.sej-site-header { background: rgba(255,255,255,.97); border-bottom: 1px solid var(--sej-line); position: sticky; top: 0; z-index: 100; }
.admin-bar .sej-site-header { top: 32px; }
.sej-header-inner { align-items: center; display: flex; justify-content: space-between; min-height: 82px; }
.sej-brand { align-items: center; color: var(--sej-ink); display: inline-flex; gap: 12px; text-decoration: none; }
.sej-brand-logo { align-items: center; display: inline-flex; height: 58px; justify-content: center; width: 58px; }
.sej-brand-logo img { display: block; height: 58px; object-fit: contain; width: 58px; }
.sej-brand strong, .sej-brand small { display: block; }
.sej-brand strong { font-size: 15px; letter-spacing: .08em; }
.sej-brand small { color: var(--sej-muted); font-size: 12px; }
.sej-site-nav { align-items: center; display: flex; gap: 26px; }
.sej-site-nav a { color: var(--sej-ink); font-size: 14px; font-weight: 750; text-decoration: none; }
.sej-site-nav a:hover { color: var(--sej-green); }
.sej-site-nav .sej-nav-cta { background: var(--sej-green); border-radius: 7px; color: #fff; padding: 10px 18px; }
.sej-menu-button { background: transparent; border: 0; display: none; height: 50px; padding: 7px; width: 54px; }
.sej-menu-button span { background: var(--sej-ink); display: block; height: 2px; margin: 5px auto; width: 25px; }
.sej-menu-button em { display: block; font-size: 9px; font-style: normal; }

.sej-hero { background: linear-gradient(120deg, #fff 0 60%, #e9f5ec 60% 100%); border-bottom: 1px solid var(--sej-line); overflow: hidden; }
.sej-hero-inner { align-items: center; display: grid; gap: 55px; grid-template-columns: minmax(0, 1.35fr) minmax(300px, .65fr); min-height: 460px; padding-bottom: 70px; padding-top: 70px; position: relative; }
.sej-hero-inner::after { border: 58px solid rgba(243,146,0,.1); border-radius: 50%; content: ""; height: 240px; position: absolute; right: -100px; top: -100px; width: 240px; }
.sej-eyebrow, .sej-kicker, .sej-intro-heading > p, .sej-section-heading p { color: var(--sej-green); font-size: 12px; font-weight: 850; letter-spacing: .15em; margin: 0 0 9px; text-transform: uppercase; }
.sej-hero h1 { font-size: clamp(30px, 3.8vw, 48px); letter-spacing: -.035em; line-height: 1.35; margin: 0 0 24px; max-width: 820px; white-space: nowrap; }
.sej-hero-copy > p:not(.sej-eyebrow) { color: var(--sej-muted); font-size: 17px; margin: 0; max-width: 720px; }
.sej-hero-links, .sej-actions { align-items: center; display: flex; flex-wrap: wrap; gap: 18px; margin-top: 30px; }
.sej-button { background: var(--sej-green); border: 0; border-radius: 8px; color: #fff !important; display: inline-flex; font-size: 15px; font-weight: 800; justify-content: center; min-height: 48px; padding: 11px 22px; text-align: center; text-decoration: none; transition: transform .16s ease, background .16s ease; }
.sej-button:hover { background: var(--sej-green-dark); transform: translateY(-1px); }
.sej-button--orange, .sej-button--secondary, .sej-button--outline { background: var(--sej-green); border: 1px solid var(--sej-green); color: #fff !important; }
.sej-button--orange:hover, .sej-button--secondary:hover, .sej-button--outline:hover { background: var(--sej-green-dark); }
.sej-button--outline { min-height: 40px; padding: 7px 17px; }
.sej-text-link { font-weight: 750; text-underline-offset: 4px; }
.sej-hero-guide { display: grid; gap: 12px; grid-template-columns: repeat(3, minmax(0, 1fr)); position: relative; z-index: 1; }
.sej-hero-guide span { align-items: center; aspect-ratio: 1.5; background: #fff; border: 1px solid var(--sej-line); border-radius: 14px; box-shadow: var(--sej-shadow); color: var(--sej-orange); display: flex; flex-direction: column; font-size: 27px; font-weight: 900; justify-content: center; }
.sej-hero-guide small { color: var(--sej-ink); font-size: clamp(10px, 1.2vw, 13px); letter-spacing: .08em; line-height: 1.35; overflow-wrap: anywhere; text-align: center; }

.sej-product-selector { background: #fff; padding: 76px 0; }
.sej-intro-heading { margin-bottom: 32px; }
.sej-intro-heading h1, .sej-intro-heading h2 { font-size: clamp(27px, 4vw, 38px); line-height: 1.35; margin: 0 0 10px; }
.sej-intro-heading > span { color: var(--sej-muted); }
.sej-product-cards { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.sej-product-card { align-items: center; background: #fff; border: 2px solid var(--sej-line); border-radius: 14px; color: var(--sej-ink); cursor: pointer; display: grid; gap: 20px; grid-template-columns: 130px 1fr 28px; min-height: 170px; padding: 18px; position: relative; text-align: left; text-decoration: none; transition: border .16s ease, box-shadow .16s ease, transform .16s ease; width: 100%; }
.sej-product-card:hover, .sej-product-card.is-active { border-color: var(--sej-green); box-shadow: var(--sej-shadow); transform: translateY(-2px); }
.sej-product-card__image { align-items: center; background: var(--sej-bg); border-radius: 10px; display: flex; height: 130px; justify-content: center; padding: 10px; }
.sej-product-card__image img { max-height: 110px; object-fit: contain; }
.sej-product-card__body strong, .sej-product-card__body small, .sej-product-card__body span { display: block; }
.sej-product-card__body strong { font-size: 18px; line-height: 1.35; }
.sej-product-card__body small { color: var(--sej-green); font-weight: 750; margin-top: 4px; }
.sej-product-card__body span { color: var(--sej-muted); font-size: 13px; line-height: 1.65; margin-top: 8px; }
.sej-product-card__check { align-items: center; background: var(--sej-line); border-radius: 50%; color: #fff; display: flex; font-weight: 900; height: 26px; justify-content: center; width: 26px; }
.sej-product-card.is-active .sej-product-card__check { background: var(--sej-green); }

.sej-product-content { padding-bottom: 90px; padding-top: 70px; position: relative; }
.sej-product-content--single { padding-top: 20px; }
.sej-anchor { display: block; position: absolute; top: -95px; }
.sej-selected-product { align-items: center; background: linear-gradient(110deg, #fff, #f0f8f2); border-left: 7px solid var(--sej-green); border-radius: 14px; box-shadow: var(--sej-shadow); display: grid; gap: 40px; grid-template-columns: 260px 1fr; margin-bottom: 70px; padding: 34px 44px; }
.sej-selected-product__image { align-items: center; display: flex; height: 220px; justify-content: center; }
.sej-selected-product__image img { max-height: 210px; object-fit: contain; }
.sej-selected-product h2 { font-size: clamp(26px, 4vw, 40px); line-height: 1.3; margin: 0 0 8px; }
.sej-model { color: var(--sej-green); font-weight: 750; }
.sej-content-tabs { background: #fff; border: 1px solid var(--sej-line); border-radius: 12px; display: grid; gap: 0; grid-template-columns: repeat(3, 1fr); margin-bottom: 34px; overflow: hidden; position: sticky; top: 94px; z-index: 30; }
.admin-bar .sej-content-tabs { top: 126px; }
.sej-content-tabs button { align-items: center; background: #fff; border: 0; border-right: 1px solid var(--sej-line); color: var(--sej-ink); cursor: pointer; display: flex; font-weight: 800; gap: 9px; justify-content: center; min-height: 64px; padding: 10px 14px; }
.sej-content-tabs button:last-child { border-right: 0; }
.sej-content-tabs button span { color: var(--sej-orange); font-size: 12px; }
.sej-content-tabs button:hover { background: #f2f8f3; }
.sej-content-tabs button.is-active, .sej-content-tabs button[aria-selected="true"] { background: var(--sej-green); color: #fff; }
.sej-content-tabs button.is-active span, .sej-content-tabs button[aria-selected="true"] span { color: #fff; }
.sej-content-section { margin: 0 0 42px; min-height: 260px; scroll-margin-top: 180px; }
.sej-section-heading { align-items: center; border-bottom: 2px solid var(--sej-line); display: flex; gap: 18px; margin-bottom: 28px; padding-bottom: 18px; }
.sej-section-heading > span { align-items: center; background: var(--sej-green); border-radius: 50%; color: #fff; display: flex; font-size: 13px; font-weight: 900; height: 44px; justify-content: center; width: 44px; }
.sej-section-heading p { margin: 0; }
.sej-section-heading h2 { font-size: clamp(25px, 3vw, 34px); line-height: 1.25; margin: 0; }
.sej-section-manuals { scroll-margin-top: 100px; }
.sej-card-grid, .sej-video-grid { display: grid; gap: 22px; }
.sej-card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.sej-video-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.sej-info-card, .sej-video-card, .sej-trouble-card { background: #fff; border: 1px solid var(--sej-line); border-radius: 12px; box-shadow: 0 7px 22px rgba(30,52,42,.05); overflow: hidden; padding: 28px; }
.sej-info-card { display: flex; flex-direction: column; }
.sej-info-card h3, .sej-video-card h3, .sej-trouble-card h3 { font-size: 20px; line-height: 1.45; margin: 10px 0; }
.sej-info-card p, .sej-video-card p, .sej-trouble-card p { color: var(--sej-muted); }
.sej-info-card .sej-button { align-self: flex-start; margin-top: auto; }
.sej-card-icon { align-items: center; background: #fff0ec; border-radius: 7px; color: var(--sej-red); display: inline-flex; font-size: 12px; font-weight: 900; height: 38px; justify-content: center; width: 48px; }
.sej-pdf-list { display: grid; gap: 28px; }
.sej-pdf-card { display: block; padding: 30px; }
.sej-pdf-viewer { background: #edf1ef; border: 1px solid var(--sej-line); border-radius: 10px; margin-top: 24px; overflow: hidden; }
.sej-pdf-viewer iframe { border: 0; display: block; height: clamp(560px, 72vh, 880px); width: 100%; }
.sej-pdf-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 18px; }
.sej-pdf-card .sej-pdf-actions .sej-button { margin-top: 0; }
.sej-manual-list { background: #fff; border-bottom: 1px solid var(--sej-line); border-top: 1px solid var(--sej-line); }
.sej-manual-row { align-items: center; border-bottom: 1px solid var(--sej-line); display: grid; gap: 18px; grid-template-columns: 44px 1fr auto; padding: 22px 8px; }
.sej-manual-row:last-child { border-bottom: 0; }
.sej-manual-row h3 { color: var(--sej-muted); font-size: 16px; font-weight: 650; margin: 0; }
.sej-manual-row__icon { color: var(--sej-red); font-size: 10px; font-weight: 900; }
.sej-video-card { padding: 0; }
.sej-video { aspect-ratio: 16/9; background: #111; }
.sej-video iframe { border: 0; height: 100%; width: 100%; }
.sej-video-open-sp { display: none; }
.sej-video-card__body { padding: 22px 25px 25px; }
.sej-empty { background: #fff; border: 1px dashed #bdc8cd; border-radius: 10px; color: var(--sej-muted); padding: 25px; text-align: center; }

.sej-accordion { background: #fff; border: 1px solid var(--sej-line); border-radius: 10px; margin-bottom: 12px; overflow: hidden; }
.sej-accordion button { align-items: center; background: #fff; border: 0; color: var(--sej-ink); cursor: pointer; display: grid; gap: 10px; grid-template-columns: 1fr 30px; padding: 21px 24px; text-align: left; width: 100%; }
.sej-accordion button small { color: var(--sej-green); font-size: 11px; font-weight: 800; grid-column: 1 / -1; letter-spacing: .08em; }
.sej-accordion button span { font-size: 16px; font-weight: 750; }
.sej-accordion button span b { color: var(--sej-orange); font-size: 20px; margin-right: 12px; }
.sej-accordion button i { font-size: 24px; font-style: normal; transition: transform .15s ease; }
.sej-accordion button[aria-expanded="true"] i { transform: rotate(45deg); }
.sej-accordion [data-faq-panel], .sej-accordion > div { background: #f7faf8; border-top: 1px solid var(--sej-line); padding: 22px 25px; }
.sej-accordion > div b { color: var(--sej-green); float: left; font-size: 20px; margin-right: 12px; }
.sej-accordion > div p { margin: 0; overflow: hidden; }
.sej-trouble-grid { display: grid; gap: 20px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.sej-trouble-card { border-top: 5px solid var(--sej-orange); }
.sej-trouble-card > div { border-top: 1px solid var(--sej-line); margin-top: 16px; padding-top: 14px; }
.sej-trouble-card > div strong { color: var(--sej-green-dark); }
.sej-trouble-card .sej-related { background: var(--sej-bg); border-radius: 6px; font-size: 13px; padding: 10px 12px; }
.sej-inline-cta { align-items: center; background: #fff; border: 1px solid var(--sej-line); border-radius: 12px; display: flex; gap: 25px; justify-content: space-between; margin-top: 28px; padding: 24px 28px; }
.sej-inline-cta strong { font-size: 18px; }
.sej-inline-cta p { color: var(--sej-muted); margin: 2px 0 0; }
.sej-section-videos { scroll-margin-top: 100px; }
.sej-section-faqs { scroll-margin-top: 100px; }
.sej-section-troubles { scroll-margin-top: 100px; }
.sej-section-troubles .sej-section-heading { margin-bottom: 12px; }
.sej-section-troubles .sej-section-heading + .sej-section-lead { margin-bottom: 26px; }

.sej-site-footer { background: #25312b; color: #fff; padding: 52px 0 24px; }
.sej-footer-grid { display: flex; gap: 35px; justify-content: space-between; }
.sej-footer-grid strong { font-size: 18px; }
.sej-footer-grid p { color: #bcc7c1; }
.sej-footer-grid nav { display: flex; flex-wrap: wrap; gap: 22px; }
.sej-footer-grid a { color: #fff; }
.sej-footer-bottom { border-top: 1px solid rgba(255,255,255,.15); color: #aebbb4; display: flex; font-size: 12px; justify-content: space-between; margin-top: 30px; padding-top: 20px; }
.sej-page { padding-bottom: 90px; padding-top: 70px; }
.sej-page h1 { font-size: clamp(30px, 5vw, 46px); }
.sej-single-head { padding-top: 36px; }
.sej-back-link { font-weight: 750; }
.sej-product-cards--archive { margin-top: 36px; }

@media (max-width: 900px) {
  .admin-bar .sej-site-header { top: 46px; }
  .sej-menu-button { display: block; }
  .sej-site-nav { background: #fff; border-bottom: 1px solid var(--sej-line); box-shadow: var(--sej-shadow); display: none; flex-direction: column; gap: 0; left: 0; padding: 14px 28px 24px; position: absolute; right: 0; top: 100%; }
  .sej-site-nav.is-open { display: flex; }
  .sej-site-nav a { border-bottom: 1px solid var(--sej-line); padding: 13px 4px; width: 100%; }
  .sej-site-nav .sej-nav-cta { margin-top: 12px; text-align: center; }
  .sej-hero-inner { grid-template-columns: 1fr; }
  .sej-hero-guide { max-width: 520px; }
  .sej-selected-product { grid-template-columns: 200px 1fr; padding: 28px; }
  .sej-content-tabs { top: 82px; }
  .admin-bar .sej-content-tabs { top: 128px; }
  .sej-content-tabs button { align-content: center; flex-direction: column; font-size: 12px; gap: 1px; min-height: 66px; }
}

@media (max-width: 680px) {
  .sej-shell { padding-left: 18px; padding-right: 18px; }
  .sej-header-inner { min-height: 70px; }
  .sej-brand-logo, .sej-brand-logo img { height: 48px; width: 48px; }
  .sej-brand strong { font-size: 13px; }
  .sej-brand small { font-size: 10px; }
  .sej-hero { background: linear-gradient(165deg, #fff 0 72%, #e9f5ec 72%); }
  .sej-hero-inner { gap: 36px; min-height: auto; padding-bottom: 48px; padding-top: 48px; }
  .sej-hero-copy > p:not(.sej-eyebrow) { font-size: 15px; }
  .sej-hero h1 { font-size: clamp(19px, 5.2vw, 30px); }
  .sej-product-selector { padding: 55px 0; }
  .sej-product-card { gap: 14px; grid-template-columns: 92px 1fr 24px; min-height: 130px; padding: 14px; }
  .sej-product-card__image { height: 92px; }
  .sej-selected-product { display: block; margin-bottom: 58px; padding: 24px 20px; }
  .sej-selected-product__image { height: 180px; margin-bottom: 20px; }
  .sej-product-content { padding-top: 48px; }
  .sej-content-tabs { grid-template-columns: repeat(3, 1fr); position: static; }
  .sej-card-grid, .sej-trouble-grid { grid-template-columns: 1fr; }
  .sej-video-grid { gap: 12px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sej-video { position: relative; }
  .sej-video iframe { pointer-events: none; }
  .sej-video-open-sp { align-items: flex-end; display: flex; inset: 0; justify-content: center; padding: 10px; position: absolute; text-decoration: none; z-index: 2; }
  .sej-video-open-sp span { background: rgba(0, 128, 0, .94); border-radius: 999px; color: #fff; font-size: 12px; font-weight: 800; padding: 7px 14px; }
  .sej-video-card__body { padding: 15px; }
  .sej-video-card__body h3 { font-size: 16px; }
  .sej-video-card__body p { font-size: 12px; line-height: 1.6; }
  .sej-content-section { margin-bottom: 62px; }
  .sej-info-card { padding: 22px; }
  .sej-pdf-card { padding: 18px; }
  .sej-pdf-viewer iframe { height: 68vh; min-height: 480px; }
  .sej-pdf-actions .sej-button { width: 100%; }
  .sej-manual-row { gap: 10px; grid-template-columns: 34px 1fr; padding: 18px 4px; }
  .sej-manual-row .sej-button { grid-column: 1 / -1; width: 100%; }
  .sej-inline-cta, .sej-footer-grid { align-items: stretch; flex-direction: column; }
  .sej-inline-cta .sej-button { width: 100%; }
  .sej-footer-grid nav { flex-direction: column; gap: 12px; }
}

@media (max-width: 420px) {
  .sej-brand small { display: none; }
  .sej-hero-guide span { font-size: 22px; }
  .sej-hero-guide small { font-size: clamp(9px, 2.8vw, 12px); letter-spacing: .03em; }
  .sej-section-heading { gap: 12px; }
  .sej-section-heading > span { height: 38px; width: 38px; }
}