:root {
    --bg: #f7f0e4;
    --bg-strong: #f1e2ca;
    --surface: rgba(255, 252, 247, 0.88);
    --surface-strong: #fffaf2;
    --line: rgba(111, 78, 55, 0.14);
    --text: #2f2317;
    --text-soft: #6c5c4b;
    --accent: #cb6434;
    --accent-strong: #9e4320;
    --accent-soft: #ffe0c0;
    --forest: #325647;
    --forest-soft: #dde9e0;
    --shadow: 0 24px 60px rgba(109, 71, 40, 0.12);
    --radius-xl: 32px;
    --radius-lg: 24px;
    --radius-md: 18px;
    --content-width: 1180px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(255, 191, 125, 0.38), transparent 28%),
        radial-gradient(circle at 85% 10%, rgba(91, 142, 116, 0.16), transparent 24%),
        linear-gradient(180deg, #fcf6ed 0%, var(--bg) 52%, #f8efe3 100%);
    font-family: "PingFang SC", "Hiragino Sans GB", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
    line-height: 1.65;
}

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

img {
    max-width: 100%;
}

.site-shell {
    width: min(calc(100% - 40px), var(--content-width));
    margin: 0 auto;
}

.page-shell {
    padding-bottom: 48px;
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    margin-top: 22px;
    padding: 14px 18px;
    background: rgba(255, 249, 242, 0.72);
    border: 1px solid rgba(111, 78, 55, 0.08);
    backdrop-filter: blur(16px);
    border-radius: 999px;
    box-shadow: 0 14px 36px rgba(95, 66, 44, 0.08);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
}

.brand-mark {
    display: block;
    width: 38px;
    height: 38px;
    border-radius: 14px;
    box-shadow: 0 14px 28px rgba(203, 100, 52, 0.28);
    object-fit: cover;
}

.brand-text {
    font-size: 1rem;
    letter-spacing: 0.02em;
}

.nav {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    color: var(--text-soft);
    font-size: 0.95rem;
}

.nav a[aria-current="page"] {
    color: var(--accent-strong);
    font-weight: 700;
}

.hero,
.section,
.page-hero {
    margin-top: 28px;
}

.hero {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 28px;
    align-items: stretch;
    padding: 28px 0 10px;
}

.hero-copy,
.hero-visual,
.panel,
.download-panel,
.page-hero {
    position: relative;
    overflow: hidden;
    background: var(--surface);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    border-radius: var(--radius-xl);
}

.hero-copy {
    padding: 44px;
}

.hero-copy::before,
.hero-visual::before,
.download-panel::before,
.page-hero::before {
    content: "";
    position: absolute;
    inset: auto auto 0 0;
    width: 180px;
    height: 180px;
    background: radial-gradient(circle, rgba(255, 208, 150, 0.34), transparent 70%);
    pointer-events: none;
}

.hero-visual {
    display: grid;
    place-items: center;
    min-height: 520px;
    padding: 32px;
    background:
        linear-gradient(180deg, rgba(255, 248, 237, 0.92), rgba(248, 237, 221, 0.92)),
        radial-gradient(circle at top, rgba(255, 189, 115, 0.25), transparent 42%);
}

.eyebrow {
    margin: 0 0 12px;
    color: var(--accent-strong);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-size: 0.78rem;
    font-weight: 700;
}

h1,
h2,
h3,
blockquote {
    margin: 0;
    font-family: "Iowan Old Style", "Palatino Linotype", "Songti SC", "STSong", serif;
    line-height: 1.1;
}

h1 {
    font-size: clamp(2.7rem, 5vw, 5.3rem);
    letter-spacing: -0.03em;
}

h2 {
    font-size: clamp(2rem, 3vw, 3.2rem);
    letter-spacing: -0.02em;
}

h3 {
    font-size: 1.35rem;
}

p {
    margin: 0;
}

.hero-text,
.hero-caption,
.section-heading p,
.feature-card p,
.privacy-card p,
.download-panel p,
.policy-section p,
.faq-item p,
.contact-card p,
.footer p {
    color: var(--text-soft);
}

.hero-text {
    margin-top: 22px;
    font-size: 1.08rem;
    max-width: 30rem;
}

.hero-actions,
.inline-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 28px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 0 22px;
    border-radius: 999px;
    font-weight: 700;
    transition: transform 160ms ease, box-shadow 160ms ease, background-color 160ms ease;
}

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

.button-primary {
    color: #fff8f3;
    background: linear-gradient(135deg, var(--accent) 0%, #e38c42 100%);
    box-shadow: 0 18px 38px rgba(203, 100, 52, 0.24);
}

.button-secondary {
    color: var(--accent-strong);
    background: rgba(255, 243, 228, 0.96);
    border: 1px solid rgba(158, 67, 32, 0.12);
}

.hero-notes {
    display: grid;
    gap: 10px;
    padding: 0;
    margin: 28px 0 0;
    list-style: none;
}

.hero-notes li,
.check-list li {
    position: relative;
    padding-left: 26px;
}

.hero-notes li::before,
.check-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.62em;
    width: 10px;
    height: 10px;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--accent) 0%, #efab66 100%);
    box-shadow: 0 0 0 6px rgba(203, 100, 52, 0.10);
}

.hero-caption {
    margin-top: 24px;
    font-size: 0.98rem;
}

.visual-panel {
    width: 100%;
    max-width: 430px;
    display: grid;
    gap: 16px;
}

.metric-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.metric-card {
    padding: 22px;
    border-radius: 24px;
    background: rgba(255, 252, 247, 0.94);
    border: 1px solid rgba(111, 78, 55, 0.1);
}

.metric-card.large {
    min-height: 210px;
    background: linear-gradient(180deg, rgba(255, 243, 226, 0.95), rgba(255, 250, 245, 0.98));
}

.metric-card.accent {
    background: linear-gradient(180deg, rgba(226, 240, 231, 0.96), rgba(249, 252, 250, 0.94));
}

.metric-label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-soft);
    font-size: 0.86rem;
}

.metric-card strong {
    display: block;
    font-family: "Iowan Old Style", "Palatino Linotype", "Songti SC", serif;
    font-size: clamp(1.5rem, 2.3vw, 2.3rem);
}

.metric-note {
    display: block;
    margin-top: 12px;
    color: var(--text-soft);
}

.section {
    padding: 22px 0;
}

.section-heading {
    max-width: 760px;
    margin-bottom: 24px;
}

.section-heading h2 {
    margin-bottom: 12px;
}

.feature-grid,
.privacy-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.feature-card,
.privacy-card {
    padding: 28px;
    border-radius: var(--radius-lg);
    background: var(--surface);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
}

.feature-index {
    display: inline-block;
    margin-bottom: 18px;
    color: var(--accent-strong);
    font-size: 0.88rem;
    font-weight: 700;
    letter-spacing: 0.1em;
}

.feature-card h3,
.privacy-card h3 {
    margin-bottom: 12px;
}

.section-split {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 20px;
}

.panel {
    padding: 34px;
}

.statement-panel {
    background: linear-gradient(180deg, rgba(255, 250, 242, 0.96), rgba(253, 245, 233, 0.92));
}

.quote-panel {
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: linear-gradient(180deg, rgba(227, 239, 231, 0.94), rgba(247, 251, 248, 0.94));
}

blockquote {
    font-size: clamp(1.7rem, 3vw, 2.8rem);
    color: var(--forest);
}

.check-list {
    display: grid;
    gap: 14px;
    padding: 0;
    margin: 22px 0;
    list-style: none;
}

.privacy-section .privacy-grid {
    margin-top: 24px;
}

.privacy-card {
    background: rgba(255, 250, 243, 0.9);
}

.download-panel {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 36px 40px;
    background:
        linear-gradient(135deg, rgba(255, 241, 219, 0.92), rgba(255, 249, 242, 0.92)),
        radial-gradient(circle at right, rgba(101, 155, 126, 0.14), transparent 30%);
}

.download-panel h2 {
    margin-bottom: 10px;
}

.download-note {
    margin-top: 12px;
}

.page-hero {
    padding: 38px 40px;
}

.page-hero h1 {
    margin-bottom: 12px;
}

.support-contact {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.contact-card.alt {
    background: linear-gradient(180deg, rgba(226, 240, 231, 0.94), rgba(250, 253, 251, 0.94));
}

.muted {
    color: var(--text-soft);
}

.faq-list {
    display: grid;
    gap: 14px;
}

.faq-item {
    padding: 4px 22px 18px;
    border-radius: var(--radius-md);
    background: rgba(255, 252, 247, 0.88);
    border: 1px solid rgba(111, 78, 55, 0.1);
    box-shadow: 0 12px 28px rgba(109, 71, 40, 0.06);
}

.faq-item summary {
    cursor: pointer;
    list-style: none;
    padding: 18px 0 8px;
    font-weight: 700;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item p {
    padding-bottom: 4px;
}

.version-card {
    background: linear-gradient(180deg, rgba(255, 247, 234, 0.94), rgba(255, 252, 247, 0.92));
}

.policy-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 20px;
    align-items: start;
}

.policy-nav {
    position: sticky;
    top: 96px;
    display: grid;
    gap: 10px;
}

.policy-nav a {
    color: var(--text-soft);
    font-size: 0.96rem;
}

.policy-content {
    display: grid;
    gap: 16px;
}

.policy-section h2 {
    margin-bottom: 12px;
    font-size: 1.5rem;
}

.footer {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr 0.8fr;
    gap: 20px;
    align-items: start;
    padding: 22px 0 54px;
}

.footer-links,
.footer-meta {
    display: grid;
    gap: 10px;
}

@media (max-width: 1080px) {
    .hero,
    .section-split,
    .support-contact,
    .policy-layout,
    .footer {
        grid-template-columns: 1fr;
    }

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

    .policy-nav {
        position: static;
    }

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

@media (max-width: 720px) {
    .site-shell {
        width: min(calc(100% - 24px), var(--content-width));
    }

    .topbar {
        position: static;
        flex-direction: column;
        align-items: flex-start;
        border-radius: 26px;
    }

    .hero-copy,
    .hero-visual,
    .panel,
    .download-panel,
    .page-hero,
    .feature-card,
    .privacy-card {
        padding: 24px;
        border-radius: 24px;
    }

    .feature-grid,
    .privacy-grid,
    .metric-grid {
        grid-template-columns: 1fr;
    }

    h1 {
        font-size: clamp(2.3rem, 11vw, 3.5rem);
    }

    h2 {
        font-size: clamp(1.7rem, 8vw, 2.5rem);
    }
}