/* HappyJump 官网 主样式
 * 设计语言对齐 App：sky/vitality/cheese/textDark + 圆润字体 + 16-20px 圆角 + 羽化阴影
 * 单文件包含全部样式，零外链依赖（OSS / 国内云主机部署友好）
 */

/* ==========================================================================
   1. Design tokens（与 Theme.swift 对齐）
   ========================================================================== */
:root {
    /* 品牌色 */
    --c-sky: #3399FF;
    --c-sky-soft: #E8F2FF;
    --c-sky-deep: #2580E0;
    --c-vitality: #FF8033;
    --c-vitality-soft: #FFEFE3;
    --c-cheese: #FFD633;
    --c-cheese-soft: #FFF7DB;

    /* 中性色 */
    --c-text: #33333D;
    --c-text-secondary: #73737D;
    --c-text-tertiary: #A3A3AD;
    --c-bg: #FAFAFC;
    --c-card: #FFFFFF;
    --c-border: #EBEBEF;
    --c-divider: #F0F0F4;

    /* 状态色 */
    --c-success: #34C759;
    --c-danger: #FF3B30;

    /* 字体 */
    --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue",
                 "Microsoft YaHei", "Hiragino Sans GB", Arial, sans-serif;
    --font-rounded: ui-rounded, -apple-system, BlinkMacSystemFont, "PingFang SC",
                    "Helvetica Neue", "Microsoft YaHei", Arial, sans-serif;

    /* 圆角 */
    --r-card: 20px;
    --r-card-sm: 16px;
    --r-pill: 999px;
    --r-chip: 12px;

    /* 阴影 */
    --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-card-hover: 0 6px 18px rgba(0, 0, 0, 0.08);
    --shadow-cta-sky: 0 4px 14px rgba(51, 153, 255, 0.36);
    --shadow-cta-vitality: 0 4px 14px rgba(255, 128, 51, 0.36);

    /* 间距 */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
    --space-16: 64px;
    --space-20: 80px;
    --space-24: 96px;

    /* 容器 */
    --container-max: 1100px;
    --container-narrow: 760px;

    /* 动效 */
    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-rounded);
    font-size: 16px;
    line-height: 1.6;
    color: var(--c-text);
    background-color: var(--c-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img, svg { display: block; max-width: 100%; height: auto; }

a {
    color: var(--c-sky);
    text-decoration: none;
    transition: color 0.2s var(--ease-out);
}
a:hover { color: var(--c-sky-deep); }

h1, h2, h3, h4 {
    font-family: var(--font-rounded);
    color: var(--c-text);
    line-height: 1.25;
    margin: 0 0 var(--space-4);
    letter-spacing: -0.01em;
}
h1 { font-size: 44px; font-weight: 800; }
h2 { font-size: 32px; font-weight: 700; }
h3 { font-size: 22px; font-weight: 700; }
h4 { font-size: 18px; font-weight: 600; }

p { margin: 0 0 var(--space-4); }

ul, ol { padding-left: 1.4em; margin: 0 0 var(--space-4); }
li { margin-bottom: var(--space-2); }

hr {
    border: 0;
    border-top: 1px solid var(--c-divider);
    margin: var(--space-8) 0;
}

code {
    font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
    font-size: 0.92em;
    background-color: var(--c-sky-soft);
    color: var(--c-sky-deep);
    padding: 2px 6px;
    border-radius: 6px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--space-5) 0;
    font-size: 15px;
}
th, td {
    padding: var(--space-3) var(--space-4);
    text-align: left;
    border-bottom: 1px solid var(--c-divider);
    vertical-align: top;
}
th {
    background-color: var(--c-bg);
    font-weight: 600;
    color: var(--c-text);
}

@media (max-width: 720px) {
    h1 { font-size: 32px; }
    h2 { font-size: 26px; }
    h3 { font-size: 20px; }
    body { font-size: 15px; }
}

/* ==========================================================================
   3. Layout
   ========================================================================== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-6);
}
.container--narrow { max-width: var(--container-narrow); }

.section {
    padding: var(--space-16) 0;
}
.section--tight { padding: var(--space-10) 0; }
@media (max-width: 720px) {
    .section { padding: var(--space-12) 0; }
}

/* ==========================================================================
   4. Header / Navbar
   ========================================================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background-color: rgba(250, 250, 252, 0.85);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid rgba(235, 235, 239, 0.5);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav__brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--c-text);
    font-weight: 700;
    font-size: 18px;
    letter-spacing: -0.01em;
}
.nav__brand:hover { color: var(--c-text); }

.nav__brand-icon {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.nav__brand-icon img {
    width: 36px;
    height: 36px;
    border-radius: 9px;
}

.nav__menu {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    list-style: none;
    margin: 0;
    padding: 0;
}
.nav__menu a {
    color: var(--c-text-secondary);
    font-weight: 500;
    font-size: 15px;
}
.nav__menu a:hover, .nav__menu a.is-active {
    color: var(--c-text);
}

/* 语言切换下拉 */
.nav__lang-wrap { position: relative; }

.nav__lang {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 6px 12px;
    border-radius: var(--r-pill);
    background-color: var(--c-card);
    border: 1px solid var(--c-border);
    font-size: 13px;
    color: var(--c-text-secondary);
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    line-height: 1.2;
}
.nav__lang:hover { color: var(--c-text); border-color: #d8d8de; }
.nav__lang__globe { width: 14px; height: 14px; display: inline-block; }
.nav__lang__caret {
    width: 0;
    height: 0;
    font-size: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 6px solid currentColor;
    transition: transform 0.2s var(--ease-out);
}
.nav__lang-wrap.is-open .nav__lang__caret { transform: rotate(180deg); }

.nav__lang-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 150px;
    list-style: none;
    margin: 0;
    padding: 6px;
    background-color: var(--c-card);
    border: 1px solid var(--c-border);
    border-radius: 14px;
    box-shadow: var(--shadow-card-hover);
    display: none;
    z-index: 60;
}
.nav__lang-wrap.is-open .nav__lang-menu { display: block; }
.nav__lang-menu li { margin: 0; padding: 0; border: 0 !important; }
.nav__lang-menu a {
    display: block;
    padding: 9px 12px;
    border-radius: 9px;
    font-size: 14px;
    color: var(--c-text-secondary);
    white-space: nowrap;
}
.nav__lang-menu a:hover { background-color: var(--c-bg); color: var(--c-text); }
.nav__lang-menu a[aria-current="true"] {
    color: var(--c-sky-deep);
    background-color: var(--c-sky-soft);
    font-weight: 600;
}

.nav__toggle {
    display: none;
    width: 40px;
    height: 40px;
    border: 0;
    background: transparent;
    cursor: pointer;
    border-radius: 10px;
}
.nav__toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--c-text);
    margin: 5px auto;
    border-radius: 2px;
}

@media (max-width: 720px) {
    .nav__menu {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: var(--space-3) var(--space-6);
        background-color: var(--c-card);
        border-bottom: 1px solid var(--c-divider);
        box-shadow: 0 6px 20px rgba(0, 0, 0, 0.06);
    }
    .nav__menu.is-open { display: flex; }
    .nav__menu li {
        margin: 0;
        padding: var(--space-3) 0;
        border-bottom: 1px solid var(--c-divider);
    }
    .nav__menu li:last-child { border-bottom: 0; }
    .nav__toggle { display: block; }

    /* 移动端：语言下拉内联展开，不浮动遮挡 */
    .nav__lang { width: 100%; justify-content: space-between; }
    .nav__lang-menu {
        position: static;
        box-shadow: none;
        border: 0;
        padding: 14px 0 0;
        min-width: 0;
    }
    .nav__lang-menu li { padding: 0; }
    .nav__lang-menu li + li { margin-top: 8px; }
    .nav__lang-menu a {
        display: flex;
        align-items: center;
        min-height: 48px;
        padding: 0 16px;
        border-radius: 12px;
        line-height: 1.2;
    }
}

/* ==========================================================================
   5. Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--r-pill);
    font-family: var(--font-rounded);
    font-size: 15px;
    font-weight: 600;
    line-height: 1;
    border: 0;
    cursor: pointer;
    transition: transform 0.18s var(--ease-out), box-shadow 0.18s var(--ease-out),
                background-color 0.18s var(--ease-out);
    text-decoration: none;
    white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
    background-color: var(--c-sky);
    color: #fff;
    box-shadow: var(--shadow-cta-sky);
}
.btn--primary:hover { background-color: var(--c-sky-deep); color: #fff; }

.btn--vitality {
    background-color: var(--c-vitality);
    color: #fff;
    box-shadow: var(--shadow-cta-vitality);
}
.btn--vitality:hover { background-color: #ee6f25; color: #fff; }

.btn--ghost {
    background-color: var(--c-card);
    color: var(--c-text);
    border: 1px solid var(--c-border);
}
.btn--ghost:hover { background-color: #fff; border-color: #d8d8de; }

.btn--sm { padding: 10px 20px; font-size: 14px; }
.btn--lg { padding: 18px 36px; font-size: 16px; }

/* ==========================================================================
   6. Hero
   ========================================================================== */
.hero {
    position: relative;
    padding: var(--space-20) 0 var(--space-16);
    overflow: hidden;
}
.hero::before {
    content: "";
    position: absolute;
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    width: 900px;
    height: 600px;
    background: radial-gradient(closest-side, rgba(51, 153, 255, 0.14), transparent 70%);
    z-index: 0;
    pointer-events: none;
}
.hero::after {
    content: "";
    position: absolute;
    bottom: -150px;
    right: -100px;
    width: 500px;
    height: 500px;
    background: radial-gradient(closest-side, rgba(255, 128, 51, 0.10), transparent 70%);
    z-index: 0;
    pointer-events: none;
}
.hero__inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: center;
    gap: var(--space-12);
}
.hero__body {
    text-align: left;
}
.hero__art {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}
.hero__art img {
    width: 100%;
    max-width: 380px;
    height: auto;
    display: block;
    filter: drop-shadow(0 18px 36px rgba(51, 102, 153, 0.18));
    animation: hero-float 4.5s ease-in-out infinite;
}
@keyframes hero-float {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-10px); }
}
@media (prefers-reduced-motion: reduce) {
    .hero__art img { animation: none; }
}
.hero__chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: var(--r-pill);
    background-color: var(--c-cheese-soft);
    color: #8B6E00;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: var(--space-5);
}
.hero h1 {
    font-size: 52px;
    font-weight: 800;
    margin-bottom: var(--space-5);
    letter-spacing: -0.02em;
    line-height: 1.1;
}
.hero__subtitle {
    font-size: 18px;
    color: var(--c-text-secondary);
    margin-bottom: var(--space-8);
    line-height: 1.55;
}
.hero__cta {
    display: inline-flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    justify-content: flex-start;
}
.hero__meta {
    margin-top: var(--space-6);
    color: var(--c-text-tertiary);
    font-size: 13px;
}

@media (max-width: 860px) {
    .hero { padding: var(--space-10) 0 var(--space-8); }
    .hero__inner {
        grid-template-columns: 1fr;
        gap: var(--space-6);
        text-align: center;
    }
    .hero__body { text-align: center; }
    .hero__cta { justify-content: center; }
    .hero__art { order: -1; }
    .hero__art img { max-width: 220px; }
    .hero h1 { font-size: 36px; }
    .hero__subtitle { font-size: 17px; }
}

/* ==========================================================================
   7. Section heading
   ========================================================================== */
.section-head {
    text-align: center;
    max-width: 640px;
    margin: 0 auto var(--space-10);
}
.section-head__eyebrow {
    display: inline-block;
    color: var(--c-sky);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: var(--space-3);
}
.section-head h2 {
    margin-bottom: var(--space-3);
}
.section-head p {
    color: var(--c-text-secondary);
    font-size: 17px;
    margin: 0;
}

/* ==========================================================================
   8. Cards / Grid
   ========================================================================== */
.grid {
    display: grid;
    gap: var(--space-5);
}
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

@media (max-width: 980px) {
    .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
    .grid--3, .grid--2 { grid-template-columns: 1fr; }
}

.card {
    background-color: var(--c-card);
    border: 1px solid var(--c-border);
    border-radius: var(--r-card);
    padding: var(--space-6);
    box-shadow: var(--shadow-card);
    transition: transform 0.18s var(--ease-out), box-shadow 0.18s var(--ease-out);
}
.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-card-hover);
}
.card h3 {
    margin-bottom: var(--space-2);
    font-size: 19px;
}
.card p {
    margin: 0;
    color: var(--c-text-secondary);
    font-size: 15px;
    line-height: 1.6;
}

.card__icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-4);
    font-size: 24px;
}
.card__icon--sky      { background-color: var(--c-sky-soft);      color: var(--c-sky); }
.card__icon--vitality { background-color: var(--c-vitality-soft); color: var(--c-vitality); }
.card__icon--cheese   { background-color: var(--c-cheese-soft);   color: #8B6E00; }

/* feature card with image (大卡片) */
.feature {
    position: relative;
    background-color: var(--c-card);
    border-radius: var(--r-card);
    border: 1px solid var(--c-border);
    box-shadow: var(--shadow-card);
    padding: var(--space-10);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-10);
    align-items: center;
}
.feature__step {
    position: absolute;
    top: var(--space-6);
    right: var(--space-6);
    padding: 4px 10px;
    border-radius: var(--r-pill);
    background-color: var(--c-bg);
    color: var(--c-text-tertiary);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.12em;
    border: 1px solid var(--c-border);
    z-index: 2;
}
.feature__body h3 {
    font-size: 26px;
    margin-bottom: var(--space-4);
}
.feature__body p {
    font-size: 16px;
    color: var(--c-text-secondary);
    margin-bottom: var(--space-4);
}
.feature__body ul {
    margin: 0;
    padding-left: 1.2em;
    color: var(--c-text-secondary);
}
.feature__body ul li {
    margin-bottom: var(--space-2);
}
.feature__media {
    display: flex;
    align-items: center;
    justify-content: center;
}
.feature__media img {
    width: 100%;
    max-width: 250px;
    height: auto;
    border-radius: 24px;
    box-shadow: 0 16px 36px rgba(51, 102, 153, 0.16),
                0 4px 10px rgba(0, 0, 0, 0.05);
}
.feature--reverse {
    grid-template-columns: 1fr 1fr;
}
.feature--reverse .feature__media { order: -1; }

@media (max-width: 860px) {
    .feature {
        grid-template-columns: 1fr;
        padding: var(--space-6);
        gap: var(--space-6);
    }
    .feature--reverse .feature__media { order: 0; }
}

/* ==========================================================================
   9. CTA banner
   ========================================================================== */
.cta-banner {
    background: linear-gradient(180deg, #FFFFFF 0%, var(--c-sky-soft) 100%);
    border-radius: var(--r-card);
    padding: var(--space-12);
    text-align: center;
    color: var(--c-text);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--c-border);
}
.cta-banner h2 {
    color: var(--c-text);
    margin-bottom: var(--space-3);
}
.cta-banner p {
    color: var(--c-text-secondary);
    font-size: 17px;
    margin-bottom: var(--space-6);
}
.cta-banner .btn--primary {
    background-color: var(--c-sky);
    color: #fff;
    box-shadow: var(--shadow-cta-sky);
}
.cta-banner .btn--primary:hover {
    background-color: var(--c-sky-deep);
    color: #fff;
}

@media (max-width: 720px) {
    .cta-banner { padding: var(--space-8) var(--space-5); }
}

/* ==========================================================================
   10. Footer
   ========================================================================== */
.site-footer {
    background-color: #fff;
    border-top: 1px solid var(--c-divider);
    padding: var(--space-12) 0 var(--space-8);
    color: var(--c-text-secondary);
    font-size: 14px;
}
.footer__grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}
.footer__col h4 {
    color: var(--c-text);
    font-size: 14px;
    font-weight: 700;
    margin-bottom: var(--space-3);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}
.footer__col ul { list-style: none; padding: 0; margin: 0; }
.footer__col li { margin-bottom: var(--space-2); }
.footer__col a { color: var(--c-text-secondary); }
.footer__col a:hover { color: var(--c-text); }

.footer__brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--c-text);
    font-weight: 700;
    font-size: 18px;
    margin-bottom: var(--space-3);
}
.footer__tagline {
    font-size: 14px;
    color: var(--c-text-secondary);
    line-height: 1.6;
}

.footer__bottom {
    border-top: 1px solid var(--c-divider);
    padding-top: var(--space-5);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-3);
    font-size: 13px;
    color: var(--c-text-tertiary);
}
.footer__icp {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.footer__icp a { color: var(--c-text-tertiary); }

@media (max-width: 860px) {
    .footer__grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-6);
    }
}
@media (max-width: 480px) {
    .footer__grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   11. Legal / Article pages
   ========================================================================== */
.legal {
    padding: var(--space-12) 0 var(--space-16);
}
.legal__header {
    margin-bottom: var(--space-10);
    padding-bottom: var(--space-6);
    border-bottom: 1px solid var(--c-divider);
}
.legal__header h1 {
    font-size: 36px;
    margin-bottom: var(--space-3);
}
.legal__meta {
    color: var(--c-text-tertiary);
    font-size: 14px;
}
.legal__meta span + span { margin-left: var(--space-4); }

.legal-body {
    font-size: 16px;
    line-height: 1.75;
    color: var(--c-text);
}
.legal-body h2 {
    font-size: 24px;
    margin-top: var(--space-10);
    margin-bottom: var(--space-4);
    padding-top: var(--space-4);
}
.legal-body h3 {
    font-size: 18px;
    margin-top: var(--space-6);
    margin-bottom: var(--space-3);
}
.legal-body p, .legal-body li {
    color: var(--c-text);
}
.legal-body strong { color: var(--c-text); }

.legal-body table th { background-color: var(--c-sky-soft); }
.legal-body table { font-size: 14.5px; }

.callout {
    border-left: 4px solid var(--c-sky);
    background-color: var(--c-sky-soft);
    padding: var(--space-4) var(--space-5);
    border-radius: 0 var(--r-card-sm) var(--r-card-sm) 0;
    margin: var(--space-5) 0;
}
.callout--warn {
    border-left-color: var(--c-vitality);
    background-color: var(--c-vitality-soft);
}

/* legal table of contents (sticky) */
.legal-layout {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: var(--space-10);
    align-items: start;
}
.legal-toc {
    position: sticky;
    top: 88px;
    font-size: 14px;
    max-height: calc(100vh - 100px);
    overflow-y: auto;
}
.legal-toc h4 {
    color: var(--c-text-tertiary);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: var(--space-3);
}
.legal-toc ul { list-style: none; padding: 0; margin: 0; }
.legal-toc li { margin-bottom: 6px; }
.legal-toc a {
    display: block;
    padding: 6px 10px;
    border-radius: 8px;
    color: var(--c-text-secondary);
    line-height: 1.45;
}
.legal-toc a:hover { background-color: var(--c-sky-soft); color: var(--c-sky-deep); }

@media (max-width: 980px) {
    .legal-layout { grid-template-columns: 1fr; }
    .legal-toc { display: none; }
}

/* ==========================================================================
   12. Support page extras
   ========================================================================== */
.faq {
    background-color: var(--c-card);
    border: 1px solid var(--c-border);
    border-radius: var(--r-card-sm);
    margin-bottom: var(--space-3);
    overflow: hidden;
}
.faq summary {
    list-style: none;
    cursor: pointer;
    padding: var(--space-5) var(--space-6);
    font-weight: 600;
    color: var(--c-text);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-3);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
    content: "+";
    font-size: 24px;
    color: var(--c-text-tertiary);
    font-weight: 400;
    line-height: 1;
    transition: transform 0.2s var(--ease-out);
}
.faq[open] summary::after { content: "−"; }
.faq__body {
    padding: 0 var(--space-6) var(--space-5);
    color: var(--c-text-secondary);
    line-height: 1.7;
    border-top: 1px solid var(--c-divider);
    padding-top: var(--space-4);
}
.faq__body p:last-child { margin-bottom: 0; }

.contact-card {
    background: linear-gradient(135deg, var(--c-sky-soft), #fff);
    border: 1px solid var(--c-sky-soft);
    border-radius: var(--r-card);
    padding: var(--space-8);
    text-align: center;
}
.contact-card h3 { margin-bottom: var(--space-2); }
.contact-card .email {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--r-pill);
    padding: 10px 16px;
    font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
    font-size: 14px;
    color: var(--c-text);
    margin-top: var(--space-3);
    cursor: pointer;
    transition: border-color 0.2s var(--ease-out);
}
.contact-card .email:hover { border-color: var(--c-sky); }
.contact-card .email-copied {
    color: var(--c-success);
    font-size: 13px;
    margin-left: 8px;
    opacity: 0;
    transition: opacity 0.2s var(--ease-out);
}
.contact-card .email-copied.is-show { opacity: 1; }

/* ==========================================================================
   13. App badges / placeholder
   ========================================================================== */
.app-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 22px;
    background-color: #000;
    color: #fff;
    border-radius: var(--r-card-sm);
    font-size: 15px;
    font-weight: 600;
    transition: opacity 0.2s var(--ease-out);
}
.app-badge:hover { opacity: 0.85; color: #fff; }
.app-badge--disabled,
.app-badge--disabled:hover {
    opacity: 0.65;
    color: #fff;
    cursor: default;
}
.app-badge .icon { width: 28px; height: 28px; }
.app-badge .label-sm { display: block; font-size: 11px; font-weight: 400; opacity: 0.8; }

.media-placeholder {
    width: 100%;
    aspect-ratio: 9 / 16;
    max-width: 280px;
    background: linear-gradient(135deg, var(--c-sky-soft), var(--c-vitality-soft));
    border-radius: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--c-text-tertiary);
    font-size: 13px;
    border: 6px solid #1c1c22;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
    margin: 0 auto;
}

/* Download page: standalone app icon */
.app-icon-showcase {
    width: 144px;
    height: 144px;
    margin: 0 auto var(--space-6);
    border-radius: 32px;
    display: block;
    box-shadow: 0 18px 36px rgba(51, 102, 153, 0.18),
                0 6px 12px rgba(0, 0, 0, 0.06);
}
@media (max-width: 720px) {
    .app-icon-showcase { width: 112px; height: 112px; border-radius: 26px; }
}

/* ==========================================================================
   14. Pricing
   ========================================================================== */
.pricing {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-5);
}
@media (max-width: 860px) {
    .pricing { grid-template-columns: 1fr; }
}

.price-card {
    background-color: var(--c-card);
    border: 1px solid var(--c-border);
    border-radius: var(--r-card);
    padding: var(--space-8);
    box-shadow: var(--shadow-card);
    position: relative;
    text-align: center;
}
.price-card--featured {
    border-color: var(--c-sky);
    border-width: 2px;
    box-shadow: 0 12px 30px rgba(51, 153, 255, 0.18);
}
.price-card__badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--c-vitality);
    color: #fff;
    padding: 4px 14px;
    border-radius: var(--r-pill);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.04em;
}
.price-card h3 {
    font-size: 18px;
    color: var(--c-text-secondary);
    font-weight: 600;
    margin-bottom: var(--space-3);
}
.price-card .price {
    font-size: 44px;
    font-weight: 800;
    color: var(--c-text);
    margin: var(--space-2) 0;
    line-height: 1;
}
.price-card .price small {
    font-size: 16px;
    color: var(--c-text-tertiary);
    font-weight: 500;
}
.price-card ul {
    list-style: none;
    padding: 0;
    margin: var(--space-5) 0;
    text-align: left;
}
.price-card li {
    padding: 8px 0;
    color: var(--c-text-secondary);
    font-size: 14.5px;
    border-bottom: 1px solid var(--c-divider);
}
.price-card li:last-child { border-bottom: 0; }
.price-card li::before {
    content: "✓";
    color: var(--c-sky);
    font-weight: 700;
    margin-right: 8px;
}

/* ==========================================================================
   15. Misc utilities
   ========================================================================== */
.text-center { text-align: center; }
.text-secondary { color: var(--c-text-secondary); }
.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }
.mb-4 { margin-bottom: var(--space-4); }
.visually-hidden {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0,0,0,0);
    white-space: nowrap; border: 0;
}

/* ==========================================================================
   16. 全站设计语言 v2（纸屑 / 数据条为首页专属，其余全局生效）
   ========================================================================== */

/* --- 16.1 标题渐变关键词：呼应 icon 的 sky→vitality 双色 --- */
.text-gradient {
    background: linear-gradient(120deg, var(--c-sky) 10%, var(--c-vitality) 90%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

/* --- 16.2 eyebrow 从大写字母标签改成 App 同款胶囊 chip --- */
.section-head__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: var(--r-pill);
    background-color: var(--c-sky-soft);
    color: var(--c-sky-deep);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0;
    text-transform: none;
    margin-bottom: var(--space-4);
}

/* --- 16.3 Hero 纸屑：把 icon 里的蓝点 / 橙方块 / 黄星撒到角色四周 --- */
.page-home .hero__art { isolation: isolate; }
.page-home .confetti {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    z-index: -1;
    animation: confetti-bob 5s ease-in-out infinite;
}
.page-home .confetti--dot-sky {
    width: 16px; height: 16px;
    background-color: var(--c-sky);
    top: 8%; left: 4%;
    animation-delay: 0s;
}
.page-home .confetti--dot-sky-sm {
    width: 10px; height: 10px;
    background-color: var(--c-sky);
    opacity: 0.7;
    bottom: 14%; right: 2%;
    animation-delay: -1.2s;
}
.page-home .confetti--square-vitality {
    width: 14px; height: 14px;
    border-radius: 4px;
    background-color: var(--c-vitality);
    top: 18%; right: 6%;
    transform: rotate(12deg);
    animation-delay: -2.4s;
}
.page-home .confetti--square-vitality-sm {
    width: 10px; height: 10px;
    border-radius: 3px;
    background-color: var(--c-vitality);
    opacity: 0.75;
    bottom: 8%; left: 12%;
    transform: rotate(-15deg);
    animation-delay: -3.4s;
}
.page-home .confetti--star {
    width: 22px; height: 22px;
    border-radius: 0;
    background-color: var(--c-cheese);
    clip-path: polygon(50% 0%, 63% 37%, 100% 50%, 63% 63%, 50% 100%, 37% 63%, 0% 50%, 37% 37%);
    top: 42%; left: -2%;
    animation-delay: -1.8s;
}
.page-home .confetti--arc {
    width: 26px; height: 13px;
    border-radius: 13px 13px 0 0;
    background: transparent;
    border: 5px solid var(--c-sky);
    border-bottom: 0;
    top: 4%; right: 18%;
    transform: rotate(170deg);
    animation-delay: -2.9s;
}
@keyframes confetti-bob {
    0%, 100% { translate: 0 0; }
    50%      { translate: 0 -8px; }
}
@media (prefers-reduced-motion: reduce) {
    .page-home .confetti { animation: none; }
}

/* --- 16.4 Hero 数据条 --- */
.page-home .stats-strip {
    position: relative;
    z-index: 1;
    margin-top: var(--space-12);
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    background-color: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--c-border);
    border-radius: var(--r-card);
    box-shadow: var(--shadow-card);
    overflow: hidden;
}
.page-home .stats-strip__item {
    padding: var(--space-4) var(--space-2);
    text-align: center;
    border-right: 1px solid var(--c-divider);
}
.page-home .stats-strip__item:last-child { border-right: 0; }
.page-home .stats-strip__num {
    display: block;
    font-size: 25px;
    font-weight: 800;
    letter-spacing: 0;
    color: var(--c-text);
    line-height: 1.2;
}
.page-home .stats-strip__num em {
    font-style: normal;
    background: linear-gradient(120deg, var(--c-sky) 10%, var(--c-vitality) 90%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.page-home .stats-strip__label {
    display: block;
    margin-top: 2px;
    font-size: 12px;
    color: var(--c-text-secondary);
}
@media (max-width: 720px) {
    .page-home .stats-strip { grid-template-columns: repeat(6, 1fr); }
    .page-home .stats-strip__item {
        border-right: 0;
        border-bottom: 0;
    }
    .page-home .stats-strip__item:nth-child(-n+2) {
        grid-column: span 3;
        padding: var(--space-5) var(--space-3);
        border-bottom: 1px solid var(--c-divider);
    }
    .page-home .stats-strip__item:nth-child(1) { border-right: 1px solid var(--c-divider); }
    .page-home .stats-strip__item:nth-child(n+3) {
        grid-column: span 2;
        padding: var(--space-4) var(--space-2);
    }
    .page-home .stats-strip__item:nth-child(3),
    .page-home .stats-strip__item:nth-child(4) { border-right: 1px solid var(--c-divider); }
    .page-home .stats-strip__item:nth-child(-n+2) .stats-strip__num { font-size: 26px; }
    .page-home .stats-strip__item:nth-child(n+3) .stats-strip__num { font-size: 21px; }
    .page-home .stats-strip__item:nth-child(-n+2) .stats-strip__label { font-size: 13px; }
    .page-home .stats-strip__item:nth-child(n+3) .stats-strip__label { font-size: 11px; }
}

/* --- 16.5 卡片 hover 升级：品牌色羽化 + icon 弹一下（全局） --- */
.card { border-radius: var(--r-card); }
.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 14px 32px rgba(51, 153, 255, 0.14);
    border-color: rgba(51, 153, 255, 0.35);
}
.card__icon { transition: transform 0.25s var(--ease-out); }
.card:hover .card__icon { transform: scale(1.12) rotate(-4deg); }

/* --- 16.6 CTA 横幅：角色探出头（全局） --- */
.cta-banner--mascot {
    position: relative;
    margin-top: 56px;             /* 给探出的角色留空间 */
    overflow: visible;
}
.cta-banner__mascot {
    position: absolute;
    top: -72px;
    left: 50%;
    transform: translateX(-50%);
    width: 96px;
    height: 96px;
    pointer-events: none;
    filter: drop-shadow(0 8px 16px rgba(51, 102, 153, 0.20));
    animation: hero-float 4.5s ease-in-out infinite;
}
@media (prefers-reduced-motion: reduce) {
    .cta-banner__mascot { animation: none; }
}
.cta-banner {
    background:
        radial-gradient(ellipse 60% 80% at 20% 10%, rgba(51, 153, 255, 0.10), transparent 60%),
        radial-gradient(ellipse 50% 70% at 85% 90%, rgba(255, 128, 51, 0.10), transparent 60%),
        linear-gradient(180deg, #FFFFFF 0%, var(--c-sky-soft) 100%);
}