
   AP2 FRACTION, Inc. - Website Stylesheet
   ========================================================= */

:root {
    /* Colors */
    --color-bg: #F4F1EA;
    --color-bg-alt: #EDE8DD;
    --color-ink: #0F0F0E;
    --color-ink-soft: #3A3A37;
    --color-ink-mute: #7A7A75;
    --color-line: #C8C2B4;
    --color-accent: #1F3A2E;   /* Deep botanical green */
    --color-gold:   #A08256;   /* Muted brass */
    --color-white:  #FFFFFF;

    /* Typography */
    --font-display: 'Cormorant Garamond', 'Noto Serif JP', serif;
    --font-body:    'Cormorant Garamond', 'Noto Serif JP', serif;
    --font-num:     'Cormorant Garamond', 'Noto Serif JP', serif;

    /* Letter-spacing tokens (logo-aligned: +100 = 0.1em base) */
    --ls-base:    0.1em;
    --ls-body:    0.08em;
    --ls-heading: 0.12em;
    --ls-button:  0.15em;

    /* Spacing */
    --gutter: clamp(1.25rem, 4vw, 3rem);
    --section-py: clamp(5rem, 10vw, 9rem);

    /* Motion — from ui-mechanics.md (Alan Dye body-physics) */
    --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in: cubic-bezier(0.55, 0, 1, 0.45);
    --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
    --ease-snap: cubic-bezier(0.2, 0, 0, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

    --duration-instant: 80ms;
    --duration-fast: 150ms;
    --duration-normal: 250ms;
    --duration-slow: 400ms;
    --duration-gentle: 600ms;

    /* Border tokens — Karri Saarinen 0.5px system */
    --border-default: 0.5px solid rgba(15, 15, 14, 0.10);
    --border-subtle: 0.5px solid rgba(15, 15, 14, 0.05);
    --border-emphasis: 0.5px solid rgba(15, 15, 14, 0.18);
}

/* ---------- Opening skip button ---------- */
.skip-button {
    position: fixed;
    top: 24px;
    right: 32px;
    z-index: 10000;
    font-family: 'Cormorant Garamond', 'Noto Serif JP', serif;
    font-weight: 300;
    font-size: 13px;
    letter-spacing: var(--ls-button);
    color: #fff;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.6);
    padding: 10px 24px;
    cursor: pointer;
    transition: opacity 0.3s ease, background 0.3s ease, border-color 0.3s ease, letter-spacing 0.3s ease;
    opacity: 0;
    animation: fadeInSkip 0.8s ease 1.5s forwards;
}
@keyframes fadeInSkip {
    to { opacity: 0.7; }
}
.skip-button:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
    letter-spacing: var(--ls-button);
}
.skip-button:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 2px;
    opacity: 1;
}
body.opening-finished .skip-button {
    display: none;
}
@media (max-width: 768px) {
    .skip-button {
        top: 16px;
        right: 16px;
        font-size: 11px;
        padding: 8px 18px;
        letter-spacing: var(--ls-button);
    }
    .skip-button:hover {
        letter-spacing: var(--ls-button);
    }
}

/* ---------- Section-level animation containers ---------- */
.section-animation {
    display: block;
    width: 100%;
    max-width: 520px;
    margin: clamp(2rem, 4vw, 3rem) auto;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    position: relative;
}
.section-animation--white {
    background: #FFFFFF;
}
.section-animation--beige {
    background: #F4F1EA;
}

/* Lattice sits to the right of subtitle text on desktop */
.careers__subtitle-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(2rem, 4vw, 3rem);
    align-items: center;
    margin-top: clamp(1.5rem, 3vw, 2rem);
}
.careers__subtitle-wrap .careers__subtitle {
    margin: 0;
}
.careers__subtitle-wrap #careers-lattice {
    max-width: 100%;
    margin: 0;
    aspect-ratio: 1 / 1;
}
@media (max-width: 768px) {
    .careers__subtitle-wrap {
        grid-template-columns: 1fr;
    }
    .careers__subtitle-wrap #careers-lattice {
        aspect-ratio: 16 / 9;
        max-width: 520px;
        margin: 1rem auto 0;
    }
}
@media (prefers-reduced-motion: reduce) {
    .section-animation {
        display: none !important;
    }
}

/* ---------- Ruby (phonetic annotation) ---------- */
ruby {
    ruby-position: over;
}
ruby rt {
    font-size: 0.5em;
    font-family: var(--font-body);
    font-style: normal;
    font-weight: 400;
    letter-spacing: var(--ls-body);
    color: inherit;
    opacity: 0.7;
}

/* ---------- Reset ---------- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
body {
    font-family: var(--font-body);
    font-weight: 300;
    font-size: 1rem;
    line-height: 1.8;
    letter-spacing: var(--ls-body);
    color: var(--color-ink);
    background: var(--color-bg);
    overflow-x: hidden;
    font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
    font-variant-numeric: tabular-nums;
    -webkit-text-size-adjust: 100%;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { background: none; border: 0; cursor: pointer; font: inherit; color: inherit; }

/* ---------- Typography unification (Cormorant Garamond base) ---------- */
body, input, textarea, select, button {
    font-family: 'Cormorant Garamond', 'Noto Serif JP', serif;
}
h1, h2, h3, h4, h5, h6 {
    font-weight: 400;
    letter-spacing: var(--ls-heading);
}
nav, .btn, button {
    font-weight: 400;
    letter-spacing: var(--ls-button);
}

/* Subtle background grain */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.05 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
    mix-blend-mode: multiply;
    opacity: 0.7;
}

/* ---------- Preloader ---------- */
.preloader {
    position: fixed;
    inset: 0;
    background: var(--color-ink);
    z-index: 9999;
    display: grid;
    place-items: center;
    transition: opacity 0.3s var(--ease), visibility 0.3s var(--ease);
}
.preloader.is-hidden {
    opacity: 0;
    visibility: hidden;
}
.preloader__inner {
    text-align: center;
    color: var(--color-bg);
}
.preloader__logo {
    width: 120px;
    height: auto;
    margin: 0 auto 2rem;
    display: block;
    filter: invert(1) brightness(1.1);
    opacity: 0;
    animation: preloaderLogoFade 1.2s var(--ease) 0.2s forwards;
}
@keyframes preloaderLogoFade {
    to { opacity: 1; }
}
.preloader__bar {
    width: 200px;
    height: 1px;
    background: rgba(244, 241, 234, 0.2);
    overflow: hidden;
    margin: 0 auto;
}
.preloader__bar span {
    display: block;
    height: 100%;
    background: var(--color-bg);
    width: 0;
    animation: loadBar 1.4s var(--ease) forwards;
}
@keyframes loadBar {
    to { width: 100%; }
}

/* ---------- Header ---------- */
.header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    padding: 1.5rem var(--gutter) 1.5rem var(--gutter);
    transition: background var(--duration-slow) var(--ease-out), padding var(--duration-slow) var(--ease-out);
}
.header.is-scrolled {
    background: rgba(244, 241, 234, 0.85);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    padding: 1rem var(--gutter);
    border-bottom: var(--border-default);
}
@media (max-width: 900px) {
    .header {
        padding-right: 0.8rem;
    }
    .header.is-scrolled {
        padding-right: 0.8rem;
    }
}
.header__inner {
    max-width: 1600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.9rem;
    position: relative;
}
.header.is-scrolled .header__inner {
    gap: 0.6rem;
}
.header__logo {
    display: flex;
    align-items: center;
    transition: opacity 0.3s var(--ease);
}
.header__logo:hover { opacity: 0.65; }
.header__logo-img {
    height: 32px;
    width: auto;
    display: block;
    transition: height 0.3s var(--ease);
}
.header.is-scrolled .header__logo-img {
    height: 26px;
}
@media (max-width: 900px) {
    .header__logo-img { height: 26px; }
    .header.is-scrolled .header__logo-img { height: 22px; }
}

/* Navigation */
.nav__list {
    display: flex;
    gap: 2.5rem;
}
.nav__link {
    display: inline-flex;
    align-items: baseline;
    gap: 0.4rem;
    font-size: 0.8rem;
    font-weight: 400;
    letter-spacing: var(--ls-button);
    position: relative;
    padding: 0.25rem 0;
    transition: color 0.3s var(--ease);
}
.nav__link::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-ink);
    transition: width 0.4s var(--ease);
}
.nav__link:hover::after { width: 100%; }
.nav__num {
    font-family: var(--font-display);
    font-style: normal;
    color: var(--color-ink-mute);
    font-size: 0.75rem;
}

.menu-toggle {
    display: none;
    width: 40px;
    height: 40px;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 6px;
}
.menu-toggle span {
    display: block;
    width: 24px;
    height: 1px;
    background: var(--color-ink);
    transition: transform 0.3s var(--ease);
}
.menu-toggle.is-open span:first-child { transform: translateY(3.5px) rotate(45deg); }
.menu-toggle.is-open span:last-child { transform: translateY(-3.5px) rotate(-45deg); }

/* Header color: transparent (on opening) vs scrolled */
.header:not(.is-scrolled) .nav__link,
.header:not(.is-scrolled) .nav__num {
    color: rgba(244, 241, 234, 0.9);
}
.header:not(.is-scrolled) .header__logo-img {
    filter: invert(1);
}
.header:not(.is-scrolled) .menu-toggle span {
    background: rgba(244, 241, 234, 0.9);
}
.header.is-scrolled .nav__link {
    color: var(--color-ink);
}
.header.is-scrolled .header__logo-img {
    filter: none;
}

/* ---------- Opening (editorial 2-column) ---------- */
.opening {
    min-height: 100vh;
    min-height: 100svh;
    background: var(--color-ink);
    color: var(--color-bg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    position: relative;
    overflow: hidden;
}

/* --- Full-screen intro animation (fades out after ~8s) --- */
.opening__intro {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    z-index: 9999;
    background: #0F0F0E;
    overflow: hidden;
    margin: 0;
    padding: 0;
    opacity: 1;
    visibility: visible;
    transition: opacity 1.5s ease-out, visibility 1.5s ease-out;
}
.opening__intro.is-hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

/* Site body cross-fades in as intro fades out.
   Target only sections AFTER the opening (and the footer),
   so the opening section stays fully visible under the intro
   and reveals naturally as the intro fades out. */
.section,
.footer {
    opacity: 0;
    transition: opacity 1.5s ease-in 0.3s;
}
body.is-intro-hidden .section,
body.is-intro-hidden .footer {
    opacity: 1;
}
.opening__intro-iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100% !important;
    height: 100% !important;
    border: none;
    display: block;
    margin: 0;
    padding: 0;
    background: transparent;
}
@media (prefers-reduced-motion: reduce) {
    .opening__intro {
        display: none !important;
    }
}
/* Mobile: force-show iframe even under power-saver/reduced-motion,
   which many phones auto-enable and would otherwise hide the intro. */
@media (max-width: 768px) {
    .opening__intro {
        display: block !important;
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        height: 100dvh;
        z-index: 9999;
        background: var(--color-ink);
        transition: opacity 1.5s ease-out, visibility 1.5s ease-out !important;
    }
    .opening__intro.is-hidden {
        opacity: 0 !important;
        visibility: hidden !important;
        pointer-events: none !important;
    }
    .opening__intro-iframe,
    .opening__intro iframe {
        display: block !important;
        width: 100vw !important;
        height: 100vh !important;
        height: 100dvh !important;
        min-height: 100vh !important;
        border: none !important;
    }
}

/* Left: text column */
.opening__text {
    padding: clamp(3rem, 6vw, 6rem);
    display: flex;
    flex-direction: column;
    gap: clamp(2rem, 4vh, 3.5rem);
    z-index: 2;
    opacity: 0;
    animation: fadeUp 1.2s var(--ease-out) 0.3s forwards;
}

/* Caption (EST / TOKYO) */
.opening__caption {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5em;
    font-family: var(--font-body);
    font-size: clamp(0.7rem, 1vw, 0.85rem);
    letter-spacing: var(--ls-base);
    color: rgba(244, 241, 234, 0.5);
    position: relative;
}
.opening__caption::before {
    content: '';
    display: block;
    width: 40px;
    height: 1px;
    background: rgba(244, 241, 234, 0.3);
    margin-bottom: 0.5rem;
}

/* Tagline (main headline) */
.opening__tagline {
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 3.5vw, 2.8rem);
    line-height: 1.6;
    color: var(--color-bg);
    font-weight: 400;
    letter-spacing: var(--ls-heading);
    margin: 0;
}
.opening__tagline ruby {
    ruby-position: over;
}
.opening__tagline rt {
    font-size: 0.4em;
    color: rgba(244, 241, 234, 0.5);
    letter-spacing: var(--ls-base);
}

/* Right: image column */
.opening__visual {
    height: 100vh;
    overflow: hidden;
    position: relative;
}
.opening__visual-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}

/* Mobile: top = image 45vh, bottom = text */
@media (max-width: 900px) {
    .opening {
        grid-template-columns: 1fr;
        grid-template-rows: 45vh 1fr;
        min-height: 100vh;
    }
    .opening__visual {
        height: 100%;
        order: -1;
    }
    .opening__visual-img {
        object-position: center 70%;
    }
    .opening__text {
        padding: clamp(2rem, 5vw, 3rem);
        gap: clamp(1.5rem, 3vh, 2.5rem);
        justify-content: center;
    }
    .opening__tagline {
        font-size: clamp(1.4rem, 5.5vw, 2rem);
    }
}

/* ---------- Hero (legacy - kept for safety) ---------- */
.hero {
    position: relative;
    min-height: 100vh;
    min-height: 100svh;
    display: flex;
    align-items: flex-end;
    padding: 7rem var(--gutter) 4rem;
    overflow: hidden;
}
.hero__bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}
.hero__bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.35;
    animation: heroZoom 14s var(--ease) forwards;
}
@keyframes heroZoom {
    from { transform: scale(1.08); }
    to { transform: scale(1); }
}
.hero__bg-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(244,241,234,0.4) 0%, rgba(244,241,234,0.9) 80%, var(--color-bg) 100%);
}

.hero__grid {
    position: absolute;
    inset: 0;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    pointer-events: none;
    z-index: 1;
}
.hero__grid span {
    border-right: 1px solid rgba(15,15,14,0.05);
}
.hero__grid span:last-child { border-right: 0; }

.hero__inner {
    position: relative;
    z-index: 2;
    max-width: 1600px;
    margin: 0 auto;
    width: 100%;
}

.hero__meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: clamp(2rem, 5vw, 4rem);
    font-size: 0.72rem;
    letter-spacing: var(--ls-base);
    color: var(--color-ink-soft);
    opacity: 0;
    animation: fadeUp 1s var(--ease) 0.6s forwards;
}
.hero__meta-line {
    display: block;
    width: 48px;
    height: 1px;
    background: var(--color-ink);
}

.hero__title {
    font-family: var(--font-display);
    font-weight: 400;
    font-size: clamp(3.5rem, 11vw, 11rem);
    line-height: 0.95;
    letter-spacing: var(--ls-heading);
    color: var(--color-ink);
    margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}
.hero__title-row {
    display: block;
    opacity: 0;
    transform: translateY(80px);
    animation: titleReveal 1.2s var(--ease) forwards;
}
.hero__title-row:nth-child(1) { animation-delay: 0.8s; }
.hero__title-row:nth-child(2) {
    animation-delay: 1.0s;
    padding-left: clamp(2rem, 8vw, 7rem);
    color: var(--color-ink-soft);
}
.hero__title-row:nth-child(3) { animation-delay: 1.2s; }
.hero__title em {
    font-style: normal;
    color: var(--color-accent);
}
@keyframes titleReveal {
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeUp {
    to { opacity: 1; }
}

.hero__lead {
    font-size: clamp(0.95rem, 1.4vw, 1.1rem);
    line-height: 1.9;
    color: var(--color-ink-soft);
    max-width: 32em;
    margin-left: auto;
    opacity: 0;
    animation: fadeUp 1s var(--ease) 1.6s forwards;
}

.hero__scroll {
    position: absolute;
    left: var(--gutter);
    bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    opacity: 0;
    animation: fadeUp 1s var(--ease) 2s forwards;
}
.hero__scroll-text {
    font-size: 0.7rem;
    letter-spacing: var(--ls-base);
    font-weight: 500;
}
.hero__scroll-line {
    display: block;
    width: 60px;
    height: 1px;
    background: var(--color-ink);
    position: relative;
    overflow: hidden;
}
.hero__scroll-line::after {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--color-bg);
    animation: scrollLine 2s var(--ease) infinite;
}
@keyframes scrollLine {
    to { left: 100%; }
}

.hero__counter {
    position: absolute;
    right: var(--gutter);
    bottom: 2rem;
    font-family: var(--font-display);
    font-style: normal;
    font-size: 0.9rem;
    color: var(--color-ink-soft);
    letter-spacing: var(--ls-base);
    opacity: 0;
    animation: fadeUp 1s var(--ease) 2.2s forwards;
}
.hero__counter-num {
    font-size: 1.5rem;
    color: var(--color-ink);
}

/* ---------- Sections (shared) ---------- */
.section {
    position: relative;
    z-index: 2;
    padding: var(--section-py) var(--gutter);
    max-width: 1600px;
    margin: 0 auto;
}
.section__head {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: clamp(3rem, 6vw, 5rem);
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--color-line);
}
.section__num {
    font-family: var(--font-display);
    font-style: normal;
    font-size: 1.2rem;
    color: var(--color-ink-mute);
}
.section__label {
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: var(--ls-base);
    text-transform: uppercase;
}
.section__title {
    font-family: var(--font-display);
    font-weight: 400;
    font-size: clamp(2.5rem, 7vw, 6rem);
    line-height: 1;
    letter-spacing: var(--ls-heading);
    margin-bottom: 2rem;
}
.section__title span { display: block; }
.section__title em {
    font-style: normal;
    color: var(--color-accent);
}
.section__title span:nth-child(2) { padding-left: clamp(1rem, 4vw, 3rem); }

/* ---------- Concept (新設) ---------- */
.concept__inner {
    max-width: 1200px;
    margin: 0 auto;
}
.concept__headline {
    font-family: var(--font-display);
    font-weight: 400;
    font-size: clamp(2.5rem, 6vw, 5rem);
    line-height: 1.18;
    letter-spacing: var(--ls-heading);
    margin-bottom: clamp(3rem, 6vw, 5rem);
}
.concept__headline span { display: block; }
.concept__headline span:nth-child(2) {
    padding-left: clamp(1rem, 4vw, 3rem);
}
.concept__headline em {
    font-style: normal;
    color: var(--color-accent);
}

.concept__body {
    max-width: 780px;
    margin: 0 auto;
}

.concept__block {
    padding: clamp(2rem, 4vw, 3rem) 0;
}

.concept__label {
    display: flex;
    align-items: baseline;
    gap: 1.25rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    padding-bottom: 0.75rem;
    border-bottom: var(--border-subtle);
}
.concept__label-en {
    font-family: var(--font-display);
    font-style: normal;
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--color-accent);
    line-height: 1;
    letter-spacing: var(--ls-base);
}
.concept__label-ja {
    font-family: var(--font-display);
    font-style: normal;
    font-size: 1rem;
    letter-spacing: var(--ls-base);
    color: var(--color-ink-soft);
    font-weight: 400;
    white-space: nowrap;
}

.concept__text {
    font-size: clamp(1rem, 1.4vw, 1.15rem);
    line-height: 2;
    color: var(--color-ink-soft);
    padding-left: clamp(0.5rem, 1.5vw, 1rem);
}

.concept__divider {
    height: 1px;
    background: linear-gradient(90deg,
        transparent 0%,
        var(--color-line) 20%,
        var(--color-line) 80%,
        transparent 100%);
    margin: 0 auto;
    max-width: 300px;
}

.concept__closing {
    margin-top: clamp(3rem, 5vw, 4rem);
    padding-top: clamp(2rem, 4vw, 3rem);
    border-top: 1px solid var(--color-line);
    text-align: center;
}
.concept__closing-image {
    margin: 0 auto clamp(2rem, 4vw, 3rem) !important;
    overflow: hidden;
    aspect-ratio: 16 / 9;
    background: var(--color-bg-alt);
    max-width: 360px !important;
    width: 100% !important;
    display: block !important;
}
.concept__closing-image-img {
    width: 100% !important;
    height: 100% !important;
    object-fit: cover;
    object-position: center;
    display: block;
    transition: transform 2s var(--ease);
}
.concept__closing-image:hover .concept__closing-image-img {
    transform: scale(1.02);
}
.concept__closing-mark {
    display: block;
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--color-gold);
    margin-bottom: 1rem;
    line-height: 1;
}
.concept__closing-text {
    font-family: var(--font-display);
    font-size: clamp(1.15rem, 2vw, 1.55rem);
    line-height: 2.1;
    letter-spacing: var(--ls-body);
    color: var(--color-ink);
    font-weight: 400;
    max-width: 26em;
    margin-left: auto;
    margin-right: auto;
}
.concept__closing-text + .concept__closing-text {
    margin-top: 1.75em;
    font-size: clamp(1rem, 1.6vw, 1.25rem);
    color: var(--color-ink-soft);
    font-style: normal;
}
.concept__closing-text em {
    font-style: normal;
    color: var(--color-accent);
}
.concept__closing-logo {
    display: inline-block;
    height: 3em;
    width: auto;
    vertical-align: -1em;
    margin: 0 0.35em 0 0.2em;
}
@media (max-width: 600px) {
    .concept__closing-logo {
        height: 2.7em;
        vertical-align: -0.9em;
    }
}

/* ---------- About ---------- */
.about__inner {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: clamp(2rem, 6vw, 6rem);
    align-items: start;
}
.about__text {
    font-size: 1rem;
    line-height: 2;
    margin-bottom: 1.5rem;
    color: var(--color-ink-soft);
}
.about__text:first-child::first-letter {
    font-family: var(--font-display);
    font-size: 3em;
    font-style: normal;
    float: left;
    line-height: 0.9;
    margin: 0.1em 0.15em 0 0;
    color: var(--color-accent);
}

.about__stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-top: 3rem;
    padding-top: 2.5rem;
    border-top: 1px solid var(--color-line);
}
.about__stat-num {
    display: block;
    font-family: var(--font-display);
    font-style: normal;
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    line-height: 1;
    color: var(--color-accent);
    margin-bottom: 0.5rem;
}
.about__stat-label {
    font-size: 0.72rem;
    letter-spacing: var(--ls-base);
    text-transform: uppercase;
    color: var(--color-ink-mute);
}

/* ---------- Philosophy ---------- */
.philosophy {
    background: var(--color-bg-alt);
    max-width: none;
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
    padding-left: calc(50vw - 50%);
    padding-right: calc(50vw - 50%);
}
.philosophy__inner {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 var(--gutter);
}
.philosophy__headline {
    font-family: var(--font-display);
    font-weight: 400;
    font-size: clamp(1.8rem, 4.5vw, 3.5rem);
    line-height: 1.3;
    letter-spacing: var(--ls-heading);
    margin-bottom: clamp(3rem, 6vw, 5rem);
    max-width: 22em;
}
.philosophy__headline em {
    font-style: normal;
    color: var(--color-accent);
}
.philosophy__list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--color-line);
    border-top: 1px solid var(--color-line);
    border-bottom: 1px solid var(--color-line);
}
.philo-card {
    background: var(--color-bg-alt);
    padding: 2.5rem 1.75rem;
    transition: background 0.4s var(--ease);
}
.philo-card:hover {
    background: var(--color-bg);
}
.philo-card__head {
    margin-bottom: 2rem;
}
.philo-card__num {
    display: block;
    font-family: var(--font-display);
    font-style: normal;
    font-size: clamp(1.15rem, 1.8vw, 1.4rem);
    color: var(--color-gold);
    letter-spacing: var(--ls-base);
    margin-bottom: 0.75rem;
}
.philo-card__title {
    font-family: var(--font-display);
    font-weight: 400;
    font-size: clamp(1.75rem, 3vw, 2.4rem);
    line-height: 1;
    color: var(--color-ink);
}
.philo-card__body {
    font-size: 0.92rem;
    line-height: 1.9;
    color: var(--color-ink-soft);
}

/* ---------- Business ---------- */
.business__title-wrap { margin-bottom: clamp(3rem, 6vw, 5rem); }
.business__subtitle {
    max-width: 30em;
    color: var(--color-ink-soft);
    margin-top: 1rem;
    line-height: 1.9;
}

.business__list {
    display: flex;
    flex-direction: column;
    gap: clamp(3rem, 6vw, 5rem);
}
.biz-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(2rem, 5vw, 4.5rem);
    align-items: center;
    padding: clamp(1.5rem, 3vw, 2.5rem) 0;
    border-top: 1px solid var(--color-line);
}
.biz-item--reverse .biz-item__visual { order: 2; }
.biz-item__visual {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: var(--color-bg-alt);
    position: relative;
}
.biz-item__visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s var(--ease);
}
.biz-item:hover .biz-item__visual img {
    transform: scale(1.04);
}
/* Logo variant: contained with breathing room */
.biz-item__visual--logo {
    background: var(--color-bg-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(2rem, 5vw, 3.5rem);
}
.biz-item__visual--logo img {
    width: 60%;
    max-width: 220px;
    height: auto;
    object-fit: contain;
    display: block;
    margin: 0 auto;
}
.biz-item:hover .biz-item__visual--logo img {
    transform: scale(1.03);
}
.biz-item__num {
    display: block;
    font-family: var(--font-display);
    font-style: normal;
    font-size: 0.9rem;
    color: var(--color-gold);
    margin-bottom: 1rem;
}
.biz-item__title {
    font-family: var(--font-display);
    font-weight: 400;
    font-size: clamp(1.75rem, 3.5vw, 2.75rem);
    line-height: 1.1;
    margin-bottom: 1.25rem;
    letter-spacing: var(--ls-heading);
}
.biz-item__desc {
    font-size: 1rem;
    line-height: 1.9;
    color: var(--color-ink-soft);
    max-width: 28em;
}
.biz-item__desc-en {
    font-family: var(--font-display);
    font-size: clamp(0.95rem, 1.4vw, 1.1rem);
    line-height: 1.6;
    color: var(--color-ink-mute);
    max-width: 32em;
    margin-top: 1rem;
    letter-spacing: var(--ls-body);
}
.biz-item__desc-en em {
    font-style: normal;
}
.biz-item__r {
    font-family: var(--font-display);
    font-size: 0.55em;
    vertical-align: super;
    color: var(--color-gold);
    margin-left: 0.1em;
    letter-spacing: var(--ls-base);
}

/* ---------- Intellectual Property (新設) ---------- */
.ip {
    background: var(--color-bg-alt);
    max-width: none;
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
    padding-left: calc(50vw - 50%);
    padding-right: calc(50vw - 50%);
}
.ip__inner {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 var(--gutter);
}
.ip__title-wrap {
    margin-bottom: clamp(3rem, 6vw, 5rem);
}
.ip__subtitle {
    max-width: 30em;
    color: var(--color-ink-soft);
    margin-top: 1.5rem;
    line-height: 1.9;
    font-size: 0.95rem;
}

.ip__list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.ip-card {
    background: var(--color-bg);
    padding: 2.5rem 2rem;
    border: 1px solid var(--color-line);
    position: relative;
    transition: transform 0.5s var(--ease), border-color 0.5s var(--ease);
    display: flex;
    flex-direction: column;
}
.ip-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent);
}
.ip-card--patent {
    border-style: dashed;
    border-color: var(--color-gold);
    background: linear-gradient(
        135deg,
        var(--color-bg) 0%,
        rgba(160, 130, 86, 0.05) 100%
    );
}
.ip-card__head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
}
.ip-card__logo-wrap {
    margin-bottom: 1.5rem;
    padding: 1.5rem 0;
    text-align: center;
    border-bottom: 1px solid var(--color-line);
}
.ip-card__logo {
    max-height: 80px;
    max-width: 70%;
    width: auto;
    height: auto;
    display: block;
    margin: 0 auto;
}
@media (max-width: 600px) {
    .ip-card__logo {
        max-height: 60px;
    }
}
.ip-card__label {
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: var(--ls-base);
    text-transform: uppercase;
    color: var(--color-ink-mute);
}
.ip-card__mark {
    font-family: var(--font-display);
    font-size: 1.5rem;
    line-height: 1;
    color: var(--color-gold);
}
.ip-card__title {
    font-family: var(--font-display);
    font-weight: 400;
    font-size: clamp(1.6rem, 2.4vw, 2rem);
    line-height: 1.1;
    margin-bottom: 1.25rem;
    letter-spacing: var(--ls-heading);
    color: var(--color-ink);
}
.ip-card__r {
    font-size: 0.5em;
    vertical-align: super;
    color: var(--color-gold);
    margin-left: 0.15em;
    font-style: normal;
}
.ip-card__desc {
    font-size: 0.92rem;
    line-height: 1.85;
    color: var(--color-ink-soft);
    flex-grow: 1;
    margin-bottom: 1.5rem;
}
.ip-card__status {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    letter-spacing: var(--ls-base);
    color: var(--color-accent);
    padding-top: 1rem;
    border-top: 1px solid var(--color-line);
}
.ip-card__dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
    animation: ipDotPulse 2.5s var(--ease) infinite;
}
.ip-card__status--pending {
    color: var(--color-gold);
}
.ip-card__status--pending .ip-card__dot {
    background: var(--color-gold);
}
@keyframes ipDotPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(1.4); }
}

.ip__note {
    margin-top: 2rem;
    font-size: 0.78rem;
    color: var(--color-ink-mute);
    letter-spacing: var(--ls-body);
    text-align: right;
}

/* ---------- Careers ---------- */
.careers__inner {
    max-width: 1200px;
    margin: 0 auto;
}
.careers__title-wrap {
    margin-bottom: clamp(3rem, 6vw, 5rem);
}
.careers__subtitle {
    max-width: 36em;
    color: var(--color-ink-soft);
    margin-top: 1.5rem;
    line-height: 2;
    font-size: 0.95rem;
}

.careers__message {
    padding: clamp(2.5rem, 5vw, 4rem) 0;
    margin-bottom: clamp(3rem, 5vw, 4rem);
    text-align: center;
}
.careers__message-mark {
    display: block;
    font-family: var(--font-display);
    font-size: 1.8rem;
    color: var(--color-gold);
    margin-bottom: 1rem;
    line-height: 1;
}
.careers__message-text {
    font-family: var(--font-display);
    font-size: clamp(1.15rem, 2vw, 1.55rem);
    line-height: 1.9;
    color: var(--color-ink);
    font-weight: 400;
}
.careers__message-text em {
    font-style: normal;
    color: var(--color-accent);
}

.careers__roles {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: var(--color-line);
    border-top: 1px solid var(--color-line);
    margin-bottom: clamp(3rem, 6vw, 5rem);
}
.role-card {
    background: var(--color-bg);
    padding: 2.5rem 2rem;
    transition: background 0.4s var(--ease);
}
.role-card:hover {
    background: var(--color-bg-alt);
}
.role-card__num {
    display: block;
    font-family: var(--font-display);
    font-style: normal;
    font-size: 0.9rem;
    color: var(--color-gold);
    margin-bottom: 1rem;
}
.role-card__title {
    font-family: var(--font-display);
    font-weight: 400;
    font-size: clamp(1.5rem, 2.4vw, 2rem);
    line-height: 1;
    margin-bottom: 1rem;
    color: var(--color-ink);
}
.role-card__desc {
    font-size: 0.92rem;
    line-height: 1.85;
    color: var(--color-ink-soft);
}

/* Nomad Philosophy */
.careers__nomad {
    margin-bottom: clamp(3rem, 6vw, 5rem);
    padding: clamp(2.5rem, 5vw, 4rem) 0;
    border-top: 1px solid var(--color-line);
}
.careers__nomad-head {
    margin-bottom: clamp(2rem, 4vw, 3rem);
}
.careers__nomad-label {
    display: block;
    font-family: var(--font-display);
    font-style: normal;
    font-size: 0.95rem;
    color: var(--color-gold);
    margin-bottom: 1.25rem;
    letter-spacing: var(--ls-base);
}
.careers__nomad-title {
    font-family: var(--font-display);
    font-weight: 400;
    font-size: clamp(1.6rem, 3.5vw, 2.6rem);
    line-height: 1.3;
    letter-spacing: var(--ls-heading);
    color: var(--color-ink);
    display: flex;
    flex-direction: column;
    gap: 0.3em;
}
.careers__nomad-title em {
    font-style: normal;
    color: var(--color-accent);
}
.careers__nomad-title .line {
    display: block;
}
.careers__nomad-title .line--1 { padding-left: 0; }
.careers__nomad-title .line--2 { padding-left: 2em; }
.careers__nomad-title .line--3 { padding-left: 4em; }

@media (max-width: 768px) {
    .careers__nomad-title .line--2 { padding-left: 1.5em; }
    .careers__nomad-title .line--3 { padding-left: 3em; }
}
@media (max-width: 480px) {
    .careers__nomad-title .line--2 { padding-left: 1em; }
    .careers__nomad-title .line--3 { padding-left: 2em; }
}
.careers__nomad-image {
    margin: clamp(2rem, 4vw, 3rem) auto;
    overflow: hidden;
    aspect-ratio: 16 / 9;
    background: var(--color-bg-alt);
    max-width: 420px;
    width: 100%;
}
.careers__nomad-image-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
    filter: grayscale(0.05) contrast(1.02);
    transition: transform 1.5s var(--ease);
}
.careers__nomad-image:hover .careers__nomad-image-img {
    transform: scale(1.03);
}
.careers__nomad-body {
    max-width: 42em;
    margin-bottom: clamp(2.5rem, 4vw, 3.5rem);
}
.careers__nomad-text {
    font-size: 1rem;
    line-height: 2;
    color: var(--color-ink-soft);
    margin-bottom: 1.25rem;
}
.careers__nomad-highlight {
    font-family: var(--font-display);
    font-size: clamp(1.3rem, 2.5vw, 1.8rem);
    color: var(--color-accent);
    letter-spacing: var(--ls-base);
    line-height: 1.9;
    margin-bottom: clamp(2rem, 4vw, 2.8rem) !important;
}
.careers__nomad-text--accent {
    font-family: var(--font-display);
    font-style: normal;
    font-size: 1.15rem;
    color: var(--color-ink);
}
.careers__nomad-feature {
    display: flex;
    gap: clamp(1.5rem, 3vw, 2.5rem);
    padding: clamp(1.75rem, 3vw, 2.5rem);
    background: var(--color-bg-alt);
    border-left: 3px solid var(--color-gold);
    align-items: flex-start;
}
.careers__nomad-feature-mark {
    font-size: clamp(2rem, 4vw, 2.8rem);
    line-height: 1;
    color: var(--color-gold);
    flex-shrink: 0;
}
.careers__nomad-feature-body {
    flex: 1;
}
.careers__nomad-feature-title {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: clamp(1.15rem, 2vw, 1.4rem);
    margin-bottom: 0.75rem;
    color: var(--color-ink);
    letter-spacing: var(--ls-heading);
}
.careers__nomad-feature-desc {
    font-size: 0.95rem;
    line-height: 1.9;
    color: var(--color-ink-soft);
}
.careers__nomad-feature-desc strong {
    font-weight: 600;
    color: var(--color-accent);
}

/* Working Style */
.careers__conditions {
    margin-bottom: clamp(3rem, 6vw, 5rem);
    padding: clamp(2.5rem, 4vw, 3.5rem);
    background: var(--color-bg-alt);
    border: 1px solid var(--color-line);
}
.careers__conditions-title {
    font-family: var(--font-display);
    font-weight: 400;
    font-size: clamp(1.5rem, 2.4vw, 2rem);
    margin-bottom: 2rem;
    letter-spacing: var(--ls-heading);
    color: var(--color-ink);
}
.careers__conditions-list {
    border-top: 1px solid var(--color-line);
}
.careers__conditions-row {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 1.5rem;
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--color-line);
    font-size: 0.95rem;
}
.careers__conditions-row dt {
    font-family: var(--font-display);
    font-style: normal;
    color: var(--color-accent);
    font-size: 1rem;
}
.careers__conditions-row dd {
    color: var(--color-ink);
    line-height: 1.7;
}
.careers__conditions-row dd small {
    font-size: 0.8rem;
    color: var(--color-ink-mute);
    display: block;
    margin-top: 0.3rem;
}

/* Compensation */
.careers__compensation {
    margin-bottom: clamp(3rem, 6vw, 5rem);
    padding: clamp(2.5rem, 4vw, 3.5rem);
    background: var(--color-ink);
    color: var(--color-bg);
    position: relative;
    overflow: hidden;
}
.careers__compensation::before {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 60%;
    height: 100%;
    background: radial-gradient(
        circle at 70% 50%,
        rgba(160, 130, 86, 0.15) 0%,
        transparent 60%
    );
    pointer-events: none;
}
.careers__compensation-title {
    font-family: var(--font-display);
    font-weight: 400;
    font-size: clamp(1.5rem, 2.4vw, 2rem);
    margin-bottom: 2rem;
    letter-spacing: var(--ls-heading);
    color: var(--color-bg);
    position: relative;
}
.careers__compensation-body {
    position: relative;
}
.careers__compensation-main {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(244, 241, 234, 0.2);
}
.careers__compensation-label {
    font-size: 0.8rem;
    letter-spacing: var(--ls-base);
    text-transform: uppercase;
    color: rgba(244, 241, 234, 0.6);
    flex-shrink: 0;
}
.careers__compensation-value {
    font-family: var(--font-display);
    display: inline-flex;
    align-items: baseline;
    gap: 0.2em;
    line-height: 1;
    color: var(--color-gold);
    font-weight: 400;
}
.careers__compensation-currency {
    font-style: normal;
    font-size: clamp(1rem, 1.8vw, 1.3rem);
    color: rgba(244, 241, 234, 0.75);
    letter-spacing: var(--ls-base);
    margin-right: 0.3em;
}
.careers__compensation-num {
    font-family: var(--font-display);
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 500;
    line-height: 1;
    color: var(--color-gold);
    letter-spacing: var(--ls-base);
}
.careers__compensation-unit {
    font-style: normal;
    font-family: var(--font-display);
    font-size: clamp(1.3rem, 2.2vw, 1.8rem);
    color: var(--color-gold);
    font-weight: 400;
}
.careers__compensation-tilde {
    font-style: normal;
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    color: rgba(244, 241, 234, 0.7);
    margin-left: 0.3em;
}
.careers__compensation-since {
    font-family: var(--font-display);
    font-style: normal;
    font-size: 0.95rem;
    color: rgba(244, 241, 234, 0.6);
    margin-left: 1rem;
}
.careers__compensation-note {
    font-size: 0.88rem;
    line-height: 1.9;
    color: rgba(244, 241, 234, 0.75);
}

/* CTA */
.careers__cta {
    text-align: center;
}
.careers__btn {
    display: inline-flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.25rem 2.5rem;
    border: 1px solid var(--color-ink);
    font-family: var(--font-display);
    font-size: clamp(1rem, 1.8vw, 1.25rem);
    transition: all 0.4s var(--ease);
    position: relative;
    overflow: hidden;
}
.careers__btn::before {
    content: "";
    position: absolute;
    inset: 0;
    background: var(--color-ink);
    transform: translateY(100%);
    transition: transform 0.5s var(--ease);
    z-index: -1;
}
.careers__btn:hover {
    color: var(--color-bg);
}
.careers__btn:hover::before {
    transform: translateY(0);
}
.careers__btn:active {
    transform: scale(0.97);
    transition: transform var(--duration-instant) var(--ease-snap);
}
.careers__btn-arrow {
    transition: transform 0.4s var(--ease);
}
.careers__btn:hover .careers__btn-arrow {
    transform: translateX(8px);
}
.careers__cta-note {
    margin-top: 1rem;
    font-size: 0.78rem;
    color: var(--color-ink-mute);
    letter-spacing: var(--ls-body);
}

@media (max-width: 900px) {
    .careers__roles { grid-template-columns: 1fr; }
    .careers__conditions-row { grid-template-columns: 1fr; gap: 0.3rem; }
}
@media (max-width: 600px) {
    .careers__nomad-feature {
        flex-direction: column;
        gap: 1rem;
    }
    .careers__compensation-main {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    .careers__compensation-value {
        flex-wrap: wrap;
    }
}

/* ---------- Company ---------- */
.company__inner {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: clamp(2rem, 5vw, 5rem);
    align-items: start;
}
.company__table {
    border-top: 1px solid var(--color-line);
    margin-top: 2rem;
}
.company__row {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 1.5rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--color-line);
}
.company__row dt {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: var(--ls-base);
    text-transform: uppercase;
    color: var(--color-ink-mute);
    padding-top: 0.25rem;
}
.company__row dd {
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--color-ink);
}
.company__en {
    display: inline-block;
    font-family: var(--font-display);
    font-style: normal;
    color: var(--color-ink-mute);
    font-size: 0.9rem;
    margin-top: 0.25rem;
}

.company__founder {
    margin: clamp(2rem, 4vw, 3rem) 0;
    padding: clamp(1.5rem, 3vw, 2rem) 0;
    border-bottom: 1px solid var(--color-line);
}
.company__founder-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.company__founder-label {
    font-family: var(--font-body);
    font-size: clamp(0.7rem, 1vw, 0.8rem);
    letter-spacing: var(--ls-base);
    text-transform: uppercase;
    color: var(--color-accent);
}
.company__founder-name {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    font-weight: 400;
    line-height: 1.3;
    margin: 0;
}
.company__founder-name-en {
    font-family: var(--font-body);
    font-size: clamp(0.85rem, 1.2vw, 1rem);
    color: var(--color-ink-mute);
    letter-spacing: var(--ls-base);
}

.company__related-link {
    display: inline-flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    text-decoration: none;
    transition: opacity 0.3s var(--ease);
    padding: 0.25rem 0;
}
.company__related-link:hover {
    opacity: 0.7;
}
.company__related-text {
    color: var(--color-ink);
    font-size: 0.95rem;
    border-bottom: 1px solid var(--color-line);
    padding-bottom: 0.15em;
    transition: border-color 0.3s var(--ease);
}
.company__related-link:hover .company__related-text {
    border-bottom-color: var(--color-accent);
}
.company__related-logo {
    height: 32px;
    width: auto;
    display: block;
    margin-top: 0.5rem;
}
@media (max-width: 600px) {
    .company__related-logo {
        height: 26px;
    }
}

.company__map {
    position: relative;
    width: 100%;
    max-width: 900px;
    margin: clamp(2rem, 4vw, 3rem) auto 0;
    background: var(--color-bg-alt);
}
.company__map img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
}
@media (max-width: 768px) {
    .company__map {
        max-width: 100%;
    }
}
.company__map-overlay {
    position: absolute;
    inset: auto 0 0 0;
    padding: 1.5rem;
    background: linear-gradient(0deg, rgba(15,15,14,0.85) 0%, rgba(15,15,14,0) 100%);
    color: var(--color-bg);
    display: flex;
    justify-content: space-between;
    align-items: end;
    font-size: 0.75rem;
    letter-spacing: var(--ls-base);
}
.company__map-coords {
    font-family: var(--font-display);
    font-style: normal;
    font-size: 0.8rem;
}

/* ---------- Contact ---------- */
.contact {
    text-align: center;
    padding-bottom: calc(var(--section-py) + 2rem);
}
.contact__inner {
    max-width: 720px;
    margin: 0 auto;
}
.contact__title-wrap {
    margin-bottom: clamp(3rem, 5vw, 4rem);
    text-align: center;
}
.contact__lead {
    margin-top: 1.5rem;
    color: var(--color-ink-soft);
    line-height: 2;
    font-size: 0.95rem;
}

.contact__form {
    display: flex;
    flex-direction: column;
    gap: clamp(1.75rem, 3vw, 2.5rem);
}
.contact__field {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.contact__label {
    font-family: var(--font-display);
    font-size: 1rem;
    color: var(--color-ink);
    letter-spacing: var(--ls-base);
}
.contact__required {
    color: var(--color-accent);
    font-style: normal;
    margin-left: 0.3em;
    font-size: 0.85rem;
}
.contact__optional {
    color: var(--color-ink-mute);
    font-size: 0.8rem;
    font-style: normal;
    margin-left: 0.3em;
}

.contact__input,
.contact__textarea {
    font-family: var(--font-body);
    font-size: 1rem;
    padding: 0.85rem 1rem;
    background: var(--color-bg);
    border: 1px solid var(--color-line);
    color: var(--color-ink);
    transition: border-color 0.3s var(--ease);
    width: 100%;
}
.contact__input:focus,
.contact__textarea:focus {
    outline: none;
    border-color: var(--color-accent);
}
.contact__textarea {
    resize: vertical;
    min-height: 140px;
    line-height: 1.8;
}

.contact__radio-group,
.contact__checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.contact__radio,
.contact__checkbox {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 0.85rem;
    border: 1px solid var(--color-line);
    background: var(--color-bg);
    cursor: pointer;
    transition: all 0.3s var(--ease);
    font-size: 0.92rem;
}
.contact__radio:hover,
.contact__checkbox:hover {
    border-color: var(--color-accent);
    background: var(--color-bg-alt);
}
.contact__radio input[type="radio"],
.contact__checkbox input[type="checkbox"] {
    accent-color: var(--color-accent);
    cursor: pointer;
}

.contact__input-file {
    font-family: var(--font-body);
    font-size: 0.9rem;
    padding: 0.75rem 0;
    color: var(--color-ink);
}
.contact__field-note {
    font-size: 0.78rem;
    color: var(--color-ink-mute);
    margin-top: -0.25rem;
}

.contact__submit-wrap {
    margin-top: 1rem;
    text-align: center;
}
.contact__btn {
    display: inline-flex;
    align-items: center;
    gap: 1.25rem;
    padding: 1.1rem 2.5rem;
    background: var(--color-ink);
    color: var(--color-bg);
    border: 1px solid var(--color-ink);
    font-family: var(--font-display);
    font-size: clamp(1rem, 1.8vw, 1.2rem);
    cursor: pointer;
    transition: all 0.4s var(--ease);
    position: relative;
    overflow: hidden;
}
.contact__btn:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
}
.contact__btn:active {
    transform: scale(0.97);
    transition: transform var(--duration-instant) var(--ease-snap);
}
.contact__btn-arrow {
    transition: transform 0.4s var(--ease);
}
.contact__btn:hover .contact__btn-arrow {
    transform: translateX(8px);
}
.contact__submit-note {
    margin-top: 1rem;
    font-size: 0.8rem;
    color: var(--color-ink-mute);
    line-height: 1.7;
}

@media (max-width: 600px) {
    .contact__btn {
        width: 100%;
        justify-content: center;
    }
}

/* ---------- Footer ---------- */
.footer {
    background: var(--color-ink);
    color: var(--color-bg);
    padding: clamp(3rem, 6vw, 5rem) var(--gutter) 2rem;
    position: relative;
    z-index: 2;
}
.footer__inner {
    max-width: 1600px;
    margin: 0 auto;
}
.footer__top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 2rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid rgba(244,241,234,0.15);
}
.footer__brand {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.footer__logo-img {
    width: 180px;
    height: auto;
    display: block;
    filter: invert(1);
    margin-bottom: 0.75rem;
}
@media (max-width: 600px) {
    .footer__logo-img {
        width: 140px;
    }
}
.footer__tag {
    font-size: 0.8rem;
    letter-spacing: var(--ls-base);
    color: rgba(244,241,234,0.6);
    text-transform: uppercase;
}
.footer__nav {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    font-size: 0.85rem;
    letter-spacing: var(--ls-button);
}
.footer__nav a {
    opacity: 0.7;
    transition: opacity 0.3s var(--ease);
}
.footer__nav a:hover { opacity: 1; }
.footer__bottom {
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 0.75rem;
    color: rgba(244,241,234,0.5);
    letter-spacing: var(--ls-body);
}

/* ---------- Reveal (scroll-triggered) ---------- */
.reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity var(--duration-gentle) var(--ease-out), transform var(--duration-gentle) var(--ease-out);
}
.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .nav { display: none; }

    /* When menu is open, neutralize header's backdrop-filter so .nav can
       escape its containing block and cover the full viewport */
    body.menu-open .header,
    body.menu-open .header.is-scrolled {
        background: transparent !important;
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
        border-bottom: none !important;
    }

    .nav.is-open,
    .header.is-scrolled .nav.is-open {
        position: fixed !important;
        top: 0 !important;
        left: 0 !important;
        right: 0 !important;
        bottom: 0 !important;
        width: 100vw !important;
        height: 100vh !important;
        height: 100dvh !important;
        background: rgba(15, 15, 14, 0.98) !important;
        z-index: 100 !important;
        display: flex !important;
        flex-direction: column !important;
        justify-content: center !important;
        align-items: center !important;
        padding: 2rem !important;
        overflow-y: auto !important;
    }
    .nav.is-open .nav__list {
        display: flex !important;
        flex-direction: column !important;
        gap: 1.5rem !important;
        width: 100% !important;
        max-width: 400px !important;
    }
    .nav.is-open .nav__link,
    .header.is-scrolled .nav.is-open .nav__link {
        color: rgba(244, 241, 234, 0.95) !important;
        font-size: 1.4rem !important;
        display: flex !important;
        align-items: baseline !important;
        gap: 0.8rem !important;
        padding: 0.6rem 0 !important;
        font-family: var(--font-display) !important;
        font-style: normal !important;
    }
    .nav.is-open .nav__num,
    .header.is-scrolled .nav.is-open .nav__num {
        color: rgba(160, 130, 86, 0.8) !important;
        font-size: 0.85rem !important;
        font-style: normal !important;
    }
    .nav__list {
        flex-direction: column;
        gap: 1.25rem;
    }
    .nav__link {
        font-size: 1.5rem;
        font-family: var(--font-display);
        font-style: normal;
    }
    .nav__num { font-size: 1rem; }
    .menu-toggle {
        display: flex;
        position: absolute;
        top: 50%;
        right: var(--gutter);
        transform: translateY(-50%);
        z-index: 101;
    }
    .menu-toggle.is-open span {
        background: rgba(244, 241, 234, 0.9);
    }

    .about__inner,
    .company__inner { grid-template-columns: 1fr; }

    .biz-item {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .biz-item--reverse .biz-item__visual { order: 0; }

    .philosophy__list { grid-template-columns: 1fr; }

    .ip__list { grid-template-columns: 1fr; gap: 1rem; }

    .company__row {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .company__founder {
        border-bottom: none;
        padding-bottom: 0;
    }

    .footer__top {
        flex-direction: column;
    }
    .footer__nav { flex-wrap: wrap; gap: 1.25rem; }

}

@media (max-width: 520px) {
    .about__stats { grid-template-columns: 1fr; gap: 1.5rem; }
    .section__title span:nth-child(2) { padding-left: 0; }
    .concept__headline span:nth-child(2) { padding-left: 0; }
    .concept__label { flex-direction: column; gap: 0.25rem; }
}

/* ---------- Reduced motion / mobile preloader ---------- */
@media (max-width: 600px) {
    .preloader {
        transition-duration: 0.3s !important;
    }
    .preloader__bar span {
        animation-duration: 0.8s !important;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    .opening__text,
    .preloader__logo,
    .preloader__bar span {
        animation: none !important;
        opacity: 1 !important;
        transform: none !important;
    }
    /* Keep a short fade for the intro overlay even under reduced-motion
       so mobile power-saver (which auto-enables it) still cross-fades. */
    .opening__intro {
        transition: opacity 0.5s ease-out, visibility 0.5s ease-out !important;
    }
    .section,
    .footer {
        transition: opacity 0.5s ease-in 0.1s !important;
    }
}

/* ---------- Force non-italic (designer directive: italic一切不使用) ---------- */
* {
    font-style: normal !important;
}