/* =========================================================
   gw_syxkj 官网共享样式表
   风格：简约专业 · 科技蓝白
   作者：前端工程实现
   说明：所有页面共用，响应式适配 PC / 平板 / 移动端
   ========================================================= */

/* ---------- 1. 设计变量 ---------- */
:root {
    --color-primary: #3673FA;          /* 主蓝 */
    --color-primary-dark: #3462E5;     /* 深蓝（悬停） */
    --color-primary-light: #eff6ff;    /* 浅蓝背景 */
    --color-primary-lighter: #dbeafe;  /* 浅蓝边框 */
    --color-accent: #0ea5e9;           /* 点缀天蓝 */
    --color-text: #1e293b;             /* 主文本 */
    --color-text-muted: #64748b;       /* 次要文本 */
    --color-bg: #ffffff;               /* 页面背景 */
    --color-bg-alt: #f8fafc;           /* 交替区块背景 */
    --color-border: #e2e8f0;           /* 分隔线 */
    --color-footer: #212D48;           /* 页脚深色 */
    --color-footer-muted: #94a3b8;     /* 页脚次要文字 */
    --color-white: #ffffff;

    --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);
    --shadow: 0 6px 20px rgba(15, 23, 42, .08);
    --shadow-lg: 0 16px 48px rgba(15, 23, 42, .12);

    --radius: 14px;
    --radius-sm: 10px;
    --radius-full: 999px;

    --container: 1200px;
    --header-h: 70px;

    --gradient-hero: linear-gradient(135deg, #2563eb 0%, #1d4ed8 50%, #1e40af 100%);
    --gradient-soft: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
}

/* ---------- 2. 基础重置 ---------- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    scroll-padding-top: calc(var(--header-h) + 12px);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", "PingFang SC", "Hiragino Sans GB",
        "Microsoft YaHei", sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
    list-style: none;
}

h1, h2, h3, h4 {
    line-height: 1.25;
    letter-spacing: -0.02em;
    color: var(--color-text);
}

/* ---------- 3. 通用布局 ---------- */
.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 84px 0;
}

.section--alt {
    background: var(--color-bg-alt);
}

.section__head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 56px;
}

.section__title {
    font-size: 34px;
    font-weight: 700;
    margin-bottom: 14px;
}

.section__subtitle {
    color: var(--color-text-muted);
    font-size: 17px;
}

.eyebrow {
    display: inline-block;
    color: var(--color-primary);
    font-weight: 600;
    font-size: 13px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 14px;
}

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

/* ---------- 4. 按钮 ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 26px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 16px;
    line-height: 1;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.btn--primary {
    background: var(--color-primary);
    color: var(--color-white);
}

.btn--primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn--ghost {
    background: transparent;
    color: var(--color-primary);
    border: 1.5px solid var(--color-primary-lighter);
}

.btn--ghost:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
}

.btn--light {
    background: rgba(255, 255, 255, 0.14);
    color: var(--color-white);
    border: 1.5px solid rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(4px);
}

.btn--light:hover {
    background: rgba(255, 255, 255, 0.26);
    transform: translateY(-2px);
}

.btn--lg {
    padding: 15px 34px;
    font-size: 17px;
}

.btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

/* App Store 下载徽章 */
.appstore-badge {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 11px 22px;
    background: #000;
    color: #fff;
    border-radius: var(--radius-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.appstore-badge:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.appstore-badge__icon {
    width: 26px;
    height: 26px;
    flex-shrink: 0;
}

.appstore-badge__text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.appstore-badge__text small {
    font-size: 11px;
    opacity: 0.85;
}

.appstore-badge__text strong {
    font-size: 17px;
    font-weight: 600;
}

/* ---------- 5. 顶部导航 ---------- */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    border-bottom: 1px solid var(--color-border);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-h);
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 18px;
    color: var(--color-text);
}

.brand__logo {
    height: 38px;
    width: auto;
}

.brand__name {
    letter-spacing: -0.01em;
}

.nav {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav__link {
    padding: 9px 16px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    color: var(--color-text);
    transition: all 0.2s ease;
}

.nav__link:hover {
    color: var(--color-primary);
    background: var(--color-primary-light);
}

.nav__link--active {
    color: var(--color-primary);
    background: var(--color-primary-light);
    font-weight: 600;
}

.nav__cta {
    margin-left: 10px;
}

/* 汉堡按钮（移动端） */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all 0.25s ease;
    margin: 0 auto;
}

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

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

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

/* ---------- 6. 首页 Hero ---------- */
.hero {
    position: relative;
    background: var(--gradient-hero);
    color: var(--color-white);
    overflow: hidden;
    padding: 96px 0 100px;
}

.hero::before,
.hero::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    filter: blur(2px);
    opacity: 0.18;
}

.hero::before {
    width: 480px;
    height: 480px;
    background: radial-gradient(circle, #60a5fa, transparent 70%);
    top: -160px;
    right: -120px;
}

.hero::after {
    width: 380px;
    height: 380px;
    background: radial-gradient(circle, #38bdf8, transparent 70%);
    bottom: -160px;
    left: -100px;
}

.hero__inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 56px;
    align-items: center;
}

.hero__eyebrow {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.04em;
    margin-bottom: 22px;
}

.hero__title {
    font-size: 46px;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 18px;
    color: var(--color-white);
}

.hero__title2 {
    font-size: 36px;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 18px;
    color: var(--color-white);
}

.hero__desc {
    font-size: 18px;
    opacity: 0.92;
    margin-bottom: 30px;
    max-width: 520px;
}

.hero__company {
    margin-top: 26px;
    font-size: 14px;
    opacity: 0.8;
}

.hero__company strong {
    opacity: 1;
    font-weight: 600;
}

/* Hero 视觉占位（手机框） */
.hero__visual {
    position: relative;
    display: flex;
    justify-content: center;
}

.phone-mock {
    width: 260px;
    height: 520px;
    background: linear-gradient(160deg, #1e3a8a, #2563eb);
    border: 8px solid rgba(255, 255, 255, 0.92);
    border-radius: 38px;
    box-shadow: var(--shadow-lg);
    padding: 26px 18px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    position: relative;
}

.phone-mock::before {
    content: "";
    position: absolute;
    top: 14px;
    left: 50%;
    transform: translateX(-50%);
    width: 90px;
    height: 6px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-full);
}

.phone-mock__bar {
    height: 38px;
    background: rgba(255, 255, 255, 0.18);
    border-radius: 8px;
}

.phone-mock__line {
    height: 12px;
    background: rgba(255, 255, 255, 0.22);
    border-radius: 6px;
}

.phone-mock__line:nth-child(4) {
    width: 70%;
}

.phone-mock__block {
    flex: 1;
    background: rgba(255, 255, 255, 0.14);
    border-radius: 12px;
}

/* ---------- 7. 功能卡片 ---------- */
.grid {
    display: grid;
    gap: 28px;
}

.grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
    grid-template-columns: repeat(4, 1fr);
}

.card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 32px 28px;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-lighter);
}

.card__icon {
    width: 54px;
    height: 54px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: 14px;
    margin-bottom: 20px;
}

.card__icon svg {
    width: 28px;
    height: 28px;
}

.card__title {
    font-size: 19px;
    font-weight: 700;
    margin-bottom: 10px;
}

.card__desc {
    color: var(--color-text-muted);
    font-size: 15px;
}

/* ---------- 8. 通用页面横幅（子页面顶部） ---------- */
.page-hero {
    background: var(--gradient-soft);
    padding: 72px 0 64px;
    text-align: center;
    border-bottom: 1px solid var(--color-border);
}

.page-hero__eyebrow {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 13px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 14px;
}

.page-hero__title {
    font-size: 38px;
    font-weight: 800;
    margin-bottom: 14px;
}

.page-hero__desc {
    color: var(--color-text-muted);
    font-size: 17px;
    max-width: 640px;
    margin: 0 auto;
}

/* ---------- 9. 内容排版（关于 / 隐私页） ---------- */
.prose {
    max-width: 820px;
    margin: 0 auto;
    font-size: 16px;
    color: var(--color-text);
}

.prose h2 {
    font-size: 26px;
    font-weight: 700;
    margin: 40px 0 16px;
}

.prose h2:first-child {
    margin-top: 0;
}

.prose h3 {
    font-size: 19px;
    font-weight: 700;
    margin: 28px 0 12px;
}

.prose p {
    margin-bottom: 16px;
    color: var(--color-text);
}

.prose ul {
    margin: 0 0 18px;
    padding-left: 22px;
    list-style: disc;
}

.prose ul li {
    margin-bottom: 8px;
}

.prose a {
    color: var(--color-primary);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.prose strong {
    font-weight: 600;
}

/* 信息行（关于页） */
.info-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
    max-width: 820px;
    margin: 0 auto;
}

.info-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 26px 28px;
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.info-card__icon {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: 12px;
}

.info-card__icon svg {
    width: 22px;
    height: 22px;
}

.info-card__label {
    font-size: 13px;
    color: var(--color-text-muted);
    margin-bottom: 4px;
}

.info-card__value {
    font-size: 16px;
    font-weight: 600;
    word-break: break-word;
}

/* 公司简介块 */
.about-intro {
    max-width: 820px;
    margin: 0 auto 48px;
    text-align: center;
}

.about-intro p {
    color: var(--color-text-muted);
    font-size: 17px;
}

/* ---------- 10. App 介绍页 ---------- */
.feature-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
    margin-bottom: 72px;
}

.feature-row:last-child {
    margin-bottom: 0;
}

.feature-row--reverse .feature-row__media {
    order: 2;
}

.feature-row__media {
    background: var(--gradient-soft);
    border-radius: var(--radius);
    min-height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-border);
}

.feature-row__media .phone-mock {
    transform: scale(0.78);
    transform-origin: center;
}

.feature-row__num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 50%;
    font-weight: 700;
    margin-bottom: 18px;
}

.feature-row__title {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 14px;
}

.feature-row__desc {
    color: var(--color-text-muted);
    font-size: 16px;
    margin-bottom: 18px;
}

.feature-row__list li {
    position: relative;
    padding-left: 28px;
    margin-bottom: 10px;
    color: var(--color-text);
}

.feature-row__list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 8px;
    width: 16px;
    height: 16px;
    background: var(--color-primary);
    mask: url("data:image/svg+xml,%3Csvg xmlns='http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center / contain no-repeat;
    -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center / contain no-repeat;
    border-radius: 4px;
}

/* 适用人群标签 */
.audience {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: center;
}

.audience__tag {
    padding: 10px 22px;
    background: var(--color-bg);
    border: 1px solid var(--color-primary-lighter);
    color: var(--color-primary);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 15px;
    transition: all 0.2s ease;
}

.audience__tag:hover {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

/* ---------- 11. 下载引导区 ---------- */
.cta-band {
    background: var(--gradient-hero);
    color: #fff;
    text-align: center;
    padding: 76px 0;
    position: relative;
    overflow: hidden;
}

.cta-band::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 20%, rgba(96, 165, 250, 0.35), transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(56, 189, 248, 0.3), transparent 50%);
}

.cta-band__inner {
    position: relative;
    z-index: 1;
}

.cta-band__title {
    font-size: 32px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 14px;
}

.cta-band__desc {
    font-size: 17px;
    opacity: 0.92;
    margin-bottom: 30px;
}

.cta-band .appstore-badge {
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.35);
}

/* ---------- 12. 页脚 ---------- */
.footer {
    background: var(--color-footer);
    color: var(--color-footer-muted);
    padding: 56px 0 28px;
}

.footer__grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer__brand {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    color: #fff;
    font-weight: 700;
    font-size: 18px;
}

.footer__brand img {
    height: 38px;
}

.footer__about {
    font-size: 14px;
    line-height: 1.7;
    max-width: 300px;
}

.footer__col h4 {
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer__col ul li {
    margin-bottom: 10px;
}

.footer__col ul li a {
    font-size: 14px;
    color: var(--color-footer-muted);
    transition: color 0.2s ease;
}

.footer__col ul li a:hover {
    color: #fff;
}

.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 24px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    font-size: 13px;
}

.footer__bottom a {
    color: var(--color-footer-muted);
}

.footer__bottom a:hover {
    color: #fff;
}

.footer__icp {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: center;
}

/* ---------- 13. 响应式 ---------- */
@media (max-width: 992px) {
    .hero__title {
        font-size: 38px;
    }

    .footer__grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }

    .section__title {
        font-size: 28px;
    }

    /* 移动端导航 */
    .nav-toggle {
        display: flex;
    }

    .nav {
        position: fixed;
        top: var(--header-h);
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        background: #fff;
        border-bottom: 1px solid var(--color-border);
        padding: 10px 16px 18px;
        box-shadow: var(--shadow);
        transform: translateY(-12px);
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.22s ease, transform 0.22s ease;
        max-height: calc(100vh - var(--header-h));
        overflow-y: auto;
    }

    .nav.is-open {
        opacity: 1;
        transform: translateY(0);
        pointer-events: auto;
    }

    .nav__link {
        padding: 14px 12px;
        border-radius: var(--radius-sm);
        font-size: 16px;
        border-bottom: 1px solid var(--color-bg-alt);
    }

    .nav__cta {
        margin: 12px 0 0;
        text-align: center;
    }

    .nav__cta .btn {
        width: 100%;
    }

    /* Hero 单列 */
    .hero {
        padding: 64px 0 72px;
    }

    .hero__inner {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .hero__desc {
        margin-left: auto;
        margin-right: auto;
    }

    .hero__title {
        font-size: 32px;
    }

    .hero__visual {
        order: -1;
    }

    .phone-mock {
        width: 200px;
        height: 410px;
    }

    .btn-group {
        justify-content: center;
    }

    /* 网格转单列 */
    .grid--3,
    .grid--4 {
        grid-template-columns: 1fr;
    }

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

    .feature-row {
        grid-template-columns: 1fr;
        gap: 32px;
        margin-bottom: 48px;
    }

    .feature-row--reverse .feature-row__media {
        order: 0;
    }

    .page-hero {
        padding: 52px 0 48px;
    }

    .page-hero__title {
        font-size: 30px;
    }

    .cta-band__title {
        font-size: 26px;
    }

    .footer__grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .footer__bottom {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 18px;
    }

    .hero__title {
        font-size: 28px;
    }

    .section__title {
        font-size: 25px;
    }

    .btn {
        padding: 11px 22px;
        font-size: 15px;
    }

    .card {
        padding: 26px 22px;
    }
}

/* ---------- 14. 无障碍与动效 ---------- */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
        scroll-behavior: auto !important;
    }
}

:focus-visible {
    outline: 2.5px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: 4px;
}

/* ---------- 15. App 截图展示 ---------- */
.screenshot {
    display: block;
    width: 100%;
    height: auto;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
}

/* Hero 区真实截图（替代手机占位） */
.hero__shot {
    position: relative;
    display: flex;
    justify-content: center;
}

.hero__shot .screenshot {
    max-width: 300px;
    border-radius: 24px;
    border: 8px solid #fff;
}

/* App 介绍页截图展示 */
.feature-row__shot {
    background: var(--gradient-soft);
    border-radius: var(--radius);
    min-height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-border);
    padding: 28px;
}

.feature-row__shot .screenshot {
    max-width: 240px;
    border-radius: 20px;
    border: 6px solid #fff;
}

/* 双截图并排展示 */
.shot-pair {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
    align-items: center;
}

.shot-pair .screenshot {
    max-width: 240px;
    border-radius: 20px;
    border: 6px solid #fff;
}

.shot-caption {
    text-align: center;
    color: var(--color-text-muted);
    font-size: 14px;
    margin-top: 12px;
}

/* ---------- 16. "即将上线" 徽章 ---------- */
.coming-soon {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 26px;
    background: rgba(255, 255, 255, 0.14);
    color: var(--color-white);
    border: 1.5px solid rgba(255, 255, 255, 0.4);
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 16px;
    backdrop-filter: blur(4px);
    cursor: default;
}

.coming-soon__dot {
    width: 8px;
    height: 8px;
    background: #4ade80;
    border-radius: 50%;
    animation: pulse 1.6s ease-in-out infinite;
}

.coming-soon--dark {
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-color: var(--color-primary-lighter);
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.3); }
}

@media (max-width: 768px) {
    .hero__shot .screenshot {
        max-width: 220px;
    }

    .feature-row__shot .screenshot,
    .shot-pair .screenshot {
        max-width: 200px;
    }
}

/* ---------- 17. 图片懒加载渐显（JS 渐进增强） ---------- */
img.fade-in {
    opacity: 0;
    transition: opacity 0.4s ease;
}

img.fade-in.loaded {
    opacity: 1;
}

/* ---------- 18. 404 页面 ---------- */
.not-found {
    min-height: calc(100vh - var(--header-h));
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-soft);
    padding: 80px 0;
    text-align: center;
}

.not-found__inner {
    max-width: 640px;
    margin: 0 auto;
}

.not-found__code {
    font-size: 140px;
    font-weight: 800;
    line-height: 1;
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    letter-spacing: -0.04em;
    margin-bottom: 16px;
}

.not-found__title {
    font-size: 34px;
    font-weight: 800;
    margin-bottom: 16px;
}

.not-found__desc {
    color: var(--color-text-muted);
    font-size: 17px;
    margin-bottom: 34px;
}

.not-found__actions {
    justify-content: center;
    margin-bottom: 44px;
}

.not-found__hint {
    color: var(--color-text-muted);
    font-size: 14px;
    margin-bottom: 14px;
}

.not-found__links {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    justify-content: center;
}

.not-found__links a {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 15px;
    transition: color 0.2s ease;
}

.not-found__links a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

@media (max-width: 480px) {
    .not-found__code {
        font-size: 96px;
    }

    .not-found__title {
        font-size: 26px;
    }

    .not-found__desc {
        font-size: 15px;
    }
}

/* ---------- 19. 隐私政策页（华为版）增强 ---------- */
/* 发布主体与版本信息 */
.policy-meta {
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 22px 26px;
    margin-bottom: 28px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px 28px;
    font-size: 14px;
    color: var(--color-text);
}

.policy-meta__label {
    display: inline-block;
    min-width: 96px;
    color: var(--color-text-muted);
    font-weight: 500;
    margin-right: 8px;
}

/* 华为应用市场须知框 */
.policy-notice {
    background: var(--color-primary-light);
    border: 1px solid var(--color-primary-lighter);
    border-left: 4px solid var(--color-primary);
    border-radius: var(--radius);
    padding: 22px 26px;
    margin: 24px 0 32px;
}

.policy-notice--inline {
    margin: 16px 0;
    background: var(--color-primary-light);
}

.policy-notice__title {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.policy-notice p,
.policy-notice ul,
.policy-notice ol {
    color: var(--color-text);
    font-size: 15px;
}

.policy-notice ul,
.policy-notice ol {
    margin: 8px 0 0;
    padding-left: 22px;
}

.policy-notice ul {
    list-style: disc;
}

.policy-notice li {
    margin-bottom: 8px;
}

/* 目录 */
.policy-toc {
    columns: 2;
    column-gap: 32px;
    list-style: disc;
    padding-left: 22px;
    margin: 0 0 24px;
    font-size: 15px;
    color: var(--color-text);
}

.policy-toc li {
    margin-bottom: 6px;
    break-inside: avoid;
}

/* 有序列表（政策条款） */
ol.policy-list {
    margin: 0 0 18px;
    padding-left: 26px;
    list-style: decimal;
    color: var(--color-text);
}

ol.policy-list li {
    margin-bottom: 10px;
}

ol.policy-list ul {
    margin: 8px 0 0;
    padding-left: 22px;
    list-style: disc;
}

@media (max-width: 768px) {
    .policy-meta {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .policy-toc {
        columns: 1;
    }
}