/* ==========================================================================
   变量
   ========================================================================== */

:root {
    --color-white: #ffffff;
    --color-warm-white: #f8f5ef;
    --color-sand-light: #eee9df;
    --color-ink: #173238;
    --color-ink-soft: #557077;
    --color-ocean-deep: #075368;
    --color-ocean-mid: #167f9d;
    --color-ocean-light: #54b8ce;
    --color-hero-fallback: #168eaa;
    --color-overlay: rgba(4, 50, 64, 0.24);
    --color-overlay-mobile: rgba(4, 46, 59, 0.48);
    --color-border-light: rgba(23, 50, 56, 0.14);
    --color-focus: #f4d9a5;

    --font-heading: "Bodoni 72", Didot, "Times New Roman", serif;
    --font-body: "Avenir Next", Avenir, "Segoe UI", Arial, sans-serif;

    --container-width: 1180px;
    --container-gutter: 32px;
    --header-height: 106px;

    --space-2xs: 6px;
    --space-xs: 10px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 36px;
    --space-xl: 56px;
    --space-2xl: 84px;

    --transition-fast: 180ms ease;
    --transition-normal: 280ms ease;
}

/* ==========================================================================
   基础样式
   ========================================================================== */

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

html {
    scroll-behavior: smooth;
}

body {
    min-width: 320px;
    margin: 0;
    color: var(--color-ink);
    background-color: var(--color-warm-white);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

body.navigation-open {
    overflow: hidden;
}

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

a {
    color: inherit;
    text-decoration: none;
}

button,
a {
    -webkit-tap-highlight-color: transparent;
}

button {
    font: inherit;
}

a:focus-visible,
button:focus-visible {
    outline-color: var(--color-focus);
    outline-offset: 4px;
    outline-style: solid;
    outline-width: 2px;
}

.page-container {
    width: min(
        calc(100% - (var(--container-gutter) * 2)),
        var(--container-width)
    );
    margin-right: auto;
    margin-left: auto;
}

.skip-link {
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 1000;
    padding-top: 10px;
    padding-right: 16px;
    padding-bottom: 10px;
    padding-left: 16px;
    color: var(--color-ink);
    background-color: var(--color-white);
    transform: translateY(-160%);
    transition-property: transform;
    transition-duration: var(--transition-fast);
}

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

/* ==========================================================================
   导航栏
   ========================================================================== */

.site-header {
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    z-index: 20;
    height: var(--header-height);
    color: var(--color-white);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.brand-mark {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 138px;
    color: var(--color-white);
    line-height: 1;
}

.brand-mark__symbol {
    margin-bottom: 2px;
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 400;
    line-height: 0.8;
}

.brand-mark__name {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 600;
    letter-spacing: 0;
}

.brand-mark__descriptor {
    margin-top: 5px;
    font-size: 7px;
    font-weight: 600;
    letter-spacing: 0.3em;
    text-transform: uppercase;
}

.primary-navigation__list {
    display: flex;
    align-items: center;
    gap: 38px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.primary-navigation__link {
    position: relative;
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.01em;
}

.primary-navigation__link::after {
    position: absolute;
    right: 0;
    bottom: 6px;
    left: 0;
    height: 1px;
    background-color: currentColor;
    content: "";
    opacity: 0;
    transform: scaleX(0);
    transform-origin: center;
    transition-property: opacity, transform;
    transition-duration: var(--transition-fast);
}

.primary-navigation__link:hover::after,
.primary-navigation__link:focus-visible::after,
.primary-navigation__link[aria-current="page"]::after,
.primary-navigation__link.is-section-current::after {
    opacity: 0.9;
    transform: scaleX(1);
}

.primary-navigation__item--has-submenu {
    position: relative;
}

.primary-navigation__submenu {
    position: absolute;
    top: calc(100% - 2px);
    left: 50%;
    z-index: 40;
    width: 190px;
    margin: 0;
    padding-top: 10px;
    padding-right: 18px;
    padding-bottom: 10px;
    padding-left: 18px;
    color: var(--color-ink);
    background-color: var(--color-warm-white);
    border-color: rgba(23, 50, 56, 0.08);
    border-style: solid;
    border-width: 1px;
    list-style: none;
    opacity: 0;
    pointer-events: none;
    transform: translate(-50%, 8px);
    transition-property: opacity, transform;
    transition-duration: var(--transition-fast);
}

.primary-navigation__item--has-submenu:hover .primary-navigation__submenu,
.primary-navigation__item--has-submenu:focus-within .primary-navigation__submenu {
    opacity: 1;
    pointer-events: auto;
    transform: translate(-50%, 0);
}

.primary-navigation__submenu a {
    display: block;
    padding-top: 9px;
    padding-bottom: 9px;
    color: var(--color-ink-soft);
    font-size: 12px;
    transition-property: color;
    transition-duration: var(--transition-fast);
}

.primary-navigation__submenu a:hover,
.primary-navigation__submenu a:focus-visible,
.primary-navigation__submenu a[aria-current="page"] {
    color: var(--color-ink);
}

.light-navigation-page .site-header {
    color: var(--color-ink);
}

.light-navigation-page .brand-mark,
.light-navigation-page .navigation-toggle {
    color: var(--color-ink);
}

.light-navigation-page .button--navigation {
    border-color: var(--color-border-light);
}

.navigation-toggle {
    display: none;
    width: 46px;
    height: 46px;
    padding: 11px;
    border-color: rgba(255, 255, 255, 0.55);
    border-style: solid;
    border-width: 1px;
    color: var(--color-white);
    background-color: transparent;
    cursor: pointer;
}

.navigation-toggle__line {
    display: block;
    width: 100%;
    height: 1px;
    margin-top: 5px;
    margin-bottom: 5px;
    background-color: currentColor;
    transition-property: transform, opacity;
    transition-duration: var(--transition-fast);
}

.navigation-open .navigation-toggle__line:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.navigation-open .navigation-toggle__line:nth-child(2) {
    opacity: 0;
}

.navigation-open .navigation-toggle__line:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

/* ==========================================================================
   按钮
   ========================================================================== */

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding-top: 13px;
    padding-right: 30px;
    padding-bottom: 13px;
    padding-left: 30px;
    border-color: transparent;
    border-style: solid;
    border-width: 1px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.15em;
    line-height: 1.2;
    text-align: center;
    text-transform: uppercase;
    transition-property: color, background-color, border-color, transform;
    transition-duration: var(--transition-fast);
}

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

.button--primary {
    color: var(--color-ink);
    background-color: var(--color-warm-white);
}

.button--primary:hover,
.button--primary:focus-visible {
    background-color: var(--color-white);
}

.button--navigation {
    min-width: 118px;
    min-height: 42px;
    padding-top: 11px;
    padding-right: 22px;
    padding-bottom: 11px;
    padding-left: 22px;
    color: var(--color-ink);
    background-color: var(--color-warm-white);
    font-size: 11px;
    letter-spacing: 0.04em;
    text-transform: none;
}

.button--navigation:hover,
.button--navigation:focus-visible {
    background-color: var(--color-white);
}

.button--dark {
    flex-shrink: 0;
    min-width: 220px;
    color: var(--color-white);
    background-color: var(--color-ink);
}

.button--dark:hover,
.button--dark:focus-visible {
    background-color: var(--color-ocean-deep);
}

.button--outline {
    min-width: 220px;
    color: var(--color-ink);
    background-color: transparent;
    border-color: rgba(23, 50, 56, 0.4);
}

.button--outline:hover,
.button--outline:focus-visible {
    color: var(--color-white);
    background-color: var(--color-ink);
    border-color: var(--color-ink);
}

/* ==========================================================================
   页面公共组件
   ========================================================================== */

.site-footer {
    border-top-color: var(--color-border-light);
    border-top-style: solid;
    border-top-width: 1px;
    background-color: var(--color-warm-white);
}

.site-footer__inner {
    display: grid;
    grid-template-columns: 1fr auto;
    column-gap: var(--space-xl);
    row-gap: var(--space-lg);
    padding-top: 48px;
    padding-bottom: 30px;
}

.footer-brand {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 600;
}

.site-footer__tagline {
    max-width: 340px;
    margin-top: 6px;
    margin-bottom: 0;
    color: var(--color-ink-soft);
    font-size: 13px;
}

.footer-navigation__list {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 28px;
    margin: 8px 0 0;
    padding: 0;
    list-style: none;
}

.footer-navigation a {
    color: var(--color-ink-soft);
    font-size: 12px;
    transition-property: color;
    transition-duration: var(--transition-fast);
}

.footer-navigation a:hover,
.footer-navigation a:focus-visible,
.footer-navigation a[aria-current="page"] {
    color: var(--color-ink);
}

.site-footer__legal {
    display: flex;
    grid-column: 1 / -1;
    align-items: center;
    justify-content: space-between;
    padding-top: 20px;
    border-top-color: var(--color-border-light);
    border-top-style: solid;
    border-top-width: 1px;
    color: var(--color-ink-soft);
    font-size: 11px;
}

.site-footer__legal p {
    margin: 0;
}

.site-footer__legal-links {
    display: flex;
    gap: 20px;
}

/* ==========================================================================
   各页面
   ========================================================================== */

/* 首页 */

.home-hero {
    position: relative;
    display: flex;
    min-height: 700px;
    height: min(100svh, 56.25vw);
    max-height: 960px;
    overflow: hidden;
    color: var(--color-white);
    background-color: var(--color-hero-fallback);
    background-image: url("image/home-hero.jpg");
    background-position: center center;
    background-repeat: no-repeat;
    background-size: cover;
    isolation: isolate;
}

.home-hero__overlay {
    position: absolute;
    inset: 0;
    z-index: -1;
    background-color: var(--color-overlay);
}

.home-hero__inner {
    display: flex;
    align-items: center;
    padding-top: calc(var(--header-height) + 36px);
    padding-bottom: 80px;
}

.home-hero__content {
    width: min(46%, 520px);
    margin-top: 12px;
}

.home-hero__eyebrow {
    margin-top: 0;
    margin-bottom: 24px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.28em;
    line-height: 1.8;
    text-transform: uppercase;
}

.home-hero__title {
    margin-top: 0;
    margin-bottom: 22px;
    font-family: var(--font-heading);
    font-size: clamp(60px, 5.3vw, 86px);
    font-weight: 400;
    font-style: italic;
    letter-spacing: -0.035em;
    line-height: 0.94;
}

.home-hero__title em {
    display: block;
    margin-top: 6px;
    font-weight: 400;
}

.home-hero__keyword {
    white-space: nowrap;
}

.home-hero__description {
    max-width: 450px;
    margin-top: 0;
    margin-bottom: 30px;
    font-size: 17px;
    line-height: 1.75;
}

.home-hero__button {
    min-width: 238px;
}

.home-hero__actions {
    display: flex;
    width: fit-content;
    align-items: flex-start;
    flex-direction: column;
}

.home-hero__secondary-links {
    align-self: center;
    display: flex;
    flex-wrap: wrap;
    gap: 18px 28px;
    margin-top: 18px;
}

.home-hero__secondary-links a {
    padding-bottom: 5px;
    color: rgba(255, 255, 255, 0.9);
    border-bottom-color: rgba(255, 255, 255, 0.58);
    border-bottom-style: solid;
    border-bottom-width: 1px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.13em;
    text-transform: uppercase;
    transition-property: color, border-color;
    transition-duration: var(--transition-fast);
}

.home-hero__secondary-links a:hover,
.home-hero__secondary-links a:focus-visible {
    color: var(--color-white);
    border-bottom-color: var(--color-white);
}

.home-hero__scroll {
    position: absolute;
    bottom: 70px;
    left: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.82);
    font-size: 10px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    transform: translateX(-50%);
}

.home-hero__scroll-line {
    display: block;
    width: 1px;
    height: 22px;
    background-color: currentColor;
}

.home-hero__store-links {
    position: absolute;
    right: 50%;
    bottom: 26px;
    left: 50%;
    display: flex;
    justify-content: center;
    gap: 36px;
    width: max-content;
    margin: 0;
    transform: translateX(-50%);
}

.home-hero__store-links a {
    min-width: 120px;
    padding-top: 8px;
    padding-right: 16px;
    padding-bottom: 8px;
    padding-left: 16px;
    color: var(--color-white);
    background-color: transparent;
    border-color: rgba(255, 255, 255, 0.95);
    border-style: solid;
    border-width: 1px;
    border-radius: 5px;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-align: center;
    text-transform: uppercase;
    transition-property: color, border-color;
    transition-duration: var(--transition-fast);
}

.home-hero__store-links a:hover,
.home-hero__store-links a:focus-visible {
    color: var(--color-white);
    background-color: rgba(255, 255, 255, 0.16);
    border-color: var(--color-white);
}

.home-hero__store-divider {
    align-self: center;
    width: 1px;
    height: 24px;
    background-color: rgba(255, 255, 255, 0.88);
}

/* 公共内页 Hero */

.page-hero {
    position: relative;
    display: flex;
    min-height: 430px;
    color: var(--color-white);
    background-color: var(--color-ocean-mid);
    background-position: center center;
    background-repeat: no-repeat;
    background-size: cover;
    isolation: isolate;
}

.page-hero--about {
    background-image: url("image/about-hero.jpg");
    background-position: center 58%;
}

.page-hero--how-it-works {
    background-image: url("image/how-it-works-hero.jpg");
    background-position: center 52%;
}

.page-hero--dating-tips {
    background-image: url("image/dating-tips-hero.jpg");
    background-position: center 58%;
}

.page-hero--success-stories {
    background-image: url("image/success-stories-hero.jpg");
    background-position: center 46%;
}

.page-hero--blog {
    background-image: url("image/blog-hero.jpg");
    background-position: center 54%;
}

.page-hero__overlay {
    position: absolute;
    inset: 0;
    z-index: -1;
    background-color: rgba(4, 50, 64, 0.31);
}

.page-hero__inner {
    display: flex;
    align-items: center;
    padding-top: calc(var(--header-height) + 42px);
    padding-bottom: 64px;
}

.page-hero__content {
    max-width: 540px;
}

.page-hero__title {
    margin-top: 0;
    margin-bottom: 16px;
    font-family: var(--font-heading);
    font-size: clamp(54px, 5.2vw, 76px);
    font-weight: 400;
    letter-spacing: -0.035em;
    line-height: 1;
}

.page-hero__description {
    max-width: 460px;
    margin: 0;
    font-size: 17px;
    line-height: 1.65;
}

/* 通用内容区 */

.content-section {
    padding-top: var(--space-2xl);
    padding-bottom: var(--space-2xl);
}

.section-heading {
    margin-bottom: 52px;
}

.section-heading--centered {
    max-width: 640px;
    margin-right: auto;
    margin-left: auto;
    text-align: center;
}

.section-heading--with-action {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--space-lg);
}

.section-eyebrow {
    margin-top: 0;
    margin-bottom: 10px;
    color: var(--color-ocean-deep);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.section-title {
    margin-top: 0;
    margin-bottom: 24px;
    font-family: var(--font-heading);
    font-size: clamp(38px, 4vw, 54px);
    font-weight: 400;
    letter-spacing: -0.025em;
    line-height: 1.08;
}

.text-link {
    display: inline-flex;
    flex-shrink: 0;
    align-items: center;
    min-height: 42px;
    color: var(--color-ink-soft);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    border-bottom-color: currentColor;
    border-bottom-style: solid;
    border-bottom-width: 1px;
    transition-property: color;
    transition-duration: var(--transition-fast);
}

.text-link:hover,
.text-link:focus-visible {
    color: var(--color-ink);
}

.section-action {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 44px;
}

/* About Us 页面 */

.mission-section {
    background-color: var(--color-warm-white);
}

.mission-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
    gap: clamp(54px, 7vw, 104px);
}

.mission-layout__image {
    min-height: 500px;
    background-color: var(--color-sand-light);
    background-image: url("image/about-mission.jpg");
    background-position: center center;
    background-repeat: no-repeat;
    background-size: cover;
}

.mission-layout__content {
    max-width: 480px;
}

.mission-layout__body {
    color: var(--color-ink-soft);
    font-size: 15px;
    line-height: 1.8;
}

.mission-layout__body p {
    margin-top: 0;
    margin-bottom: 18px;
}

.mission-layout__body p:last-child {
    margin-bottom: 0;
}

/* How It Works 页面 */

.process-section {
    background-color: var(--color-warm-white);
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 42px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.process-step {
    position: relative;
    text-align: center;
}

.process-step:not(:last-child)::after {
    position: absolute;
    top: 35px;
    right: -36px;
    width: 30px;
    height: 1px;
    background-color: var(--color-border-light);
    content: "";
}

.process-step__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 70px;
    height: 70px;
    margin-right: auto;
    margin-bottom: 18px;
    margin-left: auto;
    border-color: var(--color-border-light);
    border-style: solid;
    border-width: 1px;
    border-radius: 50%;
    color: var(--color-ocean-deep);
}

.process-step__icon svg {
    width: 40px;
    height: 40px;
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 1.25;
}

.process-step__number {
    margin-top: 0;
    margin-bottom: 8px;
    color: var(--color-ocean-mid);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.18em;
}

.process-step__title {
    margin-top: 0;
    margin-bottom: 12px;
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 400;
    line-height: 1.2;
}

.process-step__description {
    margin: 0;
    color: var(--color-ink-soft);
    font-size: 13px;
    line-height: 1.7;
}

.join-cta {
    background-color: var(--color-sand-light);
}

.join-cta__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-xl);
    padding-top: 58px;
    padding-bottom: 58px;
}

.join-cta__content {
    max-width: 650px;
}

.join-cta__title {
    margin-top: 0;
    margin-bottom: 10px;
    font-family: var(--font-heading);
    font-size: clamp(36px, 3.6vw, 50px);
    font-weight: 400;
    letter-spacing: -0.025em;
    line-height: 1.08;
}

.join-cta__description {
    margin: 0;
    color: var(--color-ink-soft);
    font-size: 14px;
}

/* Dating Advice 与 Blog 页面 */

.articles-section {
    background-color: var(--color-warm-white);
}

.article-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: stretch;
    gap: 28px;
}

.article-card {
    display: flex;
    min-width: 0;
    height: 100%;
    flex-direction: column;
    background-color: var(--color-white);
    border-color: var(--color-border-light);
    border-style: solid;
    border-width: 1px;
}

.article-card[hidden] {
    display: none;
}

.article-card__image {
    flex-shrink: 0;
    width: 100%;
    aspect-ratio: 16 / 9;
    background-color: var(--color-ocean-light);
    background-position: center center;
    background-repeat: no-repeat;
    background-size: cover;
}

.article-card__image--first-impression {
    background-image: url("image/tip-first-impression.jpg");
}

.article-card__image--dating-purpose {
    background-image: url("image/tip-dating-purpose.jpg");
}

.article-card__image--someone-special {
    background-image: url("image/tip-someone-special.jpg");
}

.article-card__image--professionals-2026 {
    background-image: url("image/best-dating-app-for-professionals-2026.jpg");
}

.article-card__image--dating-without-burning-out {
    background-image: url("image/dating-without-burning-out.jpg");
}

.article-card__image--blog-summer {
    background-image: url("image/blog-summer.jpg");
}

.article-card__image--blog-connection {
    background-image: url("image/blog-connection.jpg");
}

.article-card__image--blog-date-ideas {
    background-image: url("image/blog-date-ideas.jpg");
}

.article-card__content {
    display: flex;
    flex: 1;
    flex-direction: column;
    padding-top: 24px;
    padding-right: 24px;
    padding-bottom: 24px;
    padding-left: 24px;
}

.article-card__meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-sm);
    margin-bottom: 14px;
    color: var(--color-ink-soft);
    font-size: 9px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.article-card__meta time {
    flex-shrink: 0;
}

.article-card__title {
    margin-top: 0;
    margin-bottom: 24px;
    font-family: var(--font-heading);
    font-size: 27px;
    font-weight: 400;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.article-card__link {
    align-self: flex-start;
    margin-top: auto;
    padding-bottom: 3px;
    color: var(--color-ocean-deep);
    border-bottom-color: currentColor;
    border-bottom-style: solid;
    border-bottom-width: 1px;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

/* ==========================================================================
   文章详情页
   ========================================================================== */

.article-page .site-header {
    position: relative;
    background-color: var(--color-ink);
}

.article-page__header {
    padding-top: var(--space-2xl);
    padding-bottom: var(--space-xl);
    text-align: center;
}

.article-page__title {
    max-width: 920px;
    margin-top: 0;
    margin-right: auto;
    margin-bottom: 18px;
    margin-left: auto;
    color: var(--color-ink);
    font-family: var(--font-heading);
    font-size: clamp(42px, 5.2vw, 72px);
    font-weight: 400;
    letter-spacing: -0.035em;
    line-height: 1.04;
}

.article-page__date {
    margin: 0;
    color: var(--color-ink-soft);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.13em;
    text-transform: uppercase;
}

.article-page__image-wrap {
    overflow: hidden;
    width: min(
        calc(100% - (var(--container-gutter) * 2)),
        960px
    );
    margin-right: auto;
    margin-bottom: var(--space-2xl);
    margin-left: auto;
    background-color: var(--color-sand-light);
    aspect-ratio: 3 / 2;
}

.article-page__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.article-page__body {
    width: min(
        calc(100% - (var(--container-gutter) * 2)),
        720px
    );
    margin-right: auto;
    margin-left: auto;
    padding-bottom: var(--space-2xl);
    color: var(--color-ink);
    font-size: 18px;
    line-height: 1.8;
}

.article-page__body p {
    margin-top: 0;
    margin-bottom: 26px;
}

.article-page__body h2 {
    margin-top: 46px;
    margin-bottom: 16px;
    font-family: var(--font-heading);
    font-size: 34px;
    font-weight: 400;
    letter-spacing: -0.02em;
    line-height: 1.16;
}

.article-page__cta {
    padding-top: 68px;
    padding-bottom: 68px;
    color: var(--color-white);
    background-color: var(--color-ink);
    text-align: center;
}

.article-page__cta-title {
    margin-top: 0;
    margin-bottom: 10px;
    font-family: var(--font-heading);
    font-size: clamp(34px, 4vw, 48px);
    font-weight: 400;
    letter-spacing: -0.025em;
    line-height: 1.12;
}

.article-page__cta-copy {
    max-width: 480px;
    margin-top: 0;
    margin-right: auto;
    margin-bottom: 28px;
    margin-left: auto;
    color: rgba(255, 255, 255, 0.82);
}

.article-page__cta .button {
    color: var(--color-ink);
    background-color: var(--color-warm-white);
}

.article-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: -20px;
    margin-bottom: 36px;
}

.article-filter {
    min-height: 40px;
    padding-top: 9px;
    padding-right: 18px;
    padding-bottom: 9px;
    padding-left: 18px;
    color: var(--color-ink-soft);
    background-color: transparent;
    border-color: var(--color-border-light);
    border-style: solid;
    border-width: 1px;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    transition-property: color, background-color, border-color;
    transition-duration: var(--transition-fast);
}

.article-filter:hover,
.article-filter:focus-visible,
.article-filter.is-active {
    color: var(--color-white);
    background-color: var(--color-ink);
    border-color: var(--color-ink);
}

.filter-empty-message {
    margin-top: 40px;
    margin-bottom: 0;
    color: var(--color-ink-soft);
    text-align: center;
}

.load-more-status {
    min-height: 24px;
    margin-top: 12px;
    margin-bottom: 0;
    color: var(--color-ink-soft);
    font-size: 12px;
}

/* Success Stories 页面 */

.stories-section {
    background-color: var(--color-warm-white);
}

.stories-carousel {
    position: relative;
    max-width: 980px;
    margin-right: auto;
    margin-left: auto;
    padding-right: 86px;
    padding-left: 86px;
}

.stories-carousel:focus-visible {
    outline-color: var(--color-focus);
    outline-offset: 10px;
    outline-style: solid;
    outline-width: 2px;
}

.stories-carousel__viewport {
    min-height: 330px;
}

.story-slide {
    display: grid;
    grid-template-columns: 230px minmax(0, 1fr);
    align-items: center;
    gap: 70px;
    min-height: 330px;
}

.story-slide[hidden] {
    display: none;
}

.story-slide__photo {
    width: 230px;
    height: 230px;
    border-radius: 50%;
    background-color: var(--color-ocean-light);
    background-position: center center;
    background-repeat: no-repeat;
    background-size: cover;
}

.story-slide__photo--sophie {
    background-image: url("image/story-sophie-daniel.jpg");
}

.story-slide__photo--emma {
    background-image: url("image/story-emma-james.jpg");
}

.story-slide__photo--olivia {
    background-image: url("image/story-olivia-michael.jpg");
}

.story-slide__content {
    max-width: 560px;
}

.story-slide__quote {
    margin-top: 0;
    margin-right: 0;
    margin-bottom: 22px;
    margin-left: 0;
    font-family: var(--font-heading);
    font-size: clamp(30px, 3vw, 42px);
    font-weight: 400;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.story-slide__summary {
    max-width: 480px;
    margin-top: 0;
    margin-bottom: 22px;
    color: var(--color-ink-soft);
    font-size: 14px;
    line-height: 1.7;
}

.story-slide__couple {
    margin-top: 0;
    margin-bottom: 2px;
    color: var(--color-ink);
    font-size: 13px;
    font-weight: 600;
}

.story-slide__details {
    margin: 0;
    color: var(--color-ink-soft);
    font-size: 11px;
}

.carousel-control {
    position: absolute;
    top: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    padding: 0;
    color: var(--color-ink);
    background-color: transparent;
    border-color: var(--color-border-light);
    border-style: solid;
    border-width: 1px;
    border-radius: 50%;
    cursor: pointer;
    transform: translateY(-50%);
    transition-property: color, background-color;
    transition-duration: var(--transition-fast);
}

.carousel-control:hover,
.carousel-control:focus-visible {
    color: var(--color-white);
    background-color: var(--color-ink);
}

.carousel-control--previous {
    left: 0;
}

.carousel-control--next {
    right: 0;
}

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 28px;
}

.carousel-dot {
    width: 7px;
    height: 7px;
    padding: 0;
    background-color: transparent;
    border-color: var(--color-ink-soft);
    border-style: solid;
    border-width: 1px;
    border-radius: 50%;
    cursor: pointer;
}

.carousel-dot.is-active {
    background-color: var(--color-ink);
    border-color: var(--color-ink);
}

/* Landing Pages 城市列表页 */

.city-directory-hero {
    position: relative;
    display: flex;
    min-height: 520px;
    overflow: hidden;
    background-color: var(--color-warm-white);
}

.city-directory-hero__image {
    position: absolute;
    inset: 0;
    z-index: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-warm-white);
    object-fit: cover;
    object-position: center center;
}

.city-directory-hero__inner {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    padding-top: calc(var(--header-height) + 36px);
    padding-bottom: 72px;
}

.city-directory-hero__content {
    max-width: 520px;
}

.city-directory-hero__title {
    margin-top: 0;
    margin-bottom: 20px;
    font-family: var(--font-heading);
    font-size: clamp(58px, 5.6vw, 82px);
    font-weight: 400;
    letter-spacing: -0.04em;
    line-height: 0.96;
}

.city-directory-hero__title em {
    display: block;
    margin-top: 6px;
    font-weight: 400;
}

.city-directory-hero__description {
    margin: 0;
    color: var(--color-ink-soft);
    font-size: 17px;
}

.city-list-section {
    background-color: var(--color-warm-white);
}

.city-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: stretch;
    gap: 28px;
}

.city-card {
    display: flex;
    min-width: 0;
    height: 100%;
    flex-direction: column;
    background-color: var(--color-white);
    border-color: var(--color-border-light);
    border-style: solid;
    border-width: 1px;
}

.city-card__image {
    flex-shrink: 0;
    width: 100%;
    overflow: hidden;
    aspect-ratio: 3 / 2;
    background-color: var(--color-ocean-light);
}

.city-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center center;
}

.city-card__content {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: end;
    column-gap: 18px;
    padding-top: 22px;
    padding-right: 24px;
    padding-bottom: 24px;
    padding-left: 24px;
}

.city-card__title {
    margin-top: 0;
    margin-bottom: 2px;
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 400;
    letter-spacing: -0.02em;
    line-height: 1.15;
}

.city-card__region {
    grid-column: 1;
    margin: 0;
    color: var(--color-ink-soft);
    font-size: 12px;
}

.city-card__link {
    grid-row: 1 / span 2;
    grid-column: 2;
    align-self: center;
    padding-bottom: 3px;
    color: var(--color-ocean-deep);
    border-bottom-color: currentColor;
    border-bottom-style: solid;
    border-bottom-width: 1px;
    font-size: 9px;
    font-weight: 600;
    letter-spacing: 0.13em;
    text-transform: uppercase;
}

/* 城市 Landing Page 通用模板 */

.city-hero {
    position: relative;
    display: flex;
    min-height: 570px;
    overflow: hidden;
    color: var(--color-white);
    background-color: var(--color-ocean-mid);
    isolation: isolate;
}

.city-hero::after {
    position: absolute;
    right: -5%;
    bottom: -1px;
    left: -5%;
    height: 34px;
    background-color: var(--color-warm-white);
    border-radius: 50% 50% 0 0;
    content: "";
}

.city-hero__image {
    position: absolute;
    inset: 0;
    z-index: -2;
    width: 100%;
    height: 100%;
    background-color: var(--color-ocean-mid);
    object-fit: cover;
    object-position: center center;
}

.city-hero__overlay {
    position: absolute;
    inset: 0;
    z-index: -1;
    background-color: rgba(4, 50, 64, 0.3);
}

.city-hero__inner {
    display: flex;
    align-items: center;
    padding-top: calc(var(--header-height) + 34px);
    padding-bottom: 78px;
}

.city-hero__content {
    max-width: 760px;
}

.city-hero__title {
    margin-top: 0;
    margin-bottom: 20px;
    font-family: var(--font-heading);
    font-size: clamp(50px, 5vw, 72px);
    font-weight: 400;
    letter-spacing: -0.035em;
    line-height: 1.02;
}

.city-hero__title span {
    display: block;
}

.city-hero__description {
    max-width: 520px;
    margin: 0;
    font-size: 17px;
    line-height: 1.65;
}

.city-benefits {
    background-color: var(--color-warm-white);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 58px;
}

.benefit-item {
    text-align: center;
}

.benefit-item__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 68px;
    height: 68px;
    margin-right: auto;
    margin-bottom: 18px;
    margin-left: auto;
    color: var(--color-ocean-deep);
    border-color: var(--color-border-light);
    border-style: solid;
    border-width: 1px;
    border-radius: 50%;
}

.benefit-item__icon svg {
    width: 40px;
    height: 40px;
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 1.25;
}

.benefit-item__title {
    margin-top: 0;
    margin-bottom: 10px;
    font-family: var(--font-heading);
    font-size: 25px;
    font-weight: 400;
}

.benefit-item__description {
    max-width: 300px;
    margin-top: 0;
    margin-right: auto;
    margin-bottom: 0;
    margin-left: auto;
    color: var(--color-ink-soft);
    font-size: 13px;
    line-height: 1.7;
}

.city-join-cta {
    color: var(--color-white);
    background-color: var(--color-ocean-deep);
}

.city-join-cta__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-xl);
    padding-top: 58px;
    padding-bottom: 58px;
}

.city-join-cta__title {
    margin-top: 0;
    margin-bottom: 8px;
    font-family: var(--font-heading);
    font-size: clamp(34px, 3.5vw, 48px);
    font-weight: 400;
    letter-spacing: -0.025em;
    line-height: 1.1;
}

.city-join-cta__description {
    margin: 0;
    color: rgba(255, 255, 255, 0.78);
    font-size: 14px;
}

/* ==========================================================================
   响应式
   ========================================================================== */

@media (max-width: 1024px) {
    :root {
        --container-gutter: 28px;
        --header-height: 92px;
    }

    .primary-navigation__list {
        gap: 24px;
    }

    .home-hero {
        min-height: 690px;
        height: 82svh;
        background-position: 58% center;
    }

    .home-hero__content {
        width: min(52%, 500px);
    }

    .home-hero__title {
        font-size: clamp(54px, 6.6vw, 72px);
    }

    .home-hero__description {
        font-size: 16px;
    }

    .mission-layout {
        gap: 56px;
    }

    .mission-layout__image {
        min-height: 450px;
    }

    .process-grid {
        gap: 28px;
    }

    .process-step:not(:last-child)::after {
        display: none;
    }

    .article-grid {
        gap: 22px;
    }

    .article-card__content {
        padding-top: 20px;
        padding-right: 20px;
        padding-bottom: 20px;
        padding-left: 20px;
    }

    .article-card__title {
        font-size: 24px;
    }

    .stories-carousel {
        padding-right: 68px;
        padding-left: 68px;
    }

    .story-slide {
        grid-template-columns: 200px minmax(0, 1fr);
        gap: 46px;
    }

    .story-slide__photo {
        width: 200px;
        height: 200px;
    }

    .city-grid {
        gap: 22px;
    }

    .benefits-grid {
        gap: 34px;
    }
}

@media (max-width: 820px) {
    :root {
        --container-gutter: 24px;
        --header-height: 82px;
    }

    .navigation-toggle {
        position: relative;
        z-index: 30;
        display: block;
    }

    .primary-navigation {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        width: min(82vw, 390px);
        padding-top: 120px;
        padding-right: 36px;
        padding-bottom: 48px;
        padding-left: 36px;
        color: var(--color-white);
        background-color: var(--color-ocean-deep);
        opacity: 0;
        pointer-events: none;
        transform: translateX(100%);
        transition-property: opacity, transform;
        transition-duration: var(--transition-normal);
    }

    .navigation-open .primary-navigation {
        opacity: 1;
        pointer-events: auto;
        transform: translateX(0);
    }

    .primary-navigation__list {
        flex-direction: column;
        align-items: stretch;
        gap: 14px;
    }

    .primary-navigation__link {
        min-height: 54px;
        border-bottom-color: rgba(255, 255, 255, 0.18);
        border-bottom-style: solid;
        border-bottom-width: 1px;
        font-size: 16px;
    }

    .primary-navigation__link::after {
        display: none;
    }

    .primary-navigation__submenu {
        position: static;
        width: 100%;
        margin-bottom: 4px;
        padding-top: 4px;
        padding-right: 0;
        padding-bottom: 8px;
        padding-left: 18px;
        color: var(--color-white);
        background-color: transparent;
        border-width: 0;
        opacity: 1;
        pointer-events: auto;
        transform: none;
    }

    .primary-navigation__item--has-submenu:hover .primary-navigation__submenu,
    .primary-navigation__item--has-submenu:focus-within .primary-navigation__submenu {
        transform: none;
    }

    .primary-navigation__submenu a {
        color: rgba(255, 255, 255, 0.72);
        font-size: 13px;
    }

    .primary-navigation__submenu a:hover,
    .primary-navigation__submenu a:focus-visible,
    .primary-navigation__submenu a[aria-current="page"] {
        color: var(--color-white);
    }

    .light-navigation-page.navigation-open .navigation-toggle {
        color: var(--color-white);
    }

    .button--navigation {
        width: 100%;
        min-height: 52px;
        margin-top: 16px;
    }

    .home-hero {
        min-height: 720px;
        height: 88svh;
        max-height: none;
        background-position: 62% center;
    }

    .home-hero__overlay {
        background-color: var(--color-overlay-mobile);
    }

    .home-hero__content {
        width: min(72%, 500px);
    }

    .site-footer__inner {
        grid-template-columns: 1fr;
    }

    .footer-navigation__list {
        justify-content: flex-start;
    }

    .page-hero {
        min-height: 400px;
    }

    .page-hero__inner {
        padding-top: calc(var(--header-height) + 36px);
        padding-bottom: 52px;
    }

    .content-section {
        padding-top: 64px;
        padding-bottom: 64px;
    }

    .mission-layout {
        grid-template-columns: 1fr;
        gap: 44px;
    }

    .mission-layout__image {
        min-height: auto;
        aspect-ratio: 4 / 3;
    }

    .mission-layout__content {
        max-width: 620px;
    }

    .process-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 48px 40px;
    }

    .join-cta__inner {
        align-items: flex-start;
        flex-direction: column;
        gap: 28px;
    }

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

    .article-card__title {
        font-size: 26px;
    }

    .article-grid .article-card:last-child {
        grid-column: 1 / -1;
    }

    /* Dating Advice 卡片保持与其他卡片相同的平板列宽。 */
    .dating-tips-page .article-grid .article-card:last-child {
        grid-column: auto;
    }

    .stories-carousel {
        padding-right: 58px;
        padding-left: 58px;
    }

    .story-slide {
        grid-template-columns: 1fr;
        gap: 34px;
        text-align: center;
    }

    .story-slide__photo {
        width: 190px;
        height: 190px;
        margin-right: auto;
        margin-left: auto;
    }

    .story-slide__content {
        margin-right: auto;
        margin-left: auto;
    }

    .story-slide__summary {
        margin-right: auto;
        margin-left: auto;
    }

    .city-directory-hero {
        min-height: 460px;
    }

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

    .city-grid .city-card:last-child {
        grid-column: 1 / -1;
    }

    .city-hero {
        min-height: 520px;
    }

    .benefits-grid {
        gap: 28px;
    }

    .city-join-cta__inner {
        align-items: flex-start;
        flex-direction: column;
        gap: 28px;
    }
}

@media (max-width: 600px) {
    :root {
        --container-gutter: 20px;
        --header-height: 78px;
    }

    .brand-mark {
        align-items: flex-start;
        width: auto;
    }

    .brand-mark__symbol {
        display: none;
    }

    .brand-mark__name {
        font-size: 18px;
    }

    .home-hero {
        min-height: 700px;
        height: 100svh;
        background-position: 68% center;
    }

    .home-hero__inner {
        align-items: flex-end;
        padding-top: calc(var(--header-height) + 30px);
        padding-bottom: 98px;
    }

    .home-hero__content {
        width: 100%;
        max-width: 440px;
    }

    .home-hero__eyebrow {
        margin-bottom: 18px;
        font-size: 9px;
    }

    .home-hero__title {
        margin-bottom: 18px;
        font-size: clamp(48px, 15vw, 66px);
    }

    .home-hero__keyword {
        font-size: min(12vw, 66px);
    }

    .home-hero__description {
        max-width: 360px;
        margin-bottom: 24px;
        font-size: 15px;
        line-height: 1.65;
    }

    .home-hero__button {
        min-width: 210px;
    }

    .home-hero__secondary-links {
        gap: 14px 22px;
        margin-top: 16px;
    }

    .home-hero__secondary-links a {
        font-size: 12px;
    }

    .home-hero__scroll {
        display: none;
    }

    .home-hero__store-links {
        bottom: 20px;
        gap: 20px;
    }

    .home-hero__store-links a {
        min-width: 100px;
        font-size: 9px;
    }

    .site-footer__inner {
        row-gap: 26px;
        padding-top: 38px;
    }

    .footer-navigation__list {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 14px 24px;
    }

    .site-footer__legal {
        align-items: flex-start;
        flex-direction: column;
        gap: 12px;
    }

    .page-hero {
        min-height: 390px;
        background-position: 62% center;
    }

    .page-hero--how-it-works {
        background-position: center center;
    }

    .page-hero__content {
        max-width: 390px;
    }

    .page-hero__title {
        font-size: 48px;
    }

    .page-hero__description {
        font-size: 15px;
    }

    .content-section {
        padding-top: 54px;
        padding-bottom: 54px;
    }

    .section-heading {
        margin-bottom: 40px;
    }

    .section-title {
        font-size: 38px;
    }

    .mission-layout {
        gap: 34px;
    }

    .mission-layout__image {
        aspect-ratio: 3 / 4;
    }

    .process-grid {
        grid-template-columns: 1fr;
        gap: 42px;
    }

    .process-step {
        max-width: 360px;
        margin-right: auto;
        margin-left: auto;
    }

    .process-step__description {
        font-size: 14px;
    }

    .join-cta__inner {
        padding-top: 48px;
        padding-bottom: 48px;
    }

    .join-cta__title {
        font-size: 38px;
    }

    .button--dark {
        width: 100%;
    }

    .section-heading--with-action {
        align-items: flex-start;
        flex-direction: column;
        gap: 8px;
    }

    .article-filters {
        margin-top: -10px;
    }

    .article-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .article-grid .article-card:last-child {
        grid-column: auto;
        width: 100%;
    }

    .article-card__title {
        font-size: 27px;
    }

    .article-filter {
        flex-grow: 1;
    }

    .stories-carousel {
        padding-right: 0;
        padding-bottom: 74px;
        padding-left: 0;
    }

    .stories-carousel__viewport {
        min-height: 500px;
    }

    .story-slide {
        min-height: 500px;
    }

    .story-slide__quote {
        font-size: 31px;
    }

    .carousel-control {
        top: auto;
        bottom: 0;
        transform: none;
    }

    .carousel-control--previous {
        left: calc(50% - 62px);
    }

    .carousel-control--next {
        right: calc(50% - 62px);
    }

    .carousel-dots {
        position: absolute;
        right: 0;
        bottom: 19px;
        left: 0;
        margin-top: 0;
        pointer-events: none;
    }

    .carousel-dot {
        pointer-events: auto;
    }

    .city-directory-hero {
        min-height: 500px;
        background-position: 62% center;
    }

    .city-directory-hero__title {
        font-size: 54px;
    }

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

    .city-grid .city-card:last-child {
        grid-column: auto;
    }

    .city-card__content {
        padding-top: 20px;
        padding-right: 20px;
        padding-bottom: 22px;
        padding-left: 20px;
    }

    .city-hero {
        min-height: 560px;
    }

    .city-hero__image {
        object-position: 64% center;
    }

    .city-hero__inner {
        align-items: flex-end;
        padding-bottom: 90px;
    }

    .city-hero__title {
        font-size: 45px;
    }

    .city-hero__description {
        font-size: 15px;
    }

    .benefits-grid {
        grid-template-columns: 1fr;
        gap: 42px;
    }

    .city-join-cta__inner {
        padding-top: 48px;
        padding-bottom: 48px;
    }

    .city-join-cta__title {
        font-size: 36px;
    }

    .city-join-cta .button {
        width: 100%;
    }
}

@media (max-width: 820px) {
    .article-page__header {
        padding-top: 64px;
        padding-bottom: 38px;
    }

    .article-page__image-wrap {
        margin-bottom: 52px;
    }

    .article-page__body {
        padding-bottom: 64px;
        font-size: 17px;
    }

    .article-page__body h2 {
        margin-top: 38px;
        font-size: 31px;
    }

    .article-page__cta {
        padding-top: 52px;
        padding-bottom: 52px;
    }
}

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

    *,
    *::before,
    *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}