:root {
    --detail-ink: #09283c;
    --detail-muted: #5a7180;
    --detail-blue: #0077b2;
    --detail-deep: #062b42;
    --detail-line: #d8e3e8;
    --detail-mist: #f2f7f9;
}

* { box-sizing: border-box; }
body { margin: 0; color: var(--detail-ink); background: #fff; font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; }
.detail-shell { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }
.detail-breadcrumb { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; min-height: 70px; color: #7a8d98; font-size: 13px; }
.detail-breadcrumb a { color: #486677; text-decoration: none; }
.detail-breadcrumb a:hover { color: var(--detail-blue); }

.detail-hero { padding: 34px 0 92px; }
.detail-hero__grid { display: grid; grid-template-columns: minmax(0, .86fr) minmax(0, 1.14fr); gap: clamp(48px, 7vw, 100px); align-items: center; }
.detail-eyebrow { display: flex; gap: 12px; margin: 0 0 25px; color: var(--detail-blue); font-size: 12px; font-weight: 700; letter-spacing: .17em; text-transform: uppercase; }
.detail-hero h1 { margin: 0; font-size: clamp(38px, 5vw, 64px); font-weight: 650; line-height: 1.15; letter-spacing: -.04em; }
.detail-hero__intro { margin: 30px 0 36px; color: var(--detail-muted); font-size: 17px; line-height: 1.9; }
.detail-primary-link { display: inline-flex; gap: 18px; align-items: center; padding: 14px 0 9px; border-bottom: 1px solid currentColor; color: var(--detail-ink); font-size: 14px; font-weight: 650; text-decoration: none; }
.detail-primary-link:hover { color: var(--detail-blue); text-decoration: none; }
.detail-hero__media { position: relative; min-height: 520px; margin: 0; overflow: hidden; background: #d9e7ed; }
.detail-hero__media::before { content: ""; position: absolute; z-index: 1; inset: 22px; border: 1px solid rgba(255,255,255,.6); pointer-events: none; }
.detail-hero__media img { width: 100%; height: 520px; object-fit: cover; }

.detail-section { padding: 104px 0; background: var(--detail-mist); }
.detail-section__grid { display: grid; grid-template-columns: minmax(230px, .38fr) minmax(0, .62fr); gap: clamp(55px, 9vw, 130px); }
.detail-section__heading { position: relative; }
.detail-section__index { display: block; margin-bottom: 50px; color: #9eb1bc; font-size: 14px; letter-spacing: .12em; }
.detail-section__heading p { margin: 0 0 16px; color: var(--detail-blue); font-size: 11px; font-weight: 700; letter-spacing: .18em; }
.detail-section__heading h2 { margin: 0; font-size: clamp(30px, 4vw, 48px); font-weight: 650; }
.detail-list, .advantage-list { margin: 0; padding: 0; list-style: none; }
.detail-list { counter-reset: scope; }
.detail-list li { counter-increment: scope; display: grid; grid-template-columns: 54px 1fr; gap: 8px 20px; padding: 0 0 27px; margin: 0 0 27px; border-bottom: 1px solid var(--detail-line); }
.detail-list li::before { content: counter(scope, decimal-leading-zero); grid-row: 1 / span 2; color: #8ea4b0; font-size: 13px; letter-spacing: .08em; }
.detail-list h3 { margin: 0; font-size: 19px; font-weight: 650; line-height: 1.5; }
.detail-list p { margin: 0; color: var(--detail-muted); font-size: 15px; line-height: 1.8; }

.detail-gallery { padding: 104px 0; background: #fff; }
.detail-gallery__main { margin: 0; }
.detail-gallery__main img { width: 100%; height: clamp(360px, 56vw, 660px); object-fit: cover; background: #e1ebef; }
.detail-gallery__main figcaption { min-height: 52px; padding: 16px 0; color: var(--detail-muted); font-size: 13px; }
.detail-gallery__thumbs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.detail-gallery__thumb { display: block; padding: 0; border: 0; background: #dbe7ec; cursor: pointer; opacity: .58; transition: opacity .2s ease; }
.detail-gallery__thumb img { display: block; width: 100%; height: 115px; object-fit: cover; }
.detail-gallery__thumb:hover, .detail-gallery__thumb.is-active { opacity: 1; }
.detail-gallery__thumb.is-active { outline: 2px solid var(--detail-blue); outline-offset: 3px; }

.detail-section--blue { color: #fff; background: var(--detail-deep); }
.detail-section--blue .detail-section__index { color: #7295a8; }
.detail-section--blue .detail-section__heading p { color: #72cfff; }
.advantage-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 42px; }
.advantage-list li { position: relative; min-height: 110px; padding: 26px 0 25px 27px; border-top: 1px solid rgba(255,255,255,.18); color: rgba(255,255,255,.86); font-size: 15px; line-height: 1.8; }
.advantage-list li::before { content: ""; position: absolute; top: 34px; left: 0; width: 7px; height: 7px; border-radius: 50%; background: #59c8ff; }

.detail-cta { padding: 88px 0; background: #fff; }
.detail-cta__inner { display: flex; gap: 50px; align-items: center; justify-content: space-between; }
.detail-cta__eyebrow { margin: 0 0 14px; color: var(--detail-blue); font-size: 11px; font-weight: 700; letter-spacing: .18em; }
.detail-cta h2 { margin: 0; font-size: clamp(28px, 4vw, 44px); font-weight: 650; }
.detail-cta p:not(.detail-cta__eyebrow) { max-width: 720px; margin: 18px 0 0; color: var(--detail-muted); font-size: 16px; line-height: 1.8; }
.detail-cta__button { flex: 0 0 auto; display: inline-flex; gap: 22px; align-items: center; padding: 18px 24px; color: #fff; background: var(--detail-blue); text-decoration: none; }
.detail-cta__button:hover { color: #fff; background: #005f90; text-decoration: none; }
.detail-not-found { min-height: 55vh; padding: 100px 0; }
.detail-not-found h1 { font-size: 44px; }
.detail-not-found > .detail-shell > p:not(.detail-eyebrow) { color: var(--detail-muted); font-size: 17px; }

@media (max-width: 900px) {
    .detail-hero__grid, .detail-section__grid { grid-template-columns: 1fr; }
    .detail-hero { padding-bottom: 70px; }
    .detail-hero__media, .detail-hero__media img { min-height: 0; height: 62vw; }
    .detail-section { padding: 76px 0; }
    .detail-section__index { margin-bottom: 30px; }
    .advantage-list { grid-template-columns: 1fr; }
    .detail-cta__inner { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 560px) {
    .detail-shell { width: min(100% - 30px, 1180px); }
    .detail-breadcrumb { min-height: 58px; }
    .detail-hero { padding-top: 24px; }
    .detail-hero h1 { font-size: 37px; }
    .detail-hero__intro { font-size: 16px; }
    .detail-hero__media, .detail-hero__media img { height: 75vw; }
    .detail-section { padding: 60px 0; }
    .detail-list li { grid-template-columns: 38px 1fr; gap: 7px 12px; }
    .detail-gallery { padding: 66px 0; }
    .detail-gallery__main img { height: 72vw; }
    .detail-gallery__thumbs { grid-template-columns: repeat(3, 1fr); }
    .detail-gallery__thumb img { height: 76px; }
    .detail-cta { padding: 64px 0; }
    .detail-cta__button { width: 100%; justify-content: space-between; }
}

@media (prefers-reduced-motion: reduce) { .detail-gallery__thumb { transition: none; } }