:root {
    --canvas: #f7f1e7;
    --canvas-deep: #efe3d3;
    --surface: #fffdf8;
    --surface-warm: #f3e8d9;
    --surface-gold: #ead5b8;
    --surface-peach: #f1d7c2;
    --ink: #2a231d;
    --ink-soft: #66594f;
    --ink-faint: #62554b;
    --champagne: #c99a5b;
    --champagne-deep: #79502a;
    --brown: #6b4930;
    --brown-deep: #3d2b20;
    --line: rgba(74, 53, 39, 0.13);
    --line-strong: rgba(74, 53, 39, 0.22);
    --shadow: 0 24px 70px rgba(92, 66, 43, 0.08);
    --content: 1280px;
    --gutter: clamp(1.25rem, 5vw, 5rem);
    --section-space: clamp(5.75rem, 11vw, 10.625rem);
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
    /* 设计稿基准：1440 宽 ≈ 16px 根字号，随视口线性缩放 */
    --root-size: clamp(13.5px, calc(12.2px + 0.42vw), 17px);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    /* JS 会按分辨率覆写；此处为无 JS / 首屏回退 */
    font-size: var(--root-size);
    scroll-behavior: smooth;
    scroll-padding-top: 6.5rem;
    text-size-adjust: 100%;
    -webkit-text-size-adjust: 100%;
}

body {
    min-width: 320px;
    overflow-x: hidden;
    background: var(--canvas);
    color: var(--ink);
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", Inter, "SF Pro Display", Arial, sans-serif;
    font-size: 1rem;
    line-height: 1.65;
    text-rendering: optimizeLegibility;
    /* 中文：允许正常断行，避免整词/整句撑破容器 */
    line-break: auto;
    word-break: normal;
    overflow-wrap: break-word;
}

body.menu-open,
body.modal-open {
    overflow: hidden;
}

a,
button {
    color: inherit;
    font: inherit;
}

a {
    text-decoration: none;
}

button {
    border: 0;
}

img,
svg {
    display: block;
}

::selection {
    background: var(--surface-gold);
    color: var(--brown-deep);
}

:focus-visible {
    outline: 2px solid var(--champagne-deep);
    outline-offset: 4px;
}

.skip-link {
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 1000;
    padding: 10px 18px;
    border-radius: 999px;
    background: var(--brown-deep);
    color: #fffaf2;
    transform: translateY(-160%);
    transition: transform .2s ease;
}

.skip-link:focus {
    transform: translateY(0);
}

.site-header {
    position: fixed;
    top: 18px;
    left: 0;
    z-index: 100;
    width: 100%;
    padding: 0 var(--gutter);
    transition: top .35s var(--ease);
}

.site-header.is-scrolled {
    top: 10px;
}

.nav-shell {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: min(100%, var(--content));
    min-height: 72px;
    margin: 0 auto;
    padding: 0 14px 0 24px;
    border: 1px solid rgba(93, 69, 49, .11);
    border-radius: 28px;
    background: rgba(255, 253, 248, .94);
    box-shadow: 0 12px 38px rgba(91, 62, 38, .08);
    transition: min-height .35s var(--ease), box-shadow .35s ease;
}

.site-header.is-scrolled .nav-shell {
    min-height: 62px;
    border-color: rgba(93, 69, 49, .16);
    background: rgba(255, 253, 248, .97);
    box-shadow: 0 14px 40px rgba(91, 62, 38, .14);
    backdrop-filter: blur(12px);
}

.brand {
    position: relative;
    z-index: 2;
    flex: 0 0 auto;
}

.brand img {
    width: auto;
    height: clamp(29px, 2.6vw, 38px);
    object-fit: contain;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: clamp(18px, 2.2vw, 34px);
}

.nav-link {
    position: relative;
    padding: 12px 0;
    color: var(--ink-soft);
    font-size: 13px;
    font-weight: 550;
    transition: color .25s ease;
}

.nav-link::after {
    content: "";
    position: absolute;
    bottom: 6px;
    left: 50%;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--champagne-deep);
    opacity: 0;
    transform: translate(-50%, 4px);
    transition: opacity .25s ease, transform .25s var(--ease);
}

.nav-link:hover,
.nav-link.is-active {
    color: var(--ink);
}

.nav-link.is-active::after {
    opacity: 1;
    transform: translate(-50%, 0);
}

.nav-cta {
    display: inline-flex;
    align-items: center;
    min-height: 46px;
    padding: 0 20px;
    border-radius: 999px;
    background: var(--brown-deep);
    color: #fffaf2;
    font-size: 12px;
    font-weight: 650;
    transition: background .25s ease, transform .25s var(--ease);
}

.nav-cta:hover,
.nav-cta.is-active {
    background: var(--brown);
    transform: translateY(-1px);
}

.menu-toggle {
    position: relative;
    z-index: 2;
    display: none;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--surface-warm);
    cursor: pointer;
}

.menu-toggle span {
    position: absolute;
    left: 13px;
    width: 18px;
    height: 1px;
    background: var(--ink);
    transition: top .3s var(--ease), transform .3s var(--ease);
}

.menu-toggle span:first-child { top: 17px; }
.menu-toggle span:last-child { top: 25px; }
.menu-toggle[aria-expanded="true"] span:first-child { top: 21px; transform: rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { top: 21px; transform: rotate(-45deg); }

main {
    overflow: hidden;
}

h1,
h2,
h3,
h4,
p,
li,
td,
th,
label,
button,
a {
    line-break: auto;
    word-break: normal;
    overflow-wrap: break-word;
}

p {
    overflow-wrap: break-word;
}

/* 标题允许按字断行，避免中文大标题溢出 */
h1,
h2,
h3,
.hero-title,
.page-hero h1,
.cta-band h2,
.home-preview__head h2 {
    word-break: break-word;
    overflow-wrap: anywhere;
}

.hero {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    min-height: max(760px, 100svh);
    padding: clamp(132px, 16vh, 180px) var(--gutter) 30px;
    overflow: hidden;
    isolation: isolate;
    background: #d8c1a2;
}

.hero::after {
    content: "";
    position: absolute;
    right: 0;
    bottom: -1px;
    left: 0;
    z-index: 0;
    height: clamp(110px, 15vw, 210px);
    background: linear-gradient(180deg, transparent 0%, rgba(247, 241, 231, .58) 52%, var(--canvas) 100%);
    pointer-events: none;
}

.hero-background,
.hero-background > img,
.hero-background > div {
    position: absolute;
    inset: 0;
}

.hero-background {
    z-index: -2;
}

.hero-background > img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center center;
}

.hero-background > div {
    z-index: 1;
    background:
        linear-gradient(90deg, rgba(249, 242, 231, .94) 0%, rgba(249, 242, 231, .72) 38%, rgba(249, 242, 231, .18) 72%, rgba(86, 55, 34, .08) 100%),
        linear-gradient(180deg, rgba(255, 241, 218, .22), transparent 52%, rgba(77, 50, 32, .3));
}

.hero-inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 22px;
    align-items: end;
    width: min(100%, var(--content));
    margin: 0 auto;
}

.hero-copy {
    grid-column: 1 / span 8;
    position: relative;
    z-index: 2;
    max-width: 820px;
}

.overline,
.section-label,
.contact-label {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--champagne-deep);
    font-size: 10px;
    font-style: normal;
    font-weight: 750;
    letter-spacing: .16em;
    text-transform: uppercase;
}

.overline i {
    width: 34px;
    height: 1px;
    background: currentColor;
}

.hero h1,
.hero-title {
    margin-top: 1.25rem;
    font-size: clamp(2.75rem, 4.2vw + 1.2rem, 5.5rem);
    font-weight: 440;
    letter-spacing: -.045em;
    line-height: 1.05;
}

.hero-title .type-line {
    display: block;
    min-height: 1em;
}

.hero-title .type-line--accent {
    margin-top: 2px;
    color: var(--brown);
}

.hero-title .type-cursor {
    display: inline-block;
    width: max(3px, .05em);
    height: .78em;
    margin-left: .08em;
    border-radius: 1px;
    background: currentColor;
    vertical-align: .02em;
    animation: typeCaret .9s step-end infinite;
}

.hero-sub {
    max-width: 38rem;
    margin-top: 1.5rem;
    font-size: clamp(1.125rem, 0.95rem + 0.55vw, 1.625rem);
    font-weight: 560;
    letter-spacing: -.012em;
    line-height: 1.45;
}

.hero-lead {
    max-width: 38rem;
    margin-top: 0.75rem;
    color: #65594f;
    font-size: clamp(0.875rem, 0.8rem + 0.3vw, 1.0625rem);
    line-height: 1.76;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 11px;
    margin-top: 27px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 54px;
    padding: 0 28px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 650;
    transition: transform .3s var(--ease), background .3s ease, color .3s ease, box-shadow .3s ease;
}

.button:hover {
    transform: translateY(-3px);
}

.button:active {
    transform: translateY(-1px);
}

.button--primary {
    background: var(--brown-deep);
    color: #fffaf2;
    box-shadow: 0 14px 30px rgba(65, 44, 30, .16);
}

.button--primary:hover {
    background: var(--brown);
    box-shadow: 0 18px 40px rgba(65, 44, 30, .22);
}

.button--secondary {
    border: 1px solid var(--line-strong);
    background: rgba(255, 253, 248, .7);
}

.button--secondary:hover {
    background: var(--surface);
    box-shadow: 0 12px 28px rgba(92, 66, 43, .08);
}

.hero-context {
    grid-column: 10 / -1;
    align-self: end;
    justify-self: end;
    width: min(100%, 300px);
    padding: 21px 22px;
    border: 1px solid rgba(255,255,255,.48);
    border-radius: 24px;
    background: rgba(255, 250, 241, .86);
    color: var(--brown-deep);
    box-shadow: 0 18px 44px rgba(64, 42, 27, .1);
}

.hero-context > p {
    color: var(--ink-faint);
    font-size: 9px;
    font-weight: 700;
    letter-spacing: .12em;
}

.hero-context > strong {
    display: block;
    margin-top: 8px;
    font-size: 16px;
    font-weight: 620;
}

.hero-context > span {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 18px;
    padding-top: 15px;
    border-top: 1px solid var(--line);
    color: var(--ink-soft);
    font-size: 10px;
}

.hero-context i,
.delivery-note i {
    flex: 0 0 auto;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #7d9b68;
    box-shadow: 0 0 0 5px rgba(125, 155, 104, .14);
}

.trust-shell {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: minmax(280px, 1.45fr) repeat(3, minmax(140px, .72fr));
    width: min(100%, var(--content));
    margin: 28px auto 0;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 28px;
    background: rgba(255, 253, 248, .72);
}

.trust-intro,
.trust-item {
    padding: 20px clamp(18px, 2vw, 30px);
}

.trust-intro {
    border-right: 1px solid var(--line);
}

.trust-intro span {
    font-size: 13px;
    font-weight: 650;
}

.trust-intro p {
    margin-top: 2px;
    color: var(--ink-faint);
    font-size: 11px;
}

.trust-item {
    border-right: 1px solid var(--line);
}

.trust-item:last-child {
    border-right: 0;
}

.trust-item strong,
.trust-item span {
    display: block;
}

.trust-item strong {
    font-size: 19px;
    font-weight: 650;
    transition: transform .45s var(--ease), color .45s ease;
}

.trust-item strong.is-counting {
    transform: translateY(-2px);
    color: var(--brown-deep);
}

.trust-item span {
    margin-top: 1px;
    color: var(--ink-faint);
    font-size: 10px;
}

.section {
    position: relative;
    padding: var(--section-space) var(--gutter);
}

.capabilities {
    width: calc(100% - clamp(24px, 3vw, 48px));
    margin: 0 auto;
    border-radius: clamp(42px, 5vw, 72px);
    background: var(--canvas-deep);
}

.section-heading {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr);
    gap: clamp(50px, 9vw, 140px);
    align-items: end;
    width: min(100%, var(--content));
    margin: 0 auto clamp(48px, 6vw, 84px);
}

.section-heading > div,
.delivery-intro,
.about-copy,
.contact-copy {
    container-type: inline-size;
}

.section-label span {
    display: inline-grid;
    place-items: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(201, 154, 91, .14);
    font-size: 9px;
}

.section-heading h2,
.delivery-intro h2,
.about-copy h2,
.contact-copy h2 {
    margin-top: 18px;
    font-size: clamp(42px, 5vw, 72px);
    font-weight: 500;
    letter-spacing: -.032em;
    line-height: 1.14;
}

.section-heading h2 {
    font-size: clamp(36px, 6cqi, 58px);
}

.about-copy h2 {
    font-size: clamp(36px, 7cqi, 58px);
}

.contact-copy h2 {
    font-size: clamp(42px, 6.5cqi, 72px);
}

.section-heading > p {
    padding-bottom: 5px;
    color: var(--ink-soft);
    font-size: 15px;
    line-height: 1.78;
}

.capability-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    width: min(100%, var(--content));
    margin: 0 auto;
}

.capability-card {
    min-height: 360px;
    padding: clamp(25px, 2.5vw, 36px);
    border: 1px solid rgba(92, 66, 43, .1);
    border-radius: 30px;
    background: rgba(255, 253, 248, .72);
    transition:
        transform .4s var(--ease),
        background .4s ease,
        box-shadow .4s ease,
        opacity .75s var(--ease);
}

.capability-card:hover {
    transform: translateY(-7px);
    background: var(--surface);
    box-shadow: 0 20px 55px rgba(92, 66, 43, .09);
}

.capability-card[data-reveal].is-visible:hover {
    transform: translateY(-7px);
}

.capability-card--accent {
    background: var(--surface-gold);
}

.capability-card--accent:hover {
    background: #eddabd;
}

.capability-grid [data-reveal]:nth-child(1) { --reveal-delay: 0ms; }
.capability-grid [data-reveal]:nth-child(2) { --reveal-delay: 90ms; }
.capability-grid [data-reveal]:nth-child(3) { --reveal-delay: 180ms; }
.capability-grid [data-reveal]:nth-child(4) { --reveal-delay: 270ms; }

.capability-icon {
    display: grid;
    place-items: center;
    width: 58px;
    height: 58px;
    margin-bottom: 48px;
    border-radius: 20px;
    background: var(--surface);
    color: var(--brown);
    box-shadow: 0 9px 24px rgba(92, 66, 43, .07);
}

.capability-icon svg {
    width: 31px;
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 1.4;
}

.capability-card > span {
    color: var(--champagne-deep);
    font-size: 9px;
    font-weight: 750;
    letter-spacing: .16em;
}

.capability-card h3 {
    margin-top: 8px;
    font-size: 25px;
    font-weight: 580;
    letter-spacing: -.025em;
}

.capability-card p {
    margin-top: 15px;
    color: var(--ink-soft);
    font-size: 13px;
    line-height: 1.75;
}

.products {
    background: var(--canvas);
}

.section-heading--products {
    margin-bottom: clamp(42px, 5vw, 68px);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 18px;
    width: min(100%, var(--content));
    margin: 0 auto;
}

.product-card {
    position: relative;
    display: flex;
    flex-direction: column;
    min-height: 590px;
    padding: clamp(28px, 3.4vw, 48px);
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 40px;
    transition:
        transform .45s var(--ease),
        box-shadow .45s ease,
        opacity .75s var(--ease);
}

.product-card:hover,
.product-card.is-active {
    transform: translateY(-8px);
    box-shadow: 0 28px 70px rgba(92, 66, 43, .12);
}

.product-card[data-reveal].is-visible:hover,
.product-card[data-reveal].is-visible.is-active {
    transform: translateY(-8px);
}

.product-grid [data-reveal]:nth-child(1) { --reveal-delay: 0ms; }
.product-grid [data-reveal]:nth-child(2) { --reveal-delay: 110ms; }
.product-grid [data-reveal]:nth-child(3) { --reveal-delay: 220ms; }

.product-card--server {
    grid-column: span 7;
    background: var(--surface);
}

.product-card--cdn {
    grid-column: span 5;
    background: var(--surface-gold);
}

.product-card--metal {
    grid-column: span 12;
    display: grid;
    grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
    gap: clamp(40px, 8vw, 130px);
    min-height: 430px;
    background: var(--surface-peach);
}

.product-card--metal .product-topline,
.product-card--metal > a {
    grid-column: 1 / -1;
}

.product-card--metal .product-copy {
    align-self: end;
}

.product-card--metal .product-meta {
    align-self: end;
    margin-top: 0;
}

.product-topline {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.product-topline span {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: rgba(255,255,255,.5);
    font-size: 11px;
    font-weight: 650;
}

.product-topline em {
    color: var(--ink-faint);
    font-size: 9px;
    font-style: normal;
    font-weight: 700;
    letter-spacing: .16em;
}

.product-copy {
    margin-top: auto;
    padding-top: 80px;
}

.product-copy h3 {
    font-size: clamp(37px, 4vw, 60px);
    font-weight: 540;
    letter-spacing: -.032em;
    line-height: 1.1;
}

.product-sub {
    max-width: 540px;
    margin-top: 18px;
    color: var(--ink);
    font-size: 17px;
    font-weight: 620;
    line-height: 1.55;
}

.product-copy > p:not(.product-sub) {
    max-width: 580px;
    margin-top: 12px;
    color: var(--ink-soft);
    font-size: 13px;
    line-height: 1.75;
}

.product-meta {
    display: grid;
    gap: 13px;
    margin-top: 38px;
    padding-top: 24px;
    border-top: 1px solid var(--line);
}

.product-meta div {
    display: grid;
    grid-template-columns: 86px 1fr;
    gap: 20px;
}

.product-meta span {
    color: var(--ink-faint);
    font-size: 10px;
}

.product-meta strong {
    font-size: 11px;
    font-weight: 600;
}

.product-card > a {
    align-self: flex-start;
    margin-top: 32px;
    padding: 10px 15px;
    border-radius: 999px;
    background: rgba(255,255,255,.48);
    font-size: 11px;
    font-weight: 650;
}

.delivery {
    padding-top: 40px;
}

.delivery-shell {
    display: grid;
    grid-template-columns: minmax(0, .82fr) minmax(460px, 1.18fr);
    gap: clamp(55px, 9vw, 140px);
    width: min(100%, var(--content));
    margin: 0 auto;
    padding: clamp(45px, 6vw, 86px);
    border-radius: clamp(38px, 5vw, 62px);
    background: var(--surface);
    box-shadow: var(--shadow);
}

.delivery-intro {
    align-self: center;
}

.delivery-title {
    font-size: clamp(36px, 9cqi, 50px) !important;
    letter-spacing: -.02em !important;
    line-height: 1.2 !important;
}

.delivery-title span {
    display: block;
}

.delivery-title span + span {
    margin-top: 5px;
}

.delivery-intro > p:not(.section-label) {
    max-width: 530px;
    margin-top: 21px;
    color: var(--ink-soft);
    font-size: 14px;
    line-height: 1.8;
}

.delivery-note {
    display: inline-flex;
    align-items: center;
    gap: 13px;
    margin-top: 34px;
    padding: 13px 18px;
    border-radius: 999px;
    background: var(--surface-warm);
    font-size: 11px;
    font-weight: 650;
}

.delivery-steps {
    position: relative;
    display: grid;
    gap: 13px;
    list-style: none;
}

.delivery-steps li {
    display: grid;
    grid-template-columns: 48px 1fr;
    gap: 19px;
    align-items: center;
    padding: 21px 23px;
    border-radius: 24px;
    background: var(--surface-warm);
    transition:
        transform .45s var(--ease),
        background .45s ease,
        box-shadow .45s ease,
        opacity .75s var(--ease);
}

.delivery-steps li:hover,
.delivery-steps li.is-lit {
    transform: translateX(6px);
    background: var(--surface-gold);
}

.delivery-steps li[data-reveal].is-visible:hover,
.delivery-steps li[data-reveal].is-visible.is-lit {
    transform: translateX(6px);
}

.delivery-steps li.is-lit {
    box-shadow: 0 12px 28px rgba(92, 66, 43, .08);
}

.delivery-steps li > span {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--surface);
    color: var(--champagne-deep);
    font-size: 10px;
    font-weight: 700;
    transition: background .4s ease, color .4s ease, transform .4s var(--ease);
}

.delivery-steps li.is-lit > span {
    background: var(--brown-deep);
    color: #fffaf2;
    transform: scale(1.06);
}

.delivery-steps [data-reveal]:nth-child(1) { --reveal-delay: 0ms; }
.delivery-steps [data-reveal]:nth-child(2) { --reveal-delay: 90ms; }
.delivery-steps [data-reveal]:nth-child(3) { --reveal-delay: 180ms; }
.delivery-steps [data-reveal]:nth-child(4) { --reveal-delay: 270ms; }

.delivery-steps h3 {
    font-size: 17px;
    font-weight: 620;
}

.delivery-steps p {
    margin-top: 2px;
    color: var(--ink-soft);
    font-size: 12px;
}

.about {
    padding-top: 50px;
}

.about-shell {
    position: relative;
    display: grid;
    grid-template-columns: minmax(340px, .75fr) minmax(0, 1.25fr);
    gap: clamp(50px, 8vw, 120px);
    align-items: center;
    width: min(100%, var(--content));
    margin: 0 auto;
    padding: clamp(50px, 7vw, 100px);
    overflow: hidden;
    border-radius: clamp(40px, 5vw, 64px);
    background: var(--surface-warm);
}

.about-brand {
    display: flex;
    align-items: baseline;
    justify-content: center;
    min-height: 330px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--surface) 0 43%, transparent 44%);
    color: var(--brown);
    opacity: 0;
    transform: translateX(-28px) scale(.96);
    transition: opacity .9s var(--ease), transform .9s var(--ease);
    transition-delay: .12s;
}

.about-shell.is-visible .about-brand {
    opacity: 1;
    transform: translateX(0) scale(1);
}

.about-brand span,
.about-brand strong {
    align-self: center;
    font-size: clamp(65px, 8vw, 120px);
    letter-spacing: -.09em;
    line-height: 1;
}

.about-brand span { font-weight: 300; }
.about-brand strong { font-weight: 700; }

.about-copy > p:not(.section-label) {
    max-width: 670px;
    margin-top: 22px;
    color: var(--ink-soft);
    font-size: 14px;
    line-height: 1.82;
}

.about-meta {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 39px;
}

.about-meta div {
    padding: 18px;
    border-radius: 20px;
    background: rgba(255, 253, 248, .66);
}

.about-meta span,
.about-meta strong {
    display: block;
}

.about-meta span {
    color: var(--ink-faint);
    font-size: 9px;
}

.about-meta strong {
    margin-top: 5px;
    font-size: 12px;
    font-weight: 650;
}

.contact {
    padding-top: 50px;
    padding-bottom: clamp(55px, 7vw, 100px);
}

.contact-shell {
    display: grid;
    grid-template-columns: minmax(0, 1.22fr) minmax(330px, .58fr);
    gap: clamp(60px, 10vw, 160px);
    width: min(100%, var(--content));
    min-height: 610px;
    margin: 0 auto;
    padding: clamp(52px, 7vw, 100px);
    border-radius: clamp(42px, 5vw, 68px);
    background:
        radial-gradient(circle at 8% 10%, rgba(218, 173, 116, .17), transparent 30%),
        var(--brown-deep);
    color: #fff8ed;
}

.contact-copy {
    align-self: center;
}

.contact-label {
    color: #dcb77f;
}

.contact-copy h2 {
    font-size: clamp(42px, 6.5cqi, 72px);
    letter-spacing: -.025em;
    line-height: 1.08;
}

.contact-copy > p:not(.contact-label) {
    max-width: 600px;
    margin-top: 21px;
    color: rgba(255, 248, 237, .63);
    font-size: 14px;
    line-height: 1.78;
}

.contact-number {
    display: inline-flex;
    align-items: center;
    margin-top: 42px;
    padding: 15px 22px;
    border-radius: 999px;
    background: #fff8ed;
    color: var(--brown-deep);
    font-size: clamp(20px, 2.3vw, 34px);
    font-weight: 540;
    letter-spacing: -.03em;
    transition: transform .3s var(--ease), box-shadow .3s ease;
}

.contact-shell.is-visible .contact-number {
    animation: phoneIn .85s var(--ease) .28s both;
}

.contact-number:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(0, 0, 0, .12);
}

.contact-detail {
    align-self: end;
}

.contact-address {
    padding: 0 0 27px;
    border-bottom: 1px solid rgba(255,255,255,.14);
}

.contact-address span {
    color: rgba(255,248,237,.48);
    font-size: 9px;
    letter-spacing: .12em;
}

.contact-address p {
    margin-top: 9px;
    font-size: 13px;
    line-height: 1.8;
}

.contact-methods button {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 18px 0;
    border-bottom: 1px solid rgba(255,255,255,.14);
    background: transparent;
    color: #fff8ed;
    cursor: pointer;
    text-align: left;
}

.contact-methods button span {
    font-size: 13px;
}

.contact-methods button em {
    color: rgba(255,248,237,.48);
    font-size: 9px;
    font-style: normal;
    transition: color .25s ease, transform .25s var(--ease);
}

.contact-methods button:hover em {
    color: #dcb77f;
    transform: translateX(4px);
}

.site-footer {
    padding: 0 var(--gutter) 28px;
    background: var(--canvas);
}

.footer-main,
.footer-legal {
    width: min(100%, var(--content));
    margin: 0 auto;
}

.footer-main {
    padding: clamp(36px, 4.5vw, 52px) clamp(28px, 4vw, 48px);
    border: 1px solid var(--line);
    border-radius: clamp(28px, 4vw, 42px);
    background: var(--surface-warm);
}

.footer-brand {
    min-width: 0;
}

.footer-brand > img {
    width: auto;
    height: 36px;
}

.footer-brand > p {
    max-width: 420px;
    margin-top: 18px;
    color: var(--ink-soft);
    font-size: 14px;
    line-height: 1.75;
}

.footer-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 22px;
}

.footer-tags span {
    padding: 7px 12px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(255, 253, 248, .6);
    color: var(--brown);
    font-size: 10px;
    font-weight: 650;
}

.footer-legal {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
    padding: 20px clamp(10px, 2vw, 24px) 0;
    color: var(--ink-faint);
    font-size: 11px;
}

.footer-legal a {
    display: flex;
    align-items: center;
    gap: 8px;
    transition: color .25s ease;
}

.footer-legal a:hover {
    color: var(--brown);
}

.footer-legal img {
    width: 16px;
    height: 16px;
    object-fit: contain;
}

.back-to-top {
    position: fixed;
    right: max(20px, env(safe-area-inset-right));
    bottom: max(20px, env(safe-area-inset-bottom));
    z-index: 90;
    display: grid;
    place-items: center;
    width: 54px;
    height: 54px;
    border: 1px solid rgba(255, 255, 255, .18);
    border-radius: 50%;
    background: var(--brown-deep);
    color: #fffaf2;
    box-shadow: 0 14px 34px rgba(61, 43, 32, .2);
    visibility: hidden;
    opacity: 0;
    transform: translateY(12px);
    transition: visibility .3s, opacity .3s ease, transform .3s var(--ease), background .25s ease;
}

.back-to-top.is-visible {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
}

.back-to-top.is-visible:hover {
    background: var(--brown);
    transform: translateY(-3px);
}

.back-to-top:focus-visible {
    outline: 2px solid var(--champagne);
    outline-offset: 3px;
}

.back-to-top svg {
    width: 21px;
    height: 21px;
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 1.8;
}

.qr-modal[hidden],
.qr-dialog img[hidden] {
    display: none;
}

.qr-modal {
    position: fixed;
    inset: 0;
    z-index: 500;
    display: grid;
    place-items: center;
    padding: 22px;
}

.qr-backdrop {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    background: rgba(57, 39, 28, .72);
    cursor: pointer;
}

.qr-dialog {
    position: relative;
    z-index: 1;
    width: min(430px, 100%);
    padding: 46px;
    border-radius: 36px;
    background: var(--surface);
    box-shadow: 0 30px 90px rgba(48, 31, 20, .25);
    text-align: center;
    animation: modalIn .5s var(--ease) both;
}

.qr-dialog > p:first-of-type {
    color: var(--champagne-deep);
    font-size: 9px;
    font-weight: 750;
    letter-spacing: .16em;
}

.qr-dialog h2 {
    margin: 9px 0 25px;
    font-size: 24px;
    font-weight: 600;
}

.qr-dialog img {
    width: min(250px, 100%);
    aspect-ratio: 1;
    margin: 0 auto 18px;
    border-radius: 22px;
    object-fit: contain;
    background: #fff;
}

.qr-dialog > p:last-child {
    color: var(--ink-soft);
    font-size: 12px;
}

.qr-close {
    position: absolute;
    top: 14px;
    right: 14px;
    display: grid;
    place-items: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--surface-warm);
    color: var(--ink);
    cursor: pointer;
    transition: background .25s ease, transform .25s var(--ease);
}

.qr-close:hover {
    background: var(--surface-gold);
    transform: rotate(90deg);
}

.qr-close svg {
    width: 18px;
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-width: 1.7;
}

[data-reveal] {
    opacity: 0;
    transform: translateY(18px);
    transition:
        opacity .75s var(--ease),
        transform .75s var(--ease);
    transition-delay: var(--reveal-delay, 0ms);
}

[data-reveal].is-visible {
    opacity: 1;
    transform: translateY(0);
}

noscript {
    position: fixed;
    right: 16px;
    bottom: 16px;
    z-index: 600;
    max-width: 360px;
    padding: 12px 16px;
    border-radius: 18px;
    background: var(--brown-deep);
    color: #fff8ed;
    font-size: 12px;
}

@keyframes modalIn {
    from { opacity: 0; transform: translateY(18px) scale(.97); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes typeCaret {
    0%,
    45% { opacity: 1; }
    50%,
    100% { opacity: 0; }
}

@keyframes phoneIn {
    0% { opacity: 0; transform: scale(.92); }
    60% { opacity: 1; transform: scale(1.04); }
    100% { opacity: 1; transform: scale(1); }
}

/* 宽屏也不再强制 nowrap，避免中文标题被裁切/溢出 */
@media (min-width: 1400px) {
    .section-label,
    .page-kicker {
        white-space: nowrap;
    }
}

@media (max-width: 1060px) {
    .menu-toggle {
        display: block;
    }

    .site-nav {
        position: fixed;
        top: 10px;
        right: var(--gutter);
        left: var(--gutter);
        z-index: 1;
        flex-direction: column;
        align-items: stretch;
        justify-content: center;
        min-height: calc(100svh - 20px);
        padding: 100px clamp(28px, 7vw, 70px) 50px;
        border-radius: 38px;
        background: var(--surface);
        box-shadow: 0 25px 80px rgba(71, 48, 31, .18);
        visibility: hidden;
        opacity: 0;
        transform: translateY(-12px) scale(.98);
        transition: visibility .35s, opacity .35s ease, transform .35s var(--ease);
    }

    .site-nav.is-open {
        visibility: visible;
        opacity: 1;
        transform: translateY(0) scale(1);
    }

    .nav-link {
        padding: 6px 0;
        font-size: clamp(27px, 6vw, 52px);
        font-weight: 420;
        letter-spacing: -.04em;
    }

    .nav-link::after {
        display: none;
    }

    .nav-cta {
        align-self: flex-start;
        margin-top: 20px;
        min-height: 52px;
        padding: 0 24px;
        font-size: 14px;
    }

    .hero-inner {
        grid-template-columns: 1fr;
    }

    .hero-copy {
        grid-column: 1;
        width: min(100%, 780px);
    }

    .hero-context {
        grid-column: 1;
        justify-self: start;
        width: min(100%, 300px);
        margin-top: 22px;
    }

    .capability-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .product-card--server,
    .product-card--cdn,
    .product-card--metal {
        grid-column: span 12;
    }

    .delivery-shell,
    .about-shell,
    .contact-shell {
        grid-template-columns: 1fr;
    }

    .delivery-intro > p:not(.section-label) {
        max-width: 680px;
    }

    .about-brand {
        min-height: 280px;
    }

    .contact-shell {
        min-height: 0;
    }

    .contact-detail {
        width: min(100%, 560px);
    }

}

@media (max-width: 720px) {
    html {
        scroll-padding-top: 84px;
    }

    :root {
        --gutter: 18px;
        --section-space: 78px;
    }

    .site-header {
        top: 10px;
    }

    .nav-shell {
        min-height: 62px;
        padding: 0 9px 0 17px;
        border-radius: 23px;
    }

    .brand {
        display: flex;
        align-items: center;
        min-height: 44px;
    }

    .brand img {
        max-width: 185px;
        height: 34px;
    }

    .hero {
        min-height: max(820px, 100svh);
        padding-top: 116px;
        padding-bottom: 20px;
    }

    .hero-background > img {
        object-position: 58% center;
    }

    .hero-background > div {
        background:
            linear-gradient(180deg, rgba(249, 242, 231, .88) 0%, rgba(249, 242, 231, .7) 53%, rgba(76, 49, 31, .3) 100%),
            linear-gradient(90deg, rgba(249, 242, 231, .68), rgba(249, 242, 231, .18));
    }

    .hero h1,
    .hero-title {
        font-size: clamp(2.5rem, 10vw + 0.5rem, 4.25rem);
        letter-spacing: -.035em;
        line-height: 1.05;
    }

    .hero-title .type-line--accent {
        margin-top: 2px;
        margin-left: 0;
    }

    .hero-sub {
        margin-top: 1.25rem;
        font-size: clamp(1.05rem, 0.95rem + 1.2vw, 1.25rem);
        line-height: 1.45;
    }

    .hero-actions {
        align-items: stretch;
        flex-direction: column;
        width: min(100%, 330px);
    }

    .hero-context {
        display: none;
    }

    .trust-shell {
        grid-template-columns: repeat(3, 1fr);
        margin-top: 20px;
        border-radius: 24px;
    }

    .trust-intro {
        grid-column: 1 / -1;
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }

    .trust-item {
        padding: 15px 10px;
        text-align: center;
    }

    .trust-item strong {
        font-size: 15px;
    }

    .trust-item span {
        font-size: 8px;
    }

    .capabilities {
        width: calc(100% - 16px);
        border-radius: 38px;
    }

    .section-heading {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .section-heading h2,
    .delivery-intro h2,
    .about-copy h2,
    .contact-copy h2 {
        font-size: clamp(34px, 10.5vw, 44px);
    }

    .delivery-title {
        font-size: clamp(34px, 10.5vw, 44px) !important;
    }

    .delivery-title span {
        display: inline;
    }

    .delivery-title span + span {
        margin-top: 0;
    }

    .capability-grid {
        grid-template-columns: 1fr;
    }

    .capability-card {
        min-height: 280px;
        border-radius: 27px;
    }

    .capability-icon {
        margin-bottom: 34px;
    }

    .product-grid {
        gap: 14px;
    }

    .product-card,
    .product-card--metal {
        display: flex;
        min-height: auto;
        border-radius: 30px;
    }

    .product-card--metal {
        gap: 0;
    }

    .product-copy {
        margin-top: 52px;
        padding-top: 0;
    }

    .product-card--metal .product-copy,
    .product-card--metal .product-meta {
        align-self: stretch;
        width: 100%;
        text-align: left;
    }

    .product-card--metal .product-meta {
        margin-top: 34px;
    }

    .product-meta div {
        grid-template-columns: 1fr;
        gap: 4px;
    }

    .delivery {
        padding-top: 10px;
    }

    .delivery-shell,
    .about-shell,
    .contact-shell {
        padding: 34px 22px;
        border-radius: 34px;
    }

    .delivery-shell {
        gap: 36px;
    }

    .about-shell {
        gap: 34px;
    }

    .contact-shell {
        gap: 44px;
    }

    .delivery-steps li {
        grid-template-columns: 42px 1fr;
        gap: 14px;
        padding: 17px;
        border-radius: 21px;
    }

    .delivery-steps li > span {
        width: 38px;
        height: 38px;
    }

    .about-brand {
        min-height: 180px;
    }

    .about-meta {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .about-meta div:last-child {
        grid-column: 1 / -1;
    }

    .contact-copy h2 {
        line-height: 1.12;
    }

    .contact-number {
        font-size: 21px;
    }

    .contact-number span {
        margin-left: 22px;
    }

    .product-card > a,
    .footer-legal > a {
        display: inline-flex;
        align-items: center;
        min-height: 44px;
    }

    .qr-close {
        width: 44px;
        height: 44px;
    }

    .footer-main {
        min-height: 0;
        padding: 28px 20px;
        border-radius: 28px;
    }

    .footer-legal {
        align-items: flex-start;
        flex-direction: column;
        gap: 12px;
    }

    .back-to-top {
        right: max(16px, env(safe-area-inset-right));
        bottom: max(16px, env(safe-area-inset-bottom));
        width: 50px;
        height: 50px;
    }

    .qr-dialog {
        padding: 44px 23px 28px;
        border-radius: 30px;
    }
}

@media (max-width: 360px) {
    .delivery-shell,
    .about-shell,
    .contact-shell {
        padding-right: 18px;
        padding-left: 18px;
    }
}

@media (max-width: 1060px) and (max-height: 520px) {
    .site-nav {
        justify-content: flex-start;
        min-height: calc(100svh - 20px);
        max-height: calc(100svh - 20px);
        padding-top: 78px;
        padding-bottom: 24px;
        overflow-y: auto;
    }

    .nav-link {
        font-size: clamp(24px, 5vh, 32px);
        line-height: 1.2;
    }

    .nav-cta {
        margin-top: 12px;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
    }

    /* 打字光标若显示，仍允许闪烁，不被上面的全局规则掐死 */
    .hero-title .type-cursor {
        display: none;
        animation: none !important;
    }

    [data-reveal] {
        opacity: 1;
        transform: none;
        transition-delay: 0ms !important;
    }

    .about-brand {
        opacity: 1;
        transform: none;
    }

    .contact-shell.is-visible .contact-number {
        animation: none;
    }
}