@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700;800;900&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  --ink: #101716;
  --ink-soft: #1b2825;
  --paper: #f4f1ea;
  --paper-2: #e9eee7;
  --white: #fffdfa;
  --accent: #ed6b4f;
  --accent-dark: #c94d37;
  --mint: #b9d9c2;
  --line: rgba(16, 23, 22, .16);
  --muted: #6f7b73;
  --shadow: 0 18px 50px rgba(16, 23, 22, .12);
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: clip; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: 'Noto Sans SC', system-ui, sans-serif; line-height: 1.6; overflow-x: hidden; }
body.no-scroll { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
img { display: block; max-width: 100%; }

.container { width: min(var(--max), calc(100% - 64px)); margin: 0 auto; }
.eyebrow { display: flex; align-items: center; gap: 12px; color: var(--accent); font: 700 12px/1 'Space Grotesk', sans-serif; letter-spacing: .18em; text-transform: uppercase; }
.eyebrow::before { content: ''; width: 34px; height: 2px; background: currentColor; }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 50px; }
.section-heading h2 { margin: 0; font: 800 68px/.98 'Space Grotesk', 'Noto Sans SC', sans-serif; letter-spacing: 0; }
.section-heading h2 span { display: block; color: var(--accent); font-family: 'Noto Sans SC', sans-serif; font-size: .28em; letter-spacing: .16em; margin-top: 16px; }
.section-heading p { max-width: 340px; margin: 0; color: var(--muted); font-size: 14px; }
.section-heading.light h2, .section-heading.light p { color: var(--white); }
.section-heading.light h2 span { color: var(--mint); }

/* Header */
.site-header { position: fixed; z-index: 20; top: 0; left: 0; right: 0; color: var(--white); border-bottom: 1px solid transparent; transition: background .3s ease, color .3s ease, border-color .3s ease; }
.site-header.scrolled { background: rgba(16, 23, 22, .96); border-color: rgba(255,255,255,.12); }
.header-inner { height: 84px; display: flex; align-items: center; justify-content: space-between; gap: 28px; width: min(var(--max), calc(100% - 64px)); margin: auto; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-size: 19px; font-weight: 900; letter-spacing: .04em; white-space: nowrap; }
.brand-mark { width: 31px; height: 31px; border: 3px solid currentColor; display: grid; place-items: center; transform: rotate(45deg); }
.brand-mark::after { content: ''; width: 10px; height: 10px; background: var(--accent); }
.brand span { color: var(--mint); }
.main-nav { display: flex; align-items: center; gap: clamp(10px, 1.5vw, 22px); margin-left: auto; }
.main-nav a { position: relative; color: rgba(255,255,255,.75); font-size: 12px; font-weight: 600; white-space: nowrap; transition: color .25s ease; }
.main-nav a::after { content: ''; position: absolute; left: 0; right: 0; bottom: -11px; height: 2px; background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform .25s ease; }
.main-nav a:hover, .main-nav a.active { color: var(--white); }
.main-nav a:hover::after, .main-nav a.active::after { transform: scaleX(1); }
.header-contact { display: inline-flex; align-items: center; gap: 8px; border-left: 1px solid rgba(255,255,255,.2); padding-left: 25px; color: var(--mint); font: 600 13px 'Space Grotesk', sans-serif; }
.mobile-toggle { display: none; width: 42px; height: 42px; border: 1px solid rgba(255,255,255,.28); background: transparent; color: currentColor; }
.mobile-toggle span { display: block; width: 17px; height: 1px; background: currentColor; margin: 4px auto; transition: transform .25s ease; }
.mobile-toggle.open span:first-child { transform: translateY(5px) rotate(45deg); }
.mobile-toggle.open span:nth-child(2) { opacity: 0; }
.mobile-toggle.open span:last-child { transform: translateY(-5px) rotate(-45deg); }
.mobile-nav { display: none; }

/* Hero */
.hero { position: relative; min-height: min(820px, 100vh); min-height: 760px; background: var(--ink); color: var(--white); overflow: hidden; }
.hero-slides, .hero-slide { position: absolute; inset: 0; }
.hero-slide { opacity: 0; visibility: hidden; background-size: cover; background-position: center 42%; transition: opacity 1s ease, visibility 1s ease; }
.hero-slide::before { content: ''; position: absolute; inset: 0; background: rgba(9, 16, 15, .68); }
.hero-slide.active { opacity: 1; visibility: visible; }
.hero-slide:nth-child(2) { background-position: center 58%; }
.hero-content { position: relative; z-index: 2; width: min(var(--max), calc(100% - 64px)); min-height: min(820px, 100vh); min-height: 760px; margin: auto; display: flex; flex-direction: column; justify-content: center; padding-top: 80px; }
.hero-copy { max-width: 760px; }
.hero-copy .eyebrow { color: var(--mint); margin-bottom: 28px; }
.hero h1 { margin: 0 0 24px; font: 800 104px/.98 'Noto Sans SC', sans-serif; letter-spacing: 0; }
.hero h1 em { color: var(--accent); font-style: normal; }
.hero-lead { max-width: 480px; color: rgba(255,255,255,.75); font-size: 16px; line-height: 1.9; }
.hero-actions { display: flex; align-items: center; gap: 24px; margin-top: 34px; }
.btn-primary, .btn-outline { display: inline-flex; align-items: center; gap: 22px; min-height: 50px; padding: 0 24px; border: 1px solid var(--accent); font-size: 13px; font-weight: 700; transition: background .25s ease, color .25s ease, transform .25s ease; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-2px); }
.btn-outline { border-color: rgba(255,255,255,.55); color: #fff; }
.btn-outline:hover { background: #fff; color: var(--ink); transform: translateY(-2px); }
.hero-pager { position: absolute; z-index: 3; right: max(32px, calc((100% - var(--max)) / 2)); bottom: 54px; display: flex; align-items: center; gap: 12px; }
.hero-dot { width: 38px; height: 3px; border: 0; padding: 0; background: rgba(255,255,255,.35); transition: background .25s ease, width .25s ease; }
.hero-dot.active { width: 74px; background: var(--accent); }
.hero-arrow { width: 42px; height: 42px; margin-left: 8px; border: 1px solid rgba(255,255,255,.3); color: #fff; background: transparent; font-size: 20px; }
.hero-arrow:hover { border-color: var(--accent); color: var(--accent); }
.hero-scroll { position: absolute; z-index: 3; left: max(32px, calc((100% - var(--max)) / 2)); bottom: 54px; display: inline-flex; align-items: center; gap: 12px; color: rgba(255,255,255,.65); font-size: 11px; letter-spacing: .18em; text-transform: uppercase; }
.hero-scroll::before { content: ''; width: 52px; height: 1px; background: currentColor; }

/* Sections */
.section { padding: 120px 0; }
.section.dark { background: var(--ink); color: var(--white); }
.section.soft { background: var(--paper-2); }
.products-section { padding-bottom: 128px; }
.category-tabs { position: relative; display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 36px; border-bottom: 1px solid var(--line); }
.category-tab { position: relative; border: 0; background: transparent; padding: 0 25px 18px; color: var(--muted); font-weight: 700; font-size: 14px; }
.category-tab::after { content: ''; position: absolute; left: 0; right: 0; bottom: -1px; height: 3px; background: var(--accent); transform: scaleX(0); transition: transform .25s ease; }
.category-tab:hover, .category-tab.active { color: var(--ink); }
.category-tab.active::after { transform: scaleX(1); }
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.product-card { background: var(--white); overflow: hidden; transition: transform .3s ease, box-shadow .3s ease; }
.product-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.product-card.is-hidden { display: none; }
.product-image { position: relative; aspect-ratio: 1 / 1.1; overflow: hidden; background: #d4e7dc; }
.product-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.product-card:hover .product-image img { transform: scale(1.07); }
.product-image::after { content: '查看系列  →'; position: absolute; inset: auto 14px 14px auto; padding: 8px 10px; color: #fff; background: var(--accent); font-size: 11px; opacity: 0; transform: translateY(8px); transition: opacity .25s ease, transform .25s ease; }
.product-card:hover .product-image::after { opacity: 1; transform: translateY(0); }
.product-body { padding: 20px 20px 24px; }
.product-body h3 { margin: 0 0 8px; font-size: 16px; }
.product-body p { margin: 0; color: var(--muted); font-size: 13px; }

.advantage-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: rgba(255,255,255,.18); }
.advantage-card { min-height: 286px; padding: 32px 28px; background: var(--ink); transition: background .3s ease, transform .3s ease; }
.advantage-card:hover { background: var(--accent-dark); transform: translateY(-6px); }
.advantage-icon { width: 45px; height: 45px; display: grid; place-items: center; border: 1px solid var(--mint); color: var(--mint); font: 700 18px 'Space Grotesk', sans-serif; margin-bottom: 52px; }
.advantage-card h3 { margin: 0 0 12px; font-size: 17px; }
.advantage-card p { margin: 0; color: rgba(255,255,255,.62); font-size: 13px; line-height: 1.8; }

.about-layout { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 8vw, 120px); align-items: center; overflow: clip; }
.about-copy h3 { margin: 0 0 22px; font-size: 42px; line-height: 1.25; }
.about-copy > p { color: var(--muted); font-size: 15px; line-height: 2; }
.about-copy .btn-primary { margin-top: 24px; }
.about-visual { position: relative; min-height: 480px; }
.about-visual img { width: 78%; height: 430px; object-fit: cover; margin-left: auto; }
.about-note { position: absolute; left: 0; bottom: 0; width: 210px; padding: 24px; background: var(--accent); color: #fff; }
.about-note strong { display: block; overflow-wrap: anywhere; font: 700 34px/1 'Space Grotesk', 'Noto Sans SC', sans-serif; }
.about-note span { display: block; margin-top: 11px; font-size: 12px; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 80px; padding-top: 36px; border-top: 1px solid var(--line); }
.stat strong { display: block; color: var(--accent); font: 700 52px/1 'Space Grotesk', 'Noto Sans SC', sans-serif; }
.stat span { display: block; margin-top: 8px; color: var(--muted); font-size: 13px; }

.logo-strip { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
.logo-tile { min-height: 100px; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.15); color: rgba(255,255,255,.68); font: 700 15px 'Space Grotesk', sans-serif; transition: border-color .25s ease, color .25s ease; }
.logo-tile:hover { border-color: var(--mint); color: var(--mint); }

.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.news-card { background: var(--white); transition: transform .3s ease; }
.news-card:hover { transform: translateY(-6px); }
.news-card img { width: 100%; aspect-ratio: 1.42; object-fit: cover; }
.news-card-body { padding: 22px; }
.news-date { color: var(--accent); font: 600 12px 'Space Grotesk', sans-serif; letter-spacing: .08em; }
.news-card h3 { margin: 12px 0 9px; font-size: 17px; line-height: 1.5; }
.news-card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }
.video-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.video-card { position: relative; padding: 0; border: 0; overflow: hidden; background: var(--white); color: var(--ink); text-align: left; transition: transform .3s ease, box-shadow .3s ease; }
.video-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.video-cover { position: relative; aspect-ratio: 16 / 9; overflow: hidden; background: var(--ink-soft); }
.video-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .45s ease; }
.video-card:hover .video-cover img { transform: scale(1.04); }
.video-cover::after { content: ''; position: absolute; inset: 0; background: rgba(9, 16, 15, .28); }
.video-play { position: absolute; z-index: 1; left: 24px; bottom: 22px; width: 56px; height: 56px; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.75); border-radius: 50%; background: rgba(16,23,22,.68); color: #fff; font-size: 18px; transition: background .25s ease, transform .25s ease; }
.video-card:hover .video-play { background: var(--accent); transform: scale(1.07); }
.video-status { position: absolute; z-index: 1; top: 18px; right: 18px; padding: 6px 9px; background: rgba(16,23,22,.78); color: rgba(255,255,255,.82); font-size: 11px; }
.video-card-body { padding: 22px 24px 26px; }
.video-card-body small { color: var(--accent); font: 700 11px 'Space Grotesk', sans-serif; letter-spacing: .12em; }
.video-card-body h3 { margin: 11px 0 8px; font-size: 19px; line-height: 1.45; }
.video-card-body p { margin: 0; color: var(--muted); font-size: 13px; }
.video-modal { position: fixed; z-index: 100; inset: 0; display: grid; place-items: center; padding: 28px; opacity: 0; visibility: hidden; transition: opacity .25s ease, visibility .25s ease; }
.video-modal.open { opacity: 1; visibility: visible; }
.video-modal-backdrop { position: absolute; inset: 0; background: rgba(5, 9, 8, .86); }
.video-dialog { position: relative; z-index: 1; width: min(920px, 100%); max-height: calc(100vh - 56px); overflow: auto; background: var(--white); box-shadow: 0 28px 90px rgba(0,0,0,.38); }
.video-close { position: absolute; z-index: 2; top: 12px; right: 12px; width: 42px; height: 42px; border: 0; background: rgba(16,23,22,.82); color: #fff; font-size: 27px; line-height: 1; }
.video-stage { aspect-ratio: 16 / 9; background: #090f0e; }
.video-stage iframe { width: 100%; height: 100%; border: 0; }
.video-pending { height: 100%; display: grid; place-content: center; gap: 10px; padding: 30px; color: #fff; text-align: center; }
.video-pending strong { font-size: 36px; }
.video-pending span { color: rgba(255,255,255,.6); font-size: 13px; }
.video-dialog-copy { padding: 24px 28px 28px; }
.video-dialog-copy small { color: var(--accent); font: 700 11px 'Space Grotesk', sans-serif; letter-spacing: .12em; }
.video-dialog-copy h2 { margin: 8px 0 5px; font-size: 25px; }
.video-dialog-copy p { margin: 0; color: var(--muted); font-size: 13px; }
.more-link { display: inline-flex; align-items: center; gap: 15px; margin-top: 38px; border-bottom: 1px solid var(--accent); padding-bottom: 8px; color: var(--accent); font-size: 13px; font-weight: 700; }
.more-link:hover { gap: 22px; }

.related-section { padding: 90px 0; background: #dde6de; }
.related-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 30px; }
.related-head h2 { margin: 0; font-size: 42px; line-height: 1.1; }
.related-head p { max-width: 360px; margin: 0; color: var(--muted); font-size: 13px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.related-card { min-height: 170px; display: flex; flex-direction: column; justify-content: space-between; padding: 24px; background: var(--white); border-top: 3px solid transparent; transition: transform .25s ease, border-color .25s ease; }
.related-card:hover { transform: translateY(-5px); border-color: var(--accent); }
.related-card small { color: var(--accent); font: 700 11px 'Space Grotesk', sans-serif; letter-spacing: .12em; }
.related-card strong { font-size: 19px; }
.related-card span { color: var(--muted); font-size: 13px; }
.faq-section { padding: 100px 0; }
.faq-layout { display: grid; grid-template-columns: .7fr 1.3fr; gap: 80px; }
.faq-intro h2 { margin: 14px 0 18px; font-size: 50px; line-height: 1.05; }
.faq-intro p { color: var(--muted); font-size: 14px; }
.faq-item { border-top: 1px solid var(--line); }
.faq-item:last-child { border-bottom: 1px solid var(--line); }
.faq-question { width: 100%; display: flex; justify-content: space-between; gap: 20px; padding: 22px 0; border: 0; background: transparent; color: var(--ink); text-align: left; font-weight: 700; }
.faq-question span:last-child { color: var(--accent); transition: transform .25s ease; }
.faq-item.open .faq-question span:last-child { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; color: var(--muted); font-size: 14px; line-height: 1.9; transition: max-height .3s ease; }
.faq-item.open .faq-answer { max-height: 220px; padding-bottom: 22px; }
.cta-band { margin-top: 70px; display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: center; padding: 36px 40px; background: var(--accent); color: #fff; }
.cta-band h3 { margin: 0 0 7px; font-size: 32px; }
.cta-band p { margin: 0; color: rgba(255,255,255,.78); font-size: 13px; }
.cta-band .btn-outline { min-width: 150px; justify-content: space-between; }
.page-trust { padding: 22px 0; background: var(--ink-soft); color: #fff; }
.page-trust .container { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; }
.trust-item { padding: 5px 20px; border-right: 1px solid rgba(255,255,255,.15); }
.trust-item:last-child { border: 0; }
.trust-item strong { display: block; color: var(--mint); font-size: 13px; }
.trust-item span { color: rgba(255,255,255,.55); font-size: 11px; }

.page-hero { position: relative; min-height: 420px; display: flex; align-items: end; padding: 0 0 70px; background: var(--ink) url('assets/hero.jpg') center 45% / cover; color: #fff; }
.page-hero::before { content: ''; position: absolute; inset: 0; background: rgba(9,16,15,.68); }
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 { margin: 22px 0 0; font-size: 80px; line-height: 1; letter-spacing: 0; }
.page-content { padding: 110px 0; }
.detail-layout { display: grid; grid-template-columns: 1.1fr .9fr; gap: 70px; align-items: start; overflow: clip; }
.detail-layout img { width: 100%; max-height: 540px; object-fit: cover; }
.detail-copy h2 { margin: 0 0 20px; font-size: 44px; line-height: 1.2; }
.contact-title { margin: 25px 0; font-size: 56px; line-height: 1.1; }
.detail-copy p { color: var(--muted); line-height: 2; font-size: 15px; }
.detail-copy ul { margin: 26px 0; padding: 0; list-style: none; }
.detail-copy li { padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
.detail-copy li::before { content: '↗'; margin-right: 12px; color: var(--accent); }

.form-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 80px; }
.contact-list { margin-top: 35px; }
.contact-item { display: flex; gap: 18px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.contact-item strong { min-width: 60px; font-size: 13px; }
.contact-item span { color: var(--muted); font-size: 14px; }
.form { padding: 36px; background: var(--white); box-shadow: var(--shadow); }
.form h2 { margin: 0 0 25px; font-size: 28px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
.field { margin-bottom: 15px; }
.field label { display: block; margin-bottom: 7px; color: var(--muted); font-size: 12px; }
.field input, .field textarea, .field select { width: 100%; border: 1px solid var(--line); background: transparent; padding: 13px 14px; outline: none; color: var(--ink); }
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--accent); }
.form .btn-primary { border: 0; margin-top: 4px; }
.form-message { min-height: 24px; margin: 15px 0 0; color: var(--accent-dark); font-size: 13px; }

.floating-tools { position: fixed; z-index: 15; right: 22px; bottom: 28px; display: flex; flex-direction: column; gap: 7px; }
.floating-tools a, .floating-tools button { width: 43px; height: 43px; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.2); background: var(--ink); color: #fff; font-size: 17px; transition: background .25s ease, color .25s ease; }
.floating-tools a:hover, .floating-tools button:hover { background: var(--accent); }
.floating-tools .back-top { opacity: 0; pointer-events: none; transform: translateY(8px); transition: opacity .25s ease, transform .25s ease; }
.floating-tools .back-top.show { opacity: 1; pointer-events: auto; transform: translateY(0); }

footer { padding: 70px 0 24px; background: #0a0f0e; color: #fff; }
.footer-top { display: grid; grid-template-columns: 1.2fr repeat(4, .8fr); gap: 32px; padding-bottom: 62px; }
.footer-brand p { max-width: 260px; margin: 24px 0 0; color: rgba(255,255,255,.5); font-size: 13px; line-height: 1.8; }
.footer-col h3 { margin: 0 0 20px; color: var(--mint); font-size: 13px; letter-spacing: .1em; }
.footer-col a, .footer-col p { display: block; margin: 0 0 10px; color: rgba(255,255,255,.55); font-size: 13px; }
.footer-col a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.12); color: rgba(255,255,255,.38); font-size: 12px; }

.reveal { opacity: 0; transform: translateY(28px); transition: opacity .75s ease, transform .75s ease; }
.reveal.from-left { transform: translateX(-28px); }
.reveal.from-right { transform: translateX(28px); }
.reveal.is-visible { opacity: 1; transform: none; }
.delay-1 { transition-delay: .1s; } .delay-2 { transition-delay: .2s; } .delay-3 { transition-delay: .3s; }

@media (max-width: 1320px) { .header-contact { display: none; } }
@media (max-width: 1120px) {
  .container, .header-inner, .hero-content { width: min(var(--max), calc(100% - 40px)); }
  .main-nav, .header-contact { display: none; }
  .section-heading h2 { font-size: 56px; }
  .hero h1 { font-size: 76px; }
  .page-hero h1 { font-size: 64px; }
  .mobile-toggle { display: block; }
  .mobile-nav { position: fixed; display: flex; flex-direction: column; gap: 0; top: 84px; left: 0; right: 0; padding: 12px 20px 24px; background: var(--ink); border-top: 1px solid rgba(255,255,255,.15); transform: translateY(-130%); transition: transform .3s ease; }
  .mobile-nav.open { transform: translateY(0); }
  .mobile-nav a { padding: 16px 0; border-bottom: 1px solid rgba(255,255,255,.1); color: rgba(255,255,255,.78); font-weight: 600; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .advantage-grid { grid-template-columns: repeat(2, 1fr); }
  .logo-strip { grid-template-columns: repeat(3, 1fr); }
  .related-grid { grid-template-columns: 1fr 1fr; }
  .faq-layout { grid-template-columns: 1fr; gap: 35px; }
}
@media (max-width: 680px) {
  .container, .header-inner, .hero-content { width: calc(100vw - 36px); max-width: calc(100vw - 36px); }
  .header-inner { height: 72px; }
  .mobile-nav { top: 72px; }
  .hero, .hero-content { min-height: 700px; }
  .hero h1 { max-width: 100%; overflow-wrap: anywhere; font-size: 42px; line-height: 1.04; }
  .hero-copy, .hero-lead { width: 100%; max-width: 100%; }
  .hero-lead { overflow-wrap: anywhere; font-size: 14px; }
  .hero-actions { align-items: stretch; flex-direction: column; width: 180px; gap: 10px; }
  .hero-pager { right: 18px; bottom: 39px; }
  .hero-pager .hero-arrow { display: none; }
  .hero-scroll { left: 18px; bottom: 34px; }
  .section { padding: 76px 0; }
  .section-heading { display: block; margin-bottom: 32px; }
  .section-heading h2 { font-size: 42px; }
  .section-heading p { margin-top: 20px; }
  .product-grid, .news-grid, .video-grid { grid-template-columns: 1fr; }
  .advantage-grid { grid-template-columns: 1fr; }
  .advantage-card { min-height: 230px; }
  .advantage-icon { margin-bottom: 30px; }
  .about-layout, .detail-layout, .form-layout { grid-template-columns: 1fr; gap: 44px; }
  .about-copy h3 { font-size: 32px; }
  .about-note strong { font-size: 30px; }
  .stat strong { font-size: 38px; }
  .page-hero h1 { font-size: 48px; }
  .detail-copy h2 { font-size: 32px; }
  .related-head h2 { font-size: 34px; }
  .faq-intro h2 { font-size: 40px; }
  .cta-band h3 { font-size: 26px; }
  .video-pending strong { font-size: 28px; }
  .contact-title { font-size: 38px; }
  .about-visual { min-height: 360px; }
  .about-visual img { height: 330px; }
  .stats { grid-template-columns: repeat(2, 1fr); margin-top: 55px; }
  .logo-strip { grid-template-columns: repeat(2, 1fr); }
  .form { padding: 24px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .related-head { display: block; }
  .related-head p { margin-top: 14px; }
  .related-grid { grid-template-columns: 1fr; }
  .cta-band { grid-template-columns: 1fr; padding: 28px 24px; }
  .page-trust .container { grid-template-columns: 1fr 1fr; gap: 18px 0; }
  .trust-item:nth-child(2) { border-right: 0; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 34px 20px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; }
  .floating-tools { right: 12px; bottom: 14px; }
  .floating-tools a, .floating-tools button { width: 38px; height: 38px; }
  .video-modal { padding: 12px; }
  .video-dialog { max-height: calc(100vh - 24px); }
  .video-card-body { padding: 18px 19px 22px; }
}

/* Document photography: preserve existing cards and reveal transitions. */
.document-photo { height: auto; }
.photo-link { display: block; overflow: hidden; background: var(--paper-2); }
.photo-link:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
.photo-gallery .photo-link img { display: block; height: auto; aspect-ratio: 4 / 3; object-fit: cover; transition: transform .4s ease; }
.photo-gallery .photo-link:hover img { transform: scale(1.025); }
.photo-gallery .photo-contain img { aspect-ratio: 3 / 4; object-fit: contain; background: #fff; }
.document-tools .product-image img { object-fit: contain; background: #f6f3e8; }
.document-tools .product-image::after { content: none; }

.form-trap{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}.form-consent{display:flex;align-items:flex-start;gap:10px;font-size:13px;line-height:1.8;margin:18px 0}.form-consent input{width:16px;height:16px;flex-shrink:0;margin-top:4px;accent-color:var(--accent)}.form-consent a{text-decoration:underline}.form button:disabled{opacity:.65;cursor:wait}.form-message[data-state="error"]{color:#b42318}.form-message[data-state="success"]{color:#236541}