/* ==========================================================================
   码支付 · 官网样式表（简约白色系）
   目录：
   1. 变量与基础重置
   2. 背景装饰
   3. 通用组件（容器 / 按钮 / 标题）
   4. 顶部导航
   5. 首屏 Hero
   6. 特性卡片
   7. 图文分栏
   8. 数据统计
   9. 支付方式
   10. 行动号召
   11. 页脚
   12. 动画与响应式
   ========================================================================== */

/* ---------- 1. 变量与基础重置 ---------- */
:root {
    --bg: #ffffff;
    --bg-soft: #fafbfc;
    --ink: #0d1117;
    --text: #2b3138;
    --muted: #6b7684;
    --faint: #9aa4b2;
    --line: #ebedf0;
    --line-strong: #dde1e6;
    --accent: #10796f;
    --accent-deep: #0b5b54;
    --accent-soft: #f0f7f6;
    --radius-sm: 10px;
    --radius: 16px;
    --radius-lg: 22px;
    --container: 1160px;
    --shadow-xs: 0 1px 2px rgba(16, 24, 40, 0.05);
    --shadow-sm: 0 2px 6px rgba(16, 24, 40, 0.05), 0 1px 2px rgba(16, 24, 40, 0.04);
    --shadow: 0 18px 40px rgba(16, 24, 40, 0.1);
    --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

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

body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.75;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

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

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

ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

h1, h2, h3, h4, p {
    margin: 0;
}

::selection {
    background: rgba(16, 121, 111, 0.14);
    color: var(--ink);
}

::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-soft);
}

::-webkit-scrollbar-thumb {
    background: #d8dce1;
    border-radius: 10px;
    border: 3px solid var(--bg-soft);
}

::-webkit-scrollbar-thumb:hover {
    background: #c2c8d0;
}

/* ---------- 2. 背景装饰 ---------- */
.bg-decor {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.bg-decor__grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(13, 17, 23, 0.028) 1px, transparent 1px),
        linear-gradient(90deg, rgba(13, 17, 23, 0.028) 1px, transparent 1px);
    background-size: 72px 72px;
    mask-image: radial-gradient(circle at 50% 0%, #000 0%, transparent 58%);
    -webkit-mask-image: radial-gradient(circle at 50% 0%, #000 0%, transparent 58%);
}

.bg-decor__glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(110px);
}

.bg-decor__glow--one {
    width: 720px;
    height: 720px;
    top: -420px;
    left: 50%;
    transform: translateX(-50%);
    background: radial-gradient(circle, rgba(16, 121, 111, 0.1), transparent 68%);
}

.bg-decor__glow--two {
    width: 520px;
    height: 520px;
    top: 240px;
    right: -240px;
    background: radial-gradient(circle, rgba(90, 140, 190, 0.08), transparent 70%);
}

.bg-decor__glow--three {
    display: none;
}

/* ---------- 3. 通用组件 ---------- */
.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

.section {
    padding: 108px 0;
    position: relative;
    border-top: 1px solid var(--line);
}

.section__head {
    max-width: 680px;
    margin: 0 auto 64px;
    text-align: center;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 5px 14px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: var(--bg-soft);
    color: var(--muted);
    font-size: 12.5px;
    letter-spacing: 0.08em;
    margin-bottom: 22px;
}

.eyebrow::before {
    content: "";
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--accent);
}

.section__title {
    font-size: clamp(27px, 3.2vw, 38px);
    line-height: 1.32;
    font-weight: 700;
    letter-spacing: -0.025em;
    color: var(--ink);
}

.section__desc {
    margin-top: 18px;
    color: var(--muted);
    font-size: 16px;
}

.grad-text {
    color: var(--accent);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 999px;
    border: 1px solid transparent;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), background 0.3s var(--ease), border-color 0.3s var(--ease), color 0.3s var(--ease);
    white-space: nowrap;
}

.btn--primary {
    background: var(--ink);
    color: #ffffff;
    box-shadow: var(--shadow-sm);
}

.btn--primary:hover {
    transform: translateY(-2px);
    background: #000000;
    box-shadow: 0 12px 28px rgba(13, 17, 23, 0.22);
}

.btn--ghost {
    background: #ffffff;
    border-color: var(--line-strong);
    color: var(--ink);
}

.btn--ghost:hover {
    transform: translateY(-2px);
    border-color: var(--ink);
    box-shadow: var(--shadow-sm);
}

.btn--block {
    width: 100%;
}

/* ---------- 4. 顶部导航 ---------- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 60;
    transition: background 0.35s var(--ease), backdrop-filter 0.35s var(--ease), border-color 0.35s var(--ease);
    border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: saturate(180%) blur(18px);
    -webkit-backdrop-filter: saturate(180%) blur(18px);
    border-bottom-color: var(--line);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    height: 76px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 11px;
    font-weight: 700;
    font-size: 18px;
    letter-spacing: -0.01em;
    color: var(--ink);
}

.brand__logo {
    width: 36px;
    height: 36px;
    border-radius: 11px;
}

.brand__name {
    color: var(--ink);
}

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

.nav__link {
    position: relative;
    padding: 8px 14px;
    border-radius: 8px;
    color: var(--muted);
    font-size: 15px;
    transition: color 0.25s var(--ease), background 0.25s var(--ease);
}

.nav__link:hover {
    color: var(--ink);
    background: var(--bg-soft);
}

.nav__cta {
    margin-left: 10px;
    padding: 10px 22px;
    font-size: 14.5px;
}

.nav__toggle {
    display: none;
    width: 42px;
    height: 42px;
    border-radius: 11px;
    border: 1px solid var(--line-strong);
    background: #ffffff;
    cursor: pointer;
    padding: 0;
    position: relative;
}

.nav__toggle span,
.nav__toggle span::before,
.nav__toggle span::after {
    position: absolute;
    left: 50%;
    width: 17px;
    height: 1.5px;
    border-radius: 2px;
    background: var(--ink);
    transform: translateX(-50%);
    transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

.nav__toggle span {
    top: 50%;
    margin-top: -1px;
}

.nav__toggle span::before,
.nav__toggle span::after {
    content: "";
}

.nav__toggle span::before {
    top: -5.5px;
}

.nav__toggle span::after {
    top: 5.5px;
}

.nav__toggle.is-open span {
    background: transparent;
}

.nav__toggle.is-open span::before {
    transform: translateX(-50%) translateY(5.5px) rotate(45deg);
}

.nav__toggle.is-open span::after {
    transform: translateX(-50%) translateY(-5.5px) rotate(-45deg);
}

/* ---------- 5. 首屏 Hero ---------- */
.hero {
    padding: 172px 0 112px;
    position: relative;
}

.hero__inner {
    display: grid;
    grid-template-columns: 1.03fr 1fr;
    align-items: center;
    gap: 72px;
}

/* 防止图片固有宽度撑开网格列 */
.hero__inner > *,
.split > * {
    min-width: 0;
}

.hero__title {
    font-size: clamp(32px, 4.2vw, 52px);
    line-height: 1.22;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--ink);
    margin-bottom: 22px;
}

.hero__desc {
    color: var(--muted);
    font-size: 17px;
    max-width: 520px;
    margin-bottom: 34px;
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 34px;
}

.hero__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 15px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: #ffffff;
    color: var(--muted);
    font-size: 13.5px;
}

.meta-item svg {
    width: 15px;
    height: 15px;
    flex: none;
    color: var(--accent);
}

.hero__visual {
    position: relative;
}

.hero__visual img {
    width: 100%;
    border-radius: var(--radius-lg);
    border: 1px solid var(--line);
    box-shadow: 0 30px 70px rgba(16, 24, 40, 0.12), 0 2px 6px rgba(16, 24, 40, 0.04);
}

.float-badge {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 11px;
    padding: 12px 16px;
    border-radius: 14px;
    background: #ffffff;
    border: 1px solid var(--line);
    box-shadow: 0 12px 30px rgba(16, 24, 40, 0.12);
    font-size: 13px;
}

.float-badge strong {
    display: block;
    font-size: 15px;
    color: var(--ink);
    letter-spacing: -0.01em;
}

.float-badge small {
    color: var(--faint);
    font-size: 12px;
}

.float-badge__icon {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    display: grid;
    place-items: center;
    flex: none;
    background: var(--accent-soft);
}

.float-badge--tl {
    top: -20px;
    left: -26px;
}

.float-badge--br {
    bottom: -22px;
    right: -20px;
}

/* 运行时间 */
.uptime {
    margin-top: 72px;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 13px 22px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: var(--bg-soft);
    font-size: 14px;
    color: var(--muted);
}

.uptime__dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #12a150;
    animation: pulse 2s ease-in-out infinite;
}

.uptime__value {
    font-variant-numeric: tabular-nums;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: 0.01em;
}

.uptime__value em {
    font-style: normal;
    color: var(--ink);
    font-weight: 700;
}

/* ---------- 6. 特性卡片 ---------- */
.cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.feature {
    position: relative;
    padding: 34px 30px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--line);
    background: #ffffff;
    transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.feature:hover {
    transform: translateY(-4px);
    border-color: var(--line-strong);
    box-shadow: 0 20px 44px rgba(16, 24, 40, 0.08);
}

.feature__icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    margin-bottom: 24px;
    background: var(--accent-soft);
    display: grid;
    place-items: center;
}

.feature__icon img {
    width: 26px;
    height: 26px;
}

.feature__title {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.015em;
    color: var(--ink);
    margin-bottom: 10px;
}

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

/* ---------- 7. 图文分栏 ---------- */
.split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 72px;
}

.split--reverse .split__media {
    order: 2;
}

.split__media {
    position: relative;
}

.split__media img {
    position: relative;
    z-index: 1;
    width: 100%;
    border-radius: var(--radius-lg);
    border: 1px solid var(--line);
    box-shadow: 0 24px 56px rgba(16, 24, 40, 0.09);
}

.split__title {
    font-size: clamp(25px, 3vw, 35px);
    font-weight: 700;
    line-height: 1.34;
    letter-spacing: -0.025em;
    color: var(--ink);
    margin-bottom: 18px;
}

.split__desc {
    color: var(--muted);
    margin-bottom: 28px;
}

.check-list {
    display: grid;
    gap: 14px;
    margin-bottom: 32px;
}

.check-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: var(--text);
    font-size: 15px;
}

.check-list svg {
    width: 20px;
    height: 20px;
    flex: none;
    margin-top: 4px;
    color: var(--accent);
}

/* ---------- 8. 数据统计 ---------- */
.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.stat {
    text-align: center;
    padding: 44px 24px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--line);
    background: #ffffff;
    transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.stat:hover {
    transform: translateY(-4px);
    border-color: var(--line-strong);
    box-shadow: 0 20px 44px rgba(16, 24, 40, 0.08);
}

.stat__num {
    display: inline-block;
    font-size: clamp(34px, 4vw, 46px);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.04em;
    font-variant-numeric: tabular-nums;
    color: var(--ink);
}

.stat__unit {
    font-size: 15px;
    font-weight: 600;
    color: var(--accent);
    margin-left: 5px;
}

.stat__label {
    margin-top: 12px;
    color: var(--muted);
    font-size: 14.5px;
}

/* ---------- 9. 支付方式 ---------- */
.pay-list {
    display: grid;
    gap: 14px;
}

.pay-item {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 20px 22px;
    border-radius: var(--radius);
    border: 1px solid var(--line);
    background: #ffffff;
    transition: border-color 0.32s var(--ease), box-shadow 0.32s var(--ease), transform 0.32s var(--ease);
}

.pay-item:hover {
    transform: translateX(4px);
    border-color: var(--line-strong);
    box-shadow: 0 12px 28px rgba(16, 24, 40, 0.07);
}

.pay-item__icon {
    width: 46px;
    height: 46px;
    flex: none;
    border-radius: 13px;
}

.pay-item__title {
    font-size: 16.5px;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--ink);
    margin-bottom: 4px;
}

.pay-item__desc {
    color: var(--muted);
    font-size: 14.5px;
}

/* ---------- 10. 行动号召 ---------- */
.cta {
    position: relative;
    display: grid;
    grid-template-columns: 1.5fr auto;
    align-items: center;
    gap: 36px;
    padding: 52px 56px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--line);
    background: var(--bg-soft);
    overflow: hidden;
}

.cta::before {
    content: "";
    position: absolute;
    top: -140px;
    right: -60px;
    width: 420px;
    height: 420px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(16, 121, 111, 0.09), transparent 68%);
    filter: blur(20px);
}

.cta__title {
    font-size: clamp(24px, 2.8vw, 32px);
    font-weight: 700;
    line-height: 1.34;
    letter-spacing: -0.025em;
    color: var(--ink);
    margin-bottom: 14px;
    position: relative;
}

.cta__desc {
    color: var(--muted);
    max-width: 540px;
    position: relative;
}

.cta__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    position: relative;
}

/* ---------- 11. 页脚 ---------- */
.site-footer {
    padding: 76px 0 44px;
    border-top: 1px solid var(--line);
    background: var(--bg-soft);
}

.footer__top {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 44px;
    padding-bottom: 44px;
    border-bottom: 1px solid var(--line);
}

.footer__about {
    color: var(--muted);
    font-size: 14.5px;
    margin-top: 18px;
    max-width: 360px;
}

.footer__title {
    font-size: 14.5px;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 18px;
}

.footer__links {
    display: grid;
    gap: 11px;
}

.footer__links a {
    color: var(--muted);
    font-size: 14.5px;
    transition: color 0.25s var(--ease);
}

.footer__links a:hover {
    color: var(--accent);
}

.footer__bottom {
    padding-top: 28px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    text-align: center;
    color: var(--faint);
    font-size: 13.5px;
}

.footer__bottom a {
    color: var(--muted);
    transition: color 0.25s var(--ease);
}

.footer__bottom a:hover {
    color: var(--accent);
}

.footer__beian {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}

/* 点击特效文字 */
.click-word {
    position: absolute;
    z-index: 9999;
    pointer-events: none;
    font-weight: 700;
    color: var(--accent);
    opacity: 0.9;
    animation: fadeUp 1.5s ease-out forwards;
}

/* 飘浮粒子 */
.particle-layer {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.particle {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    background: var(--accent);
    opacity: 0;
}

/* ---------- 12. 动画与响应式 ---------- */
@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.78); }
}

@keyframes fadeUp {
    0% { transform: translateY(0) scale(1); opacity: 0.9; }
    100% { transform: translateY(-140px) scale(1.1); opacity: 0; }
}

@keyframes riseUp {
    0% { transform: translateY(0); opacity: 0; }
    12% { opacity: 0.18; }
    100% { transform: translateY(-100vh); opacity: 0; }
}

[data-reveal] {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.75s var(--ease), transform 0.75s var(--ease);
    will-change: opacity, transform;
}

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

@media (max-width: 1024px) {
    .hero__inner {
        grid-template-columns: 1fr;
        gap: 56px;
        text-align: center;
    }

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

    .hero__actions,
    .hero__meta {
        justify-content: center;
    }

    .uptime {
        margin-top: 48px;
    }

    .float-badge--tl {
        left: 10px;
    }

    .float-badge--br {
        right: 10px;
    }

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

    .split--reverse .split__media {
        order: 0;
    }

    .cards,
    .stats {
        grid-template-columns: repeat(2, 1fr);
    }

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

@media (max-width: 768px) {
    .section {
        padding: 72px 0;
    }

    .hero {
        padding: 132px 0 76px;
    }

    .section__head {
        margin-bottom: 44px;
    }

    .nav__toggle {
        display: block;
    }

    .nav__menu {
        position: absolute;
        top: 78px;
        left: 16px;
        right: 16px;
        flex-direction: column;
        align-items: stretch;
        gap: 2px;
        padding: 12px;
        border-radius: var(--radius);
        border: 1px solid var(--line);
        background: rgba(255, 255, 255, 0.96);
        backdrop-filter: blur(18px);
        -webkit-backdrop-filter: blur(18px);
        box-shadow: 0 20px 50px rgba(16, 24, 40, 0.12);
        opacity: 0;
        transform: translateY(-10px);
        pointer-events: none;
        transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
    }

    .nav__menu.is-open {
        opacity: 1;
        transform: none;
        pointer-events: auto;
    }

    .nav__link {
        padding: 12px 14px;
    }

    .nav__cta {
        margin-left: 0;
        margin-top: 6px;
        text-align: center;
    }

    .cards,
    .stats {
        grid-template-columns: 1fr;
    }

    .cta {
        grid-template-columns: 1fr;
        padding: 34px 26px;
        text-align: center;
    }

    .cta__actions {
        justify-content: center;
    }

    .feature,
    .stat {
        padding: 28px 22px;
    }

    .footer__top {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
    }

    [data-reveal] {
        opacity: 1;
        transform: none;
    }
}