:root {
    --chess-ink: #14201d;
    --chess-muted: #66736f;
    --chess-jade: #087b5b;
    --chess-jade-bright: #19b77f;
    --chess-jade-soft: #e8f5ef;
    --chess-gold: #d6a84b;
    --chess-ivory: #f8f6ef;
    --chess-dark: #071b18;
    --chess-line: rgba(16, 75, 61, .14);
}

.chess-page {
    overflow: clip;
    color: var(--chess-ink);
    background: #fff;
    font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
}

.chess-page *,
.chess-page *::before,
.chess-page *::after {
    box-sizing: border-box;
}

.chess-page a {
    color: inherit;
    text-decoration: none;
}

.chess-shell {
    width: min(1200px, calc(100% - 48px));
    margin-right: auto;
    margin-left: auto;
}

.chess-section {
    position: relative;
    padding: 104px 0;
    scroll-margin-top: 150px;
}

.chess-section__head > span,
.chess-eyebrow {
    display: block;
    margin-bottom: 16px;
    color: var(--chess-jade);
    font-size: 13px;
    font-weight: 700;
    line-height: 1.4;
    letter-spacing: .16em;
    text-transform: uppercase;
}

.chess-section__head h2 {
    max-width: 820px;
    margin: 0;
    color: var(--chess-ink);
    font-size: clamp(34px, 4vw, 54px);
    font-weight: 500;
    line-height: 1.18;
    letter-spacing: -.035em;
}

.chess-section__head p {
    max-width: 780px;
    margin: 22px 0 0;
    color: var(--chess-muted);
    font-size: 17px;
    line-height: 1.85;
}

.chess-section__head--center {
    margin-bottom: 54px;
    text-align: center;
}

.chess-section__head--center h2,
.chess-section__head--center p {
    margin-right: auto;
    margin-left: auto;
}

.chess-section__head--light h2,
.chess-section__head--light p {
    color: #fff;
}

.chess-section__head--light p {
    color: rgba(255, 255, 255, .68);
}

.chess-button {
    display: inline-flex;
    min-height: 52px;
    align-items: center;
    justify-content: center;
    gap: 20px;
    padding: 0 28px;
    border: 1px solid transparent;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 700;
    transition: transform .2s ease, background .2s ease, border-color .2s ease;
}

.chess-button:hover {
    transform: translateY(-2px);
}

.chess-button--primary {
    color: #fff !important;
    background: var(--chess-jade-bright);
}

.chess-button--ghost {
    color: #fff !important;
    border-color: rgba(255, 255, 255, .5);
    background: rgba(255, 255, 255, .04);
    backdrop-filter: blur(10px);
}

.chess-button--light {
    color: var(--chess-jade) !important;
    background: #fff;
}

.chess-text-link,
.chess-news__more {
    display: inline-flex;
    align-items: center;
    gap: 16px;
    color: var(--chess-jade) !important;
    font-weight: 700;
}

/* Hero */
.chess-hero {
    position: relative;
    display: flex;
    min-height: 720px;
    align-items: center;
    color: #fff;
    background: var(--chess-dark);
}

.chess-hero__media,
.chess-hero__shade {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.chess-hero__media {
    object-fit: cover;
    object-position: center;
}

.chess-hero__shade {
    background:
        linear-gradient(90deg, rgba(3, 21, 17, .96) 0%, rgba(3, 21, 17, .86) 38%, rgba(3, 21, 17, .26) 75%, rgba(3, 21, 17, .18) 100%),
        linear-gradient(0deg, rgba(3, 21, 17, .72), transparent 58%);
}

.chess-hero__inner {
    position: relative;
    z-index: 1;
}

.chess-hero__copy {
    width: min(690px, 66%);
}

.chess-eyebrow {
    display: flex;
    align-items: center;
    gap: 14px;
    color: #72e4b9;
    letter-spacing: .08em;
}

.chess-eyebrow span {
    width: 44px;
    height: 2px;
    background: #72e4b9;
}

.chess-hero h1 {
    margin: 0;
    color: #fff;
    font-size: clamp(46px, 5.25vw, 72px);
    font-weight: 500;
    line-height: 1.13;
    letter-spacing: -.045em;
}

.chess-hero__copy > p {
    max-width: 650px;
    margin: 28px 0 0;
    color: rgba(255, 255, 255, .78);
    font-size: 18px;
    line-height: 1.8;
}

.chess-hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 34px;
}

.chess-hero__signals {
    display: flex;
    flex-wrap: wrap;
    gap: 16px 28px;
    margin: 32px 0 0;
    padding: 0;
    list-style: none;
}

.chess-hero__signals li {
    color: rgba(255, 255, 255, .82);
    font-size: 14px;
}

.chess-hero__signals span {
    display: inline-flex;
    width: 22px;
    height: 22px;
    align-items: center;
    justify-content: center;
    margin-right: 8px;
    border-radius: 50%;
    color: #fff;
    background: var(--chess-jade-bright);
}

/* Sticky local navigation */
.chess-local-nav {
    position: sticky;
    z-index: 20;
    top: 90px;
    overflow-x: auto;
    border-bottom: 1px solid rgba(0, 0, 0, .08);
    background: rgba(255, 255, 255, .96);
    box-shadow: 0 10px 30px rgba(20, 32, 29, .04);
    scrollbar-width: none;
    backdrop-filter: blur(16px);
}

.chess-local-nav::-webkit-scrollbar { display: none; }

.chess-local-nav .chess-shell {
    display: flex;
    min-width: 760px;
    min-height: 62px;
    align-items: stretch;
    justify-content: center;
    gap: 46px;
}

.chess-local-nav a {
    position: relative;
    display: inline-flex;
    align-items: center;
    padding: 20px 0;
    color: #3c4945;
    font-size: 15px;
    font-weight: 700;
    white-space: nowrap;
}

.chess-local-nav a::after {
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    height: 3px;
    content: "";
    transform: scaleX(0);
    transform-origin: center;
    background: var(--chess-jade-bright);
    transition: transform .2s ease;
}

.chess-local-nav a:hover,
.chess-local-nav a.is-active { color: var(--chess-jade); }
.chess-local-nav a.is-active::after { transform: scaleX(1); }

/* Scene cards */
.chess-scenes { background: var(--chess-ivory); }
.chess-scenes__grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.chess-scenes__grid article {
    position: relative;
    display: grid;
    min-height: 360px;
    aspect-ratio: 4 / 5;
    place-items: center;
    overflow: hidden;
    padding: 26px;
    border-radius: 20px;
    background: #1a241f;
    box-shadow: 0 18px 45px rgba(20, 52, 43, .12);
}

.chess-scenes__grid article::after {
    position: absolute;
    inset: 0;
    z-index: 1;
    content: "";
    background: linear-gradient(180deg, rgba(4, 12, 10, .56), rgba(4, 12, 10, .76));
    transition: background .25s ease;
}

.chess-scenes__grid article:hover::after {
    background: linear-gradient(180deg, rgba(4, 12, 10, .5), rgba(4, 12, 10, .7));
}

.chess-scenes__grid article > img {
    position: absolute;
    inset: 0;
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s ease;
}

.chess-scenes__grid article:hover > img {
    transform: scale(1.035);
}

.chess-scenes__content {
    position: absolute;
    top: 50%;
    left: 50%;
    z-index: 2;
    width: 100%;
    padding: 24px;
    text-align: center;
    transform: translate(-50%, -50%);
}

.chess-scenes__grid h3 {
    margin: 0 0 12px;
    color: #fff;
    font-size: 23px;
    font-weight: 600;
    text-shadow: 0 2px 12px rgba(0, 0, 0, .3);
}

.chess-scenes__grid p {
    max-width: 230px;
    margin: 0 auto;
    color: rgba(255, 255, 255, .88);
    font-size: 14px;
    line-height: 1.75;
    text-shadow: 0 1px 8px rgba(0, 0, 0, .38);
}

/* Core capability */
.chess-capability {
    background:
        radial-gradient(circle at 88% 12%, rgba(8, 123, 91, .08), transparent 30%),
        linear-gradient(180deg, #f7f0e5, #f2e7d7);
}

.chess-capability__grid {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 16px;
    margin-top: 52px;
}

.chess-capability__grid article {
    position: relative;
    display: flex;
    min-width: 0;
    min-height: 154px;
    align-items: center;
    flex-direction: column;
    justify-content: center;
    padding: 22px 8px 18px;
    border: 1px solid rgba(8, 123, 91, .08);
    border-radius: 20px;
    text-align: center;
    background: rgba(255, 255, 255, .42);
    transition: transform .22s ease, border-color .22s ease, background .22s ease, box-shadow .22s ease;
}

.chess-capability__grid article:hover {
    z-index: 1;
    border-color: rgba(8, 123, 91, .2);
    background: rgba(255, 255, 255, .78);
    box-shadow: 0 16px 34px rgba(83, 63, 35, .11);
    transform: translateY(-4px);
}

.chess-capability__icon {
    display: flex;
    width: 60px;
    height: 60px;
    align-items: center;
    justify-content: center;
    border-radius: 18px;
    color: var(--chess-jade);
    background: rgba(8, 123, 91, .09);
    transition: color .22s ease, background .22s ease, transform .22s ease;
}

.chess-capability__icon svg {
    display: block;
    width: 36px;
    height: 36px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.chess-capability__grid article:hover .chess-capability__icon {
    color: #fff;
    background: var(--chess-jade);
    transform: scale(1.04);
}

.chess-capability__grid h3 {
    margin: 16px 0 0;
    color: var(--chess-ink);
    font-size: 15px;
    font-weight: 600;
    line-height: 1.35;
    white-space: nowrap;
}

.chess-capability__grid p {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    margin: -1px;
    padding: 0;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    border: 0;
    white-space: nowrap;
}

/* Smart lighting */
.chess-lighting { background: #fff; }
.chess-lighting__layout {
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: center;
    gap: clamp(48px, 7vw, 96px);
}

.chess-lighting__visual {
    position: relative;
}

.chess-lighting__visual img {
    display: block;
    width: 100%;
    aspect-ratio: 3 / 2;
    border-radius: 32px;
    object-fit: cover;
    box-shadow: 0 30px 80px rgba(9, 63, 50, .18);
}

.chess-lighting__badge {
    position: absolute;
    right: 24px;
    bottom: 24px;
    left: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 18px 22px;
    border: 1px solid rgba(255, 255, 255, .24);
    border-radius: 18px;
    color: #fff;
    background: rgba(4, 28, 23, .74);
    backdrop-filter: blur(14px);
}

.chess-lighting__badge strong { font-size: 17px; }
.chess-lighting__badge span { color: rgba(255, 255, 255, .7); font-size: 12px; }

.chess-lighting__steps {
    display: grid;
    gap: 0;
    margin: 34px 0 0;
    padding: 0;
    list-style: none;
}

.chess-lighting__steps li {
    display: grid;
    grid-template-columns: 48px 1fr;
    gap: 18px;
    padding: 20px 0;
    border-top: 1px solid var(--chess-line);
}

.chess-lighting__steps li > span {
    display: inline-flex;
    width: 46px;
    height: 46px;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--chess-jade);
    background: var(--chess-jade-soft);
    font-size: 12px;
    font-weight: 800;
}

.chess-lighting__steps h3 { margin: 0 0 6px; font-size: 18px; }
.chess-lighting__steps p { margin: 0; color: var(--chess-muted); font-size: 14px; line-height: 1.65; }
.chess-note { margin-top: 22px; padding: 18px 20px; border-radius: 16px; color: #4c5c57; background: var(--chess-ivory); font-size: 13px; line-height: 1.7; }
.chess-note strong { color: var(--chess-jade); }

/* Light-control diagram */
.chess-diagram {
    padding: 0 0 110px;
    background: #fff;
}

.chess-diagram__figure {
    margin: 46px 0 0;
    overflow: hidden;
    border: 1px solid var(--chess-line);
    border-radius: 28px;
    background: #fff;
    box-shadow: 0 26px 70px rgba(10, 61, 48, .1);
}

.chess-diagram__figure a { display: block; }
.chess-diagram__figure img { display: block; width: 100%; height: auto; }
.chess-diagram__figure figcaption {
    padding: 14px 18px;
    color: var(--chess-muted);
    background: #f6faf8;
    font-size: 12px;
    text-align: center;
}

/* Counter and common grids */
.chess-counter { background: #f5faf7; }
.chess-counter__grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.chess-counter__grid article {
    display: flex;
    min-height: 230px;
    align-items: center;
    flex-direction: column;
    justify-content: center;
    padding: 32px;
    border: 1px solid var(--chess-line);
    border-radius: 24px;
    text-align: center;
    background: #fff;
}

.chess-card-icon {
    display: inline-flex;
    width: 54px;
    height: 54px;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    transition: color .22s ease, background .22s ease, transform .22s ease;
}

.chess-card-icon svg {
    display: block;
    width: 32px;
    height: 32px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.chess-counter__grid .chess-card-icon {
    color: var(--chess-jade);
    background: var(--chess-jade-soft);
}

.chess-counter__grid article:hover .chess-card-icon {
    color: #fff;
    background: var(--chess-jade);
    transform: translateY(-2px);
}

.chess-counter__grid h3 { margin: 28px 0 10px; font-size: 21px; }
.chess-counter__grid p { max-width: 340px; margin: 0 auto; color: var(--chess-muted); font-size: 14px; line-height: 1.75; }

/* Member section */
.chess-member { background: var(--chess-ivory); }
.chess-member__layout {
    display: grid;
    grid-template-columns: .72fr 1.28fr;
    gap: clamp(48px, 8vw, 110px);
}
.chess-member__intro { position: sticky; top: 190px; align-self: start; }
.chess-member__intro .chess-text-link { margin-top: 28px; }
.chess-member__grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.chess-member__grid article { display: flex; min-height: 178px; align-items: center; flex-direction: column; justify-content: center; padding: 26px; border-radius: 22px; text-align: center; background: #fff; box-shadow: 0 16px 36px rgba(20, 52, 43, .045); }
.chess-member__grid .chess-card-icon { color: var(--chess-gold); background: rgba(197, 148, 65, .12); }
.chess-member__grid article:hover .chess-card-icon { color: #fff; background: var(--chess-gold); transform: translateY(-2px); }
.chess-member__grid h3 { margin: 20px 0 9px; font-size: 20px; }
.chess-member__grid p { max-width: 290px; margin: 0 auto; color: var(--chess-muted); font-size: 13px; line-height: 1.7; }

/* Scan order */
.chess-order__layout { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: clamp(48px, 7vw, 96px); }
.chess-order__visual { position: relative; margin: 0; }
.chess-order__visual img { display: block; width: 100%; aspect-ratio: 3 / 2; border-radius: 32px; object-fit: cover; box-shadow: 0 28px 70px rgba(20, 52, 43, .13); }
.chess-order__visual figcaption { position: absolute; right: 22px; bottom: 22px; left: 22px; padding: 16px 20px; border-radius: 16px; color: #fff; background: rgba(4, 28, 23, .75); font-size: 13px; text-align: center; backdrop-filter: blur(12px); }
.chess-order__copy ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin: 34px 0 0; padding: 0; list-style: none; }
.chess-order__copy li { padding: 18px; border-radius: 16px; background: #f4f9f6; }
.chess-order__copy strong, .chess-order__copy span { display: block; }
.chess-order__copy strong { color: var(--chess-jade); font-size: 14px; }
.chess-order__copy span { margin-top: 7px; color: var(--chess-muted); font-size: 12px; line-height: 1.6; }

/* Management */
.chess-management { background: linear-gradient(145deg, #071b18, #0c2d26); }
.chess-management__columns { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin-top: 54px; }
.chess-management__columns article { padding: 34px; border: 1px solid rgba(255, 255, 255, .1); border-radius: 26px; background: rgba(255, 255, 255, .045); }
.chess-management__tag { display: inline-block; padding: 8px 12px; border-radius: 999px; color: #071b18; background: #63ddb0; font-size: 12px; font-weight: 800; }
.chess-management__columns h3 { min-height: 64px; margin: 26px 0; color: #fff; font-size: 22px; line-height: 1.45; }
.chess-management__columns ul { display: flex; flex-wrap: wrap; gap: 10px; margin: 0; padding: 0; list-style: none; }
.chess-management__columns li { padding: 8px 11px; border: 1px solid rgba(255, 255, 255, .11); border-radius: 10px; color: rgba(255, 255, 255, .68); font-size: 12px; }

/* Hardware */
.chess-hardware { background: #fff; }
.chess-hardware__grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; }
.chess-hardware__grid article { min-height: 330px; padding: 24px 22px; border: 1px solid var(--chess-line); border-radius: 22px; background: #fff; text-align: center; box-shadow: 0 16px 38px rgba(20, 52, 43, .035); }
.chess-hardware__media { display: flex; height: 170px; align-items: center; justify-content: center; margin: 0; overflow: hidden; border-radius: 15px; background: #fff; }
.chess-hardware__media img { display: block; width: 100%; height: 100%; object-fit: contain; mix-blend-mode: multiply; }
.chess-hardware__grid h3 { margin: 24px 0 10px; font-size: 18px; }
.chess-hardware__grid p { margin: 0; color: var(--chess-muted); font-size: 12px; line-height: 1.7; }

/* News */
.chess-news { background: #f2f8f5; }
.chess-news__head { display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; margin-bottom: 48px; }
.chess-news__grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.chess-news__card { overflow: hidden; border: 1px solid var(--chess-line); border-radius: 24px; background: #fff; }
.chess-news__cover { display: block; overflow: hidden; aspect-ratio: 16 / 9; background: #dfece6; }
.chess-news__cover img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform .35s ease; }
.chess-news__card:hover .chess-news__cover img { transform: scale(1.035); }
.chess-news__body { padding: 24px; }
.chess-news__meta { display: flex; justify-content: space-between; gap: 14px; color: #8b9692; font-size: 12px; }
.chess-news__meta span { color: var(--chess-jade); font-weight: 700; }
.chess-news__body h3 { min-height: 60px; margin: 15px 0 11px; font-size: 18px; line-height: 1.55; }
.chess-news__body h3 a { display: -webkit-box; overflow: hidden; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.chess-news__body p { display: -webkit-box; min-height: 66px; overflow: hidden; margin: 0 0 20px; color: var(--chess-muted); font-size: 13px; line-height: 1.7; -webkit-box-orient: vertical; -webkit-line-clamp: 3; }
.chess-news__more { font-size: 13px; }
.chess-news__empty { padding: 50px; border-radius: 24px; background: #fff; text-align: center; }

/* FAQ and CTA */
.chess-faq__layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: clamp(48px, 8vw, 110px); }
.chess-faq details { border-top: 1px solid var(--chess-line); }
.chess-faq details:last-child { border-bottom: 1px solid var(--chess-line); }
.chess-faq summary { position: relative; padding: 25px 54px 25px 0; cursor: pointer; list-style: none; font-size: 17px; font-weight: 700; }
.chess-faq summary::-webkit-details-marker { display: none; }
.chess-faq summary::after { position: absolute; top: 20px; right: 0; display: inline-flex; width: 34px; height: 34px; align-items: center; justify-content: center; border-radius: 50%; color: var(--chess-jade); content: "+"; background: var(--chess-jade-soft); }
.chess-faq details[open] summary::after { content: "−"; }
.chess-faq details p { margin: -6px 52px 24px 0; color: var(--chess-muted); font-size: 14px; line-height: 1.8; }
.chess-cta { padding: 74px 0; color: #fff; background: linear-gradient(120deg, #076c50, #11a46f); text-align: center; }
.chess-cta__inner { display: flex; align-items: center; flex-direction: column; }
.chess-cta__inner > span { color: rgba(255, 255, 255, .74); font-size: 14px; }
.chess-cta h2 { max-width: 800px; margin: 16px auto 28px; color: #fff; font-size: clamp(30px, 4vw, 48px); font-weight: 500; line-height: 1.25; }

@media (max-width: 1080px) {
    .chess-local-nav { top: 80px; }
    .chess-capability__grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
    .chess-lighting__layout, .chess-order__layout { grid-template-columns: 1fr; }
    .chess-lighting__visual, .chess-order__visual { max-width: 820px; }
    .chess-hardware__grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
    .chess-section { padding: 84px 0; }
    .chess-scenes__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .chess-capability__grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .chess-counter__grid, .chess-management__columns, .chess-news__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .chess-management__columns article:last-child { grid-column: 1 / -1; }
    .chess-member__layout, .chess-faq__layout { grid-template-columns: 1fr; }
    .chess-member__intro { position: static; }
    .chess-hero__copy { width: min(700px, 84%); }
}

@media (max-width: 768px) {
    .chess-shell { width: min(100% - 32px, 680px); }
    .chess-section { padding: 68px 0; scroll-margin-top: 124px; }
    .chess-section__head--center { margin-bottom: 34px; text-align: left; }
    .chess-section__head h2 { font-size: clamp(28px, 8vw, 38px); line-height: 1.25; }
    .chess-section__head p { margin-top: 14px; font-size: 15px; line-height: 1.7; }
    .chess-section__head > span, .chess-eyebrow { margin-bottom: 11px; font-size: 11px; }

    .chess-hero { min-height: 520px; align-items: flex-end; }
    .chess-hero__media { object-position: 57% center; }
    .chess-hero__shade { background: linear-gradient(0deg, rgba(3, 21, 17, .98) 0%, rgba(3, 21, 17, .88) 58%, rgba(3, 21, 17, .38) 100%); }
    .chess-hero__inner { padding: 34px 0 28px; }
    .chess-hero__copy { width: 100%; }
    .chess-hero h1 { max-width: 620px; font-size: clamp(32px, 8.9vw, 42px); line-height: 1.18; }
    .chess-hero__copy > p { margin-top: 14px; font-size: 14px; line-height: 1.65; }
    .chess-hero__actions { margin-top: 20px; }
    .chess-button { min-height: 46px; padding: 0 20px; font-size: 13px; }
    .chess-hero__signals { gap: 9px 16px; margin-top: 18px; }
    .chess-hero__signals li { font-size: 12px; }

    .chess-local-nav { top: 70px; }
    .chess-local-nav .chess-shell { width: max-content; min-width: max-content; min-height: 52px; justify-content: flex-start; gap: 0; padding: 0 8px; }
    .chess-local-nav a { padding: 17px 15px; font-size: 12px; }
    .chess-local-nav a::after { right: 14px; left: 14px; }

    .chess-scenes__grid, .chess-capability__grid, .chess-counter__grid, .chess-member__grid, .chess-management__columns, .chess-hardware__grid, .chess-news__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
    .chess-management__columns article:last-child { grid-column: 1 / -1; }
    .chess-scenes .chess-section__head--center { text-align: center; }
    .chess-scenes .chess-section__head--center p { margin-right: auto; margin-left: auto; }
    .chess-scenes__grid article { min-height: 250px; padding: 16px 12px; border-radius: 16px; }
    .chess-scenes__content { padding: 14px 10px; }
    .chess-scenes__grid h3 { margin: 0 0 7px; font-size: 17px; }
    .chess-scenes__grid p { font-size: 11px; line-height: 1.55; }

    .chess-capability__grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin-top: 34px; }
    .chess-capability__grid article { min-height: 128px; padding: 16px 6px 14px; border-radius: 16px; }
    .chess-capability__icon { width: 52px; height: 52px; border-radius: 15px; }
    .chess-capability__icon svg { width: 31px; height: 31px; }
    .chess-capability__grid h3 { margin-top: 12px; font-size: 13px; }

    .chess-lighting__visual img, .chess-order__visual img { border-radius: 20px; }
    .chess-lighting__badge { right: 14px; bottom: 14px; left: 14px; padding: 13px 15px; }
    .chess-lighting__badge span { display: none; }
    .chess-lighting__steps { margin-top: 24px; }
    .chess-lighting__steps li { grid-template-columns: 42px 1fr; gap: 13px; padding: 15px 0; }
    .chess-lighting__steps li > span { width: 40px; height: 40px; }
    .chess-lighting__steps h3 { font-size: 16px; }
    .chess-lighting__steps p { font-size: 12px; }

    .chess-diagram { padding-bottom: 68px; }
    .chess-diagram__figure { margin-top: 28px; border-radius: 16px; }
    .chess-diagram__figure figcaption { padding: 10px 12px; font-size: 11px; }

    .chess-counter__grid article, .chess-member__grid article { min-height: 166px; padding: 20px 16px; border-radius: 17px; }
    .chess-hardware__grid article { min-height: 264px; padding: 16px 12px 18px; border-radius: 17px; }
    .chess-counter__grid h3 { margin: 26px 0 7px; font-size: 17px; }
    .chess-counter__grid p, .chess-member__grid p, .chess-hardware__grid p { font-size: 12px; line-height: 1.6; }
    .chess-member__grid h3 { margin: 22px 0 7px; font-size: 17px; }

    .chess-order__layout { gap: 36px; }
    .chess-order__visual figcaption { right: 13px; bottom: 13px; left: 13px; padding: 12px; font-size: 11px; }
    .chess-order__copy ul { gap: 10px; margin-top: 24px; }
    .chess-order__copy li { padding: 14px; }

    .chess-management__columns { margin-top: 34px; }
    .chess-management__columns article { padding: 20px 16px; border-radius: 18px; }
    .chess-management__columns h3 { min-height: 0; margin: 20px 0; font-size: 17px; }
    .chess-management__columns li { padding: 6px 8px; font-size: 11px; }

    .chess-hardware__media { height: 126px; border-radius: 12px; }
    .chess-hardware__grid h3 { margin: 18px 0 8px; font-size: 15px; }

    .chess-news__head { align-items: flex-start; flex-direction: column; gap: 18px; margin-bottom: 30px; }
    .chess-news__card { border-radius: 17px; }
    .chess-news__body { padding: 15px; }
    .chess-news__body h3 { min-height: 64px; margin: 10px 0; font-size: 14px; line-height: 1.48; }
    .chess-news__body h3 a { -webkit-line-clamp: 3; }
    .chess-news__body p { min-height: 0; margin-bottom: 12px; font-size: 11px; -webkit-line-clamp: 2; }
    .chess-news__more { font-size: 11px; }

    .chess-faq summary { padding: 20px 45px 20px 0; font-size: 15px; }
    .chess-faq summary::after { top: 16px; }
    .chess-faq details p { margin-right: 36px; font-size: 12px; }
    .chess-cta { padding: 54px 0; }
    .chess-cta h2 { margin: 13px auto 24px; font-size: 29px; }
}

@media (max-width: 640px) {
    .chess-local-nav { top: 60px; }
}

@media (max-width: 520px) {
    .chess-shell { width: calc(100% - 28px); }
    .chess-hero { min-height: 480px; }
    .chess-hero__inner { padding: 26px 0 22px; }
    .chess-hero h1 { font-size: 30px; }
    .chess-hero__actions { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
    .chess-hero__actions .chess-button { width: 100%; padding: 0 10px; }
    .chess-order__copy ul { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .chess-news__meta time, .chess-news__body p { display: none; }
    .chess-news__body h3 { min-height: 64px; }
    .chess-management__columns article:last-child { grid-column: 1 / -1; }
}

@media (max-width: 370px) {
    .chess-hero { min-height: 510px; }
    .chess-hero__actions { grid-template-columns: 1fr; }
    .chess-scenes__grid, .chess-capability__grid, .chess-counter__grid, .chess-member__grid, .chess-hardware__grid, .chess-news__grid { grid-template-columns: 1fr; }
    .chess-management__columns { grid-template-columns: 1fr; }
    .chess-management__columns article:last-child { grid-column: auto; }
    .chess-capability__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (prefers-reduced-motion: reduce) {
    .chess-page *, .chess-page *::before, .chess-page *::after { scroll-behavior: auto !important; transition: none !important; }
}