/* ===================================
   Petsoul 官网 - 温暖之光 · Warm Light
   深空 × 暖金 × 真实宠物
   Design reference: design-proposal/style-mockup.html
   =================================== */

/* ---------- 字体 ---------- */
@font-face {
    font-family: "Huiwen Mincho";
    src: url("../fonts/huiwen-mincho-subset.woff2?v=2") format("woff2");
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "Cinzel Decorative";
    src: url("../fonts/cinzel-decorative-400.woff2?v=1") format("woff2");
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "Cinzel Decorative";
    src: url("../fonts/cinzel-decorative-700.woff2?v=1") format("woff2");
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

/* ---------- 设计 Token ---------- */
:root {
    --bg: #1a1512;                /* 暖夜灰 · 页面背景 */
    --bg-2: #201a16;              /* 次级深背景 */
    --surface: #27201a;           /* 卡片表面 */
    --line: rgba(255, 255, 255, 0.09);
    --line-strong: rgba(255, 255, 255, 0.16);
    --text: #f7ede3;              /* 暖白 */
    --muted: #b8a89a;             /* 次级文字 */

    --peach: #f0a06c;             /* 主强调 · 蜜桃暖金 */
    --peach-deep: #e0894f;
    --peach-soft: #f6c39b;
    --sage: #7fb5a0;              /* 次强调 · 苔青 */

    --radius-lg: 20px;
    --radius-md: 12px;
    --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
    --container: 1180px;
    --pad: 1.25rem;
    --nav-height: 4.75rem;

    --font-serif: "Huiwen Mincho", "Noto Serif SC", "Songti SC", "STSong", Georgia, serif;
    --font-sans: "Huiwen Mincho", "PingFang SC", -apple-system, BlinkMacSystemFont, "Microsoft YaHei", sans-serif;
    --font-body: var(--font-sans);
    --font-geo: "Huiwen Mincho", "Questrial", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
    box-sizing: border-box;
}

* {
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    min-height: 100vh;
    overflow-x: hidden;
    color: var(--text);
    font-family: var(--font-sans);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background:
        linear-gradient(180deg, rgba(240, 160, 108, 0.22), rgba(26, 21, 18, 0.12) 34%, rgba(127, 181, 160, 0.12) 100%),
        linear-gradient(90deg, rgba(26, 21, 18, 0.34), rgba(26, 21, 18, 0.12) 50%, rgba(26, 21, 18, 0.26)),
        url("../images/官网头部背景参考风格5.jpg") center / cover no-repeat fixed;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -3;
    background:
        radial-gradient(ellipse at 80% 8%, rgba(240, 160, 108, 0.2), transparent 32%),
        radial-gradient(ellipse at 76% 34%, rgba(127, 181, 160, 0.14), transparent 34%),
        linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px),
        linear-gradient(180deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
    background-size: auto, auto, 88px 88px, 88px 88px;
    pointer-events: none;
}

body::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -2;
    background:
        linear-gradient(90deg, rgba(26, 21, 18, 0.06), transparent 42%, rgba(26, 21, 18, 0.08)),
        linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.08) 100%);
    pointer-events: none;
}

/* 鼠标拨开背景 · 墨迹擦除遮罩 */
.page-reveal-mask {
    position: fixed;
    inset: 0;
    z-index: 0;
    display: block;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
}

main,
.site-footer {
    position: relative;
    z-index: 1;
}

::selection {
    background: rgba(240, 160, 108, 0.35);
    color: var(--text);
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
    font-family: var(--font-body);
}

button {
    font: inherit;
    font-family: var(--font-body);
}

.container {
    width: min(100%, var(--container));
    margin: 0 auto;
    padding: 0 var(--pad);
}

/* ---------- 导航栏 ---------- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    height: var(--nav-height);
    background: rgba(26, 21, 18, 0.22);
    border-bottom: 1px solid transparent;
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    transition: background 220ms ease, border-color 220ms ease;
}

.site-header.scrolled {
    background: rgba(26, 21, 18, 0.66);
    border-bottom-color: var(--line);
}

.nav-shell {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.25rem;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
    color: var(--text);
    font-size: 1.35rem;
}

.brand-mark {
    width: 34px;
    height: 34px;
    display: block;
    border-radius: 50%;
    filter: drop-shadow(0 0 12px rgba(240, 160, 108, 0.38));
}

.brand-text {
    font-family: "Cinzel Decorative", Georgia, "Times New Roman", serif;
    font-weight: 700;
    letter-spacing: 0.10em;
    text-transform: uppercase;
}

.nav-links {
    display: none;
    align-items: center;
    gap: 1.85rem;
}

.nav-links a {
    color: var(--muted);
    font-size: 0.9rem;
    transition: color 180ms ease;
}

.nav-links a:hover {
    color: var(--text);
}

.quote-button,
.btn {
    min-height: 3rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid transparent;
    border-radius: 999px;
    font-size: 0.9rem;
    font-weight: 700;
    white-space: nowrap;
    transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
}

.quote-button {
    display: none;
    padding: 0 1.35rem;
    color: #1a1512;
    background: linear-gradient(135deg, var(--peach-soft), var(--peach-deep));
    box-shadow: 0 18px 42px rgba(224, 137, 79, 0.3);
}

.btn {
    padding: 0 1.45rem;
}

.quote-button:hover,
.btn:hover {
    transform: translateY(-2px);
}

.quote-button:hover {
    background: linear-gradient(135deg, #ffd2a6, var(--peach-deep));
    box-shadow: 0 22px 52px rgba(224, 137, 79, 0.42);
}

.btn-primary {
    color: #1a1512;
    background: linear-gradient(135deg, var(--peach-soft), var(--peach-deep));
    box-shadow: 0 18px 48px rgba(224, 137, 79, 0.34);
}

.btn-primary:hover {
    box-shadow: 0 22px 54px rgba(224, 137, 79, 0.46);
}

.btn-secondary {
    color: var(--text);
    border-color: var(--line-strong);
    background: rgba(255, 255, 255, 0.06);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

.nav-toggle {
    width: 44px;
    height: 44px;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--text);
    background: rgba(255, 255, 255, 0.08);
    cursor: pointer;
}

.nav-toggle span {
    width: 18px;
    height: 2px;
    display: block;
    border-radius: 999px;
    background: currentColor;
    transition: opacity 180ms ease, transform 220ms ease;
}

.nav-toggle.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 45;
    display: none;
    padding-top: 7rem;
    background: rgba(26, 21, 18, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.mobile-menu.open {
    display: grid;
    align-content: start;
    justify-items: center;
    gap: 1.4rem;
}

.mobile-menu a {
    color: var(--text);
    font-size: 1.6rem;
    font-weight: 900;
}

/* ---------- 区块基础 ---------- */
section {
    position: relative;
    padding: 5.2rem 0;
    scroll-margin-top: var(--nav-height);
}

.eyebrow {
    margin-bottom: 0.8rem;
    color: var(--peach);
    font-family: var(--font-geo);
    font-size: 0.76rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.section-heading {
    max-width: 720px;
    margin-bottom: 2.4rem;
}

.hero h1,
.section-heading h2,
.showcase-copy h2,
.data-copy h2,
.twin-copy h2,
.cta-copy h2 {
    color: var(--text);
    font-family: var(--font-serif);
    font-weight: 500;
    line-height: 1.18;
    letter-spacing: 0;
}

.section-heading h2,
.showcase-copy h2,
.data-copy h2,
.twin-copy h2 {
    font-size: clamp(2rem, 4vw, 3.1rem);
}

.section-heading p:not(.eyebrow),
.showcase-copy p:not(.eyebrow),
.data-copy p:not(.eyebrow),
.twin-copy p:not(.eyebrow),
.cta-copy p:not(.eyebrow) {
    margin-top: 0.75rem;
    color: var(--muted);
    font-family: var(--font-body);
    font-size: 1rem;
}

.g {
    color: var(--peach);
}

/* ---------- Hero ---------- */
.hero {
    min-height: 100vh;
    isolation: isolate;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: calc(var(--nav-height) + 2.5rem) 0 4rem;
}

.hero-layout {
    position: relative;
    z-index: 2;
    display: grid;
    gap: 2rem;
    align-items: center;
}

.hero-copy {
    max-width: 640px;
}

.hero-title {
    display: grid;
    gap: 0.04em;
    width: fit-content;
    max-width: 100%;
    font-size: clamp(2.6rem, 5.2vw, 4.6rem);
    line-height: 1.15;
}

.hero-title-line {
    display: block;
    width: fit-content;
    max-width: 100%;
    color: var(--text);
    white-space: nowrap;
    text-shadow: 0 0 22px rgba(255, 255, 255, 0.06);
}

.hero-desc {
    max-width: 440px;
    margin-top: 1.15rem;
    color: var(--muted);
    font-size: 1.05rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
    margin-top: 2rem;
}

.hero-prod {
    position: relative;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    min-height: clamp(280px, 32vw, 460px);
}

.hero-prod .prod-glow {
    position: absolute;
    left: 50%;
    bottom: 4%;
    width: min(340px, 70%);
    height: min(340px, 70%);
    transform: translateX(-50%);
    border-radius: 50%;
    background: radial-gradient(circle, rgba(240, 160, 108, 0.5), rgba(240, 160, 108, 0.06) 58%, transparent 72%);
    animation: breathe 5s ease-in-out infinite;
}

.hero-prod img {
    position: relative;
    height: clamp(250px, 30vw, 420px);
    object-fit: contain;
    filter: drop-shadow(0 30px 46px rgba(0, 0, 0, 0.55));
    animation: floaty 6s ease-in-out infinite;
}

/* ---------- 产品区 ---------- */
.product-grid {
    display: grid;
    gap: 1.25rem;
}

.prod-card {
    position: relative;
    padding: 2rem 1.6rem 1.8rem;
    --mx: 50%;
    --my: 50%;
    transition: transform 0.45s;
}

.prod-card::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 0;
    background: radial-gradient(circle at var(--mx) var(--my), rgba(240, 160, 108, 0.16), transparent 44%);
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
}

.prod-card > * {
    position: relative;
    z-index: 2;
}

.prod-card:hover {
    transform: translateY(-4px);
}

.prod-card:hover::before {
    opacity: 1;
}

.prod-glow {
    position: absolute;
    left: 50%;
    top: 110px;
    width: 190px;
    height: 190px;
    transform: translateX(-50%);
    border-radius: 50%;
    background: radial-gradient(circle, rgba(240, 160, 108, 0.45), rgba(240, 160, 108, 0.05) 60%, transparent 74%);
    animation: breathe 4.2s ease-in-out infinite;
}

.prod-img {
    height: 210px;
    display: flex;
    align-items: flex-end;
    justify-content: center;
}

.prod-img img {
    height: 100%;
    max-width: 100%;
    object-fit: contain;
    filter: drop-shadow(0 18px 30px rgba(0, 0, 0, 0.45));
}

.prod-card h3 {
    margin-top: 1.2rem;
    font-family: var(--font-serif);
    font-size: 1.3rem;
    font-weight: 500;
    color: var(--text);
}

.prod-card .prod-line {
    margin-top: 0.45rem;
    color: var(--muted);
    font-size: 0.93rem;
}

.prod-card a {
    display: inline-block;
    margin-top: 1rem;
    color: var(--peach);
    font-size: 0.9rem;
    font-weight: 600;
}

.prod-card a:hover {
    color: var(--peach-soft);
}

/* ---------- 产品展示 ---------- */
.showcase-layout,
.data-layout,
.twin-layout {
    display: grid;
    gap: 2rem;
    align-items: center;
}

.showcase-copy,
.data-copy,
.twin-copy {
    max-width: 600px;
}

.spec-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.8rem;
    margin-top: 1.6rem;
}

.spec-row div {
    padding: 1.05rem;
}

.spec-row strong {
    display: block;
    color: var(--peach);
    font-family: var(--font-geo);
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

.spec-row span {
    display: block;
    margin-top: 0.5rem;
    color: var(--muted);
    font-size: 0.86rem;
}

.project-mosaic {
    display: grid;
    gap: 0.85rem;
}

.sample-gallery {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: center;
    transition: grid-template-columns 420ms cubic-bezier(0.22, 1, 0.36, 1);
}

.sample-gallery:has(.sample-image:nth-child(1):hover) {
    grid-template-columns: minmax(0, 2.55fr) minmax(56px, 0.42fr) minmax(56px, 0.42fr);
}

.sample-gallery:has(.sample-image:nth-child(2):hover) {
    grid-template-columns: minmax(56px, 0.42fr) minmax(0, 2.55fr) minmax(56px, 0.42fr);
}

.sample-gallery:has(.sample-image:nth-child(3):hover) {
    grid-template-columns: minmax(56px, 0.42fr) minmax(56px, 0.42fr) minmax(0, 2.55fr);
}

.sample-image {
    width: 100%;
    height: clamp(300px, 36vw, 460px);
    object-fit: contain;
    object-position: center bottom;
    padding: 0.6rem;
    cursor: pointer;
    transform-origin: center bottom;
    transition:
        transform 420ms cubic-bezier(0.22, 1, 0.36, 1),
        opacity 320ms ease,
        filter 320ms ease;
}

.sample-gallery:has(.sample-image:hover) .sample-image:not(:hover) {
    opacity: 0.38;
    filter: saturate(0.72);
    transform: scale(0.88);
}

.sample-image:hover {
    z-index: 2;
    transform: scale(1.06);
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.35)) drop-shadow(0 0 24px rgba(240, 160, 108, 0.22));
}

/* ---------- 数据区 ---------- */
.data-console {
    padding: 2.4rem 1.6rem 2rem;
}

.data-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 0.9rem;
    margin-top: 1.7rem;
}

.data-stats .stat {
    flex: 1;
    min-width: 120px;
    padding: 1.1rem 1rem;
}

.data-stats .stat strong {
    display: block;
    color: var(--peach);
    font-family: var(--font-geo);
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

.data-stats .stat span {
    display: block;
    margin-top: 0.5rem;
    color: var(--muted);
    font-size: 0.86rem;
}

/* 呼吸光点轨道 */
.orbit {
    position: relative;
    width: min(280px, 64vw);
    height: min(280px, 64vw);
    margin: 0 auto;
}

.orbit-track {
    position: absolute;
    inset: 0;
    animation: spin 32s linear infinite;
}

.orbit-track .slot {
    position: absolute;
    inset: 0;
}

.orbit-track .slot i {
    position: absolute;
    left: 50%;
    top: 3.5%;
    width: 11px;
    height: 11px;
    margin: -5.5px 0 0 -5.5px;
    border-radius: 50%;
    background: var(--peach);
    box-shadow: 0 0 14px 3px rgba(240, 160, 108, 0.75);
    animation: breathe-abs 3.2s ease-in-out infinite;
}

.orbit-pet {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 44%;
    height: 44%;
    margin: -22% 0 0 -22%;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid rgba(240, 160, 108, 0.45);
    animation: breathe-abs 5s ease-in-out infinite;
}

.orbit-pet img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.orbit-cap {
    margin-top: 1.3rem;
    text-align: center;
    color: var(--muted);
    font-size: 0.92rem;
}

.orbit-cap b {
    color: var(--peach);
    font-family: var(--font-geo);
}

/* ---------- 数字孪生 ---------- */
.twin-visual {
    min-height: 320px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.orbit-sm {
    width: min(230px, 58vw);
    height: min(230px, 58vw);
}

.twin-copy p:not(.eyebrow) {
    margin-top: 0.9rem;
}

/* ---------- 场景区 ---------- */
.scene-grid {
    display: grid;
    gap: 1.25rem;
}

.scene-card {
    min-height: 230px;
    padding: 1.5rem;
    position: relative;
    overflow: hidden;
    isolation: isolate;
    --mx: 50%;
    --my: 50%;
    transition: transform 0.3s;
}

.scene-card::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 0;
    background: radial-gradient(circle at var(--mx) var(--my), rgba(240, 160, 108, 0.16), transparent 44%);
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
}

.scene-card > * {
    position: relative;
    z-index: 2;
}

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

.scene-card:hover::before {
    opacity: 1;
}

.scene-card h3 {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    font-weight: 500;
    color: var(--text);
}

.scene-card p {
    margin-top: 0.6rem;
    color: var(--muted);
    font-size: 0.93rem;
}

/* ---------- 隐私信任 ---------- */
.trust-grid {
    display: grid;
    gap: 1.25rem;
}

.trust-card {
    padding: 1.7rem 1.6rem;
}

.trust-ico {
    font-size: 1.6rem;
    margin-bottom: 0.8rem;
}

.trust-card h3 {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--sage);
}

.trust-card p {
    margin-top: 0.5rem;
    color: var(--muted);
    font-size: 0.92rem;
}

/* ---------- 联系 CTA ---------- */
.cta-strip {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1.4rem;
    padding: 2.8rem 3rem;
}

.cta-copy {
    max-width: 560px;
}

.cta-copy h2 {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
}

.contact-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
}

/* ---------- 页脚 ---------- */
.site-footer {
    padding: 1.5rem 0;
    border-top: 1px solid var(--line);
    background: var(--bg-2);
}

.footer-layout {
    display: grid;
    gap: 0.9rem;
    font-family: var(--font-body);
}

.footer-layout strong {
    display: block;
    font-family: "Cinzel Decorative", Georgia, "Times New Roman", serif;
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--text);
}

.footer-layout p,
.footer-layout small {
    color: var(--muted);
}

/* ---------- 底部备案信息栏 ---------- */
.footer-legal-bar {
    position: relative;
    z-index: 1;
    padding: 0.9rem 0;
    border-top: 1px solid var(--line);
    background: #120d0a;
    font-family: var(--font-body);
    font-size: 0.8rem;
    color: #94877a;
}

.footer-legal-bar .legal-copy {
    font: inherit;
    color: #c9b9aa;
}

.footer-legal-bar .container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    row-gap: 0.35rem;
    text-align: center;
}

.footer-legal-bar .legal-item {
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
}

.footer-legal-bar .legal-item + .legal-item {
    margin-left: 0.9rem;
}

.footer-legal-bar .legal-item + .legal-item::before {
    content: "|";
    color: rgba(255, 255, 255, 0.22);
    margin-right: 0.9rem;
}

.footer-legal-bar .legal-link,
.footer-legal-bar .legal-license {
    color: #c9b9aa;
    text-decoration: none;
    transition: color 180ms ease, text-decoration-color 180ms ease;
}

.footer-legal-bar .legal-link:hover,
.footer-legal-bar .legal-link:focus-visible,
.footer-legal-bar .legal-license:hover {
    color: var(--peach);
    text-decoration: underline;
}

.footer-legal-bar .legal-license {
    cursor: pointer;
}

.footer-legal-bar .legal-emblem {
    width: 20px;
    height: 20px;
    margin-right: 5px;
    vertical-align: middle;
}

/* ---------- 明信片弹窗 ---------- */
.postcard-modal {
    position: fixed;
    inset: 0;
    z-index: 20;
    display: grid;
    place-items: center;
    padding: 1.25rem;
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    transition: opacity 260ms ease, visibility 260ms ease;
}

.postcard-modal.is-open {
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
}

.postcard-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(26, 21, 18, 0.76);
    backdrop-filter: blur(10px);
}

.postcard-dialog {
    width: min(760px, 100%);
    min-height: 510px;
    position: relative;
    display: grid;
    align-items: end;
    isolation: isolate;
    transform: translateY(22px) scale(0.97);
    transition: transform 360ms cubic-bezier(0.22, 1, 0.36, 1);
}

.postcard-modal.is-open .postcard-dialog {
    transform: translateY(0) scale(1);
}

.postcard-paper {
    position: relative;
    z-index: 1;
    min-height: 390px;
    padding: 3rem 3rem 2.5rem;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.72);
    border-radius: 6px;
    color: #211c2a;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.38), transparent 35%), #f7e9df;
    box-shadow: 0 32px 90px rgba(0, 0, 0, 0.42), 0 0 48px rgba(240, 160, 108, 0.22);
}

.postcard-paper::before,
.postcard-paper::after {
    content: "";
    position: absolute;
    pointer-events: none;
}

.postcard-paper::before {
    inset: 1rem;
    border: 1px dashed rgba(33, 28, 42, 0.24);
    border-radius: 2px;
}

.postcard-paper::after {
    right: -8rem;
    bottom: -9rem;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(127, 181, 160, 0.3), transparent 68%);
}

.postcard-kicker,
.postcard-stamp,
.postcard-signature {
    font-family: "Cinzel Decorative", Georgia, "Times New Roman", serif;
    letter-spacing: 0.12em;
}

.postcard-kicker {
    position: relative;
    z-index: 1;
    color: var(--sage);
    font-size: 0.78rem;
    font-weight: 700;
}

.postcard-paper h2 {
    position: relative;
    z-index: 1;
    max-width: none;
    margin-top: 4.5rem;
    color: #211c2a;
    font-family: var(--font-serif);
    font-size: clamp(1.7rem, 3.5vw, 2.8rem);
    font-weight: 500;
    line-height: 1.2;
    white-space: nowrap;
}

.postcard-vision,
.postcard-body,
.postcard-signature {
    position: relative;
    z-index: 1;
}

.postcard-vision {
    margin-top: 1.1rem;
    color: var(--peach-deep);
    font-family: var(--font-serif);
    font-size: clamp(1.45rem, 3vw, 2rem);
}

.postcard-body {
    max-width: 470px;
    margin-top: 1.15rem;
    color: rgba(33, 28, 42, 0.72);
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.85;
}

.postcard-signature {
    margin-top: 2rem;
    color: rgba(33, 28, 42, 0.62);
    font-size: 0.78rem;
}

.postcard-stamp {
    position: absolute;
    top: 2rem;
    right: 2rem;
    z-index: 2;
    width: 86px;
    height: 86px;
    display: grid;
    place-items: center;
    border: 1px solid rgba(33, 28, 42, 0.35);
    color: #211c2a;
    font-size: 0.58rem;
    line-height: 1.45;
    text-align: center;
    transform: rotate(4deg);
}

.postcard-cat {
    position: absolute;
    right: clamp(1rem, 7vw, 4.5rem);
    top: -2.2rem;
    z-index: 3;
    width: clamp(210px, 36vw, 330px);
    filter: drop-shadow(0 20px 16px rgba(31, 24, 36, 0.24));
    pointer-events: none;
}

body.postcard-open {
    overflow: hidden;
}

/* ---------- 滚动渐入 ---------- */
[data-animate] {
    opacity: 1;
    transform: none;
    transition: opacity 680ms ease, transform 680ms cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- 动画 ---------- */
@keyframes breathe {
    0%, 100% {
        opacity: 0.55;
        transform: translateX(-50%) scale(1);
    }
    50% {
        opacity: 1;
        transform: translateX(-50%) scale(1.07);
    }
}

@keyframes breathe-abs {
    0%, 100% {
        opacity: 0.55;
        transform: scale(1);
    }
    50% {
        opacity: 1;
        transform: scale(1.07);
    }
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes floaty {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-12px);
    }
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
    .product-grid,
    .scene-grid,
    .trust-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .footer-layout {
        grid-template-columns: 1.2fr auto;
        align-items: end;
    }

    .footer-layout small {
        grid-column: 1 / -1;
    }
}

@media (min-width: 880px) {
    [data-animate] {
        opacity: 0;
        transform: translateY(24px);
    }

    [data-animate].visible {
        opacity: 1;
        transform: none;
    }

    .nav-links,
    .quote-button {
        display: flex;
    }

    .nav-toggle {
        display: none;
    }

    .hero-layout {
        grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
        justify-content: space-between;
    }

    .showcase-layout,
    .data-layout,
    .twin-layout {
        grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    }
}

@media (max-width: 640px) {
    :root {
        --nav-height: 4.3rem;
        --pad: 1rem;
    }

    section {
        padding: 4.2rem 0;
    }

    .hero {
        align-items: flex-start;
        padding-top: calc(var(--nav-height) + 1.4rem);
        padding-bottom: 3.2rem;
    }

    .hero-layout {
        gap: 2rem;
    }

    .hero-title {
        font-size: clamp(2.4rem, 12vw, 3.4rem);
    }

    .hero-title-line {
        white-space: normal;
    }

    .hero-actions,
    .contact-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-prod {
        min-height: 260px;
    }

    .hero-prod img {
        height: 230px;
    }

    .prod-img {
        height: 180px;
    }

    .prod-glow {
        top: 96px;
        width: 160px;
        height: 160px;
    }

    .spec-row,
    .project-mosaic {
        grid-template-columns: 1fr;
    }

    .sample-gallery {
        grid-template-columns: 1fr;
    }

    .sample-gallery:has(.sample-image:nth-child(1):hover),
    .sample-gallery:has(.sample-image:nth-child(2):hover),
    .sample-gallery:has(.sample-image:nth-child(3):hover) {
        grid-template-columns: 1fr;
    }

    .sample-image {
        height: min(92vw, 430px);
    }

    .sample-gallery:has(.sample-image:hover) .sample-image:not(:hover),
    .sample-image:hover {
        opacity: 1;
        filter: none;
        transform: none;
    }

    .data-stats {
        flex-direction: column;
    }

    .data-stats .stat {
        min-width: 0;
    }

    .twin-visual {
        min-height: 280px;
    }

    .cta-strip {
        padding: 2.2rem 1.4rem;
    }

    .postcard-dialog {
        min-height: 510px;
    }

    .postcard-paper {
        min-height: 420px;
        padding: 2.5rem 1.35rem 2rem;
    }

    .postcard-paper h2 {
        max-width: none;
        margin-top: 4rem;
        font-size: clamp(1.25rem, 5.2vw, 1.6rem);
    }

    .postcard-cat {
        right: -0.5rem;
        top: -1.3rem;
        width: 220px;
    }

    .postcard-stamp {
        top: 1.4rem;
        right: 1.2rem;
        width: 68px;
        height: 68px;
        font-size: 0.5rem;
    }
}

/* ---------- 降级：减少动态效果 / 无鼠标 ---------- */
@media (prefers-reduced-motion: reduce) {
    .page-reveal-mask {
        display: none;
    }

    *,
    *::before,
    *::after {
        animation-duration: 1ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 1ms !important;
        scroll-behavior: auto !important;
    }
}

@media (hover: none) {
    .page-reveal-mask {
        display: none;
    }
}