/* ============================================================
   电子请柬 · 样式
   版式与动效参照 adovasio.it：米色底、细衬线标题、12 栏网格、
   开场叠图展开、滚动视差、居中悬停章节名、揭幕式页脚。
   ============================================================ */

:root {
    --bg: #f5f2ed;
    --bg-deep: #dfdcd6;
    --ink: #232323;
    --ink-soft: #55534f;
    --white: #fdfcfa;
    --error: #a1362b;

    --serif: "LXGW WenKai", "Kaiti SC", "STKaiti", "KaiTi", "楷体", serif;
    --sans: "LXGW WenKai", "Kaiti SC", "STKaiti", "KaiTi", "楷体", sans-serif;

    --ease-out: cubic-bezier(0.19, 1, 0.22, 1);
    --ease-in-out: cubic-bezier(0.87, 0, 0.13, 1);
    --ease-sine: cubic-bezier(0.445, 0.05, 0.55, 0.95);
    --ease-soft: cubic-bezier(0.25, 0.46, 0.45, 0.94);

    --header-h: 9.7rem;
    --gutter: 3rem;
}

@media (max-width: 767px) {
    :root {
        --header-h: 5.5rem;
        --gutter: 1.5rem;
    }
}

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

html {
    font-size: 10px;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    -webkit-tap-highlight-color: transparent;
    text-rendering: optimizeLegibility;
}

html.lenis,
html.lenis body {
    height: auto;
}
.lenis.lenis-smooth {
    scroll-behavior: auto !important;
}
.lenis.lenis-stopped {
    overflow: hidden;
}

body {
    background: var(--bg);
    color: var(--ink);
    font: 400 1.6rem/1.5 var(--sans);
    overflow-x: hidden;
}

/* 统一改为等高数字（避免 11 显示成 II）；font 简写会重置该属性，所以用 !important */
* {
    font-variant-numeric: lining-nums !important;
}
.info__cd-item b,
.schedule__time,
.cal__day {
    font-variant-numeric: lining-nums tabular-nums !important;
}

h1,
h2,
h3,
p {
    text-wrap: pretty;
}

html.is-loading body {
    overflow: hidden;
}

::selection {
    color: var(--white);
    background: var(--ink);
}

img {
    display: block;
    max-width: 100%;
}
a {
    color: inherit;
    text-decoration: none;
}
button {
    font: inherit;
    color: inherit;
    background: none;
    border: 0;
    cursor: pointer;
}
ul,
ol {
    list-style: none;
}
input,
select,
textarea {
    font: inherit;
    color: inherit;
}

:focus-visible {
    outline: 1px solid currentColor;
    outline-offset: 4px;
}

.container {
    width: 100%;
    max-width: 2060px;
    margin: 0 auto;
    padding: 0 var(--gutter);
}

.grid-12 {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1rem;
}
@media (min-width: 768px) {
    .grid-12 {
        grid-template-columns: repeat(12, 1fr);
    }
}

/* ---------- 逐字切换（菜单按钮、章节名） ---------- */
.letters {
    display: inline-flex;
    overflow: hidden;
}
.letters__c {
    position: relative;
    display: inline-block;
    transition: transform 0.6s var(--ease-out);
    transition-delay: calc(var(--i) * 40ms);
}
.letters__c::after {
    content: attr(data-c);
    position: absolute;
    left: 0;
    top: 100%;
}
.header__burger:hover .letters__c {
    transform: translateY(-100%);
}

/* ---------- 胶囊按钮 ---------- */
.pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    font: 400 1.6rem/1 var(--sans);
    letter-spacing: 0.04em;
    white-space: nowrap;
    transition:
        color 0.25s var(--ease-soft),
        background-color 0.25s var(--ease-soft),
        transform 0.2s var(--ease-soft);
}
.pill > span {
    padding: 1.6rem 2.5rem;
}
.pill--l {
    font-size: 1.8rem;
}
.pill--l > span {
    padding: 1.8rem 3rem;
}
.pill:active {
    transform: scale(0.98);
}

.pill--light {
    background: var(--bg);
    color: var(--ink);
}
.pill--dark {
    background: var(--ink);
    color: var(--bg);
}
@media (hover: hover) {
    .pill--light:hover {
        background: var(--ink);
        color: var(--bg);
    }
    .pill--dark:hover {
        background: var(--white);
        color: var(--ink);
    }
}

.link-icon {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
}
.link-icon__icon,
[data-icon] {
    display: inline-flex;
    width: 1.8rem;
    height: 1.8rem;
}
[data-icon] svg {
    width: 100%;
    height: 100%;
}
.link-icon__icon {
    transition: transform 0.4s var(--ease-out);
}
.link-icon:hover .link-icon__icon {
    transform: translate(2px, -2px);
}

/* ============================================================
   开场加载
   ============================================================ */
.preloader {
    position: fixed;
    inset: 0;
    z-index: 3000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    font: 300 3.5rem/1.15 var(--serif);
    transition:
        opacity 0.7s var(--ease-soft),
        visibility 0.7s;
}
.preloader.is-done {
    opacity: 0;
    visibility: hidden;
}

.preloader__counter {
    position: absolute;
    top: 50%;
    left: 4rem;
    display: flex;
    height: 1.15em;
    overflow: hidden;
    transform: translateY(-50%);
}
.preloader__col {
    display: block;
    width: 0.55em;
    overflow: hidden;
    transition: width 0.4s var(--ease-out);
}
.preloader__col[data-col="0"] {
    width: 0;
}
.preloader__col[data-col="0"].is-on {
    width: 0.55em;
}
.preloader__strip {
    display: flex;
    flex-direction: column;
    transition: transform 0.55s var(--ease-out);
}
.preloader__strip span {
    display: block;
    height: 1.15em;
    text-align: center;
}

.preloader__percent {
    position: absolute;
    top: 50%;
    right: 3rem;
    transform: translateY(-50%);
}

.preloader__mark {
    position: relative;
    font: 300 clamp(4.4rem, 7vw, 12rem)/1.1 var(--serif);
    white-space: nowrap;
    letter-spacing: 0.02em;
}
.preloader__mark-base {
    opacity: 0.2;
}
.preloader__mark-fill {
    position: absolute;
    inset: 0;
    clip-path: inset(0 calc(100% - var(--load, 0%)) 0 0);
    transition: clip-path 0.55s var(--ease-out);
}

@media (max-width: 767px) {
    .preloader__counter {
        top: 3rem;
        left: 50%;
        transform: translateX(-50%);
    }
    .preloader__percent {
        top: auto;
        bottom: 3rem;
        right: 50%;
        transform: translateX(50%);
    }
    .preloader__mark {
        font-size: 3.6rem;
    }
}

/* ============================================================
   顶部 & 菜单
   ============================================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    width: 100%;
    height: var(--header-h);
    color: var(--ink);
    pointer-events: none;
    transition:
        color 0.5s var(--ease-soft),
        opacity 0.8s var(--ease-soft);
}
.header.is-light {
    color: var(--white);
}
.header.is-menu-open {
    color: var(--ink);
}
html.is-loading .header,
html.is-intro .header {
    opacity: 0;
}

.header__inner {
    position: relative;
    height: 100%;
}

.header__logo {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font: 300 2.4rem/1 var(--serif);
    letter-spacing: 0.06em;
    white-space: nowrap;
    pointer-events: auto;
    transition: opacity 0.3s var(--ease-soft);
}
.header__logo em {
    font-style: italic;
    padding: 0 0.1em;
}
.header__logo:hover {
    opacity: 0.75;
}

.header__burger {
    position: absolute;
    top: 50%;
    right: var(--gutter);
    display: flex;
    align-items: center;
    gap: 3rem;
    height: 4.4rem;
    font-size: 1.6rem;
    letter-spacing: 0.1em;
    pointer-events: auto;
    transform: translateY(-50%);
}

.burger-bars > span {
    position: relative;
    display: block;
    width: 5rem;
    height: 1px;
    background: currentColor;
}
.burger-bars > span::before,
.burger-bars > span::after {
    content: "";
    position: absolute;
    left: 0;
    width: 100%;
    height: 1px;
    background: currentColor;
    transition:
        transform 0.75s var(--ease-out),
        opacity 0.4s;
}
.burger-bars > span::before {
    bottom: calc(100% + 10px);
}
.burger-bars > span::after {
    top: calc(100% + 10px);
}
.header__burger:hover .burger-bars > span::before {
    transform: translateY(4px);
}
.header__burger:hover .burger-bars > span::after {
    transform: translateY(-4px);
}
.is-menu-open .burger-bars > span {
    background: transparent;
}
.is-menu-open .burger-bars > span::before {
    transform: translateY(11px) rotate(16deg);
}
.is-menu-open .burger-bars > span::after {
    transform: translateY(-11px) rotate(-16deg);
}

@media (max-width: 767px) {
    .header {
        /* 刘海屏：顶部栏整体下移，避免菜单按钮被状态栏/圆角裁掉 */
        height: calc(var(--header-h) + env(safe-area-inset-top));
        padding-top: env(safe-area-inset-top);
        transition:
            color 0.5s var(--ease-soft),
            background-color 0.5s var(--ease-soft),
            opacity 0.8s var(--ease-soft),
            transform 0.45s var(--ease-soft);
        will-change: transform;
    }
    /* 下滑时顶部栏（含标题）随手势收起，上滑 / 回到顶部再出现 */
    .header.is-hidden {
        transform: translateY(-100%);
    }
    .header.is-menu-open {
        transform: none;
    }
    /* 手机端顶部栏始终有一层米色底 + 深色文字：
       浅色首屏（天空）上白色菜单按钮会看不清，加底色后始终清晰 */
    .header,
    .header.is-light {
        background: rgba(245, 242, 237, 0.92);
        color: var(--ink);
    }
    .header__logo {
        font-size: 2rem;
    }
    .header__burger {
        right: max(var(--gutter), env(safe-area-inset-right));
        width: 4.4rem;
        height: 4.4rem;
        justify-content: center;
    }
    .header__burger .letters {
        display: none;
    }
    .burger-bars > span {
        width: 3.4rem;
    }
    .burger-bars > span::before {
        bottom: calc(100% + 7px);
    }
    .burger-bars > span::after {
        top: calc(100% + 7px);
    }
    .is-menu-open .burger-bars > span::before {
        transform: translateY(8px) rotate(16deg);
    }
    .is-menu-open .burger-bars > span::after {
        transform: translateY(-8px) rotate(-16deg);
    }
}

.menu {
    position: fixed;
    inset: 0;
    z-index: 990;
    pointer-events: none;
}
.menu.is-open {
    pointer-events: auto;
}

.menu__backdrop {
    position: absolute;
    inset: 0;
    background: var(--bg-deep);
    opacity: 0;
    transition: opacity 1s var(--ease-out);
}
.menu.is-open .menu__backdrop {
    opacity: 0.75;
}

.menu__grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 1rem;
    height: 0;
}
.menu__panel {
    position: relative;
    grid-column: 3 / span 8;
    padding-top: var(--header-h);
    background: var(--white);
    transform: translateY(calc(-100% - 1px));
    transition: transform 1s var(--ease-out);
}
.menu.is-open .menu__panel {
    transform: translateY(0);
}

.menu__links {
    position: relative;
    z-index: 2;
    padding: clamp(8vh, 14vw, 16vh) 0;
    text-align: center;
    font: 300 clamp(3.6rem, 3.6vw, 5.6rem)/1.5 var(--serif);
}
.menu__links li {
    overflow: hidden;
}
.menu__links a {
    display: inline-block;
    padding: 0.2rem 1rem;
    transform: translateY(105%);
    transition:
        opacity 0.4s var(--ease-soft),
        transform 0.9s var(--ease-out);
}
.menu.is-open .menu__links a {
    transform: none;
}
.menu.is-open .menu__links li:nth-child(1) a {
    transition-delay: 0s, 0.25s;
}
.menu.is-open .menu__links li:nth-child(2) a {
    transition-delay: 0s, 0.31s;
}
.menu.is-open .menu__links li:nth-child(3) a {
    transition-delay: 0s, 0.37s;
}
.menu.is-open .menu__links li:nth-child(4) a {
    transition-delay: 0s, 0.43s;
}

.menu__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 3rem 2.6rem;
    font-size: 1.5rem;
}
.menu__meta {
    color: var(--ink-soft);
}

@media (max-width: 767px) {
    .menu__grid {
        grid-template-columns: 1fr;
    }
    .menu__panel {
        grid-column: 1 / -1;
        margin: 0 calc(var(--gutter) * -1);
    }
    .menu__links {
        padding: 6vh 0 7vh;
        font-size: 3.4rem;
    }
    .menu__footer {
        flex-direction: column;
        gap: 1.6rem;
        padding-bottom: 3rem;
    }
}

/* ---------- 悬停浮图列表（菜单、故事） ---------- */
.hover-list {
    position: relative;
}
.hover-list__img {
    position: absolute;
    top: 0;
    z-index: 1;
    width: 19%;
    aspect-ratio: 3 / 4;
    pointer-events: none;
    transform: translateY(calc(var(--y, 0px) - 50%));
    transition: transform 0.9s var(--ease-out);
}
.hover-list.is-snap .hover-list__img {
    transition: none;
}
.hover-list__img--left {
    left: 4%;
}
.hover-list__img--right {
    right: 4%;
}
.hover-list__img img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    clip-path: inset(100% 0 0 0);
    transform: scale(1.12);
    transition:
        clip-path 0.9s var(--ease-out),
        transform 1.2s var(--ease-out);
}
.hover-list__img img.is-on {
    clip-path: inset(0 0 0 0);
    transform: scale(1);
}
.hover-list__img--right img {
    transition-delay: 0.06s;
}
.hover-list.is-hovering [data-hover-item] {
    opacity: 0.25;
}
.hover-list.is-hovering [data-hover-item].is-hover {
    opacity: 1;
}

@media (hover: none), (max-width: 1023px) {
    .hover-list__img {
        display: none;
    }
}

/* ============================================================
   首屏
   ============================================================ */
.hero {
    position: relative;
    z-index: 2;
    height: clamp(160vh, 120vw, 210vh);
    overflow: hidden;
    background: var(--bg);
    /* 开场结束后底色由浅色（--bg）平滑过渡到深色（--ink），避免白→黑突变 */
    transition: background-color 1.2s var(--ease-soft);
}
html.is-ready .hero {
    background: var(--ink);
}

.hero__stage {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
}

.hero__media {
    position: absolute;
    inset: 0;
    z-index: 2;
    /* 不透明底色与首屏底色一致：揭幕时整块盖住闪屏，
       闪屏不会从大图四周的留白里透出来 */
    background: var(--bg);
    transition: background-color 1.2s var(--ease-soft);
    transform: translateY(calc(var(--p, 0) * 50%));
    opacity: calc(1 - var(--p, 0) * 0.75);
    /* transform 用于视差；clip-path 用于开场揭幕，均提升到合成层减少卡顿 */
    will-change: transform, clip-path;
}
html.is-ready .hero__media {
    background: var(--ink);
}
.hero__media img {
    width: 100%;
    height: 100%;
    /* contain：完整显示整张照片，确保新郎新娘都同框；四周留白由深色背景填充 */
    object-fit: contain;
    object-position: center;
}
.hero__scrim {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(20, 19, 17, 0.28) 0%,
        rgba(20, 19, 17, 0.08) 40%,
        rgba(20, 19, 17, 0.34) 100%
    );
    opacity: 0;
    transition: opacity 1.2s var(--ease-soft);
}
html.is-ready .hero__scrim {
    opacity: 1;
}

.intro-stack {
    position: absolute;
    inset: 0;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}
.intro-frame {
    position: absolute;
    inset: 0;
    overflow: hidden;
    /* 图片 contain 留白处填底色：否则宽屏下每张闪屏四周的留白会透出后一张闪屏 */
    background: var(--bg);
    clip-path: inset(0 50% 0 50%);
    /* 只提升 .intro-frame 这一层：clip-path 与 scale 都作用在它身上，
       子图不再单独建层，避免 3 张全屏图同时产生 6 个合成层导致掉帧 */
    transform: scale(1.35);
    will-change: transform, clip-path;
    backface-visibility: hidden;
}
.intro-frame img {
    width: 100%;
    height: 100%;
    /* contain：整张照片完整显示，不裁切；多出的部分由底色填充 */
    object-fit: contain;
}
html.is-ready .intro-stack {
    display: none;
}
/* 电脑端：开场闪屏不做满屏，宽度对齐首屏大图 contain 后的显示宽度。
   --intro-w 由 main.js 量取首屏图片实际显示宽度写入；手机端不加此约束，保持满屏。 */
@media (min-width: 768px) {
    .intro-stack {
        right: auto;
        left: 50%;
        width: var(--intro-w, 100%);
        transform: translateX(-50%);
    }
}

.hero__words {
    position: absolute;
    inset: 0;
    z-index: 3;
    display: flex;
    flex-direction: column;
    justify-content: center;
    width: calc(100% - var(--gutter) * 2);
    margin: 0 auto;
    padding-top: 4rem;
    color: var(--white);
    font: 300 clamp(5.5rem, min(11vw, 19vh), 19rem)/1.18 var(--serif);
    letter-spacing: 0.02em;
    pointer-events: none;
}
.hero__line {
    display: flex;
    justify-content: center;
    overflow: hidden;
    will-change: transform;
}
.hero__line:nth-child(1) {
    transform: translateY(calc(-42vw * var(--p, 0)));
}
.hero__line:nth-child(2) {
    justify-content: flex-start;
    margin-top: -2rem;
    transform: translateX(calc(28% * var(--p, 0)))
        translateY(calc(-32vw * var(--p, 0)));
}
.hero__line:nth-child(3) {
    justify-content: flex-end;
    margin-top: -2rem;
    transform: translateX(calc(-28% * var(--p, 0)))
        translateY(calc(-22vw * var(--p, 0)));
}
.hero__line:nth-child(4) {
    margin-top: -2rem;
}

.hero__char {
    display: inline-block;
    transform: translateY(110%);
    transition: transform 1.1s var(--ease-sine);
    transition-delay: calc(var(--line) * 0.15s + var(--i) * 0.06s);
}
html.is-ready .hero__char {
    transform: translateY(0);
}

.hero__content {
    position: absolute;
    left: 50%;
    bottom: 22%;
    z-index: 4;
    display: flex;
    flex-direction: column;
    align-items: center;
    row-gap: 12rem;
    color: var(--white);
    text-align: center;
    opacity: 0;
    transform: translate(-50%, 30%);
    transition: opacity 0.6s var(--ease-soft) 0.9s;
}
html.is-ready .hero__content {
    opacity: 1;
}

.parallax-frame {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}
.parallax-frame img {
    position: absolute;
    top: -7.5%;
    left: 0;
    width: 100%;
    height: 115%;
    object-fit: cover;
    /* 不常驻 will-change：9 张图常驻会各自建层，闲置时反而占显存、拖慢滚动。
       视差用 translate3d，滚动时浏览器会自动合成。 */
}

.hero__text {
    position: relative;
    width: 100%;
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 1rem;
}
.hero__text::before {
    content: "";
    position: absolute;
    top: -2.5rem;
    left: 0;
    width: 100%;
    height: 1px;
    background: currentColor;
    opacity: 0.9;
}
.hero__text p {
    grid-column: 3 / span 8;
    font: 300 clamp(2.6rem, 3.1vw, 5.5rem)/1.3 var(--serif);
    letter-spacing: 0.04em;
}
.hero__text .hero__date {
    margin-top: 1.6rem;
    font: 400 clamp(1.5rem, 1.15vw, 1.9rem)/1.4 var(--sans);
    letter-spacing: 0.14em;
    opacity: 0.85;
}
.hero__cta {
    grid-column: 1 / -1;
    margin-top: 5rem;
}

.hero__project {
    position: absolute;
    bottom: 0;
    left: 50%;
    z-index: 4;
    display: flex;
    gap: 8rem;
    align-items: center;
    color: var(--white);
    font-size: 1.7rem;
    letter-spacing: 0.06em;
    white-space: nowrap;
    opacity: 0;
    transform: translateX(-50%);
    transition: opacity 0.6s var(--ease-soft) 1.1s;
}
html.is-ready .hero__project {
    opacity: 1;
}
.hero__project > * {
    padding: 3.5rem 0;
}
.hero__project span {
    position: relative;
}
.hero__project span::after {
    content: "";
    position: absolute;
    left: 0;
    top: 72%;
    width: 100%;
    height: 1px;
    background: currentColor;
    transform: scaleX(0);
    transform-origin: 0 50%;
    transition: transform 0.35s var(--ease-soft);
}
.hero__project:hover span::after {
    transform: scaleX(1);
}

@media (max-width: 767px) {
    .hero {
        height: auto;
        padding-bottom: 8rem;
    }
    .hero__stage {
        position: relative;
        height: 100svh;
        min-height: 56rem;
    }
    .hero__words {
        font-size: 16vw;
        padding-top: 0;
    }
    .hero__line:nth-child(n) {
        margin-top: -0.6rem;
    }
    .hero__line:nth-child(1) {
        margin-top: 0;
    }
    .hero__content {
        position: relative;
        left: auto;
        bottom: auto;
        row-gap: 6rem;
        padding: 2rem var(--gutter) 0;
        transform: none;
    }
    .hero__text {
        display: block;
        padding-top: 3rem;
    }
    .hero__text::before {
        top: 0;
    }
    .hero__text p {
        font-size: 2.2rem;
    }
    .hero__cta {
        margin-top: 3.2rem;
    }
    .hero__project {
        display: none;
    }
}

/* ============================================================
   婚纱照章节
   ============================================================ */
.chapters {
    position: relative;
    z-index: 1;
    background: var(--bg);
}

.chapters__list {
    display: flex;
    flex-direction: column;
    gap: 48.6rem;
    padding: 75vh 0;
}

.chapters__name {
    position: fixed;
    inset: 0;
    z-index: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 var(--gutter);
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    transition:
        opacity 0.5s var(--ease-soft),
        visibility 0.5s;
}
.chapters__name.is-visible {
    opacity: 1;
    visibility: visible;
}

.chapters__name-track {
    position: relative;
    display: flex;
    justify-content: center;
    width: calc(var(--a, 0) * 100%);
    min-width: 3.2em;
    font: 300 clamp(2.8rem, 2.6vw, 4.4rem)/1.2 var(--serif);
    letter-spacing: 0.08em;
}
.chapters__binder {
    flex-shrink: 0;
    font-style: italic;
}
.chapters__name-part {
    position: absolute;
    top: 50%;
    display: block;
    overflow: hidden;
    white-space: nowrap;
}
.chapters__name-part--left {
    right: 100%;
    transform: translateY(-50%) translateX(calc(100% * var(--a, 0)));
}
.chapters__name-part--right {
    left: 100%;
    transform: translateY(-50%) translateX(calc(-100% * var(--a, 0)));
}

.chars {
    display: flex;
}
.chars > span {
    display: block;
    transition: transform 0.8s var(--ease-soft);
    transition-delay: calc(var(--i) * 45ms);
}
.chars.is-out > span {
    transform: translateY(105%);
    transition-duration: 0.45s;
    transition-delay: 0s;
}
.chars.is-pre > span {
    transform: translateY(-105%);
    transition: none;
}

.chapter {
    position: relative;
    z-index: 1;
}
.chapter__grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 0 1rem;
}
.chapter__grid > * {
    grid-column: span 12;
}

.chapter__img {
    position: relative;
    display: block;
}
.chapter__inner {
    position: relative;
    display: block;
    width: 100%;
    overflow: hidden;
    cursor: inherit;
    /* 同上：视差靠 translate3d 自动合成，避免 9 个元素常驻合成层 */
}
.chapter__zoom {
    width: 100%;
    height: 100%;
    transition: transform 0.5s var(--ease-sine);
}
.chapter__inner .parallax-frame {
    background: var(--bg-deep);
}
.chapter__inner img {
    -webkit-user-drag: none;
    user-select: none;
}
.chapter__img:hover .chapter__zoom {
    transform: scale(1.04);
}

.flare {
    position: absolute;
    inset: 0;
    z-index: 2;
    pointer-events: none;
    background: linear-gradient(
        135deg,
        transparent 38%,
        rgba(255, 255, 255, 0.28) 50%,
        transparent 62%
    );
    transform: translate(-100%, -100%);
    opacity: 0;
}
.chapter__img:hover .flare {
    opacity: 1;
    transform: translate(100%, 100%);
    transition:
        transform 0.9s var(--ease-soft),
        opacity 0.4s var(--ease-soft);
}

.chapter__title {
    display: none;
    padding-top: 1.5rem;
    text-align: center;
    font: 300 2.6rem/1.2 var(--serif);
    letter-spacing: 0.06em;
}
.chapter__title em {
    padding: 0 0.3em;
    font-style: italic;
}

/* 章节照片排布（与参考站相同的 10 种构图，奇数轮次镜像） */
@media all {
    .chapter__img:first-child {
        z-index: 5;
    }

    .pos-0:not(.mirrored) .chapter__img:nth-child(1) {
        grid-column: 6 / span 5;
    }
    .pos-0:not(.mirrored) .chapter__img:nth-child(2) {
        grid-column: 3 / span 4;
        margin-top: -28%;
        padding-right: 6%;
    }
    .pos-0:not(.mirrored) .chapter__img:nth-child(3) {
        grid-column: 8 / span 2;
        align-self: end;
        margin-bottom: -50%;
    }
    .pos-0.mirrored .chapter__img:nth-child(1) {
        grid-column: 3 / span 5;
    }
    .pos-0.mirrored .chapter__img:nth-child(2) {
        grid-area: 2 / 7 / auto / span 4;
        margin-top: -28%;
        padding-left: 6%;
    }
    .pos-0.mirrored .chapter__img:nth-child(3) {
        grid-column: 4 / span 2;
        align-self: end;
        margin-bottom: -50%;
    }

    .pos-1:not(.mirrored) .chapter__img:nth-child(1) {
        grid-column: 4 / span 6;
    }
    .pos-1:not(.mirrored) .chapter__img:nth-child(2) {
        grid-column: 8 / span 3;
        margin-top: -14%;
    }
    .pos-1:not(.mirrored) .chapter__img:nth-child(3) {
        grid-column: 3 / span 2;
        align-self: end;
        margin-top: -50%;
        margin-bottom: -50%;
    }
    .pos-1.mirrored .chapter__img:nth-child(1) {
        grid-column: 4 / span 6;
    }
    .pos-1.mirrored .chapter__img:nth-child(2) {
        grid-column: 3 / span 3;
        margin-top: -14%;
    }
    .pos-1.mirrored .chapter__img:nth-child(3) {
        grid-column: 9 / span 2;
        align-self: end;
        margin-top: -50%;
        margin-bottom: -50%;
    }

    .pos-2:not(.mirrored) .chapter__img:nth-child(1) {
        grid-column: 3 / span 5;
    }
    .pos-2:not(.mirrored) .chapter__img:nth-child(2) {
        grid-column: 8 / span 3;
        align-self: flex-start;
        margin-top: -57%;
    }
    .pos-2:not(.mirrored) .chapter__img:nth-child(3) {
        grid-column: 7 / span 3;
        align-self: end;
        margin-top: -15%;
        margin-bottom: -30%;
        padding-left: 15%;
        padding-right: 8%;
    }
    .pos-2.mirrored .chapter__img:nth-child(1) {
        grid-area: 2 / 6 / auto / span 5;
        margin-top: -57%;
    }
    .pos-2.mirrored .chapter__img:nth-child(2) {
        grid-column: 3 / span 3;
    }
    .pos-2.mirrored .chapter__img:nth-child(3) {
        grid-area: 3 / 4 / auto / span 3;
        align-self: end;
        margin-top: -15%;
        margin-bottom: -30%;
        padding-left: 8%;
        padding-right: 15%;
    }

    .pos-3:not(.mirrored) .chapter__img:nth-child(1) {
        grid-area: 2 / 7 / auto / span 4;
        margin-top: -11.3%;
        left: 3%;
    }
    .pos-3:not(.mirrored) .chapter__img:nth-child(2) {
        grid-area: 1 / 4 / auto / span 2;
    }
    .pos-3:not(.mirrored) .chapter__img:nth-child(3) {
        grid-area: 3 / 3 / auto / span 4;
        align-self: end;
        margin-top: -48%;
        padding-right: 3%;
    }
    .pos-3.mirrored .chapter__img:nth-child(1) {
        grid-area: 2 / 3 / auto / span 4;
        margin-top: -11.3%;
        padding-right: 3%;
    }
    .pos-3.mirrored .chapter__img:nth-child(2) {
        grid-area: 1 / 8 / auto / span 2;
    }
    .pos-3.mirrored .chapter__img:nth-child(3) {
        grid-area: 3 / 7 / auto / span 4;
        align-self: end;
        margin-top: -48%;
        margin-bottom: -15%;
        padding-left: 3%;
    }

    .pos-4:not(.mirrored) .chapter__img:nth-child(1) {
        grid-column: 3 / span 5;
    }
    .pos-4:not(.mirrored) .chapter__img:nth-child(2) {
        grid-column: 7 / span 4;
        margin-top: -22%;
        padding-left: 7%;
    }
    .pos-4:not(.mirrored) .chapter__img:nth-child(3) {
        grid-column: 4 / span 2;
        align-self: end;
        margin-top: -55%;
    }
    .pos-4.mirrored .chapter__img:nth-child(1) {
        grid-column: 6 / span 5;
    }
    .pos-4.mirrored .chapter__img:nth-child(2) {
        grid-column: 3 / span 4;
        margin-top: -22%;
        padding-right: 7%;
    }
    .pos-4.mirrored .chapter__img:nth-child(3) {
        grid-column: 8 / span 2;
        align-self: end;
        margin-bottom: -70%;
    }

    .pos-5:not(.mirrored) .chapter__img:nth-child(1) {
        grid-column: 4 / span 6;
    }
    .pos-5:not(.mirrored) .chapter__img:nth-child(2) {
        grid-column: 3 / span 3;
        margin-top: -16%;
    }
    .pos-5:not(.mirrored) .chapter__img:nth-child(3) {
        grid-column: 9 / span 2;
        align-self: end;
        margin-bottom: -45%;
    }
    .pos-5.mirrored .chapter__img:nth-child(1) {
        grid-column: 4 / span 6;
        padding-left: 9%;
        padding-right: 8%;
    }
    .pos-5.mirrored .chapter__img:nth-child(2) {
        grid-column: 8 / span 3;
        margin-top: -16%;
    }
    .pos-5.mirrored .chapter__img:nth-child(3) {
        grid-column: 3 / span 2;
        align-self: end;
        margin-top: -60%;
    }

    .pos-6:not(.mirrored) .chapter__img:nth-child(1) {
        grid-area: 2 / 6 / auto / span 5;
        margin-top: -44%;
    }
    .pos-6:not(.mirrored) .chapter__img:nth-child(2) {
        grid-area: 1 / 3 / auto / span 3;
    }
    .pos-6:not(.mirrored) .chapter__img:nth-child(3) {
        z-index: 1;
        grid-area: 3 / 4 / auto / span 3;
        margin-top: -16%;
        margin-bottom: -40%;
        padding-left: 6%;
        padding-right: 15%;
    }
    .pos-6.mirrored .chapter__img:nth-child(1) {
        grid-area: 2 / 3 / auto / span 5;
        margin-top: -39%;
    }
    .pos-6.mirrored .chapter__img:nth-child(2) {
        grid-area: 1 / 8 / auto / span 3;
    }
    .pos-6.mirrored .chapter__img:nth-child(3) {
        z-index: 1;
        grid-area: 3 / 7 / auto / span 3;
        margin-top: -16%;
        margin-bottom: -40%;
        padding-left: 15%;
        padding-right: 6%;
    }

    .pos-7:not(.mirrored) .chapter__img:nth-child(1) {
        grid-area: 2 / 3 / auto / span 4;
        margin-bottom: -68%;
        padding-right: 2.5%;
    }
    .pos-7:not(.mirrored) .chapter__img:nth-child(2) {
        grid-area: 1 / 8 / auto / span 2;
        margin-bottom: -20%;
    }
    .pos-7:not(.mirrored) .chapter__img:nth-child(3) {
        grid-area: 3 / 7 / auto / span 4;
        align-self: end;
        margin-bottom: -15%;
        padding-left: 2.5%;
    }
    .pos-7.mirrored .chapter__img:nth-child(1) {
        grid-area: 2 / 7 / auto / span 4;
        margin-bottom: -53%;
    }
    .pos-7.mirrored .chapter__img:nth-child(2) {
        grid-area: 1 / 4 / auto / span 2;
        margin-bottom: -20%;
    }
    .pos-7.mirrored .chapter__img:nth-child(3) {
        grid-area: 3 / 3 / auto / span 4;
        margin-bottom: -15%;
        padding-right: 2.5%;
    }

    .pos-8:not(.mirrored) .chapter__img:nth-child(1) {
        grid-column: 6 / span 5;
        margin-bottom: -16%;
    }
    .pos-8:not(.mirrored) .chapter__img:nth-child(2) {
        grid-column: 3 / span 4;
        padding-right: 6.5%;
    }
    .pos-8:not(.mirrored) .chapter__img:nth-child(3) {
        grid-column: 8 / span 2;
        align-self: end;
        margin-bottom: -50%;
    }
    .pos-8.mirrored .chapter__img:nth-child(1) {
        grid-column: 3 / span 5;
        margin-bottom: -16%;
    }
    .pos-8.mirrored .chapter__img:nth-child(2) {
        grid-column: 7 / span 4;
        margin-bottom: -38%;
        padding-left: 6.5%;
    }
    .pos-8.mirrored .chapter__img:nth-child(3) {
        grid-column: 4 / span 2;
        align-self: end;
        margin-bottom: -50%;
    }

    .pos-9:not(.mirrored) .chapter__img:nth-child(1) {
        grid-column: 4 / span 6;
        margin-bottom: -6%;
        padding-left: 9%;
        padding-right: 9%;
    }
    .pos-9:not(.mirrored) .chapter__img:nth-child(2) {
        grid-column: 8 / span 3;
    }
    .pos-9:not(.mirrored) .chapter__img:nth-child(3) {
        grid-column: 3 / span 2;
        align-self: end;
        margin-top: -50%;
    }
    .pos-9.mirrored .chapter__img:nth-child(1) {
        grid-column: 4 / span 6;
        margin-bottom: -6%;
        padding-left: 9%;
        padding-right: 9%;
    }
    .pos-9.mirrored .chapter__img:nth-child(2) {
        grid-column: 3 / span 3;
        margin-bottom: 50%;
    }
    .pos-9.mirrored .chapter__img:nth-child(3) {
        grid-column: 8 / span 2;
        align-self: end;
    }
}

/* 手机：沿用同一套 12 栏构图，把中间 8 栏（3-10）撑满屏幕宽度 */
@media (max-width: 767px) {
    .chapters {
        overflow-x: clip;
    }
    .chapters__list {
        gap: 30vh;
        padding: 50vh 0 40vh;
    }
    .chapter__grid {
        width: 150%;
        margin-left: -25%;
        gap: 0 0.6rem;
    }
    .chapter__img:first-child {
        z-index: 5;
    }
    /* 手机上照片铺满全宽，章节名浮在照片之上，用反色混合保证在米色底和照片上都看得清 */
    .chapters__name {
        z-index: 6;
        color: #fff;
        mix-blend-mode: difference;
    }
    .chapters__name-track {
        font-size: 2.4rem;
        letter-spacing: 0.06em;
    }
    .progress-cursor {
        display: none;
    }
    .chapter__img:active .chapter__zoom {
        transform: scale(1.03);
    }
}

/* ---------- 进度光标 ---------- */
.progress-cursor {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 30;
    width: 10.8rem;
    height: 10.8rem;
    margin: -5.4rem 0 0 -5.4rem;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s var(--ease-soft);
    will-change: transform;
}
.progress-cursor.is-visible {
    opacity: 1;
}
.progress-cursor svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
    overflow: visible;
}
.progress-cursor circle {
    fill: none;
    stroke: var(--ink);
    stroke-width: 1;
}
.progress-cursor__track {
    opacity: 0.2;
}
.progress-cursor__bar {
    stroke-dasharray: 326.73;
    stroke-dashoffset: 326.73;
}
.progress-cursor::before,
.progress-cursor::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    border: 4px solid transparent;
    border-top-width: 0;
    border-bottom: 6px solid var(--ink);
    transition: transform 0.4s var(--ease-soft);
}
.progress-cursor::before {
    transform: translate(-50%, -50%) translateY(-25px);
}
.progress-cursor::after {
    transform: translate(-50%, -50%) translateY(25px) rotate(180deg);
}
.progress-cursor.is-dragging::before {
    transform: translate(-50%, -50%) translateY(-17px);
}
.progress-cursor.is-dragging::after {
    transform: translate(-50%, -50%) translateY(17px) rotate(180deg);
}

@media (hover: hover) and (pointer: fine) and (min-width: 768px) {
    .chapters.has-cursor {
        cursor: grab;
    }
    .chapters.has-cursor.is-dragging {
        cursor: grabbing;
    }
}

/* ============================================================
   婚礼信息
   ============================================================ */
.info {
    position: relative;
    z-index: 1;
    padding: 14rem 0 16rem;
    background: var(--bg);
}
.info__date {
    text-align: center;
}
.info__date-big {
    /* 电脑端不再随 15vw 无限放大：手机端仍为 7.2rem，桌面端约 8rem~9rem，与倒计时/地点同层级 */
    font: 300 clamp(7.2rem, 5.5vw, 9rem)/1 var(--serif);
    letter-spacing: -0.01em;
}
.info__date-sub {
    margin-top: 2.4rem;
    font-size: 1.6rem;
    letter-spacing: 0.2em;
    color: var(--ink-soft);
}
/* 时间标签：与「流程」「地点」共用同一居中栏宽，左对齐使三个 label 边缘对齐 */
.info__date .info__label {
    width: min(46rem, 100%);
    margin-left: auto;
    margin-right: auto;
    text-align: left;
}

.cal {
    width: min(36rem, 100%);
    margin: 6.4rem auto 0;
    font-family: "Times New Roman", "LXGW WenKai", "Kaiti SC", "STKaiti", "KaiTi", "楷体", serif;
    color: #8b0000;
}
.cal__month {
    margin-bottom: 2.2rem;
    text-align: center;
    font-size: 1.5rem;
    font-weight: 400;
    line-height: 1;
    letter-spacing: 0.32em;
    color: #8b0000;
}
.cal__grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    row-gap: 0.2rem;
}
.cal__dow {
    padding-bottom: 1rem;
    text-align: center;
    font-size: 1.2rem;
    letter-spacing: 0.14em;
    color: #8b0000;
    border-bottom: 1px solid rgba(139, 0, 0, 0.4);
}
.cal__day {
    aspect-ratio: 1;
    display: grid;
    place-items: center;
    font-size: 1.7rem;
    font-weight: 400;
    line-height: 1;
    color: var(--ink);
}
.cal__day.is-empty {
    visibility: hidden;
}
.cal__day.is-wedding {
    position: relative;
    color: #c0392b;
    z-index: 0;
}
.cal__day.is-wedding::before {
    content: "";
    position: absolute;
    inset: 4%;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23c0392b' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20.84 4.61a5.5 5.5 0 0 0-7.78 0L12 5.67l-1.06-1.06a5.5 5.5 0 0 0-7.78 7.78l1.06 1.06L12 21.23l7.78-7.78 1.06-1.06a5.5 5.5 0 0 0 0-7.78z'/%3E%3C/svg%3E") center / contain no-repeat;
    z-index: -1;
}

.info__countdown {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: baseline;
    gap: 1rem 3.2rem;
    margin-top: 7rem;
    font-size: 1.5rem;
    color: var(--ink-soft);
}
.info__cd-item b {
    margin-right: 0.6rem;
    font: 300 4.8rem/1 var(--serif);
    color: var(--ink);
}
.info__cd-label {
    flex-basis: 100%;
    text-align: center;
    margin-bottom: 1rem;
    letter-spacing: 0.1em;
}

.info__grid {
    margin-top: 14rem;
}
.info__venue {
    width: min(46rem, 100%);
    margin: 0 auto;
}
.info__schedule {
    width: min(46rem, 100%);
    margin: 0 auto 8rem;
}

.info__label {
    padding-top: 1.6rem;
    margin-bottom: 3rem;
    border-top: 1px solid rgba(35, 35, 35, 0.25);
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--ink-soft);
    letter-spacing: 0.1em;
}
.info__venue-name {
    font: 300 clamp(2.8rem, 2.4vw, 4.2rem)/1.3 var(--serif);
    text-wrap: balance;
}
.info__address {
    margin: 1.4rem 0 3.6rem;
    color: var(--ink-soft);
    line-height: 1.7;
}

.schedule {
    display: flex;
    flex-direction: column;
    gap: 3.2rem;
}
.schedule__row {
    display: grid;
    grid-template-columns: 8.6rem 4.2rem 1fr;
    align-items: center;
    column-gap: 1.4rem;
}
.schedule__time {
    font: 300 3.4rem/1 var(--serif);
}
/* 时间与文字之间的图标：1px 细线圆框 + 线性图标，呼应整站细线 / 衬线调性 */
.schedule__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 4.2rem;
    height: 4.2rem;
    border: 1px solid rgba(35, 35, 35, 0.22);
    border-radius: 999px;
    color: var(--ink-soft);
}
.schedule__icon svg {
    width: 2.1rem;
    height: 2.1rem;
}
.schedule__title {
    display: block;
    font-size: 1.8rem;
}
.schedule__desc {
    display: block;
    margin-top: 0.4rem;
    font-size: 1.5rem;
    color: var(--ink-soft);
}

.info__map {
    margin-top: 3.6rem;
}
.map-frame {
    position: relative;
    display: block;
    overflow: hidden;
    border: 1px solid rgba(35, 35, 35, 0.14);
    background: var(--bg-deep);
    aspect-ratio: 4 / 3;
}
.map-frame img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    /* 轻微去色 + 暖调，让真实地图融入米色极简风格 */
    filter: grayscale(0.45) sepia(0.14) contrast(0.97) brightness(1.03);
}
.map-frame__pin {
    position: absolute;
    left: var(--pin-x, 50%);
    top: var(--pin-y, 50%);
    width: 16px;
    height: 16px;
    transform: translate(-50%, -50%);
    background: var(--ink);
    border: 3px solid var(--white);
    border-radius: 50%;
    box-shadow:
        0 0 0 5px rgba(35, 35, 35, 0.12),
        0 3px 12px rgba(0, 0, 0, 0.3);
}
.map-frame__pin::after {
    content: "";
    position: absolute;
    inset: -1px;
    border: 1.5px solid var(--ink);
    border-radius: 50%;
    animation: mapPulse 2.6s var(--ease-sine) infinite;
}
@keyframes mapPulse {
    0% {
        transform: scale(1);
        opacity: 0.7;
    }
    100% {
        transform: scale(3.2);
        opacity: 0;
    }
}
.info__map-caption {
    margin-top: 1.6rem;
    text-align: center;
    font-size: 1.3rem;
    letter-spacing: 0.1em;
    color: var(--ink-soft);
}

@media (max-width: 767px) {
    .info {
        padding: 10rem 0 12rem;
    }
    .cal {
        width: min(30rem, 100%);
        margin-top: 4.8rem;
    }
    .cal__day {
        font-size: 1.5rem;
    }
    .info__countdown {
        gap: 0.8rem 2rem;
        margin-top: 5rem;
    }
    .info__cd-item b {
        font-size: 3.6rem;
    }
    .info__grid {
        margin-top: 9rem;
    }
}

/* ============================================================
   宾客回执
   ============================================================ */
.rsvp {
    position: relative;
    z-index: 1;
    padding: 10rem 0 22rem;
    background: var(--ink);
    color: var(--white);
    /* 深色回执模块的局部配色变量 */
    --rsvp-soft: rgba(253, 252, 250, 0.68);
    --rsvp-line: rgba(253, 252, 250, 0.32);
    --rsvp-error: #e0786b;
}
.rsvp__grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 1rem;
}
.rsvp__intro {
    grid-column: 2 / span 4;
}
.rsvp__form,
.rsvp__external {
    grid-column: 7 / span 5;
}

.rsvp__title {
    font: 300 clamp(4.4rem, 4.4vw, 7.6rem)/1.15 var(--serif);
    letter-spacing: 0.04em;
}
.rsvp__lead {
    margin-top: 2.4rem;
    max-width: 24em;
    color: var(--ink-soft);
    line-height: 1.8;
}

.rsvp__form {
    display: flex;
    flex-direction: column;
    gap: 3.6rem;
}
.field {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    border: 0;
    min-width: 0;
}
.field__label {
    font-size: 1.5rem;
    color: var(--ink-soft);
    letter-spacing: 0.06em;
    padding: 0;
}
.field__input {
    width: 100%;
    padding: 1rem 0 1.2rem;
    border: 0;
    border-bottom: 1px solid rgba(35, 35, 35, 0.4);
    border-radius: 0;
    background: transparent;
    font-size: 1.8rem;
    appearance: none;
    transition: border-color 0.3s var(--ease-soft);
}
.field__input:focus {
    outline: none;
    border-bottom-color: var(--ink);
}
.field__input:focus-visible {
    outline: none;
    box-shadow: 0 1px 0 0 var(--ink);
}
select.field__input {
    background-image:
        linear-gradient(45deg, transparent 50%, var(--ink) 50%),
        linear-gradient(135deg, var(--ink) 50%, transparent 50%);
    background-position:
        calc(100% - 9px) 52%,
        calc(100% - 4px) 52%;
    background-size: 5px 5px;
    background-repeat: no-repeat;
}
textarea.field__input {
    resize: vertical;
    min-height: 8rem;
    line-height: 1.6;
}
.field.has-error .field__input {
    border-bottom-color: var(--error);
}
.field__error {
    font-size: 1.4rem;
    color: var(--error);
}

.choice {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}
.choice__item {
    position: relative;
    cursor: pointer;
}
.choice__item input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}
.choice__item span {
    display: inline-block;
    padding: 1.2rem 2.2rem;
    border: 1px solid rgba(35, 35, 35, 0.35);
    border-radius: 999px;
    font-size: 1.6rem;
    transition:
        background-color 0.25s var(--ease-soft),
        color 0.25s var(--ease-soft),
        border-color 0.25s var(--ease-soft);
}
.choice__item:hover span {
    border-color: var(--ink);
}
.choice__item input:checked + span {
    background: var(--ink);
    border-color: var(--ink);
    color: var(--bg);
}
.choice__item input:focus-visible + span {
    outline: 1px solid var(--ink);
    outline-offset: 3px;
}

.rsvp__submit {
    align-self: flex-start;
    margin-top: 1rem;
}
.rsvp__submit:disabled {
    opacity: 0.6;
    pointer-events: none;
}
.rsvp__hint {
    font-size: 1.4rem;
    color: var(--ink-soft);
}

.rsvp__thanks {
    display: flex;
    flex-direction: column;
    gap: 1.6rem;
}
.rsvp__thanks h3 {
    font: 300 4rem/1.2 var(--serif);
    letter-spacing: 0.04em;
}
.rsvp__thanks p {
    color: var(--ink-soft);
}

/* 深色背景下的配色覆盖：让文字、输入框、选项、按钮都适配深色 */
.rsvp__lead,
.field__label,
.rsvp__hint,
.rsvp__thanks p {
    color: var(--rsvp-soft);
}

.field__input {
    border-bottom-color: var(--rsvp-line);
}
.field__input:focus {
    border-bottom-color: var(--white);
}
.field__input:focus-visible {
    box-shadow: 0 1px 0 0 var(--white);
}
select.field__input {
    background-image:
        linear-gradient(45deg, transparent 50%, var(--white) 50%),
        linear-gradient(135deg, var(--white) 50%, transparent 50%);
}
.field.has-error .field__input {
    border-bottom-color: var(--rsvp-error);
}
.field__error {
    color: var(--rsvp-error);
}

.choice__item span {
    border-color: var(--rsvp-line);
}
.choice__item:hover span {
    border-color: var(--white);
}
.choice__item input:checked + span {
    background: var(--white);
    border-color: var(--white);
    color: var(--ink);
}
.choice__item input:focus-visible + span {
    outline-color: var(--white);
}

.rsvp__submit,
.rsvp__external .pill {
    background: var(--white);
    color: var(--ink);
}
@media (hover: hover) {
    .rsvp__submit:hover,
    .rsvp__external .pill:hover {
        background: var(--bg);
        color: var(--ink);
    }
}

@media (max-width: 767px) {
    .rsvp {
        padding: 6rem 0 14rem;
    }
    .rsvp__grid {
        display: flex;
        flex-direction: column;
        gap: 5rem;
    }
}

/* ============================================================
   结尾（揭幕式）
   ============================================================ */
main {
    position: relative;
    z-index: 1;
    background: var(--bg);
}

.footer {
    position: relative;
    z-index: 0;
    background:
        linear-gradient(rgba(223, 220, 214, 0.75), rgba(223, 220, 214, 0.75)),
        var(--bg);
    color: var(--ink);
    overflow: hidden;
}
.footer__inner {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 3.6rem;
    /* 顶部留出固定导航的高度，避免 L&L 与导航重叠；整体压紧，尽量一屏放下 */
    padding: 11rem 0 3.5rem;
}
.footer__top {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2.8rem;
}
.footer__title-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2.4rem;
    text-align: center;
}
.footer__title {
    font: 300 clamp(2.8rem, 2.4vw, 3.8rem)/1.3 var(--serif);
    letter-spacing: 0.04em;
    text-align: center;
}
.footer__mark {
    text-align: center;
    font: 300 italic 6rem/1 var(--serif);
    letter-spacing: -0.02em;
}
.footer__photo {
    width: 100%;
    max-width: 32rem;
}
.footer__photo img {
    width: 100%;
    height: auto;
    aspect-ratio: 3 / 2;
    object-fit: cover;
}
.footer__nav {
    display: flex;
    justify-content: center;
    gap: 2.8rem;
    margin-top: 3.2rem;
}
.footer__nav ul {
    display: flex;
    gap: 2.8rem;
    flex-shrink: 0;
}
.footer__nav ul:last-child a {
    opacity: 0.6;
}
.footer__nav a {
    display: inline-block;
    padding: 1.2rem 0;
    transition: opacity 0.3s;
}
.footer__nav a:hover {
    opacity: 0.6;
}

.footer__message {
    text-align: center;
}
.footer__message p:first-child {
    max-width: 30em;
    margin: 0 auto;
    white-space: pre-line;
    font: 300 clamp(2rem, 1.8vw, 2.6rem)/1.6 var(--serif);
}
.footer__sign {
    margin-top: 1.6rem;
    font-size: 1.5rem;
    letter-spacing: 0.14em;
    color: var(--ink-soft);
}

.footer__legals {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2.4rem;
    font-size: 1.4rem;
    color: var(--ink-soft);
}

@media (max-width: 767px) {
    .footer__inner {
        gap: 2.8rem;
        padding: 7.5rem 0 3rem;
    }
    .footer__top {
        gap: 2.2rem;
    }
    .footer__mark {
        font-size: 4.8rem;
    }
    .footer__photo {
        width: min(100%, 28rem);
        max-width: 28rem;
    }
    .footer__nav {
        gap: 1.4rem;
    }
    .footer__nav ul {
        gap: 1.4rem;
    }
    .footer__legals {
        flex-direction: column;
        align-items: center;
        gap: 0.6rem;
        padding-top: 2rem;
        border-top: 1px solid rgba(35, 35, 35, 0.2);
    }
}

/* ============================================================
   音乐按钮
   ============================================================ */
.music-btn {
    position: fixed;
    right: 2.4rem;
    bottom: 2.4rem;
    z-index: 980;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 5.6rem;
    height: 5.6rem;
    border-radius: 999px;
    background: var(--white);
    color: var(--ink);
    box-shadow: 0 10px 30px rgba(84, 72, 58, 0.14);
    opacity: 0;
    transition:
        opacity 0.6s var(--ease-soft),
        transform 0.2s var(--ease-soft);
}
.music-btn[hidden] {
    display: none;
}
html.is-ready .music-btn {
    opacity: 1;
}
.music-btn:active {
    transform: scale(0.96);
}
.music-btn__icon {
    width: 2.2rem;
    height: 2.2rem;
}
.music-btn.is-playing .music-btn__icon {
    animation: spin 6s linear infinite;
}
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ---------- 进场显现 ---------- */
.reveal-up {
    opacity: 0;
    transform: translateY(4rem);
    transition:
        opacity 1s var(--ease-soft),
        transform 1.2s var(--ease-out);
}
.reveal-up.is-in {
    opacity: 1;
    transform: none;
}

/* ============================================================
   减少动态效果
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        transition-duration: 0.01ms !important;
        transition-delay: 0s !important;
        animation: none !important;
    }
    .hero__media,
    .hero__line,
    .chapter__inner,
    .parallax-frame img,
    .footer__inner {
        transform: none !important;
    }
    .hero__media {
        opacity: 1 !important;
    }
}