@charset "UTF-8";

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

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

body {
    font-family: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: #333;
    line-height: 1.6;
    background: #fff;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
}

a, button {
    -webkit-tap-highlight-color: transparent;
    outline: none;
}

ul {
    list-style: none;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

[class^="icon-"] {
    display: inline-block;
    font-style: normal;
    line-height: 0;
    vertical-align: middle;
    font-size: 28px;
}

[class^="icon-"]::before {
    content: "";
    display: block;
    width: 100%;
    height: 100%;
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
}

.icon-android::before {
    background-image: url("../icons/android-dark.svg");
}

.icon-apple::before {
    background-image: url("../icons/apple-dark.svg");
}

.icon-menu::before {
    background-image: url("../icons/menu.svg");
}

.icon-close::before {
    background-image: url("../icons/close.svg");
}

.icon-arrow-up::before {
    background-image: url("../icons/arrow-up.svg");
}

.download-btn.primary .icon-apple::before {
    background-image: url("../icons/apple-white.svg");
}

.download-btn.primary .icon-android::before {
    background-image: url("../icons/android-white.svg");
}

.download-btn.secondary .icon-apple::before {
    background-image: url("../icons/apple-dark.svg");
}

.download-btn.secondary .icon-android::before {
    background-image: url("../icons/android-dark.svg");
}

.cta-btn .icon-apple::before {
    background-image: url("../icons/apple-dark.svg");
}

.cta-btn .icon-android::before {
    background-image: url("../icons/android-dark.svg");
}

.back-to-top .icon-arrow-up::before {
    background-image: url("../icons/arrow-up-white.svg");
}

.nav-toggle .icon-menu,
.nav-toggle .icon-close {
    font-size: 26px;
}

.nav-toggle .icon-menu::before,
.nav-toggle .icon-close::before {
    width: 26px;
    height: 26px;
}

.download-btn .icon-android,
.download-btn .icon-apple {
    font-size: 28px;
}

.download-btn .icon-android::before,
.download-btn .icon-apple::before {
    width: 28px;
    height: 28px;
}

.cta-btn .icon-android,
.cta-btn .icon-apple {
    font-size: 32px;
}

.cta-btn .icon-android::before,
.cta-btn .icon-apple::before {
    width: 32px;
    height: 32px;
}

.back-to-top .icon-arrow-up {
    font-size: 22px;
}

.back-to-top .icon-arrow-up::before {
    width: 22px;
    height: 22px;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: box-shadow 0.3s ease, background 0.3s ease;
}

.header.scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

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

.logo-link {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-link img {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    object-fit: cover;
}

.logo-name {
    font-size: 22px;
    font-weight: 700;
    color: #333;
    letter-spacing: 1px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 36px;
}

.nav-menu li a {
    font-size: 15px;
    color: #555;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu li a::after {
    content: "";
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background: #FF8C42;
    transition: width 0.3s ease;
}

.nav-menu li a:hover {
    color: #FF8C42;
}

.nav-menu li a:hover::after {
    width: 100%;
}

.nav-menu li a.active {
    color: #FF8C42;
}

.nav-menu li a.active::after {
    width: 100%;
}

.header-btn {
    background: linear-gradient(135deg, #FF8C42, #FFB347);
    color: #fff;
    padding: 9px 24px;
    border-radius: 24px;
    font-size: 14px;
    font-weight: 500;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: inline-block;
}

.header-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(255, 140, 66, 0.4);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 26px;
    color: #333;
    cursor: pointer;
    padding: 4px;
    line-height: 1;
}

.hero {
    padding-top: 120px;
    padding-bottom: 80px;
    background: linear-gradient(135deg, #FFE4C4 0%, #FFF5EB 50%, #FFF8F0 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 140, 66, 0.25) 0%, transparent 70%);
    border-radius: 50%;
}

.hero::after {
    content: "";
    position: absolute;
    bottom: -150px;
    left: -150px;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(255, 179, 71, 0.18) 0%, transparent 70%);
    border-radius: 50%;
}

.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    position: relative;
    z-index: 2;
}

.hero-text {
    flex: 1;
    max-width: 560px;
}

.hero-title {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.25;
    margin-bottom: 20px;
    color: #333;
}

.hero-title span {
    color: #FF8C42;
}

.hero-desc {
    font-size: 17px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 32px;
}

.hero-desc .highlight {
    color: #FF8C42;
    font-weight: 600;
}

.download-group {
    display: flex;
    gap: 16px;
    margin-bottom: 36px;
    flex-wrap: wrap;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 28px;
    border-radius: 14px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.download-btn i {
    font-size: 28px;
}

.download-btn .dl-info {
    display: flex;
    flex-direction: column;
    line-height: 1.3;
}

.download-btn .dl-label {
    font-size: 11px;
    opacity: 0.85;
}

.download-btn .dl-name {
    font-size: 16px;
    font-weight: 700;
}

.download-btn.primary {
    background: linear-gradient(135deg, #FF8C42, #FFB347);
    color: #fff;
    box-shadow: 0 8px 20px rgba(255, 140, 66, 0.35);
}

.download-btn.primary:hover {
    transform: translateY(-4px);
    box-shadow: 0 14px 28px rgba(255, 140, 66, 0.45);
}

.download-btn.secondary {
    background: #fff;
    color: #333;
    border: 2px solid #FFE4C4;
}

.download-btn.secondary:hover {
    transform: translateY(-4px);
    box-shadow: 0 14px 28px rgba(0, 0, 0, 0.1);
    border-color: #FFB347;
}

.hero-stats {
    display: flex;
    gap: 36px;
}

.stat-item .stat-num {
    font-size: 28px;
    font-weight: 800;
    color: #FF8C42;
}

.stat-item .stat-label {
    font-size: 13px;
    color: #888;
}

.hero-visual {
    flex-shrink: 0;
    width: 300px;
    position: relative;
}

.phone-mockup {
    width: 280px;
    height: 560px;
    background: linear-gradient(145deg, #333, #1a1a1a);
    border-radius: 40px;
    padding: 14px;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.25), inset 0 0 0 2px rgba(255, 255, 255, 0.08);
    margin: 0 auto;
    position: relative;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: #1a1a1a;
    border-radius: 28px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.phone-notch {
    width: 90px;
    height: 18px;
    background: #1a1a1a;
    border-radius: 0 0 14px 14px;
    margin: 0 auto;
    flex-shrink: 0;
}

.phone-img {
    flex: 1;
    width: 100%;
    object-fit: cover;
    border-radius: 0 0 28px 28px;
}

.floating-tag {
    position: absolute;
    background: #fff;
    border-radius: 12px;
    padding: 8px 14px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    font-size: 13px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
    z-index: 3;
}

.floating-tag.top {
    top: 60px;
    right: -10px;
    color: #FF8C42;
}

.floating-tag.bottom {
    bottom: 100px;
    left: -20px;
    color: #333;
}

.floating-tag .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #4CAF50;
}

.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 34px;
    font-weight: 800;
    color: #333;
    margin-bottom: 12px;
}

.section-title h2 span {
    color: #FF8C42;
}

.section-title p {
    font-size: 15px;
    color: #999;
}

.features {
    background: #FFFDF8;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-card {
    background: #fff;
    border-radius: 18px;
    padding: 32px 24px;
    text-align: center;
    border: 1px solid #FFF0E0;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 36px rgba(255, 140, 66, 0.12);
    border-color: #FFE4C4;
}

.feature-icon {
    width: 60px;
    height: 60px;
    border-radius: 18px;
    margin: 0 auto 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
}

.feature-icon.orange { background: linear-gradient(135deg, #FFE4C4, #FFD4A8); }
.feature-icon.yellow { background: linear-gradient(135deg, #FFF5D4, #FFE89A); }
.feature-icon.pink { background: linear-gradient(135deg, #FFE4E4, #FFD4D4); }
.feature-icon.green { background: linear-gradient(135deg, #E4F9E4, #D4F4D4); }

.feature-card h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 10px;
    color: #333;
}

.feature-card p {
    font-size: 13px;
    color: #888;
    line-height: 1.7;
}

.screenshots {
    background: #fff;
}

.scroll-hint {
    text-align: center;
    margin-top: 10px;
    padding: 0 20px;
}

.scroll-hint span {
    display: block;
    font-size: 12px;
    color: #999;
    margin-bottom: 8px;
    letter-spacing: 2px;
}

.scroll-hint-bar {
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, #FF8C42, #FFB347);
    border-radius: 2px;
    margin: 0 auto;
    animation: scrollHint 1.5s ease-in-out infinite;
}

@keyframes scrollHint {
    0%, 100% { transform: translateX(-30px); opacity: 0.5; }
    50% { transform: translateX(30px); opacity: 1; }
}

.screenshots-wrapper {
    display: flex;
    gap: 20px;
    overflow-x: scroll;
    padding: 10px 0 20px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: #FF8C42 #f0f0f0;
}

.screenshots-wrapper::-webkit-scrollbar {
    height: 10px;
    -webkit-appearance: none;
    display: block;
}

.screenshots-wrapper::-webkit-scrollbar-track {
    background: #f0f0f0;
    border-radius: 5px;
}

.screenshots-wrapper::-webkit-scrollbar-thumb {
    background: linear-gradient(90deg, #FF8C42, #FFB347);
    border-radius: 5px;
}

.screenshots-wrapper::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(90deg, #FF7A30, #FFA337);
}

.screenshot-card {
    flex: 0 0 220px;
    scroll-snap-align: center;
    transition: transform 0.3s ease;
}

.screenshot-card:hover {
    transform: translateY(-6px);
}

.screenshot-frame {
    width: 100%;
    aspect-ratio: 9 / 19;
    background: #fff;
    border-radius: 24px;
    padding: 0;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    position: relative;
}

.screenshot-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: 24px;
}

.cta {
    background: linear-gradient(135deg, #FF8C42 0%, #FFB347 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: "";
    position: absolute;
    top: -50%;
    left: -20%;
    width: 140%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(255, 255, 255, 0.08) 0%, transparent 50%);
}

.cta .container {
    position: relative;
    z-index: 2;
}

.cta h2 {
    font-size: 40px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 14px;
}

.cta p {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 36px;
}

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

.cta-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px 36px;
    background: #fff;
    border-radius: 18px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.cta-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.15);
}

.cta-btn i { font-size: 32px; color: #333; }

.cta-btn .dl-info { display: flex; flex-direction: column; line-height: 1.3; text-align: left; }
.cta-btn .dl-label { font-size: 11px; color: #999; }
.cta-btn .dl-name { font-size: 18px; font-weight: 700; color: #333; }

.cta-note {
    margin-top: 24px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
}

.footer {
    background: #2D2D2D;
    color: #fff;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand .logo-link {
    margin-bottom: 16px;
}

.footer-brand .logo-name { color: #fff; }

.footer-brand p {
    font-size: 14px;
    color: #999;
    line-height: 1.8;
    margin-bottom: 16px;
}

.footer-col h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 18px;
    color: #fff;
}

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

.footer-col ul li a {
    color: #999;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-col ul li a:hover {
    color: #FF8C42;
}

.footer-bottom {
    border-top: 1px solid #444;
    padding-top: 24px;
    text-align: center;
    font-size: 13px;
    color: #666;
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 46px;
    height: 46px;
    background: linear-gradient(135deg, #FF8C42, #FFB347);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 22px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 16px rgba(255, 140, 66, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 24px rgba(255, 140, 66, 0.5);
}

@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 64px;
        left: 0;
        width: 100%;
        background: #fff;
        flex-direction: column;
        gap: 0;
        padding: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    }

    .nav-menu.open {
        max-height: 400px;
    }

    .nav-menu li {
        width: 100%;
        border-bottom: 1px solid #f0f0f0;
    }

    .nav-menu li a {
        display: block;
        padding: 14px 20px;
        font-size: 15px;
    }

    .nav-menu li a::after { display: none; }

    .header-btn { display: none; }

    .nav-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .hero {
        padding-top: 90px;
        padding-bottom: 50px;
    }

    .hero .container {
        flex-direction: column;
        text-align: center;
    }

    .hero-text {
        max-width: 100%;
        order: 2;
    }

    .hero-visual {
        order: 1;
        width: 100%;
        margin-bottom: 30px;
    }

    .phone-mockup {
        width: 220px;
        height: 440px;
    }

    .floating-tag.top { right: 10px; top: 30px; }
    .floating-tag.bottom { left: 10px; bottom: 60px; }

    .hero-title { font-size: 32px; }

    .hero-desc { font-size: 15px; }

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

    .download-btn {
        padding: 12px 22px;
    }

    .download-btn i { font-size: 24px; }

    .download-btn .icon-android::before,
    .download-btn .icon-apple::before {
        width: 24px;
        height: 24px;
    }

    .hero-stats {
        justify-content: center;
        gap: 24px;
    }

    .stat-item .stat-num { font-size: 22px; }

    .section { padding: 50px 0; }

    .section-title h2 { font-size: 26px; }

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

    .feature-card { padding: 24px 20px; }

    .screenshots-wrapper {
        display: flex;
        gap: 12px;
        overflow-x: auto;
        padding: 10px 0 20px;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
    }

    .screenshots-wrapper::-webkit-scrollbar {
        height: 8px;
        -webkit-appearance: none;
        display: block;
    }

    .screenshots-wrapper::-webkit-scrollbar-track {
        background: #f0f0f0;
        border-radius: 4px;
    }

    .screenshots-wrapper::-webkit-scrollbar-thumb {
        background: linear-gradient(90deg, #FF8C42, #FFB347);
        border-radius: 4px;
    }

    .screenshots-wrapper::-webkit-scrollbar-thumb:hover {
        background: linear-gradient(90deg, #FF7A30, #FFA337);
    }

    .screenshot-card { flex: 0 0 45%; scroll-snap-align: start; }

    .cta h2 { font-size: 28px; }

    .cta p { font-size: 15px; }

    .cta-btn { padding: 14px 28px; }

    .cta-btn i { font-size: 26px; }

    .cta-btn .icon-android::before,
    .cta-btn .icon-apple::before {
        width: 26px;
        height: 26px;
    }

    .cta-btn .dl-name { font-size: 15px; }

    .footer-content {
        grid-template-columns: repeat(3, 1fr);
        gap: 15px;
    }

    .footer-brand { grid-column: 1 / -1; text-align: center; }

    .footer-col { margin-top: 10px; }

    .footer-col h4 { font-size: 13px; margin-bottom: 10px; }

    .footer-col ul li { margin-bottom: 6px; }

    .footer-col ul li a { font-size: 12px; }

    .back-to-top {
        width: 42px;
        height: 42px;
        font-size: 20px;
        bottom: 20px;
        right: 20px;
    }
}

@media (max-width: 480px) {
    .hero-title { font-size: 26px; }

    .download-group { flex-direction: column; align-items: stretch; }

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

    .hero-stats { gap: 16px; }

    .stat-item .stat-num { font-size: 20px; }
    .stat-item .stat-label { font-size: 12px; }

    .footer-content { grid-template-columns: repeat(3, 1fr); gap: 10px; }

    .footer-col h4 { font-size: 12px; }

    .footer-col ul li a { font-size: 11px; }

    .cta-buttons { flex-direction: column; align-items: center; }

    .cta-btn { width: 100%; max-width: 280px; justify-content: center; }

    .logo-name { font-size: 18px; }
    .logo-link img { width: 34px; height: 34px; }
}