/* 深海色作为统一底色；浅色区域只用于完整展示真实产品图片。 */
:root {
    color-scheme: dark;
    --background: #081d2b;
    --surface: #102936;
    --surface-raised: #183441;
    --text: #f1f5f4;
    --muted: #b8c9d0;
    --line: #36505c;
    --accent: #ffa383;
    --ink: #142734;
    --radius: 8px;
    --container: 1280px
}
* {
    box-sizing: border-box
}
html {
    scroll-behavior: smooth;
    scroll-padding-top: 104px
}
body {
    margin: 0;
    background: var(--background);
    color: var(--text);
    font-family: Arial,"Microsoft YaHei","PingFang SC","Noto Sans",sans-serif;
    font-size: 17px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased
}
a {
    color: inherit;
    text-decoration: none
}
button,summary,a {
    -webkit-tap-highlight-color: transparent
}
button,input,summary {
    font: inherit
}
button,summary {
    touch-action: manipulation
}
img {
    display: block;
    max-width: 100%;
    height: auto
}
h1,h2,h3,p {
    margin-top: 0
}
h1,h2,h3 {
    font-weight: 500;
    line-height: 1.14;
    letter-spacing: -.045em;
    overflow-wrap: break-word
}
h1 {
    font-size: clamp(2.6rem,5.9vw,5.8rem)
}
h2 {
    font-size: clamp(2rem,3.4vw,3.2rem);
    margin-bottom: 24px
}
h3 {
    font-size: 1.5rem;
    letter-spacing: -.025em
}
p {
    color: var(--muted)
}
ul,ol {
    padding-left: 1.3em
}
address {
    font-style: normal;
    color: var(--muted)
}
a:focus-visible,summary:focus-visible,button:focus-visible,[tabindex]:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 5px;
    border-radius: 3px
}
a:hover {
    color: var(--accent)
}
::selection {
    background: var(--accent);
    color: var(--ink)
}
.container {
    width: min(var(--container),calc(100% - 80px));
    margin-inline: auto
}
.section {
    padding-block: 88px
}
.section-heading {
    max-width: 780px;
    margin-bottom: 40px
}
.section-heading p {
    max-width: 600px;
    font-size: 1.1rem
}
.intro {
    font-size: 1.15rem;
    line-height: 1.65
}
.button-row {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap
}
.button {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 26px;
    min-height: 52px;
    padding: 13px 23px;
    border: 1px solid var(--accent);
    border-radius: var(--radius);
    background: var(--accent);
    color: var(--ink);
    font-size: .94rem;
    font-weight: 600;
    line-height: 1.35;
    text-align: center;
    transition: background-color .2s,transform .2s
}
.button:hover {
    background: #ffbb9e;
    color: var(--ink);
    border-color: #ffbb9e
}
.button:active {
    transform: translateY(1px)
}
.button-ghost {
    background: transparent;
    border-color: #72909e;
    color: var(--text);
    font-weight: 400
}
.button-ghost:hover {
    background: var(--surface-raised);
    color: var(--text);
    border-color: var(--muted)
}
.button-small {
    min-height: 43px;
    padding: 10px 19px;
    font-size: .88rem;
    white-space: nowrap
}
.whatsapp-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 44px;
    width: fit-content;
    font-size: .88rem;
    white-space: nowrap
}
.whatsapp-link svg {
    flex-shrink: 0
}
.whatsapp-link:hover {
    color: var(--accent)
}
.text-link {
    display: inline-flex;
    align-items: center;
    gap: 28px;
    color: var(--accent);
    padding-block: 8px;
    font-size: .96rem;
    border-bottom: 1px solid currentColor
}
.text-link:hover {
    color: #ffd5c6
}
.eyebrow {
    text-transform: uppercase;
    letter-spacing: .13em;
    font-size: .78rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 25px
}
.skip-link {
    position: fixed;
    top: 8px;
    left: 16px;
    z-index: 30;
    padding: 10px 18px;
    background: var(--accent);
    color: var(--ink);
    transform: translateY(-150%)
}
.skip-link:focus {
    transform: translateY(0)
}
.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgb(8 29 43 / .97);
    border-bottom: 1px solid rgb(130 160 175 / .2)
}
.header-inner {
    width: min(1440px,calc(100% - 64px));
    margin: auto;
    display: flex;
    align-items: center;
    min-height: 80px;
    gap: 44px
}
.brand {
    display: inline-flex;
    flex: none;
    align-items: center;
    min-width: 124px;
    max-width: 160px
}
.brand-image {
    width: 132px;
    max-height: 51px;
    object-fit: contain;
    filter: brightness(0) invert(1)
}
.brand-word {
    font-size: 37px;
    font-weight: 700;
    letter-spacing: -.07em;
    line-height: 1
}
.brand-word>span {
    font-size: 11px;
    vertical-align: top;
    letter-spacing: 0;
    padding-left: 5px
}
.main-navigation {
    flex: 1;
    min-width: 0
}
.main-navigation>summary {
    display: none
}
.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 28px
}
.nav-links,.header-tools {
    display: flex;
    align-items: center;
    gap: 28px
}
.nav-links {
    font-size: .92rem;
    line-height: 1.3
}
.nav-links>a {
    white-space: nowrap;
    padding-block: 25px
}
.header-tools {
    gap: 22px
}
.product-navigation,.language-navigation,.resources-navigation {
    position: relative
}
.product-navigation {
    position: static
}
.product-navigation>summary,.language-navigation>summary,.resources-navigation>summary {
    display: flex;
    align-items: center;
    gap: 11px;
    min-height: 44px;
    cursor: pointer;
    list-style: none;
    white-space: nowrap
}
.language-navigation>summary {
    font-size: .84rem
}
.product-navigation>summary::-webkit-details-marker,.language-navigation>summary::-webkit-details-marker,.resources-navigation>summary::-webkit-details-marker,.mobile-toggle::-webkit-details-marker {
    display: none
}
.product-navigation[open]>summary,.language-navigation[open]>summary,.resources-navigation[open]>summary {
    color: var(--accent)
}
.chevron {
    display: block;
    width: 7px;
    height: 7px;
    border-right: 1px solid currentColor;
    border-bottom: 1px solid currentColor;
    transform: translateY(-2px) rotate(45deg);
    transition: transform .2s
}
details[open]>summary>.chevron {
    transform: translateY(2px) rotate(225deg)
}
.mega-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    width: min(1280px,calc(100% - 64px));
    padding: 25px 28px 30px;
    background: #f3f6f5;
    color: var(--ink);
    border: 1px solid #d7e0df;
    border-radius: var(--radius);
    box-shadow: 0 18px 40px rgb(0 8 14 / .22);
    max-height: calc(100dvh - 110px);
    overflow: auto
}
.mega-overview {
    display: inline-block;
    font-size: .95rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: #0d506b;
    padding: 4px 0
}
.mega-columns {
    display: grid;
    grid-template-columns: repeat(6,minmax(0,1fr));
    gap: 20px
}
.mega-columns p {
    color: #1f5b70;
    font-size: .88rem;
    font-weight: 600;
    padding-bottom: 12px;
    margin-bottom: 8px;
    border-bottom: 1px solid #c6d4d8;
    line-height: 1.5
}
.mega-columns a {
    display: flex;
    align-items: center;
    min-height: 42px;
    padding: 7px 0;
    font-size: .87rem;
    line-height: 1.5
}
.mega-columns a:hover,.mega-overview:hover {
    color: #954228;
    text-decoration: underline
}
.mega-category {
    min-width: 0
}
.mega-columns p a {
    font: inherit;
    padding: 0;
    align-items: flex-start;
    overflow-wrap: anywhere
}
.mega-products a {
    overflow-wrap: anywhere
}
.language-list,.resources-list {
    position: absolute;
    right: 0;
    top: calc(100% + 17px);
    min-width: 180px;
    max-height: calc(100dvh - 110px);
    overflow: auto;
    background: #f3f6f5;
    color: var(--ink);
    padding: 12px;
    border: 1px solid #d7e0df;
    border-radius: var(--radius);
    box-shadow: 0 15px 35px rgb(0 8 14 / .2)
}
.language-list a,.resources-list a {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: 8px 14px;
    font-size: .9rem
}
.language-list a:hover,.resources-list a:hover {
    background: #e1e9e9;
    color: #0d506b
}
.language-list a[aria-current] {
    font-weight: 700;
    color: #0d506b;
    background: #e1e9e9
}
.resources-list {
    left: 0;
    right: auto;
    width: max-content;
    min-width: 240px;
    max-width: min(320px,calc(100vw - 48px))
}
.resources-list a {
    justify-content: space-between;
    gap: 20px;
    overflow-wrap: anywhere
}
.hero {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    min-height: 650px;
    display: flex;
    align-items: center
}
.hero-media {
    position: absolute;
    inset: 0 0 0 37%;
    z-index: -2
}
.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: 60% 50%
}
.hero-media:after {
    content: "";
    position: absolute;
    inset: -2px;
    background: linear-gradient(90deg,var(--background),rgb(8 29 43 / .65) 17%,rgb(8 29 43 / .04) 60%),linear-gradient(0deg,var(--background) 3%,transparent 24%)
}
.hero-inner {
    position: relative;
    padding-block: 80px 100px
}
.hero-copy {
    max-width: 665px;
    width: 55%
}
.hero h1 {
    max-width: 640px;
    margin-bottom: 28px;
    line-height: 1.02;
    letter-spacing: -.065em;
    text-wrap: balance
}
.hero-summary {
    max-width: 430px;
    font-size: 1.13rem;
    color: #d4e0e3;
    line-height: 1.6;
    margin-bottom: 35px
}
.category-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 26px
}
.category-tile {
    position: relative;
    display: grid;
    grid-template-columns: 46% 54%;
    min-height: 260px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--surface);
    transition: border-color .2s,transform .2s
}
.category-tile:hover {
    color: var(--text);
    border-color: #b8c9d0;
    transform: translateY(-3px)
}
.category-image {
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fff;
    overflow: hidden
}
.category-product {
    width: 100%;
    height: 230px;
    object-fit: contain;
    padding: 13px
}
.category-copy {
    display: flex;
    flex-direction: column;
    padding: 28px 26px 24px;
    position: relative
}
.category-copy h3 {
    font-size: 1.65rem;
    margin-bottom: 16px;
    letter-spacing: -.035em
}
.category-copy p {
    font-size: .9rem;
    margin-bottom: 18px;
    line-height: 1.55
}
.category-copy>span {
    color: var(--accent);
    font-size: 1.5rem;
    margin-top: auto;
    align-self: flex-end;
    line-height: 1
}
.method-section {
    background: var(--surface);
    border-block: 1px solid rgb(130 160 175 / .17)
}
.method-grid {
    display: grid;
    grid-template-columns: .9fr 1.1fr;
    gap: 90px
}
.method-grid>div {
    max-width: 445px
}
.project-steps {
    list-style: none;
    counter-reset: steps;
    padding: 0;
    margin: 0
}
.project-steps>li {
    counter-increment: steps;
    position: relative;
    padding: 0 0 27px 58px;
    margin-bottom: 27px;
    border-bottom: 1px solid var(--line)
}
.project-steps>li:last-child {
    padding-bottom: 0;
    margin-bottom: 0;
    border-bottom: 0
}
.project-steps>li:before {
    content: counter(steps,decimal-leading-zero);
    position: absolute;
    left: 0;
    top: 0;
    color: var(--accent);
    font-family: Consolas,monospace;
    font-size: 1rem
}
.project-steps h2,.project-steps h3 {
    font-size: 1.25rem;
    line-height: 1.35;
    margin-bottom: 11px;
    letter-spacing: -.015em
}
.project-steps p {
    font-size: .96rem;
    margin-bottom: 0
}
.product-grid {
    display: grid;
    grid-template-columns: repeat(3,minmax(0,1fr));
    gap: 40px 26px
}
.product-card {
    min-width: 0
}
.product-stage {
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1.45;
    background: #fff;
    border-radius: var(--radius);
    overflow: hidden
}
.product-image {
    height: 100%;
    width: 100%;
    object-fit: contain;
    padding: 22px;
    transition: transform .3s
}
.product-stage:hover .product-image {
    transform: scale(1.025)
}
.product-card-copy {
    padding: 23px 0 0
}
.product-card h2,.product-card h3 {
    font-size: 1.45rem;
    margin-bottom: 12px
}
.product-card p {
    font-size: .94rem;
    line-height: 1.65;
    margin-bottom: 14px
}
.product-card .text-link {
    font-size: .88rem;
    gap: 16px
}
.about-teaser {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 100px;
    align-items: center;
    border-top: 1px solid var(--line)
}
.about-year {
    font-size: clamp(6rem,13vw,12rem);
    line-height: 1;
    color: transparent;
    -webkit-text-stroke: 1px #78929e;
    letter-spacing: -.075em
}
.about-teaser h2 {
    max-width: 590px
}
.about-teaser p {
    max-width: 590px
}
.breadcrumbs {
    display: flex;
    align-items: center;
    gap: 13px;
    flex-wrap: wrap;
    padding-top: 29px;
    color: var(--muted);
    font-size: .79rem;
    line-height: 1.5
}
.breadcrumbs a {
    color: var(--muted)
}
.breadcrumbs span[aria-current] {
    color: var(--text)
}
.breadcrumbs>span[aria-hidden] {
    color: #7f98a3
}
.page-heading {
    padding: 65px 0 55px;
    max-width: 980px
}
.page-heading h1 {
    font-size: clamp(2.6rem,5.4vw,5rem);
    margin-bottom: 27px;
    text-wrap: balance
}
.page-heading p {
    font-size: 1.18rem;
    max-width: 730px;
    margin-bottom: 0
}
.category-tabs {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    padding-bottom: 26px;
    border-bottom: 1px solid var(--line)
}
.category-tabs a {
    padding: 9px 16px;
    border: 1px solid #526c79;
    border-radius: var(--radius);
    font-size: .87rem;
    line-height: 1.5
}
.category-tabs .is-current {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--ink)
}
.category-advice {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 60px;
    padding: 34px 0 0
}
.category-advice p {
    margin-bottom: 0;
    max-width: 730px
}
.category-advice ul {
    font-size: .91rem;
    color: var(--muted);
    margin: 0
}
.product-list {
    padding-top: 48px
}
.product-hero {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 64px;
    padding-top: 48px;
    align-items: center
}
.product-visual {
    min-width: 0
}
.product-visual.has-model-images + .product-intro {
    align-self: start
}
.detail-image-frame {
    min-width: 0;
    border-radius: var(--radius)
}
.mobile-model-gallery {
    display: none
}
.has-model-images .detail-image-frame {
    display: none
}
.has-model-images .mobile-model-gallery {
    display: grid;
    grid-template-columns: repeat(2,minmax(0,1fr));
    gap: 12px
}
.model-image-card {
    margin: 0;
    min-width: 0;
    overflow: hidden;
    border-radius: var(--radius);
    background: #fff
}
.model-image {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 1.2;
    padding: 10px
}
.model-image-card figcaption {
    padding: 0 8px 10px;
    color: #17323e;
    font-size: .74rem;
    line-height: 1.4;
    overflow-wrap: anywhere;
    text-align: center
}
.model-image-reference {
    display: block;
    margin-top: 3px;
    color: #5c707a;
    font-size: .65rem
}
.detail-image {
    width: 100%;
    height: 410px;
    padding: 28px;
    object-fit: contain;
    background: #fff;
    border-radius: var(--radius)
}
.product-visual>p {
    font-size: .76rem;
    margin: 15px 0 0;
    line-height: 1.6
}
.product-intro h1 {
    font-size: clamp(2.5rem,4.3vw,4.3rem);
    margin-bottom: 24px
}
.product-intro .intro {
    color: #e0e8e9
}
.product-intro p:not(.intro):not(.category-label) {
    font-size: .97rem
}
.product-intro .button-row {
    margin-top: 28px
}
.category-label {
    font-size: .86rem;
    color: var(--accent);
    margin-bottom: 18px
}
.product-information {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 64px;
    border-bottom: 1px solid var(--line)
}
.product-information h2,.specifications h2 {
    font-size: 2rem
}
.feature-list {
    padding-left: 20px;
    color: var(--muted)
}
.feature-list li {
    padding-left: 6px;
    margin-block: 11px;
    font-size: .98rem
}
.feature-list li::marker {
    color: var(--accent)
}
.table-scroll {
    overflow: auto;
    border: 1px solid var(--line);
    border-radius: var(--radius)
}
.mobile-parameter-label {
    display: none
}
table {
    border-collapse: collapse;
    width: 100%;
    font-size: .9rem;
    text-align: left
}
thead {
    background: var(--surface-raised)
}
th,td {
    padding: 17px 20px;
    border-bottom: 1px solid var(--line);
    min-width: 125px;
    vertical-align: top
}
thead th {
    color: var(--text);
    font-weight: 600;
    white-space: nowrap
}
tbody th {
    font-weight: 400;
    min-width: 175px
}
tbody td {
    color: var(--muted)
}
tbody tr:last-child th,tbody tr:last-child td {
    border-bottom: 0
}
.technical-note {
    font-size: .86rem;
    margin-top: 20px;
    max-width: 900px
}
.specifications>p {
    font-size: .87rem
}
.specifications {
    padding-bottom: 0
}
.project-layout {
    display: grid;
    grid-template-columns: 1.4fr .8fr;
    gap: 90px;
    padding: 15px 0 20px
}
.project-note {
    align-self: start;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 35px
}
.project-note p {
    font-size: 1.1rem;
    line-height: 1.65
}
.about-image {
    height: 490px;
    overflow: hidden;
    border-radius: var(--radius)
}
.wide-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 58%
}
.story-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 100px;
    border-bottom: 1px solid var(--line)
}
.story-grid h2 {
    font-size: 2.3rem
}
.story-grid p {
    font-size: 1.08rem
}
.story-grid h3 {
    font-size: 1.3rem;
    margin-top: 40px;
    margin-bottom: 15px
}
.contact-layout {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 90px;
    padding: 25px 0 110px
}
.contact-primary {
    padding-top: 12px
}
.contact-primary>span,
.contact-whatsapp>span {
    display: block;
    color: var(--muted);
    font-size: .88rem;
    margin-bottom: 18px
}
.contact-primary>a:not(.button),
.contact-whatsapp>a {
    display: block;
    font-size: clamp(1.65rem,3.4vw,3rem);
    letter-spacing: -.05em;
    color: var(--accent);
    overflow-wrap: anywhere;
    margin-bottom: 25px;
    line-height: 1.3
}
.contact-primary>p {
    font-size: .95rem;
    max-width: 480px;
    margin-bottom: 28px
}
.contact-whatsapp {
    margin-top: 36px
}
.contact-brief {
    background: var(--surface);
    padding: 36px;
    border-radius: var(--radius);
    border: 1px solid var(--line)
}
.contact-brief h2 {
    font-size: 2rem
}
.contact-brief p {
    font-size: .98rem
}
.article-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    padding-top: 0
}
.article-cover {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: var(--radius);
    margin-bottom: 28px
}
.article-card h2 {
    font-size: 2rem;
    line-height: 1.25
}
.article-card p {
    font-size: 1rem
}
.article {
    max-width: 790px;
    margin: 65px auto 100px
}
.article h1 {
    font-size: clamp(2.6rem,4.5vw,4.2rem);
    margin-bottom: 28px
}
.article-summary {
    font-size: 1.22rem
}
.article-meta {
    font-size: .8rem;
    color: #a9bec8;
    padding: 15px 0 30px;
    border-bottom: 1px solid var(--line);
    margin-bottom: 45px
}
.article section {
    margin-top: 42px
}
.article h2 {
    font-size: 1.8rem;
    letter-spacing: -.025em;
    margin-bottom: 18px;
    line-height: 1.3
}
.article section p {
    font-size: 1.07rem;
    line-height: 1.85
}
.article-sources {
    border-top: 1px solid var(--line);
    padding-top: 30px
}
.article-sources h2 {
    font-size: 1.3rem
}
.article-sources li {
    font-size: .9rem;
    color: var(--muted);
    padding-block: 6px
}
.article-sources a {
    text-decoration: underline;
    text-underline-offset: 4px;
    overflow-wrap: anywhere
}
.article>.text-link {
    margin-top: 25px
}
.error-page {
    padding-block: 95px 130px;
    max-width: 950px
}
.error-page>p:first-child {
    font-family: Consolas,monospace;
    color: var(--accent)
}
.error-page>p {
    max-width: 650px
}
.site-footer {
    border-top: 1px solid var(--line);
    background: #071925
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr .8fr;
    gap: 80px;
    padding-block: 65px
}
.footer-grid>div>p {
    font-size: .9rem;
    max-width: 360px;
    margin: 22px 0
}
.footer-contact {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    max-width: 100%
}
.footer-email {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    max-width: 100%;
    color: var(--accent);
    font-size: 1.02rem;
    overflow-wrap: anywhere
}
.footer-contact .whatsapp-link {
    max-width: 100%;
    white-space: normal
}
.footer-contact .whatsapp-link span {
    overflow-wrap: anywhere
}
.footer-grid nav {
    display: flex;
    align-items: flex-start;
    flex-direction: column;
    gap: 15px;
    font-size: .88rem;
    padding-top: 7px
}
.footer-bottom {
    border-top: 1px solid #2b4552;
    display: flex;
    justify-content: space-between;
    gap: 25px;
    padding-block: 24px;
    color: #a9bec8;
    font-size: .74rem
}
.footer-bottom span {
    overflow-wrap: anywhere
}
@media(min-width:1200px) {
    .main-navigation:not([open])>.nav-content {
        display: flex
    }
    .main-navigation {
        display: block
    }
    .nav-content {
        visibility: visible
    }
}
/* 与桌面条件互补，避免缩放时的小数宽度使两套导航都隐藏。 */
@media not all and (min-width:1200px) {
    .header-inner {
        min-height: 72px;
        justify-content: space-between;
        gap: 20px
    }
    .main-navigation {
        flex: none
    }
    .main-navigation>summary {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 18px;
        min-width: 80px;
        min-height: 46px;
        list-style: none;
        font-size: .9rem;
        cursor: pointer
    }
    .main-navigation[open]>.mobile-toggle>span {
        transform: rotate(45deg)
    }
    .mobile-toggle>span {
        font-size: 1.7rem;
        line-height: 1
    }
    .nav-content {
        position: absolute;
        left: 0;
        right: 0;
        top: 100%;
        max-height: calc(100dvh - 72px);
        overflow: auto;
        padding: 20px max(32px,calc((100vw - 1280px)/2));
        display: block;
        background: var(--background);
        border-bottom: 1px solid var(--line)
    }
    .main-navigation:not([open])>.nav-content {
        display: none
    }
    .nav-links {
        display: block;
        font-size: 1rem
    }
    .nav-links>a,.product-navigation>summary,.resources-navigation>summary {
        display: flex;
        min-height: 48px;
        padding: 11px 0;
        white-space: normal
    }
    .product-navigation>summary,.resources-navigation>summary {
        justify-content: space-between
    }
    .resources-list {
        position: static;
        width: auto;
        min-width: 0;
        max-width: none;
        max-height: none;
        margin: 8px 0 15px;
        box-shadow: none
    }
    .mega-menu {
        position: static;
        transform: none;
        left: auto;
        top: auto;
        width: auto;
        max-height: none;
        padding: 14px 20px 22px;
        box-shadow: none;
        margin: 8px 0 15px
    }
    .mega-columns {
        grid-template-columns: minmax(0,1fr);
        gap: 0
    }
    .mega-columns p {
        margin: 0;
        padding: 7px 0
    }
    .mega-columns a {
        font-size: .92rem;
        min-height: 44px
    }
    .mega-columns p a {
        align-items: center
    }
    .mega-products {
        display: none
    }
    .mega-overview {
        font-size: .94rem;
        margin-bottom: 15px
    }
    .header-tools {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 18px;
        border-top: 1px solid var(--line);
        padding-block: 18px 7px;
        margin-top: 15px
    }
    .language-navigation>summary {
        font-size: 1rem;
        justify-content: space-between;
        white-space: normal
    }
    .language-list {
        position: static;
        max-height: none;
        box-shadow: none;
        margin-top: 10px
    }
    .header-tools>.button {
        align-self: flex-start
    }
    .hero {
        min-height: 600px
    }
    .hero h1 {
        font-size: clamp(3.5rem,7vw,5.4rem)
    }
    .hero-copy {
        width: 58%
    }
    .hero-inner {
        padding-block: 75px
    }
    .method-grid {
        gap: 55px
    }
    .category-tile {
        grid-template-columns: 44% 56%
    }
    .category-copy {
        padding: 24px 20px
    }
    .category-copy h3 {
        font-size: 1.45rem
    }
    .product-hero {
        gap: 35px
    }
    .product-information {
        gap: 40px
    }
    .product-intro .button {
        gap: 12px;
        font-size: .85rem;
        padding-inline: 15px
    }
    .contact-layout {
        gap: 45px
    }
    .footer-grid {
        gap: 40px
    }
}
@media(max-width:900px) {
    .container {
        width: calc(100% - 48px)
    }
    .section {
        padding-block: 64px
    }
    .hero {
        min-height: 580px
    }
    .hero-media {
        left: 26%
    }
    .hero-copy {
        width: 70%;
        max-width: 630px
    }
    .hero h1 {
        max-width: 530px
    }
    .hero-media:after {
        background: linear-gradient(90deg,var(--background),rgb(8 29 43 / .75) 28%,rgb(8 29 43 / .1)),linear-gradient(0deg,var(--background) 3%,transparent 35%)
    }
    .category-grid {
        gap: 20px
    }
    .category-tile {
        display: block
    }
    .category-image {
        height: 220px
    }
    .category-product {
        height: 200px
    }
    .category-copy {
        min-height: 190px
    }
    .method-grid {
        grid-template-columns: 1fr;
        gap: 38px
    }
    .method-grid>div {
        max-width: 650px
    }
    .product-grid {
        grid-template-columns: repeat(2,minmax(0,1fr));
        gap: 36px 24px
    }
    .about-teaser {
        gap: 45px;
        grid-template-columns: .7fr 1fr
    }
    .about-year {
        font-size: 7rem
    }
    .category-advice {
        gap: 35px;
        grid-template-columns: 1.2fr 1fr
    }
    .product-hero {
        grid-template-columns: 1fr;
        gap: 35px
    }
    .detail-image {
        height: 400px
    }
    .product-intro {
        max-width: 750px
    }
    .product-intro h1 {
        font-size: 3.5rem
    }
    .product-information {
        grid-template-columns: 1fr 1fr;
        gap: 40px
    }
    .project-layout {
        gap: 40px;
        grid-template-columns: 1.3fr 1fr
    }
    .project-note {
        padding: 25px
    }
    .project-note p {
        font-size: 1rem
    }
    .story-grid {
        gap: 45px
    }
    .about-image {
        height: 370px
    }
    .contact-layout {
        grid-template-columns: 1fr;
        gap: 45px
    }
    .contact-primary>a:not(.button) {
        font-size: 2.7rem
    }
    .contact-brief {
        max-width: 720px
    }
    .article-cover {
        height: 240px
    }
    .article-grid {
        gap: 30px
    }
    .article-card h2 {
        font-size: 1.6rem
    }
    .footer-grid {
        grid-template-columns: 1.3fr 1fr;
        gap: 40px
    }
    .footer-grid>nav:last-child {
        grid-column: 2
    }
    .footer-grid>div {
        grid-row: 1/3
    }
    .specifications .table-hint {
        display: none
    }
    .specifications .table-scroll {
        overflow: visible;
        border: 0;
        border-radius: 0
    }
    .specifications table,.specifications tbody,.specifications tbody tr {
        display: block;
        width: 100%;
        min-width: 0
    }
    /* 表头只在视觉上隐藏，保留读屏所需的表头和单元格关系。 */
    .specifications thead {
        position: absolute;
        width: 1px;
        height: 1px;
        overflow: hidden;
        clip-path: inset(50%);
        white-space: nowrap
    }
    .specifications tbody {
        display: grid;
        grid-template-columns: minmax(0,1fr);
        gap: 16px
    }
    .specifications tbody tr {
        border: 1px solid var(--line);
        border-radius: var(--radius);
        background: var(--surface)
    }
    .specifications tbody th,.specifications tbody td {
        display: block;
        width: 100%;
        min-width: 0;
        padding: 14px 16px;
        border: 0;
        font-size: .9rem;
        white-space: normal;
        overflow-wrap: anywhere
    }
    .specifications tbody th {
        background: var(--surface-raised);
        border-radius: 7px 7px 0 0;
        font-size: 1rem;
        font-weight: 600;
        line-height: 1.4
    }
    .specifications tbody td+td {
        border-top: 1px solid var(--line)
    }
    .specifications .mobile-parameter-label {
        display: block;
        margin-bottom: 4px;
        color: var(--muted);
        font-size: .75rem;
        font-weight: 600
    }
    .specifications .parameter-value {
        display: block;
        color: var(--text)
    }
}
@media(max-width:600px) {
    body {
        font-size: 16px
    }
    .container {
        width: calc(100% - 36px)
    }
    .header-inner {
        width: calc(100% - 36px);
        min-height: 64px
    }
    .brand-image {
        width: 111px;
        max-height: 43px
    }
    .brand {
        min-width: 111px
    }
    .brand-word {
        font-size: 33px
    }
    .main-navigation>summary {
        font-size: .88rem;
        min-width: 77px
    }
    .nav-content {
        padding: 18px;
        max-height: calc(100dvh - 64px)
    }
    .header-tools>.button {
        align-self: stretch
    }
    .hero {
        display: block;
        min-height: 0;
        padding-bottom: 0
    }
    .hero-media {
        position: relative;
        inset: auto;
        height: 280px;
        width: 100%;
        z-index: -1;
        order: 2
    }
    .hero {
        display: flex;
        flex-direction: column
    }
    .hero-inner {
        order: 1;
        padding: 43px 0 32px
    }
    .hero-copy {
        width: 100%;
        max-width: none
    }
    .hero h1 {
        font-size: clamp(2.8rem,11.5vw,4.4rem);
        max-width: 540px;
        line-height: 1.06;
        margin-bottom: 22px;
        letter-spacing: -.055em
    }
    .eyebrow {
        font-size: .68rem;
        margin-bottom: 21px;
        letter-spacing: .1em
    }
    .hero-summary {
        font-size: 1rem;
        line-height: 1.65;
        margin-bottom: 26px;
        max-width: 460px
    }
    .hero-media:after {
        background: linear-gradient(0deg,var(--background) 3%,transparent 24%),linear-gradient(180deg,var(--background),transparent 25%)
    }
    .hero-image {
        object-position: center 60%
    }
    .hero .button {
        padding: 12px 16px;
        font-size: .86rem;
        min-height: 48px
    }
    .hero .button-row {
        gap: 10px
    }
    .section {
        padding-block: 46px
    }
    .section-heading {
        margin-bottom: 26px
    }
    .section-heading p {
        font-size: 1rem
    }
    .section-heading h2 {
        margin-bottom: 18px
    }
    h2 {
        font-size: 2rem;
        letter-spacing: -.035em
    }
    .intro {
        font-size: 1.06rem
    }
    .category-grid {
        grid-template-columns: 1fr;
        gap: 18px
    }
    .category-tile {
        display: grid;
        grid-template-columns: 43% 57%;
        min-height: 225px
    }
    .category-image {
        height: auto;
        min-height: 220px
    }
    .category-product {
        height: 205px;
        padding: 10px
    }
    .category-copy {
        min-height: 0;
        padding: 22px 18px
    }
    .category-copy h3 {
        font-size: 1.38rem;
        margin-bottom: 13px
    }
    .category-copy p {
        font-size: .86rem;
        margin-bottom: 12px
    }
    .method-grid {
        gap: 32px
    }
    .project-steps>li {
        padding-left: 42px;
        margin-bottom: 23px;
        padding-bottom: 23px
    }
    .project-steps>li:before {
        font-size: .88rem;
        top: 1px
    }
    .project-steps h2,.project-steps h3 {
        font-size: 1.17rem
    }
    .project-steps p {
        font-size: .94rem
    }
    .product-grid {
        grid-template-columns: 1fr;
        gap: 32px
    }
    .product-stage {
        aspect-ratio: 1.55
    }
    .product-image {
        padding: 20px
    }
    .product-card-copy {
        padding-top: 20px
    }
    .product-card h2,.product-card h3 {
        font-size: 1.5rem
    }
    .product-card p {
        font-size: .96rem
    }
    .about-teaser {
        grid-template-columns: 1fr;
        gap: 28px
    }
    .about-year {
        font-size: 6.5rem
    }
    .about-teaser .intro {
        font-size: 1rem
    }
    .breadcrumbs {
        font-size: .7rem;
        padding-top: 22px;
        gap: 9px
    }
    .page-heading {
        padding: 38px 0 34px
    }
    .page-heading h1 {
        font-size: clamp(2.3rem,9vw,3.2rem);
        margin-bottom: 22px
    }
    .page-heading p {
        font-size: 1.02rem
    }
    .category-tabs {
        gap: 8px;
        padding-bottom: 22px
    }
    .category-tabs a {
        font-size: .79rem;
        padding: 8px 12px
    }
    .category-advice {
        grid-template-columns: 1fr;
        gap: 20px;
        padding-top: 25px
    }
    .category-advice p {
        font-size: .97rem
    }
    .category-advice ul {
        font-size: .9rem
    }
    .product-list {
        padding-top: 32px
    }
    .product-hero {
        padding-top: 30px;
        gap: 26px
    }
    .detail-image {
        display: block;
        height: auto;
        max-height: 360px;
        padding: 12px
    }
    .detail-image-frame {
        display: none
    }
    .mobile-model-gallery {
        display: grid;
        grid-template-columns: repeat(2,minmax(0,1fr));
        gap: 12px
    }
    .mobile-model-gallery-single {
        grid-template-columns: 1fr
    }
    .mobile-model-gallery-single .model-image {
        aspect-ratio: auto;
        max-height: 330px
    }
    .product-visual>p {
        font-size: .7rem;
        line-height: 1.6;
        margin-top: 13px
    }
    .product-intro h1 {
        font-size: 2.7rem;
        margin-bottom: 19px
    }
    .product-intro .intro {
        font-size: 1.08rem
    }
    .product-intro .button-row {
        gap: 10px
    }
    .product-intro .button {
        font-size: .83rem;
        min-height: 48px
    }
    .product-information {
        grid-template-columns: 1fr;
        gap: 32px
    }
    .product-information h2,.specifications h2 {
        font-size: 1.8rem
    }
    .feature-list {
        margin-bottom: 0
    }
    .feature-list li {
        font-size: .93rem;
        margin-block: 10px
    }
    .specifications {
        padding-top: 40px
    }
    th,td {
        padding: 14px 16px;
        font-size: .84rem
    }
    .project-layout {
        grid-template-columns: 1fr;
        gap: 32px
    }
    .project-note {
        padding: 25px
    }
    .project-note p {
        font-size: 1rem
    }
    .about-image {
        height: 260px
    }
    .story-grid {
        grid-template-columns: 1fr;
        gap: 30px
    }
    .story-grid h2 {
        font-size: 1.85rem
    }
    .story-grid p {
        font-size: 1rem
    }
    .story-grid h3 {
        margin-top: 28px
    }
    .contact-layout {
        padding-top: 0;
        padding-bottom: 60px;
        gap: 34px
    }
    .contact-primary>a:not(.button) {
        font-size: clamp(1.35rem,6vw,2.2rem);
        letter-spacing: -.035em
    }
    .contact-primary>p {
        font-size: .9rem
    }
    .contact-brief {
        padding: 27px 23px
    }
    .contact-brief h2 {
        font-size: 1.75rem
    }
    .article-grid {
        grid-template-columns: 1fr;
        gap: 42px
    }
    .article-cover {
        height: 250px;
        margin-bottom: 23px
    }
    .article-card h2 {
        font-size: 1.9rem
    }
    .article {
        margin: 38px auto 60px
    }
    .article h1 {
        font-size: 2.5rem;
        line-height: 1.12
    }
    .article-summary {
        font-size: 1.08rem
    }
    .article-meta {
        padding-bottom: 25px;
        margin-bottom: 30px
    }
    .article section {
        margin-top: 32px
    }
    .article h2 {
        font-size: 1.5rem
    }
    .article section p {
        font-size: 1rem;
        line-height: 1.8
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
        padding-block: 43px
    }
    .footer-grid>div {
        grid-row: auto
    }
    .footer-grid>nav:last-child {
        grid-column: auto
    }
    .footer-grid nav {
        gap: 8px
    }
    .footer-grid nav a {
        min-height: 36px;
        padding: 4px 0
    }
    .footer-grid>div>p {
        max-width: 390px
    }
    .footer-bottom {
        display: block;
        padding-block: 22px;
        line-height: 1.8;
        font-size: .72rem
    }
    .footer-bottom span {
        display: block
    }
    .footer-bottom span+span {
        margin-top: 6px
    }
    .error-page {
        padding-block: 60px 80px
    }
    .button {
        max-width: 100%
    }
}
@media(max-width:359px) {
    .hero .button-row {
        align-items: stretch;
        flex-direction: column
    }
    .hero .button {
        width: 100%
    }
    .category-tile {
        display: block
    }
    .category-image {
        height: 190px;
        min-height: 0
    }
    .category-product {
        height: 180px
    }
    .category-copy {
        min-height: 180px
    }
    .product-intro .button-row {
        align-items: stretch;
        flex-direction: column
    }
    .product-intro .button {
        width: 100%
    }
    .hero h1 {
        font-size: 2.7rem
    }
}
@media(prefers-reduced-motion:reduce) {
    html {
        scroll-behavior: auto
    }
    *,*:before,*:after {
        animation-duration: .01ms!important;
        transition-duration: .01ms!important;
        animation-iteration-count: 1!important
    }
}
@media print {
    .mobile-model-gallery {
        display: none
    }
    .detail-image-frame {
        display: block
    }
    .site-header,.site-footer,.button-row,.category-tabs {
        display: none
    }
    body {
        background: white;
        color: black
    }
    p,td,li,address {
        color: #222
    }
    .container {
        width: 100%
    }
    .section {
        padding-block: 25px
    }
    .product-stage,.detail-image {
        border: 1px solid #bbb
    }
    .product-hero {
        break-inside: avoid
    }
    a {
        color: black;
        text-decoration: underline
    }
    .hero-media {
        opacity: .3
    }
    .hero {
        min-height: 350px
    }
    .table-scroll {
        overflow: visible
    }
}