:root {
  --quena-ink: #12191e;
  --quena-muted: #68747b;
  --quena-line: #d9e0e2;
  --quena-brand: #006f8e;
  --quena-brand-dark: #004f68;
  --quena-mist: #eef2f2;
  --quena-white: #fff;
  --quena-shell: min(1280px, calc(100vw - 96px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--quena-ink); background: var(--quena-white); font-family: Arial, "Microsoft YaHei", "PingFang SC", sans-serif; line-height: 1.65; }
body.menu-open { overflow: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
button { color: inherit; }
.site-shell { width: var(--quena-shell); margin-inline: auto; }
.screen-reader-text { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.screen-reader-text:focus { top: 8px; left: 8px; z-index: 100000; width: auto; height: auto; padding: 12px 18px; clip: auto !important; color: var(--quena-ink); background: #fff; }
:focus-visible { outline: 3px solid #f6b73c; outline-offset: 4px; }

.site-header { position: fixed; z-index: 100; top: 0; left: 0; width: 100%; color: #fff; transition: color .35s ease, background .35s ease, box-shadow .35s ease; }
.site-header::after { position: absolute; right: 0; bottom: 0; left: 0; height: 1px; background: rgba(255,255,255,.26); content: ""; }
.site-header.is-scrolled, body:not(.home) .site-header { color: var(--quena-ink); background: rgba(255,255,255,.97); box-shadow: 0 12px 34px rgba(13, 35, 45, .08); }
.site-header.is-scrolled::after, body:not(.home) .site-header::after { background: var(--quena-line); }
.header-inner { display: grid; grid-template-columns: 1fr auto auto; align-items: center; width: var(--quena-shell); height: 96px; margin-inline: auto; }
.brand-lockup { display: inline-flex; align-items: center; gap: 16px; line-height: 1; }
.brand-lockup > span:last-child { display: grid; gap: 5px; }
.brand-lockup strong { font-size: 24px; line-height: .86; letter-spacing: .13em; }
.brand-lockup small { font-size: 11px; font-weight: 700; letter-spacing: .46em; }
.brand-mark { position: relative; display: flex; align-items: flex-end; gap: 3px; width: 34px; height: 42px; padding: 7px 5px; background: var(--quena-brand); transform: skew(-8deg); }
.brand-mark i { display: block; width: 6px; background: #fff; transform: skew(8deg); }
.brand-mark i:nth-child(1) { height: 18px; }
.brand-mark i:nth-child(2) { height: 29px; }
.brand-mark i:nth-child(3) { height: 23px; }
.header-contact { display: grid; margin-right: 42px; line-height: 1.15; text-align: right; }
.header-contact span { margin-bottom: 6px; font-size: 10px; letter-spacing: .22em; opacity: .7; }
.header-contact a { font-size: 16px; font-weight: 700; letter-spacing: .05em; }
.menu-toggle { display: grid; align-content: center; gap: 6px; width: 58px; height: 58px; padding: 0 17px; border: 1px solid currentColor; background: transparent; cursor: pointer; }
.menu-toggle i { width: 100%; height: 2px; background: currentColor; transition: transform .3s ease, opacity .3s ease; }
.menu-open .menu-toggle i:nth-of-type(1) { transform: translateY(8px) rotate(45deg); }
.menu-open .menu-toggle i:nth-of-type(2) { opacity: 0; }
.menu-open .menu-toggle i:nth-of-type(3) { transform: translateY(-8px) rotate(-45deg); }
.site-navigation { position: fixed; z-index: -1; inset: 0; display: grid; align-items: center; padding: 130px max(48px, calc((100vw - 1280px)/2)); color: #fff; background: rgba(8, 19, 25, .98); opacity: 0; visibility: hidden; transform: translateY(-18px); transition: opacity .35s ease, visibility .35s ease, transform .35s ease; }
.menu-open .site-navigation { z-index: -1; opacity: 1; visibility: visible; transform: none; }
.primary-menu { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 8vw; max-width: 980px; padding: 0; margin: auto; list-style: none; }
.primary-menu li { border-bottom: 1px solid rgba(255,255,255,.18); }
.primary-menu a { display: block; padding: 22px 0; font-size: clamp(22px, 3vw, 43px); letter-spacing: .04em; }
.primary-menu a:hover { color: #7dd3e7; }

.home-hero { position: relative; height: 100svh; min-height: 680px; overflow: hidden; background: #14282f; }
.hero-slides, .hero-slide { position: absolute; inset: 0; }
.hero-slide { opacity: 0; visibility: hidden; transition: opacity 1.1s ease, visibility 1.1s ease; }
.hero-slide::after { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(2,13,18,.48) 0%, rgba(2,13,18,.04) 42%, rgba(2,13,18,.32) 100%); content: ""; }
.hero-slide.is-active { opacity: 1; visibility: visible; }
.hero-slide img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.045); transition: transform 7s ease; }
.hero-slide.is-active img { transform: scale(1); }
.hero-dots { position: absolute; z-index: 2; right: max(48px, calc((100vw - 1280px)/2)); bottom: 52px; display: flex; align-items: center; gap: 10px; }
.hero-dot { width: 34px; height: 2px; padding: 8px 0; border: 0; background: transparent; cursor: pointer; }
.hero-dot::after { display: block; width: 100%; height: 2px; background: rgba(255,255,255,.45); content: ""; }
.hero-dot.is-active::after { background: #fff; }
.hero-scroll { position: absolute; z-index: 2; bottom: 42px; left: max(48px, calc((100vw - 1280px)/2)); display: flex; align-items: center; gap: 14px; color: #fff; font-size: 11px; letter-spacing: .2em; }
.hero-scroll i { position: relative; width: 64px; height: 1px; background: rgba(255,255,255,.5); overflow: hidden; }
.hero-scroll i::after { position: absolute; width: 26px; height: 1px; background: #fff; content: ""; animation: quena-line 2.4s ease-in-out infinite; }
@keyframes quena-line { 0% { transform: translateX(-30px); } 70%, 100% { transform: translateX(68px); } }

.section-kicker { margin: 0 0 24px; color: var(--quena-brand); font-size: 11px; font-weight: 700; letter-spacing: .22em; }
.intro-section { padding-block: 150px 140px; }
.intro-section h1 { max-width: 1040px; margin: 0; font-size: clamp(38px, 5.1vw, 72px); font-weight: 500; line-height: 1.23; letter-spacing: -.045em; }
.intro-copy { max-width: 880px; margin: 48px 0 34px auto; color: #435058; font-size: clamp(18px, 1.8vw, 24px); line-height: 1.8; }
.text-link, .light-link { display: inline-flex; align-items: center; gap: 22px; padding-bottom: 8px; border-bottom: 1px solid currentColor; font-size: 14px; font-weight: 700; letter-spacing: .06em; }
.text-link { margin-left: calc(100% - 880px); color: var(--quena-brand); }
.text-link span, .light-link span { transition: transform .25s ease; }
.text-link:hover span, .light-link:hover span { transform: translateX(7px); }

.value-section { padding-block: 126px 118px; background: var(--quena-mist); }
.section-heading { max-width: 930px; }
.section-heading h2 { margin: 0; font-size: clamp(34px, 4vw, 58px); font-weight: 500; line-height: 1.25; letter-spacing: -.035em; }
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 86px; }
.value-grid article { min-height: 300px; padding: 6px 48px 6px 0; border-left: 1px solid #c4ced1; }
.value-grid article + article { padding-left: 48px; }
.value-grid article > span { color: var(--quena-brand); font-size: 12px; }
.value-grid h3 { margin: 76px 0 20px; font-size: 25px; font-weight: 600; }
.value-grid p { min-height: 82px; margin: 0 0 32px; color: var(--quena-muted); }
.value-grid a { color: var(--quena-brand); font-size: 13px; font-weight: 700; }

.products-section { padding-block: 144px 156px; }
.section-heading--row { display: flex; align-items: flex-end; justify-content: space-between; max-width: none; }
.section-heading--row > p { max-width: 520px; margin: 0 0 8px; color: var(--quena-muted); font-size: 17px; }
.product-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 84px 32px; margin-top: 80px; }
.product-image { display: block; height: clamp(300px, 33vw, 500px); margin-bottom: 28px; overflow: hidden; background: var(--quena-mist); }
.product-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .65s cubic-bezier(.2,.7,.2,1); }
.product-image:hover img { transform: scale(1.035); }
.product-item > p { margin: 0 0 10px; color: var(--quena-brand); font-size: 11px; font-weight: 700; letter-spacing: .14em; }
.product-item h3 { margin: 0 0 12px; font-size: 26px; font-weight: 600; }
.product-item > span { display: block; max-width: 560px; color: var(--quena-muted); }

.project-banner { position: relative; min-height: 760px; color: #fff; overflow: hidden; background: #102830; }
.project-banner > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.project-banner::after { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(1,17,23,.87), rgba(1,17,23,.42) 58%, rgba(1,17,23,.1)); content: ""; }
.project-content { position: relative; z-index: 1; display: flex; flex-direction: column; justify-content: center; min-height: 760px; }
.project-content .section-kicker { color: #8ad6e7; }
.project-content h2 { max-width: 760px; margin: 0 0 30px; font-size: clamp(42px, 5vw, 70px); font-weight: 500; line-height: 1.16; letter-spacing: -.04em; }
.project-content p:not(.section-kicker) { max-width: 610px; margin: 0 0 42px; color: rgba(255,255,255,.82); font-size: 18px; }
.light-link { align-self: flex-start; }

.factory-section { display: grid; grid-template-columns: 1.12fr .88fr; align-items: center; gap: 9vw; padding-block: 156px; }
.factory-image { height: 680px; overflow: hidden; }
.factory-image img { width: 100%; height: 100%; object-fit: cover; }
.factory-copy h2 { margin: 0 0 30px; font-size: clamp(37px, 4vw, 58px); font-weight: 500; line-height: 1.25; letter-spacing: -.035em; }
.factory-copy > p:not(.section-kicker) { margin: 0; color: var(--quena-muted); font-size: 17px; }
.factory-copy dl { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; margin: 54px 0 46px; }
.factory-copy dl div { padding-top: 22px; border-top: 1px solid var(--quena-line); }
.factory-copy dt { color: var(--quena-brand); font-size: 43px; font-weight: 600; line-height: 1; }
.factory-copy dd { margin: 12px 0 0; color: var(--quena-muted); font-size: 13px; }
.factory-copy .text-link, .news-section .text-link { margin-left: 0; }

.news-section { padding-block: 52px 145px; }
.news-list { margin-top: 70px; border-top: 1px solid var(--quena-line); }
.news-list article, .post-row { display: grid; grid-template-columns: 160px 1fr 42px; align-items: center; gap: 30px; padding: 33px 0; border-bottom: 1px solid var(--quena-line); }
.news-list time, .post-row time { color: var(--quena-muted); font-size: 12px; letter-spacing: .09em; }
.news-list h3, .post-row h2 { margin: 0; font-size: 20px; font-weight: 500; }
.news-arrow { display: grid; width: 42px; height: 42px; place-items: center; border: 1px solid var(--quena-line); color: var(--quena-brand); transition: color .25s ease, background .25s ease; }
.news-arrow:hover { color: #fff; background: var(--quena-brand); }

.contact-cta { padding-block: 94px; color: #fff; background: var(--quena-brand); }
.contact-cta .site-shell { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.contact-cta .section-kicker { color: rgba(255,255,255,.66); }
.contact-cta h2 { margin: 0 0 14px; font-size: clamp(35px, 4vw, 56px); font-weight: 500; }
.contact-cta p:not(.section-kicker) { margin: 0; color: rgba(255,255,255,.78); }
.contact-cta a { display: inline-flex; align-items: center; gap: 54px; min-width: 250px; padding: 20px 0; border-bottom: 1px solid rgba(255,255,255,.65); font-weight: 700; }

.site-footer { color: #dbe3e5; background: #11191e; }
.footer-main { display: grid; grid-template-columns: 1.3fr .8fr 1fr; gap: 8vw; padding-block: 94px 82px; }
.brand-lockup--footer { color: #fff; }
.footer-brand > p { max-width: 340px; margin: 32px 0 0; color: #819096; }
.site-footer h2 { margin: 0 0 27px; color: #829097; font-size: 11px; letter-spacing: .18em; }
.footer-menu { display: grid; gap: 10px; padding: 0; margin: 0; list-style: none; }
.footer-menu .sub-menu { display: none; }
.footer-menu a:hover, .footer-contact a:hover { color: #84d7e8; }
.footer-contact { display: grid; align-content: start; }
.footer-contact p { margin: 0 0 18px; color: #a4b0b4; }
.footer-phone { margin-top: 16px; color: #fff; font-size: 24px; font-weight: 600; }
.footer-bottom { display: flex; justify-content: space-between; padding-block: 24px; border-top: 1px solid #2a353b; color: #68777e; font-size: 12px; }
.footer-bottom p { margin: 0; }

.inner-main { min-height: 68vh; padding-top: 190px; padding-bottom: 130px; }
.archive-header, .entry-header { max-width: 960px; margin-bottom: 72px; }
.archive-header h1, .entry-header h1, .error-main h1 { margin: 0; font-size: clamp(42px, 5.2vw, 72px); font-weight: 500; line-height: 1.18; letter-spacing: -.04em; }
.archive-header > div { max-width: 720px; color: var(--quena-muted); }
.post-row > div > p { margin: 8px 0 0; color: var(--quena-muted); }
.entry-media { margin: 0 0 64px; }
.entry-media img { width: 100%; }
.entry-content { max-width: 840px; margin-inline: auto; font-size: 17px; }
.entry-content--wide { max-width: none; }
.entry-content h2, .entry-content h3 { margin-top: 2em; line-height: 1.35; }
.entry-content a { color: var(--quena-brand); text-decoration: underline; }
.entry-footer, .post-navigation, .comments-area { max-width: 840px; margin: 50px auto 0; }
.comment-list { padding-left: 24px; }
.comment-body { padding-block: 22px; border-bottom: 1px solid var(--quena-line); }
.comment-form label { display: block; margin-bottom: 8px; }
.comment-form input:not([type=submit]), .comment-form textarea, .search-field { width: 100%; padding: 12px; border: 1px solid var(--quena-line); border-radius: 0; }
.form-submit input, .search-form button, .solid-button { padding: 13px 24px; border: 0; color: #fff; background: var(--quena-brand); cursor: pointer; }
.search-form { display: flex; max-width: 600px; }
.search-form label { flex: 1; }
.error-main { min-height: 75vh; padding-top: 230px; padding-bottom: 120px; }
.error-main > p:not(.section-kicker) { margin: 25px 0 36px; color: var(--quena-muted); }
.error-actions { display: flex; align-items: center; gap: 25px; }
.error-actions .search-form { flex: 1; }
.pagination { margin-top: 44px; }
.nav-links { display: flex; gap: 10px; }
.page-numbers { padding: 8px 13px; border: 1px solid var(--quena-line); }
.page-numbers.current { color: #fff; background: var(--quena-brand); }

@media (max-width: 1000px) {
  :root { --quena-shell: min(100% - 48px, 1280px); }
  .header-contact { display: none; }
  .header-inner { grid-template-columns: 1fr auto; height: 78px; }
  .primary-menu { grid-template-columns: 1fr; }
  .intro-copy, .text-link { margin-left: 0; }
  .value-grid { grid-template-columns: 1fr; }
  .value-grid article, .value-grid article + article { min-height: 0; padding: 34px 0 38px; border-top: 1px solid #c4ced1; border-left: 0; }
  .value-grid h3 { margin-top: 20px; }
  .value-grid p { min-height: 0; }
  .factory-section { grid-template-columns: 1fr; gap: 60px; }
  .factory-image { height: min(70vw, 620px); }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 680px) {
  :root { --quena-shell: calc(100vw - 32px); }
  .brand-lockup { gap: 11px; }
  .brand-mark { width: 29px; height: 36px; }
  .brand-lockup strong { font-size: 20px; }
  .brand-lockup small { font-size: 9px; }
  .menu-toggle { width: 48px; height: 48px; padding-inline: 13px; }
  .site-navigation { padding: 100px 24px 30px; }
  .primary-menu a { padding: 13px 0; font-size: 24px; }
  .home-hero { min-height: 560px; }
  .hero-scroll { bottom: 28px; left: 16px; }
  .hero-dots { right: 16px; bottom: 36px; }
  .intro-section, .products-section, .factory-section { padding-block: 92px; }
  .intro-copy { margin-top: 32px; font-size: 17px; }
  .value-section { padding-block: 86px; }
  .value-grid { margin-top: 48px; }
  .section-heading--row { display: block; }
  .section-heading--row > p { margin-top: 25px; }
  .product-grid { grid-template-columns: 1fr; gap: 58px; margin-top: 52px; }
  .product-image { height: 72vw; }
  .project-banner, .project-content { min-height: 660px; }
  .factory-copy dl { gap: 14px; }
  .news-section { padding-bottom: 90px; }
  .news-list article, .post-row { grid-template-columns: 1fr 42px; gap: 15px; }
  .news-list time, .post-row time { grid-column: 1 / -1; }
  .contact-cta .site-shell { display: block; }
  .contact-cta a { margin-top: 38px; }
  .footer-main { grid-template-columns: 1fr; }
  .footer-brand { grid-column: auto; }
  .footer-bottom { display: block; }
  .footer-bottom a { display: block; margin-top: 8px; }
  .inner-main { padding-top: 140px; }
  .error-actions { align-items: stretch; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}