/* Source file for the site styles.
   Update this file first, then sync changes to css/style.css if you are not using a Sass build step. */

:root {
    --ink: #171717;
    --paper: #fff7ea;
    --paper-strong: rgba(255, 255, 255, 0.76);
    --surface-card: linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(245, 250, 255, 0.94));
    --surface-card-soft: linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(255, 248, 238, 0.92));
    --surface-card-rose: linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(246, 250, 255, 0.94));
    --surface-card-sky: linear-gradient(180deg, rgba(250, 252, 255, 0.9), rgba(237, 246, 255, 0.94));
    --surface-chip: rgba(255, 251, 245, 0.94);
    --yellow: #ffcf34;
    --orange: #ffcf34;
    --sky: #3aa6ff;
    --mint: #8ad9ff;
    --pink: #5bb4ff;
    --violet: #98c9ff;
    --line-strong: 1.5px;
    --line-soft: 1px;
    --shadow-lg: 4px 5px 0 rgba(23, 23, 23, 0.52);
    --shadow-md: 3px 4px 0 rgba(23, 23, 23, 0.44);
    --shadow-sm: 1.5px 2px 0 rgba(23, 23, 23, 0.32);
    --inner-highlight: inset 0 0 0 1px rgba(255, 255, 255, 0.42);
    --motion-quick: 120ms;
    --motion-soft: 220ms;
    --motion-expressive: 420ms;
    --motion-slow: 640ms;
    --motion-ambient: 16s;
    --motion-ease: cubic-bezier(.2, .8, .2, 1);
    --scroll-ratio: 0;
    --hero-parallax: 0;
    --pointer-x: 0;
    --pointer-y: 0;
    --magnet-x: 0px;
    --magnet-y: 0px;
    --card-pointer-x: 0px;
    --card-pointer-y: 0px;
    --detail-origin-x: -6px;
    --detail-origin-y: 14px;
    --radius-xl: 34px;
    --radius-lg: 24px;
    --radius-md: 18px;
    --container: min(1180px, calc(100vw - 32px));
    --header-container: min(1400px, calc(100vw - 20px));
    --font-body-ja: "Manrope", "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
    --font-body-zh: "Manrope", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    --font-body-en: "Manrope", "Helvetica Neue", Arial, sans-serif;
    --font-display-ja: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
    --font-display-zh: "Sora", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    --font-display-en: "Sora", "Manrope", "Helvetica Neue", Arial, sans-serif;
    --font-accent: "Bricolage Grotesque", sans-serif;
    --font-ui-ja: "Space Mono", "Noto Sans JP", "Hiragino Sans", sans-serif;
    --font-ui-zh: "Space Mono", "Noto Sans SC", "PingFang SC", sans-serif;
    --font-ui-en: "Space Mono", "Manrope", sans-serif;
    --font-body: var(--font-body-ja);
    --font-display: var(--font-display-ja);
    --font-ui: var(--font-ui-ja);
}

* {
    box-sizing: border-box;
}

html {
    font-size: 14px;
    scroll-behavior: smooth;
}

html:lang(ja) {
    --font-body: var(--font-body-ja);
    --font-display: var(--font-display-ja);
    --font-ui: var(--font-ui-ja);
}

html:lang(zh) {
    --font-body: var(--font-body-zh);
    --font-display: var(--font-display-zh);
    --font-ui: var(--font-ui-zh);
}

html:lang(en) {
    --font-body: var(--font-body-en);
    --font-display: var(--font-display-en);
    --font-ui: var(--font-ui-en);
}

body {
    margin: 0;
    color: var(--ink);
    font-family: var(--font-body);
    background:
        radial-gradient(circle at 15% 16%, rgba(58, 166, 255, 0.16), transparent 30%),
        radial-gradient(circle at 84% 20%, rgba(255, 207, 52, 0.2), transparent 24%),
        linear-gradient(145deg, #fff8ed 0%, #fffdf8 46%, #f3f9ff 100%);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

body::before,
body::after {
    display: none;
}

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

button {
    font: inherit;
    color: inherit;
    cursor: pointer;
}

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

.noise {
    display: none;
}

.orbit {
    display: none;
}

.orbit span {
    display: none;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    padding: 10px 0;
    backdrop-filter: blur(12px);
    background: rgba(255, 250, 242, 0.86);
    border-bottom: 1px solid rgba(23, 23, 23, 0.14);
}

.section-inner {
    width: var(--container);
    max-width: none;
    margin: 0 auto;
    position: relative;
    z-index: 3;
}

.header-inner {
    width: var(--header-container);
    max-width: none;
    margin: 0 auto;
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 14px;
}

.brand-mark {
    width: 52px;
    height: 52px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--sky), var(--yellow));
    border: var(--line-strong) solid var(--ink);
    border-radius: 20px;
    box-shadow: var(--inner-highlight), var(--shadow-sm);
    transform: rotate(-10deg);
    font-family: var(--font-accent);
    font-size: 1.2rem;
    font-weight: 800;
    color: white;
}

.brand-copy {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.brand-title {
    font-family: var(--font-accent);
    font-size: 1rem;
    font-weight: 800;
    line-height: 1;
}

.brand-subtitle {
    font-family: var(--font-ui);
    font-size: 0.62rem;
    letter-spacing: 0;
    opacity: 0.75;
}

.menu-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0.8rem 1rem;
    border: var(--line-strong) solid var(--ink);
    border-radius: 999px;
    background: white;
    box-shadow: var(--inner-highlight), var(--shadow-sm);
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 18px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 18px;
}

.lang-btn,
.filter-btn,
.ghost-btn,
.solid-btn {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    border: var(--line-strong) solid var(--ink);
    border-radius: 999px;
    box-shadow: var(--inner-highlight), var(--shadow-sm);
    transition:
        transform var(--motion-soft) var(--motion-ease),
        box-shadow var(--motion-soft) var(--motion-ease),
        background var(--motion-soft) var(--motion-ease),
        background-position var(--motion-expressive) var(--motion-ease),
        background-size var(--motion-expressive) var(--motion-ease),
        border-color var(--motion-soft) var(--motion-ease),
        color var(--motion-soft) var(--motion-ease);
}

.nav-link {
    position: relative;
    padding: 0.28rem 0;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    background: transparent;
    font-family: var(--font-ui);
    font-size: 0.73rem;
    font-weight: 700;
    letter-spacing: 0;
    opacity: 0.72;
    border-bottom: 2px solid transparent;
    transition:
        opacity var(--motion-soft) var(--motion-ease),
        letter-spacing var(--motion-soft) var(--motion-ease);
}

.nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -2px;
    height: 2px;
    background: var(--ink);
    border-radius: 999px;
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform var(--motion-soft) var(--motion-ease);
}

.lang-switcher {
    display: flex;
    align-items: center;
    gap: 8px;
    padding-left: 8px;
}

.lang-btn {
    width: 40px;
    height: 40px;
    display: inline-grid;
    place-items: center;
    background: white;
    font-family: var(--font-ui);
    font-size: 0.72rem;
    font-weight: 700;
}

.lang-btn[aria-pressed="true"] {
    background: var(--ink);
    color: white;
}

.lang-btn[aria-pressed="true"]::after {
    content: "";
    position: absolute;
    inset: 5px;
    z-index: 0;
    pointer-events: none;
    border: var(--line-soft) solid rgba(58, 166, 255, 0.58);
    border-radius: inherit;
    opacity: 0.72;
    animation: languagePulse 2.8s var(--motion-ease) infinite;
}

.lang-btn:hover,
.project-card:hover,
.contact-card:hover,
.service-card:hover {
    transform: translate(1px, 1px);
    box-shadow: var(--inner-highlight), 1px 1px 0 rgba(23, 23, 23, 0.7);
}

.nav-link:hover {
    opacity: 1;
    letter-spacing: 0.02em;
    border-bottom-color: transparent;
    transform: none;
    box-shadow: none;
}

.nav-link:hover::after {
    transform: scaleX(1);
}

.lang-btn:focus-visible,
.filter-btn:focus-visible,
.ghost-btn:focus-visible,
.solid-btn:focus-visible,
.nav-link:focus-visible {
    outline: 3px solid rgba(58, 166, 255, 0.42);
    outline-offset: 4px;
}

.firstview {
    padding: 34px 0 54px;
    min-height: min(640px, calc(100vh - 72px));
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(circle at 16% 18%, rgba(58, 166, 255, 0.18), transparent 28%),
        radial-gradient(circle at 76% 20%, rgba(255, 207, 52, 0.24), transparent 26%),
        linear-gradient(135deg, #fffaf2 0%, #fffdf8 54%, #edf7ff 100%);
    background-size: 118% 118%, 122% 122%, 100% 100%;
    animation: firstviewAir var(--motion-ambient) var(--motion-ease) infinite alternate;
}

.firstview::before,
.firstview::after {
    content: "";
    position: absolute;
    z-index: 0;
    pointer-events: none;
    border: var(--line-soft) solid rgba(23, 23, 23, 0.2);
    box-shadow: var(--inner-highlight);
}

.firstview::before {
    width: clamp(84px, 13vw, 172px);
    height: clamp(84px, 13vw, 172px);
    right: 7%;
    top: 23%;
    border-radius: 999px;
    background: rgba(255, 207, 52, 0.12);
    animation: ambientDrift calc(var(--motion-ambient) * 1.28) var(--motion-ease) infinite alternate;
}

.firstview::after {
    width: clamp(92px, 16vw, 210px);
    height: 18px;
    left: 8%;
    bottom: 13%;
    border-radius: 999px;
    background: rgba(58, 166, 255, 0.12);
    transform: rotate(-8deg);
    animation: ambientSlide calc(var(--motion-ambient) * 1.05) var(--motion-ease) infinite alternate;
}

.firstview-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.92fr) minmax(310px, 0.68fr);
    gap: 34px;
    align-items: center;
}

.motion-stage {
    position: fixed;
    inset: 66px 0 0;
    z-index: 2;
    pointer-events: none;
    overflow: hidden;
    mix-blend-mode: multiply;
}

.kinetic-motif {
    position: absolute;
    width: clamp(220px, 34vw, 460px);
    aspect-ratio: 1;
    right: clamp(14px, 6vw, 92px);
    top: clamp(118px, 17vh, 190px);
    z-index: 0;
    pointer-events: none;
    opacity: 0.86;
    transform:
        translate3d(
            calc((var(--hero-parallax) * -18px) + (var(--pointer-x) * 8px)),
            calc((var(--hero-parallax) * 30px) + (var(--pointer-y) * 8px)),
            0
        )
        rotate(calc((var(--hero-parallax) * -3deg) + (var(--pointer-x) * 1.2deg)));
    transition:
        opacity var(--motion-slow) var(--motion-ease),
        transform var(--motion-soft) var(--motion-ease);
}

body[data-motion-scene="home"] .kinetic-motif {
    opacity: 0.82;
}

body[data-motion-scene="work"] .kinetic-motif {
    opacity: 0.3;
    transform:
        translate3d(
            calc((var(--hero-parallax) * -10px) + (var(--pointer-x) * 6px)),
            calc((var(--hero-parallax) * 20px) + (var(--pointer-y) * 6px)),
            0
        )
        scale(0.86)
        rotate(calc(-10deg + (var(--pointer-x) * 1deg)));
}

body[data-motion-scene="services"] .kinetic-motif,
body[data-motion-scene="about"] .kinetic-motif,
body[data-motion-scene="contact"] .kinetic-motif {
    opacity: 0.18;
    transform:
        translate3d(
            calc((var(--hero-parallax) * -6px) + (var(--pointer-x) * 4px)),
            calc((var(--hero-parallax) * 16px) + (var(--pointer-y) * 4px)),
            0
        )
        scale(0.72)
        rotate(-16deg);
}

.kinetic-motif > span {
    position: absolute;
    display: block;
}

.kinetic-motif-e {
    inset: 18%;
    place-items: center;
    border: var(--line-strong) solid rgba(23, 23, 23, 0.74);
    border-radius: 34% 42% 36% 46%;
    background:
        radial-gradient(circle at 28% 22%, rgba(255, 207, 52, 0.52), transparent 32%),
        radial-gradient(circle at 76% 70%, rgba(58, 166, 255, 0.26), transparent 38%),
        rgba(255, 255, 255, 0.2);
    box-shadow: var(--inner-highlight), 3px 4px 0 rgba(23, 23, 23, 0.18);
    color: rgba(23, 23, 23, 0.78);
    font-family: var(--font-accent);
    font-size: clamp(5rem, 12vw, 11rem);
    font-weight: 800;
    line-height: 1;
    transform: rotate(-9deg);
    animation: motifBreath calc(var(--motion-ambient) * 1.15) var(--motion-ease) infinite alternate;
}

.kinetic-motif > .kinetic-motif-e {
    display: grid;
}

.kinetic-orbit {
    inset: 9%;
    border: var(--line-soft) solid rgba(23, 23, 23, 0.42);
    border-radius: 50%;
}

.kinetic-orbit-a {
    transform: rotate(-18deg) scaleX(1.18);
    animation: motifOrbit calc(var(--motion-ambient) * 1.55) linear infinite;
}

.kinetic-orbit-b {
    inset: 17% 6%;
    transform: rotate(26deg) scaleX(1.26);
    border-color: rgba(58, 166, 255, 0.46);
    animation: motifOrbitReverse calc(var(--motion-ambient) * 1.85) linear infinite;
}

.kinetic-paper {
    width: 18%;
    aspect-ratio: 1;
    border: var(--line-strong) solid rgba(23, 23, 23, 0.76);
    border-radius: 28%;
    box-shadow: var(--inner-highlight), 2px 3px 0 rgba(23, 23, 23, 0.22);
}

.kinetic-paper-a {
    right: 8%;
    top: 18%;
    background: rgba(255, 207, 52, 0.76);
    animation: motifPaperA calc(var(--motion-ambient) * 1.22) var(--motion-ease) infinite alternate;
}

.kinetic-paper-b {
    left: 10%;
    bottom: 20%;
    width: 13%;
    background: rgba(58, 166, 255, 0.72);
    animation: motifPaperB calc(var(--motion-ambient) * 1.38) var(--motion-ease) infinite alternate;
}

.kinetic-stamp {
    right: 20%;
    bottom: 12%;
    width: 24%;
    aspect-ratio: 1;
    border: var(--line-soft) dashed rgba(23, 23, 23, 0.46);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.12);
    animation: motifStamp calc(var(--motion-ambient) * 1.7) var(--motion-ease) infinite alternate;
}

.kinetic-motif > .kinetic-step,
.kinetic-motif > .kinetic-code-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    z-index: 4;
    border: var(--line-soft) solid rgba(23, 23, 23, 0.7);
    box-shadow: var(--inner-highlight), 1px 2px 0 rgba(23, 23, 23, 0.18);
    font-family: var(--font-ui);
    font-weight: 700;
    line-height: 1;
    color: rgba(23, 23, 23, 0.82);
}

.kinetic-step {
    --step-drift-x: 4px;
    --step-drift-y: -4px;
    padding: 0.5rem 0.72rem;
    border-radius: 999px;
    background: rgba(255, 251, 245, 0.78);
    font-size: clamp(0.54rem, 0.86vw, 0.72rem);
    animation: motifStepDrift calc(var(--motion-ambient) * 1.42) var(--motion-ease) infinite alternate;
}

.kinetic-step-idea {
    left: 36%;
    top: 2%;
    rotate: -6deg;
}

.kinetic-step-ui {
    right: -1%;
    top: 38%;
    --step-drift-x: -5px;
    --step-drift-y: 3px;
    rotate: 5deg;
}

.kinetic-step-code {
    left: 44%;
    bottom: 1%;
    --step-drift-x: 5px;
    --step-drift-y: 4px;
    rotate: 4deg;
}

.kinetic-step-launch {
    left: -3%;
    top: 48%;
    --step-drift-x: -4px;
    --step-drift-y: -3px;
    rotate: -8deg;
}

.kinetic-code-chip {
    min-width: 2.35rem;
    padding: 0.34rem 0.42rem;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.62);
    font-size: clamp(0.48rem, 0.72vw, 0.62rem);
    opacity: 0.82;
    animation: motifCodeBlink calc(var(--motion-ambient) * 1.18) var(--motion-ease) infinite alternate;
}

.kinetic-code-chip-html {
    left: 16%;
    top: 18%;
}

.kinetic-code-chip-css {
    right: 17%;
    bottom: 24%;
    animation-delay: -3s;
}

.kinetic-code-chip-js {
    left: 22%;
    bottom: 16%;
    animation-delay: -6s;
}

.panel,
.hero-card,
.stat-card,
.service-card,
.about-card,
.contact-card,
.detail-card,
.project-card {
    background: var(--surface-card);
    border: var(--line-strong) solid var(--ink);
    box-shadow: var(--inner-highlight), var(--shadow-lg);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(8px);
}

.hero-copy-panel {
    padding: 0;
}

.firstview-copy-panel {
    min-height: 420px;
    display: grid;
    align-content: center;
    gap: 16px;
    position: relative;
    padding: clamp(12px, 2.5vw, 28px);
    background: transparent;
    transform: translateY(calc(var(--hero-parallax) * -10px));
}

.firstview-copy-panel > * {
    position: relative;
    z-index: 1;
}

.firstview-copy-panel.reveal {
    opacity: 1;
    transform: translateY(calc(var(--hero-parallax) * -10px));
}

.firstview-copy-panel.reveal > *:not(.hero-title),
.firstview-copy-panel.reveal .hero-title span {
    opacity: 0;
    transform: translateY(18px);
    transition:
        opacity var(--motion-slow) var(--motion-ease),
        transform var(--motion-slow) var(--motion-ease);
}

.firstview-copy-panel.reveal.is-visible > *:not(.hero-title),
.firstview-copy-panel.reveal.is-visible .hero-title span {
    opacity: 1;
    transform: translateY(0);
}

.firstview-copy-panel.reveal .eyebrow {
    transition-delay: 40ms;
}

.firstview-copy-panel.reveal .hero-title span:first-child {
    display: inline-block;
    transition-delay: 120ms;
}

.firstview-copy-panel.reveal .hero-title span:last-child {
    display: inline-block;
    transition-delay: 210ms;
}

.firstview-copy-panel.reveal .hero-description {
    transition-delay: 320ms;
}

.firstview-copy-panel.reveal .hero-actions {
    transition-delay: 430ms;
}

.firstview-copy-panel .hero-description {
    max-width: 50ch;
    font-size: 0.82rem;
    line-height: 1.92;
    margin-bottom: 0;
}

.firstview-copy-panel .hero-tags {
    display: none;
}

.firstview-copy-panel .hero-actions {
    margin-top: 6px;
}

.balance-motif {
    --balance-roll: 104px;
    display: inline-grid;
    grid-template-columns: minmax(268px, 340px);
    align-items: center;
    padding: 0.5rem;
    border: var(--line-strong) solid rgba(23, 23, 23, 0.86);
    border-radius: 999px;
    background:
        linear-gradient(115deg, rgba(255, 207, 52, 0.14), rgba(255, 251, 245, 0.88), rgba(58, 166, 255, 0.12)),
        rgba(255, 251, 245, 0.78);
    box-shadow: var(--inner-highlight), var(--shadow-sm);
    translate: 0 1px;
    transition:
        transform var(--motion-soft) var(--motion-ease),
        box-shadow var(--motion-soft) var(--motion-ease),
        background-position var(--motion-expressive) var(--motion-ease);
}

.balance-motif:hover {
    transform: translateY(-4px) rotate(-0.35deg);
    background-position: 100% 0;
    box-shadow: var(--inner-highlight), 3px 6px 0 rgba(23, 23, 23, 0.34);
}

.balance-motif:active {
    transform: translate(1px, 2px) scale(0.985);
    box-shadow: var(--inner-highlight), 1px 1px 0 rgba(23, 23, 23, 0.68);
    transition-duration: var(--motion-quick);
}

.balance-motif:focus-visible {
    outline: 3px solid rgba(58, 166, 255, 0.6);
    outline-offset: 4px;
}

.balance-label {
    font-family: var(--font-ui);
    font-size: 0.56rem;
    font-weight: 700;
    line-height: 1;
    color: rgba(23, 23, 23, 0.76);
}

.balance-rail {
    position: relative;
    display: block;
    height: 58px;
    border: var(--line-soft) solid var(--ink);
    border-radius: 999px;
    background:
        linear-gradient(90deg, transparent 0 11%, rgba(23, 23, 23, 0.28) 11% 89%, transparent 89%) center 40px / 100% 1px no-repeat,
        linear-gradient(90deg, rgba(58, 166, 255, 0.24), rgba(255, 207, 52, 0.46), rgba(58, 166, 255, 0.18)),
        rgba(255, 255, 255, 0.82);
    box-shadow: var(--inner-highlight), 1px 2px 0 rgba(23, 23, 23, 0.18);
    transform-origin: center;
    animation: balanceBeamTilt 6.8s var(--motion-ease) infinite alternate;
    overflow: visible;
}

.balance-rail::before {
    content: "";
    position: absolute;
    left: 50%;
    top: calc(100% + 2px);
    width: 0;
    height: 0;
    border-left: 7px solid transparent;
    border-right: 7px solid transparent;
    border-bottom: 13px solid rgba(23, 23, 23, 0.86);
    transform: translateX(-50%);
}

.balance-rail::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 40px;
    width: 5px;
    height: 5px;
    border-radius: 999px;
    background: var(--ink);
    transform: translate(-50%, -50%);
}

.balance-cta-label {
    position: absolute;
    left: 50%;
    top: 8px;
    z-index: 3;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64%;
    min-width: 9.6rem;
    height: 30px;
    padding: 0 1rem;
    border-radius: 999px;
    background:
        linear-gradient(90deg, rgba(255, 255, 255, 0.52), rgba(255, 255, 255, 0.18)),
        transparent;
    font-family: var(--font-body);
    font-size: 0.92rem;
    font-weight: 800;
    line-height: 1;
    color: var(--ink);
    letter-spacing: 0.01em;
    transform: translateX(-50%);
    transition: transform var(--motion-expressive) var(--motion-ease);
}

.balance-motif:hover .balance-cta-label {
    transform: translate(-50%, -1px);
}

.balance-ball {
    position: absolute;
    left: 50%;
    top: 40px;
    z-index: 2;
    width: 17px;
    height: 17px;
    border: var(--line-soft) solid var(--ink);
    border-radius: 999px;
    background: linear-gradient(135deg, var(--sky), var(--yellow));
    box-shadow: var(--inner-highlight), 1px 2px 0 rgba(23, 23, 23, 0.22);
    transform: translate(-50%, -50%);
    animation: balanceBallRoll 6.8s var(--motion-ease) infinite alternate;
}

.hero-card {
    display: grid;
    grid-template-rows: auto auto 1fr;
    gap: 10px;
    padding: 16px;
    position: relative;
    background:
        radial-gradient(circle at 18% 18%, rgba(255, 207, 52, 0.36), transparent 28%),
        radial-gradient(circle at 86% 24%, rgba(58, 166, 255, 0.22), transparent 30%),
        var(--surface-card);
    transform: translateY(calc(var(--hero-parallax) * 14px));
}

.hero-card.reveal {
    transform: translateY(28px) scale(0.985);
    transition-delay: 150ms;
    transition-duration: var(--motion-slow);
    transition-timing-function: var(--motion-ease);
}

.hero-card.reveal.is-visible {
    transform: translateY(calc(var(--hero-parallax) * 14px)) scale(1);
}

.hero-card-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    width: fit-content;
    padding: 0.56rem 0.76rem;
    border: var(--line-strong) solid var(--ink);
    border-radius: 16px;
    background: var(--surface-chip);
    box-shadow: var(--inner-highlight), var(--shadow-sm);
    font-family: var(--font-ui);
    font-size: 0.58rem;
    font-weight: 700;
}

.hero-badge-dot {
    width: 10px;
    height: 10px;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--pink), var(--orange));
    border: var(--line-soft) solid var(--ink);
    flex: 0 0 auto;
}

.hero-avatar {
    position: relative;
    width: 74px;
    aspect-ratio: 1;
    flex: 0 0 auto;
    border: var(--line-strong) solid var(--ink);
    border-radius: 24px;
    box-shadow: var(--inner-highlight), var(--shadow-md);
    background: linear-gradient(135deg, var(--sky), var(--violet), var(--pink));
    overflow: hidden;
}

.hero-avatar-ring,
.hero-avatar-core,
.hero-avatar-particle,
.hero-avatar-chip {
    position: absolute;
    display: block;
}

.hero-avatar-ring {
    border: var(--line-soft) solid rgba(23, 23, 23, 0.72);
    border-radius: 999px;
}

.hero-avatar-ring-a {
    inset: 11px;
    transform: rotate(-22deg) scaleX(1.18);
    animation: avatarRingOrbit 12s linear infinite;
}

.hero-avatar-ring-b {
    inset: 21px 12px;
    transform: rotate(19deg) scaleX(1.2);
    animation: avatarRingOrbitReverse 15s linear infinite;
}

.hero-avatar-core {
    z-index: 2;
    width: 18px;
    height: 18px;
    left: 50%;
    top: 50%;
    border: var(--line-soft) solid var(--ink);
    border-radius: 999px;
    background: var(--yellow);
    transform: translate(-50%, -50%);
}

.hero-avatar-particle {
    z-index: 3;
    left: 50%;
    top: 50%;
    width: 8px;
    height: 8px;
    border: var(--line-soft) solid var(--ink);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.9);
    box-shadow: var(--inner-highlight), 1px 1px 0 rgba(23, 23, 23, 0.2);
}

.hero-avatar-particle-a {
    background: var(--yellow);
    animation: avatarParticleOrbitA 7.8s linear infinite;
}

.hero-avatar-particle-b {
    width: 6px;
    height: 6px;
    background: rgba(255, 255, 255, 0.95);
    animation: avatarParticleOrbitB 9.6s linear infinite reverse;
}

.hero-avatar-particle-c {
    width: 7px;
    height: 7px;
    background: var(--sky);
    animation: avatarParticleOrbitC 11.2s linear infinite;
}

.hero-avatar-chip {
    width: 18px;
    height: 18px;
    border: var(--line-soft) solid var(--ink);
    background: white;
}

.hero-avatar-chip-a {
    right: 8px;
    top: 10px;
    border-radius: 999px;
}

.hero-avatar-chip-b {
    left: 9px;
    bottom: 10px;
    border-radius: 6px;
    background: var(--yellow);
}

.hero-card h2 {
    font-family: var(--font-body);
    font-size: 0.88rem;
    font-weight: 700;
    line-height: 1.42;
    text-wrap: balance;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    padding: 0.52rem 0.84rem;
    border: var(--line-strong) solid var(--ink);
    border-radius: 999px;
    background: var(--surface-chip);
    box-shadow: var(--inner-highlight), var(--shadow-sm);
    font-size: 0.62rem;
    font-family: var(--font-ui);
    letter-spacing: 0;
}

.eyebrow::before {
    content: "";
    width: 10px;
    height: 10px;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--sky), var(--yellow));
    border: var(--line-soft) solid var(--ink);
}

h1,
h2,
h3,
h4 {
    margin: 0;
    font-family: var(--font-display);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.12;
}

html:lang(en) h1,
html:lang(en) h2,
html:lang(en) h3,
html:lang(en) h4 {
    font-weight: 800;
    letter-spacing: -0.04em;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5.9vw, 4.85rem);
    line-height: 1.01;
    letter-spacing: -0.045em;
    margin-bottom: 0;
    max-width: 9.5ch;
    text-wrap: balance;
}

html:lang(ja) .hero-title {
    font-weight: 700;
}

html:lang(en) .hero-title {
    letter-spacing: -0.05em;
}

.gradient-text {
    background: linear-gradient(94deg, var(--sky) 8%, #0f5ba8 54%, var(--ink) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-title .gradient-text {
    display: inline-block;
    font-size: 0.92em;
    margin-top: 0.05em;
}

.hero-description {
    max-width: 52ch;
    font-size: 0.74rem;
    line-height: 1.94;
    margin-bottom: 16px;
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 26px;
}

.tag-chip,
.mini-chip,
.tool-chip,
.detail-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 0.64rem 0.9rem;
    border: var(--line-strong) solid var(--ink);
    border-radius: 999px;
    box-shadow: var(--inner-highlight), var(--shadow-sm);
    font-weight: 650;
    background: var(--surface-chip);
    font-family: var(--font-ui);
    font-size: 0.68rem;
}

.tag-chip:nth-child(1) {
    background: rgba(255, 207, 52, 0.24);
}

.tag-chip:nth-child(2) {
    background: rgba(58, 166, 255, 0.2);
}

.tag-chip:nth-child(3) {
    background: rgba(58, 166, 255, 0.2);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.solid-btn,
.ghost-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    padding: 0.76rem 1.06rem;
    font-family: var(--font-body);
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0;
    translate: var(--magnet-x) var(--magnet-y);
    transform: translateZ(0);
}

.solid-btn > span,
.ghost-btn > span {
    position: relative;
    z-index: 1;
}

.btn-icon {
    position: relative;
    width: 1rem;
    height: 1rem;
    flex: 0 0 auto;
    color: currentColor;
    transition: transform var(--motion-expressive) var(--motion-ease);
}

.btn-icon::before,
.btn-icon::after {
    content: "";
    position: absolute;
    display: block;
}

.btn-icon-spark::before,
.btn-icon-spark::after {
    top: 50%;
    left: 50%;
    background: currentColor;
    border-radius: 999px;
    transform: translate(-50%, -50%);
}

.btn-icon-spark::before {
    width: 2px;
    height: 1rem;
}

.btn-icon-spark::after {
    width: 1rem;
    height: 2px;
}

.btn-icon-launch::before {
    width: 0.7rem;
    height: 0.7rem;
    top: 0.02rem;
    right: 0.02rem;
    border-top: 2px solid currentColor;
    border-right: 2px solid currentColor;
    border-radius: 2px;
}

.btn-icon-launch::after {
    width: 0.78rem;
    height: 2px;
    left: 0.08rem;
    bottom: 0.12rem;
    background: currentColor;
    border-radius: 999px;
    transform: rotate(-45deg);
    transform-origin: left center;
}

.btn-icon-download::before {
    width: 2px;
    height: 0.72rem;
    top: 0.06rem;
    left: 50%;
    background: currentColor;
    border-radius: 999px;
    transform: translateX(-50%);
}

.btn-icon-download::after {
    width: 0.48rem;
    height: 0.48rem;
    left: 50%;
    bottom: 0.04rem;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: translateX(-50%) rotate(45deg);
}

.solid-btn {
    background: linear-gradient(135deg, var(--yellow), #ffe79f);
    color: var(--ink);
}

.ghost-btn {
    background: var(--surface-chip);
}

.ghost-btn,
.contact-actions .solid-btn,
.detail-footer .solid-btn {
    background: var(--surface-chip);
}

.ghost-btn::before,
.contact-actions .solid-btn::before,
.detail-footer .solid-btn::before {
    content: "";
    position: absolute;
    left: -36%;
    top: 50%;
    z-index: 0;
    width: 36%;
    height: 2px;
    border-radius: 999px;
    background: linear-gradient(90deg, transparent, var(--sky), transparent);
    opacity: 0;
    transform: translateY(-50%);
    transition:
        transform var(--motion-expressive) var(--motion-ease),
        opacity var(--motion-soft) var(--motion-ease);
}

.ghost-btn:hover,
.contact-actions .solid-btn:hover,
.detail-footer .solid-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--inner-highlight), 2px 3px 0 rgba(23, 23, 23, 0.36);
}

.ghost-btn:hover::before,
.contact-actions .solid-btn:hover::before,
.detail-footer .solid-btn:hover::before {
    opacity: 1;
    transform: translate(380%, -50%);
}

.ghost-btn:hover .btn-icon,
.contact-actions .solid-btn:hover .btn-icon,
.detail-footer .solid-btn:hover .btn-icon {
    transform: translate(3px, -3px);
}

.ghost-btn:active,
.contact-actions .solid-btn:active,
.detail-footer .solid-btn:active {
    transform: translate(1px, 1px);
    box-shadow: var(--inner-highlight), 1px 1px 0 rgba(23, 23, 23, 0.64);
    transition-duration: var(--motion-quick);
}

.hero-list {
    display: grid;
    gap: 10px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.hero-list li {
    padding: 0.72rem 0.82rem;
    border: var(--line-strong) solid var(--ink);
    border-radius: 18px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(255, 250, 240, 0.9));
    box-shadow: var(--inner-highlight), var(--shadow-sm);
}

.hero-list strong {
    display: block;
    margin-bottom: 4px;
    font-family: var(--font-body);
    font-size: 0.66rem;
    font-weight: 700;
}

section {
    scroll-margin-top: 84px;
}

.section-shell {
    padding: 40px 0;
    position: relative;
    overflow: hidden;
}

.section-shell::before {
    content: "";
    position: absolute;
    inset: -8% 0 auto;
    height: 42%;
    z-index: 0;
    pointer-events: none;
    opacity: 0.45;
    background:
        radial-gradient(circle at 22% 40%, rgba(58, 166, 255, 0.1), transparent 34%),
        radial-gradient(circle at 78% 20%, rgba(255, 207, 52, 0.12), transparent 30%);
    transform: translate3d(0, calc(var(--scroll-ratio) * -22px), 0);
}

#work.section-shell {
    background:
        radial-gradient(circle at 88% 12%, rgba(58, 166, 255, 0.14), transparent 22%),
        linear-gradient(180deg, #edf7ff 0%, #fffdf8 100%);
    background-position:
        center calc(var(--scroll-ratio) * -32px),
        center;
}

#services.section-shell {
    background:
        radial-gradient(circle at 12% 20%, rgba(255, 207, 52, 0.16), transparent 24%),
        linear-gradient(180deg, #fffdf8 0%, #fff9ed 100%);
}

#about.section-shell {
    background:
        radial-gradient(circle at 84% 24%, rgba(58, 166, 255, 0.12), transparent 26%),
        linear-gradient(180deg, #f7fbff 0%, #fffdf8 100%);
}

#contact.section-shell {
    background:
        radial-gradient(circle at 16% 26%, rgba(58, 166, 255, 0.12), transparent 24%),
        linear-gradient(180deg, #fffdf8 0%, #fff1b8 100%);
}

.section-heading {
    display: grid;
    gap: 10px;
    margin-bottom: 24px;
}

.section-heading::before {
    display: none;
}

.section-kicker {
    display: inline-flex;
    width: fit-content;
    padding: 0.44rem 0.72rem;
    border: var(--line-strong) solid var(--ink);
    border-radius: 999px;
    box-shadow: var(--inner-highlight), var(--shadow-sm);
    background: var(--surface-chip);
    font-family: var(--font-ui);
    font-size: 0.64rem;
    font-weight: 700;
    letter-spacing: 0;
    color: var(--ink);
}

.section-title {
    font-family: var(--font-body);
    font-size: clamp(0.98rem, 1.7vw, 1.32rem);
    font-weight: 700;
    line-height: 1.3;
    max-width: 14ch;
    text-wrap: balance;
}

.section-intro {
    max-width: 64ch;
    font-size: 0.72rem;
    line-height: 1.9;
    margin: 0;
}

.filters {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 22px 0 24px;
}

.filter-btn {
    --filter-fill: rgba(58, 166, 255, 0.14);
    padding: 0.56rem 0.8rem;
    background:
        linear-gradient(90deg, var(--filter-fill), rgba(58, 166, 255, 0.08)) left center / 0 100% no-repeat,
        var(--surface-chip);
    font-family: var(--font-ui);
    font-size: 0.66rem;
    font-weight: 650;
    letter-spacing: 0;
    transition:
        padding var(--motion-soft) var(--motion-ease),
        transform var(--motion-soft) var(--motion-ease),
        box-shadow var(--motion-soft) var(--motion-ease),
        background-size var(--motion-expressive) var(--motion-ease),
        color var(--motion-soft) var(--motion-ease);
}

.filter-btn::before {
    content: "";
    position: absolute;
    left: 0.72rem;
    top: 50%;
    width: 8px;
    height: 8px;
    border: var(--line-soft) solid var(--ink);
    border-radius: 999px;
    background: var(--yellow);
    opacity: 0;
    transform: translate(-8px, -50%) scale(0.55);
    transition:
        opacity var(--motion-soft) var(--motion-ease),
        transform var(--motion-expressive) var(--motion-ease);
}

.filter-btn:hover {
    background-size: 100% 100%;
    transform: translateY(-1px);
    box-shadow: var(--inner-highlight), 2px 3px 0 rgba(23, 23, 23, 0.34);
}

.filter-btn[aria-pressed="true"] {
    --filter-fill: rgba(58, 166, 255, 0.74);
    padding-left: 1.7rem;
    background-size: 100% 100%;
    color: #fff;
}

.filter-btn[aria-pressed="true"]::before {
    opacity: 1;
    transform: translate(0, -50%) scale(1);
}

.filter-btn:active {
    transform: translate(1px, 1px);
    box-shadow: var(--inner-highlight), 1px 1px 0 rgba(23, 23, 23, 0.64);
    transition-duration: var(--motion-quick);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.projects-grid.reveal {
    opacity: 1;
    transform: none;
}

.projects-grid.reveal:not(.is-visible) .project-card {
    opacity: 0;
    transform: translateY(18px) scale(0.985);
}

.projects-grid.reveal.is-visible .project-card,
.projects-grid.is-switching-in .project-card {
    animation: projectStaggerIn var(--motion-slow) var(--motion-ease) both;
    animation-delay: calc(var(--stagger-index, 0) * 58ms);
}

.projects-grid.is-switching-out .project-card {
    opacity: 0;
    transform: translateY(10px) scale(0.985);
    transition-delay: calc(var(--stagger-index, 0) * 18ms);
}

.project-card {
    position: relative;
    overflow: hidden;
    padding: 16px;
    cursor: pointer;
    transition:
        opacity var(--motion-soft) var(--motion-ease),
        transform var(--motion-soft) var(--motion-ease),
        box-shadow var(--motion-soft) var(--motion-ease);
}

.project-card.is-active {
    transform: translate(2px, 2px);
    box-shadow: var(--inner-highlight), 1px 1px 0 rgba(23, 23, 23, 0.78);
}

.project-card:hover {
    transform: translateY(-3px) rotate(-0.25deg);
    box-shadow: var(--inner-highlight), 3px 6px 0 rgba(23, 23, 23, 0.34);
}

.project-card:active {
    transform: translate(1px, 2px);
    box-shadow: var(--inner-highlight), 1px 1px 0 rgba(23, 23, 23, 0.68);
    transition-duration: var(--motion-quick);
}

#work .project-card {
    background:
        radial-gradient(circle at 16% 16%, rgba(255, 207, 52, 0.2), transparent 28%),
        var(--surface-card);
}

.project-card-header {
    display: flex;
    justify-content: flex-start;
    gap: 12px;
    margin-bottom: 10px;
}

.project-category {
    display: inline-flex;
    align-items: center;
    padding: 0.4rem 0.72rem;
    border: var(--line-soft) solid var(--ink);
    border-radius: 999px;
    background: var(--surface-chip);
    box-shadow: var(--inner-highlight), var(--shadow-sm);
    font-size: 0.68rem;
    font-weight: 700;
}

.project-capability {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    width: fit-content;
    margin-bottom: 10px;
    padding: 0.42rem 0.68rem;
    border: var(--line-soft) solid var(--ink);
    border-radius: 999px;
    background: rgba(58, 166, 255, 0.13);
    box-shadow: var(--inner-highlight), 1px 2px 0 rgba(23, 23, 23, 0.18);
    font-family: var(--font-ui);
    font-size: 0.58rem;
    font-weight: 700;
    color: rgba(23, 23, 23, 0.86);
}

.project-capability::before {
    content: "";
    width: 7px;
    height: 7px;
    border: var(--line-soft) solid var(--ink);
    border-radius: 999px;
    background: var(--yellow);
}

.project-visual {
    min-height: 200px;
    border: var(--line-strong) solid var(--ink);
    border-radius: 24px;
    box-shadow: var(--inner-highlight), var(--shadow-md);
    background:
        linear-gradient(135deg, rgba(58, 166, 255, 0.16), rgba(255, 207, 52, 0.18)),
        rgba(255, 255, 255, 0.62);
    display: grid;
    place-items: center;
    position: relative;
    overflow: hidden;
    margin-bottom: 14px;
    transition:
        transform var(--motion-soft) var(--motion-ease),
        background-position var(--motion-slow) var(--motion-ease);
}

.project-visual::before,
.project-visual::after {
    content: "";
    position: absolute;
    z-index: 0;
    border: var(--line-strong) solid var(--ink);
    box-shadow: var(--inner-highlight), var(--shadow-sm);
    opacity: 0.82;
}

.project-visual::before {
    width: 52px;
    height: 52px;
    right: 18px;
    top: 18px;
    border-radius: 18px;
    background: rgba(255, 207, 52, 0.8);
    transform: rotate(12deg);
    transition: transform var(--motion-expressive) var(--motion-ease);
}

.project-visual::after {
    width: 76px;
    height: 16px;
    left: 18px;
    bottom: 22px;
    border-radius: 999px;
    background: rgba(58, 166, 255, 0.78);
    transition: transform var(--motion-expressive) var(--motion-ease);
}

.project-window-bar {
    position: absolute;
    left: 15px;
    top: 14px;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    width: 78px;
    height: 22px;
    padding: 0 8px;
    border: var(--line-soft) solid rgba(23, 23, 23, 0.72);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.72);
    box-shadow: var(--inner-highlight), 1px 2px 0 rgba(23, 23, 23, 0.18);
    transition: transform var(--motion-expressive) var(--motion-ease);
}

.project-window-bar span {
    width: 5px;
    height: 5px;
    border: var(--line-soft) solid var(--ink);
    border-radius: 999px;
    background: var(--yellow);
}

.project-window-bar span:nth-child(2) {
    background: var(--sky);
}

.project-window-bar span:nth-child(3) {
    background: rgba(255, 255, 255, 0.9);
}

.project-code-tags {
    position: absolute;
    right: 15px;
    bottom: 15px;
    z-index: 2;
    display: flex;
    gap: 6px;
    transition: transform var(--motion-expressive) var(--motion-ease);
}

.project-code-tags span {
    padding: 0.32rem 0.42rem;
    border: var(--line-soft) solid rgba(23, 23, 23, 0.74);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.7);
    box-shadow: var(--inner-highlight), 1px 2px 0 rgba(23, 23, 23, 0.16);
    font-family: var(--font-ui);
    font-size: 0.52rem;
    font-weight: 700;
    transition: transform var(--motion-expressive) var(--motion-ease);
}

.project-node-line {
    position: absolute;
    left: 22px;
    right: 22px;
    top: 50%;
    z-index: 0;
    height: 1px;
    background: repeating-linear-gradient(90deg, rgba(23, 23, 23, 0.34) 0 8px, transparent 8px 15px);
    opacity: 0.44;
    transform: rotate(-7deg);
    transition: transform var(--motion-expressive) var(--motion-ease), opacity var(--motion-soft) var(--motion-ease);
}

.project-symbol {
    position: relative;
    z-index: 1;
    width: 128px;
    height: 128px;
    opacity: 0.96;
    animation: symbolAir 12s var(--motion-ease) infinite alternate;
    transition: transform var(--motion-expressive) var(--motion-ease);
}

.project-symbol--detail {
    width: 180px;
    height: 180px;
}

.project-symbol-shape {
    position: absolute;
    display: block;
    border: var(--line-strong) solid var(--ink);
    box-shadow: var(--inner-highlight), var(--shadow-sm);
    transition:
        translate var(--motion-expressive) var(--motion-ease),
        rotate var(--motion-expressive) var(--motion-ease),
        scale var(--motion-expressive) var(--motion-ease);
}

.project-card:hover .project-visual {
    transform: translateY(-2px);
}

.project-card:hover .project-visual::before {
    transform: translate(3px, -2px) rotate(22deg);
}

.project-card:hover .project-visual::after {
    transform: translate(-4px, 2px) rotate(-2deg);
}

.project-card:hover .project-window-bar {
    transform: translate(3px, -2px);
}

.project-card:hover .project-code-tags {
    transform: translate(-2px, 2px);
}

.project-card:hover .project-code-tags span:nth-child(2) {
    transform: translate(2px, -3px) rotate(4deg);
}

.project-card:hover .project-node-line {
    opacity: 0.62;
    transform: rotate(-3deg) scaleX(1.06);
}

.project-card:hover .project-symbol {
    transform: rotate(-1.5deg);
}

.project-card:hover .project-symbol-shape-a {
    translate: calc(-4px + var(--card-pointer-x)) calc(-3px + var(--card-pointer-y));
}

.project-card:hover .project-symbol-shape-b {
    translate: calc(4px + (var(--card-pointer-x) * -0.75)) calc(-2px + (var(--card-pointer-y) * 0.8));
    rotate: 4deg;
}

.project-card:hover .project-symbol-shape-c {
    translate: calc(2px + (var(--card-pointer-x) * 0.55)) calc(4px + (var(--card-pointer-y) * -0.55));
    rotate: -3deg;
}

.project-symbol--illustration .project-symbol-shape-a {
    width: 82px;
    height: 82px;
    left: 20px;
    top: 22px;
    border-radius: 50% 46% 54% 48%;
    background: var(--yellow);
}

.project-symbol--illustration .project-symbol-shape-b {
    width: 44px;
    height: 44px;
    right: 10px;
    top: 8px;
    border-radius: 18px;
    background: var(--sky);
    transform: rotate(12deg);
}

.project-symbol--illustration .project-symbol-shape-c {
    width: 72px;
    height: 18px;
    left: 6px;
    bottom: 10px;
    border-radius: 999px;
    background: var(--pink);
}

.project-symbol--logo .project-symbol-shape-a {
    width: 92px;
    height: 92px;
    left: 18px;
    top: 18px;
    border-radius: 28px;
    background: var(--sky);
    transform: rotate(-8deg);
}

.project-symbol--logo .project-symbol-shape-b {
    width: 58px;
    height: 58px;
    left: 36px;
    top: 36px;
    border-radius: 999px;
    background: white;
}

.project-symbol--logo .project-symbol-shape-c {
    width: 26px;
    height: 26px;
    right: 8px;
    bottom: 16px;
    border-radius: 999px;
    background: var(--yellow);
}

.project-symbol--web .project-symbol-shape-a {
    width: 108px;
    height: 76px;
    left: 10px;
    top: 24px;
    border-radius: 18px;
    background: white;
}

.project-symbol--web .project-symbol-shape-b {
    width: 82px;
    height: 14px;
    left: 23px;
    top: 42px;
    border-radius: 999px;
    background: var(--sky);
}

.project-symbol--web .project-symbol-shape-c {
    width: 52px;
    height: 34px;
    left: 38px;
    bottom: 14px;
    border-radius: 14px;
    background: var(--yellow);
}

.project-symbol--frontend .project-symbol-shape-a {
    width: 108px;
    height: 72px;
    left: 10px;
    top: 28px;
    border-radius: 20px;
    background: linear-gradient(180deg, white, rgba(58, 166, 255, 0.2));
}

.project-symbol--frontend .project-symbol-shape-b {
    width: 76px;
    height: 16px;
    left: 26px;
    top: 48px;
    border-radius: 999px;
    background: var(--yellow);
}

.project-symbol--frontend .project-symbol-shape-c {
    width: 38px;
    height: 38px;
    right: 6px;
    bottom: 10px;
    border-radius: 999px;
    background: var(--sky);
}

.project-symbol--poster .project-symbol-shape-a {
    width: 82px;
    height: 112px;
    left: 24px;
    top: 8px;
    border-radius: 18px;
    background: linear-gradient(180deg, white, rgba(255, 207, 52, 0.78));
}

.project-symbol--poster .project-symbol-shape-b {
    width: 64px;
    height: 18px;
    left: 34px;
    top: 28px;
    border-radius: 999px;
    background: var(--sky);
}

.project-symbol--poster .project-symbol-shape-c {
    width: 44px;
    height: 44px;
    right: 6px;
    bottom: 10px;
    border-radius: 999px;
    background: var(--pink);
}

.project-symbol--ad .project-symbol-shape-a {
    width: 112px;
    height: 68px;
    left: 8px;
    top: 34px;
    border-radius: 22px;
    background: var(--yellow);
    transform: rotate(-4deg);
}

.project-symbol--ad .project-symbol-shape-b {
    width: 46px;
    height: 46px;
    right: 4px;
    top: 8px;
    border-radius: 999px;
    background: var(--sky);
}

.project-symbol--ad .project-symbol-shape-c {
    width: 18px;
    height: 88px;
    left: 24px;
    top: 18px;
    border-radius: 999px;
    background: white;
    transform: rotate(18deg);
}

.project-title {
    font-family: var(--font-body);
    font-size: 0.78rem;
    font-weight: 700;
    line-height: 1.48;
    margin: 0 0 8px;
    transition: transform var(--motion-soft) var(--motion-ease);
}

.project-card:hover .project-title {
    transform: translateX(4px);
}

.project-summary {
    min-height: 4.8em;
    margin: 0 0 14px;
    line-height: 1.84;
    font-size: 0.68rem;
}

.project-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.detail-wrap {
    margin-top: 24px;
}

.detail-card {
    display: grid;
    grid-template-columns: minmax(260px, 0.9fr) minmax(0, 1.1fr);
    gap: 20px;
    padding: 20px;
    transition:
        opacity var(--motion-soft) var(--motion-ease),
        transform var(--motion-soft) var(--motion-ease);
}

.detail-card.is-switching-out {
    opacity: 0;
    transform: translateY(12px) scale(0.99);
}

.detail-card.is-switching-in {
    animation: detailSlideFade var(--motion-expressive) var(--motion-ease) both;
}

#work .detail-card {
    background:
        radial-gradient(circle at 18% 18%, rgba(255, 207, 52, 0.18), transparent 32%),
        var(--surface-card);
}

.detail-visual {
    min-height: 320px;
    border: var(--line-strong) solid var(--ink);
    border-radius: 32px;
    box-shadow: var(--inner-highlight), var(--shadow-md);
    padding: 20px;
    position: relative;
    overflow: hidden;
    background:
        linear-gradient(135deg, rgba(58, 166, 255, 0.16), rgba(255, 207, 52, 0.18)),
        rgba(255, 255, 255, 0.62);
}

.detail-visual::before {
    content: "";
    position: absolute;
    width: 84px;
    height: 84px;
    right: 24px;
    bottom: 24px;
    border: var(--line-strong) solid var(--ink);
    border-radius: 28px;
    box-shadow: var(--inner-highlight), var(--shadow-sm);
    background: rgba(255, 207, 52, 0.78);
    transform: rotate(12deg);
}

.detail-symbol {
    position: absolute;
    left: 18px;
    bottom: 18px;
}

.detail-visual-copy {
    position: relative;
    z-index: 3;
    display: grid;
    gap: 12px;
    max-width: 260px;
}

.detail-visual-copy strong {
    font-family: var(--font-body);
    font-size: 1.04rem;
    font-weight: 700;
}

.detail-content {
    display: grid;
    gap: 16px;
    align-content: start;
}

.detail-header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 12px;
    align-items: flex-start;
}

.detail-role {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 10px;
    width: fit-content;
    padding: 0.58rem 0.76rem;
    border: var(--line-strong) solid var(--ink);
    border-radius: 999px;
    background:
        linear-gradient(90deg, rgba(58, 166, 255, 0.12), rgba(255, 207, 52, 0.16)),
        var(--surface-chip);
    box-shadow: var(--inner-highlight), var(--shadow-sm);
}

.detail-role span {
    font-family: var(--font-ui);
    font-size: 0.62rem;
    font-weight: 700;
    opacity: 0.72;
}

.detail-role strong {
    font-family: var(--font-body);
    font-size: 0.7rem;
    font-weight: 700;
}

.detail-title {
    font-family: var(--font-body);
    font-size: clamp(1.08rem, 2vw, 1.46rem);
    font-weight: 700;
    line-height: 1.18;
    text-wrap: balance;
}

.detail-subtitle {
    margin: 6px 0 0;
    font-size: 0.8rem;
    line-height: 1.68;
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.detail-block {
    padding: 16px;
    border: var(--line-strong) solid var(--ink);
    border-radius: 24px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(255, 250, 240, 0.9));
    box-shadow: var(--inner-highlight), var(--shadow-sm);
}

.detail-block h4 {
    margin-bottom: 10px;
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 700;
}

.detail-block p,
.detail-block ul {
    margin: 0;
    line-height: 1.85;
    font-size: 0.74rem;
}

.detail-block ul {
    padding-left: 1.2rem;
}

.detail-tools {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.detail-footer {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
}

.services-grid,
.about-grid,
.contact-grid {
    display: grid;
    gap: 18px;
}

.services-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.service-card {
    padding: 24px;
    background: var(--surface-card-soft);
}

.service-card:nth-child(2) {
    background: var(--surface-card-soft);
}

.service-card:nth-child(3) {
    background: var(--surface-card-soft);
}

#about .about-card {
    background:
        radial-gradient(circle at 88% 16%, rgba(58, 166, 255, 0.16), transparent 26%),
        var(--surface-card);
}

#contact .contact-card {
    background:
        radial-gradient(circle at 16% 18%, rgba(255, 207, 52, 0.24), transparent 28%),
        var(--surface-card);
}

.service-number {
    display: inline-grid;
    place-items: center;
    width: 48px;
    height: 48px;
    margin-bottom: 18px;
    border: var(--line-strong) solid var(--ink);
    border-radius: 16px;
    box-shadow: var(--inner-highlight), var(--shadow-sm);
    background: var(--yellow);
    font-family: var(--font-accent);
    font-size: 0.82rem;
    font-weight: 700;
}

.service-card:nth-child(2) .service-number {
    background: var(--yellow);
    color: var(--ink);
}

.service-card:nth-child(3) .service-number {
    background: var(--yellow);
    color: var(--ink);
}

.service-card h3 {
    font-family: var(--font-body);
    font-size: 0.86rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.service-card p {
    margin: 0;
    line-height: 1.85;
    font-size: 0.76rem;
}

.about-grid {
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.9fr);
}

.about-card {
    padding: 28px;
}

.about-card p {
    font-size: 0.8rem;
    line-height: 1.82;
    margin: 0;
}

.timeline {
    display: grid;
    gap: 14px;
    margin-top: 20px;
}

.timeline-item {
    position: relative;
    display: grid;
    gap: 8px;
    align-items: start;
    padding: 15px 16px 15px 34px;
    border: var(--line-strong) solid var(--ink);
    border-radius: 22px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(255, 250, 240, 0.9));
    box-shadow: var(--inner-highlight), var(--shadow-sm);
}

.timeline-item::before {
    content: "";
    position: absolute;
    top: 20px;
    left: 16px;
    width: 8px;
    height: 8px;
    border: var(--line-strong) solid var(--ink);
    border-radius: 999px;
    background: var(--yellow);
    box-shadow: 0 0 0 5px rgba(255, 216, 77, 0.22);
}

.timeline-copy strong {
    display: block;
    margin-bottom: 4px;
    font-family: var(--font-body);
    font-size: 0.76rem;
    font-weight: 700;
}

.about-stack {
    display: grid;
    gap: 18px;
}

.toolkit-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 16px;
}

.tool-chip:nth-child(odd) {
    background: rgba(255, 207, 52, 0.24);
}

.tool-chip:nth-child(even) {
    background: var(--surface-chip);
}

.contact-grid {
    grid-template-columns: 1.15fr 0.85fr;
}

.contact-card {
    padding: 28px;
}

.contact-card h3 {
    font-family: var(--font-body);
    font-size: 0.94rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.contact-card p {
    margin: 0 0 14px;
    font-size: 0.8rem;
    line-height: 1.78;
}

.contact-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 18px;
}

.contact-link {
    font-size: 1rem;
    font-family: var(--font-display);
    font-weight: 800;
    word-break: break-all;
}

.contact-mini-list {
    display: grid;
    gap: 12px;
}

.contact-mini-item {
    padding: 14px;
    border: var(--line-strong) solid var(--ink);
    border-radius: 18px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(255, 250, 240, 0.9));
    box-shadow: var(--inner-highlight), var(--shadow-sm);
}

.contact-mini-item strong {
    display: block;
    margin-bottom: 4px;
    font-family: var(--font-body);
    font-size: 0.74rem;
    font-weight: 700;
}

#contact .contact-card.reveal .contact-actions,
#contact .contact-card.reveal .contact-link,
#contact .contact-card.reveal .contact-mini-item {
    opacity: 0;
    transform: translateY(12px);
}

#contact .contact-card.reveal.is-visible .contact-actions {
    animation: contactItemIn var(--motion-expressive) var(--motion-ease) 120ms both;
}

#contact .contact-card.reveal.is-visible .contact-link {
    animation: contactItemIn var(--motion-expressive) var(--motion-ease) 240ms both;
}

#contact .contact-card.reveal.is-visible .contact-mini-item {
    animation: contactItemIn var(--motion-expressive) var(--motion-ease) both;
    animation-delay: calc(180ms + var(--stagger-index, 0) * 70ms);
}

footer {
    padding: 40px 0 60px;
}

.footer-inner {
    width: var(--container);
    margin: 0 auto;
    padding: 18px 20px;
    border: var(--line-strong) solid var(--ink);
    border-radius: 28px;
    box-shadow: var(--inner-highlight), var(--shadow-md);
    background: rgba(23, 23, 23, 0.96);
    color: white;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 10px 20px;
    font-size: 0.78rem;
}

.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition:
        opacity var(--motion-slow) var(--motion-ease),
        transform var(--motion-slow) var(--motion-ease);
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@keyframes drift {
    0%,
    100% {
        transform: translateY(0) rotate(12deg);
    }
    50% {
        transform: translateY(-18px) rotate(18deg);
    }
}

@keyframes firstviewAir {
    0% {
        background-position: 0% 0%, 100% 0%, 0 0;
    }
    100% {
        background-position: 8% 4%, 92% 10%, 0 0;
    }
}

@keyframes motifBreath {
    0% {
        transform: translate3d(-4px, 2px, 0) rotate(-11deg) scale(0.99);
    }
    100% {
        transform: translate3d(5px, -5px, 0) rotate(-7deg) scale(1.015);
    }
}

@keyframes motifOrbit {
    0% {
        rotate: 0deg;
    }
    100% {
        rotate: 360deg;
    }
}

@keyframes motifOrbitReverse {
    0% {
        rotate: 360deg;
    }
    100% {
        rotate: 0deg;
    }
}

@keyframes motifPaperA {
    0% {
        transform: translate3d(0, 0, 0) rotate(8deg);
    }
    100% {
        transform: translate3d(-8px, 6px, 0) rotate(17deg);
    }
}

@keyframes motifPaperB {
    0% {
        transform: translate3d(0, 0, 0) rotate(-14deg);
    }
    100% {
        transform: translate3d(8px, -5px, 0) rotate(-4deg);
    }
}

@keyframes motifStamp {
    0% {
        transform: translate3d(0, 0, 0) rotate(4deg) scale(0.96);
    }
    100% {
        transform: translate3d(5px, -8px, 0) rotate(-8deg) scale(1.04);
    }
}

@keyframes motifStepDrift {
    0% {
        translate: 0 0;
    }
    100% {
        translate: var(--step-drift-x) var(--step-drift-y);
    }
}

@keyframes motifCodeBlink {
    0% {
        opacity: 0.68;
        translate: 0 0;
    }
    100% {
        opacity: 0.9;
        translate: 0 -3px;
    }
}

@keyframes balanceBeamTilt {
    0% {
        rotate: -3.5deg;
    }
    48% {
        rotate: 0deg;
    }
    100% {
        rotate: 3.5deg;
    }
}

@keyframes balanceBallRoll {
    0% {
        transform: translate(calc(-50% - var(--balance-roll)), -50%) rotate(-24deg);
    }
    48% {
        transform: translate(calc(-50% - 3px), -50%) rotate(0deg);
    }
    100% {
        transform: translate(calc(-50% + var(--balance-roll)), -50%) rotate(24deg);
    }
}

@keyframes avatarRingOrbit {
    0% {
        transform: rotate(-22deg) scaleX(1.18);
    }
    100% {
        transform: rotate(338deg) scaleX(1.18);
    }
}

@keyframes avatarRingOrbitReverse {
    0% {
        transform: rotate(19deg) scaleX(1.2);
    }
    100% {
        transform: rotate(-341deg) scaleX(1.2);
    }
}

@keyframes avatarParticleOrbitA {
    0% {
        transform: rotate(0deg) translateX(24px) translate(-50%, -50%);
    }
    100% {
        transform: rotate(360deg) translateX(24px) translate(-50%, -50%);
    }
}

@keyframes avatarParticleOrbitB {
    0% {
        transform: rotate(72deg) translateX(18px) translate(-50%, -50%);
    }
    100% {
        transform: rotate(432deg) translateX(18px) translate(-50%, -50%);
    }
}

@keyframes avatarParticleOrbitC {
    0% {
        transform: rotate(146deg) translateX(28px) translate(-50%, -50%);
    }
    100% {
        transform: rotate(506deg) translateX(28px) translate(-50%, -50%);
    }
}

@keyframes ambientDrift {
    0% {
        transform: translate3d(0, 0, 0) rotate(0deg);
    }
    100% {
        transform: translate3d(-12px, 10px, 0) rotate(8deg);
    }
}

@keyframes ambientSlide {
    0% {
        transform: translate3d(0, 0, 0) rotate(-8deg);
    }
    100% {
        transform: translate3d(16px, -8px, 0) rotate(-5deg);
    }
}

@keyframes quietRotate {
    0% {
        rotate: var(--ambient-rotate-from);
    }
    100% {
        rotate: var(--ambient-rotate-to);
    }
}

@keyframes quietRotateReverse {
    0% {
        rotate: var(--ambient-rotate-to);
    }
    100% {
        rotate: var(--ambient-rotate-from);
    }
}

@keyframes symbolAir {
    0% {
        translate: 0 0;
        rotate: -0.5deg;
    }
    100% {
        translate: 0 -4px;
        rotate: 1deg;
    }
}

@keyframes projectStaggerIn {
    0% {
        opacity: 0;
        transform: translateY(18px) scale(0.985);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes detailSlideFade {
    0% {
        opacity: 0;
        transform: translate(var(--detail-origin-x), var(--detail-origin-y)) scale(0.985);
    }
    100% {
        opacity: 1;
        transform: translate(0, 0) scale(1);
    }
}

@keyframes contactItemIn {
    0% {
        opacity: 0;
        transform: translateY(12px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes languagePulse {
    0%,
    100% {
        opacity: 0.2;
        transform: scale(0.92);
    }
    50% {
        opacity: 0.72;
        transform: scale(1.05);
    }
}

@keyframes bob {
    0%,
    100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-14px);
    }
}

@media (max-width: 1040px) {
    .firstview-layout,
    .detail-card,
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }

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

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

    .kinetic-motif {
        right: -5vw;
        top: 24vh;
        opacity: 0.5;
    }
}

@media (max-width: 820px) {
    .site-header {
        padding: 8px 0;
    }

    .menu-toggle {
        display: inline-flex;
    }

    .site-nav {
        position: absolute;
        top: calc(100% + 10px);
        right: 0;
        left: 0;
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 16px;
        border: var(--line-strong) solid var(--ink);
        border-radius: 28px;
        box-shadow: var(--shadow-md);
        background: rgba(255, 249, 239, 0.98);
    }

    .site-nav.is-open {
        display: flex;
    }

    .nav-links {
        flex-direction: column;
        align-items: stretch;
    }

    .lang-switcher {
        padding-left: 0;
    }

    .nav-link,
    .lang-btn {
        justify-content: center;
    }

    .nav-link {
        display: block;
        padding: 0.7rem 0;
        border-bottom: 1px solid rgba(23, 23, 23, 0.18);
    }

    .nav-links .nav-link:last-child {
        border-bottom-color: transparent;
    }

    .hero-copy-panel {
        padding: 0;
    }

    .hero-copy-panel,
    .hero-card,
    .service-card,
    .about-card,
    .contact-card,
    .detail-card {
        padding: 20px;
    }

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

    .firstview {
        padding-top: 10px;
        min-height: auto;
    }

    .kinetic-motif {
        width: min(72vw, 320px);
        right: -38vw;
        top: 30vh;
        opacity: 0.28;
    }

    .kinetic-step,
    .kinetic-code-chip {
        scale: 0.86;
    }

    body[data-motion-scene] .kinetic-motif {
        opacity: 0.24;
    }

    .firstview-copy-panel {
        min-height: auto;
        padding: 20px 0;
    }

    .balance-motif {
        --balance-roll: 86px;
        grid-template-columns: minmax(252px, 320px);
    }

    .section-heading {
        grid-template-columns: 1fr;
    }

    .filters {
        margin-left: 0;
    }
}

@media (max-width: 640px) {
    :root {
        --container: min(100vw - 18px, 100vw - 18px);
    }

    .section-inner {
        padding: 0 18px;
    }

    .header-inner {
        padding: 0 16px;
    }

    html {
        font-size: 13px;
    }

    body::before,
    body::after,
    .orbit {
        display: none;
    }

    .projects-grid,
    .services-grid,
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .hero-title {
        font-size: clamp(2.1rem, 11vw, 3.4rem);
        line-height: 1.02;
    }

    .firstview {
        padding-top: 6px;
        padding-bottom: 30px;
    }

    .kinetic-motif {
        width: 82vw;
        right: -70vw;
        top: 43vh;
        opacity: 0.16;
    }

    .kinetic-step,
    .kinetic-code-chip {
        display: none !important;
    }

    body[data-motion-scene] .kinetic-motif {
        opacity: 0.16;
    }

    body[data-motion-scene="work"] .kinetic-motif,
    body[data-motion-scene="services"] .kinetic-motif,
    body[data-motion-scene="about"] .kinetic-motif,
    body[data-motion-scene="contact"] .kinetic-motif {
        opacity: 0.1;
    }

    .firstview-copy-panel {
        min-height: auto;
        padding: 16px 0;
    }

    .balance-motif {
        --balance-roll: 68px;
        width: min(100%, 302px);
        grid-template-columns: minmax(0, 1fr);
    }

    .section-heading {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .section-heading::before {
        grid-row: auto;
    }

    .filters {
        margin-left: 0;
    }

    .brand-mark {
        width: 50px;
        height: 50px;
    }

    .detail-visual {
        min-height: 260px;
    }

    .timeline-item {
        grid-template-columns: 1fr;
    }

    .footer-inner {
        justify-content: flex-start;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation: none !important;
        transition: none !important;
    }

    .reveal,
    .reveal.is-visible {
        opacity: 1;
        transform: none;
    }

    .motion-stage {
        display: none;
    }

    .firstview-copy-panel.reveal > *:not(.hero-title),
    .firstview-copy-panel.reveal .hero-title span,
    .projects-grid.reveal .project-card,
    .projects-grid.is-switching-out .project-card,
    .detail-card,
    #contact .contact-card.reveal .contact-actions,
    #contact .contact-card.reveal .contact-link,
    #contact .contact-card.reveal .contact-mini-item {
        opacity: 1 !important;
        transform: none !important;
        translate: none !important;
        rotate: none !important;
        scale: none !important;
    }
}