:root {
    --bg: #f7f4fb;
    --surface: #ffffff;
    --surface-soft: #f5efff;
    --text: #251739;
    --muted: #726484;
    --line: rgba(111, 59, 255, 0.14);
    --primary: #6f3bff;
    --primary-deep: #4f22c6;
    --accent: #ff62c0;
    --accent-soft: #ffe8f6;
    --shadow: 0 14px 36px rgba(66, 25, 118, 0.12);
    --radius: 8px;
    --max: 1120px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(255, 98, 192, 0.14), transparent 30%),
        linear-gradient(180deg, #fbf9ff 0%, var(--bg) 100%);
}

a {
    color: inherit;
}

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

.faq-shell {
    min-height: 100vh;
}

.hero {
    padding: 28px 18px 22px;
    background:
        linear-gradient(135deg, rgba(111, 59, 255, 0.96), rgba(255, 98, 192, 0.92)),
        #5d30d8;
    color: #fff;
}

.hero-inner,
.toolbar-inner,
.section-inner,
.footer-inner {
    width: min(100%, var(--max));
    margin: 0 auto;
}

.hero-top {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: flex-start;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    min-height: 32px;
    padding: 0 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.14);
    font-size: 13px;
}

.hero-link {
    display: inline-flex;
    align-items: center;
    min-height: 36px;
    padding: 0 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.16);
    color: #fff;
    text-decoration: none;
    font-size: 14px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-title {
    margin: 18px 0 10px;
    font-size: clamp(30px, 7vw, 52px);
    line-height: 1.08;
}

.hero-subtitle {
    margin: 0 0 12px;
    font-size: 18px;
    font-weight: 600;
}

.hero-description {
    margin: 0;
    max-width: 820px;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.75;
    font-size: 15px;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    margin-top: 20px;
}

.hero-stat {
    min-height: 58px;
    padding: 14px 12px;
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.18);
    font-size: 14px;
    display: flex;
    align-items: center;
}

.toolbar {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(247, 244, 251, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(111, 59, 255, 0.1);
}

.toolbar-inner {
    padding: 14px 18px;
}

.toolbar-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
}

.search-wrap {
    display: none;/*flex;*/
    align-items: center;
    min-height: 50px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: 0 10px 24px rgba(81, 45, 168, 0.07);
}

.search-input {
    width: 100%;
    padding: 0 16px;
    border: 0;
    outline: none;
    background: transparent;
    font-size: 15px;
    color: var(--text);
}

.chip-row {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 2px;
}

.chip-row::-webkit-scrollbar {
    display: none;
}

.chip {
    flex: 0 0 auto;
    min-height: 36px;
    padding: 0 14px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: var(--surface);
    color: var(--muted);
    cursor: pointer;
    font-size: 13px;
}

.chip.is-active {
    color: #fff;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-color: transparent;
}

.result-bar {
    font-size: 13px;
    color: var(--muted);
}

.section {
    padding: 28px 18px 0;
}

.section-inner {
    padding-bottom: 8px;
}

.section-head {
    margin-bottom: 14px;
}

.section-title {
    margin: 0 0 6px;
    font-size: 24px;
}

.section-desc {
    margin: 0;
    color: var(--muted);
    line-height: 1.7;
    font-size: 14px;
}

.faq-list {
    display: grid;
    gap: 12px;
}

.faq-item {
    border: 1px solid rgba(111, 59, 255, 0.12);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.faq-item[open] {
    border-color: rgba(111, 59, 255, 0.25);
}

.faq-summary {
    list-style: none;
    padding: 16px;
    cursor: pointer;
}

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

.faq-headline {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 14px;
    align-items: start;
}

.faq-question {
    margin: 0;
    font-size: 18px;
    line-height: 1.45;
}

.faq-arrow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 999px;
    background: var(--surface-soft);
    color: var(--primary);
    font-size: 16px;
    transition: transform 0.2s ease;
}

.faq-item[open] .faq-arrow {
    transform: rotate(45deg);
}

.faq-summary-text {
    margin: 10px 0 0;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.7;
}

.faq-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 12px;
}

.faq-tag {
    min-height: 28px;
    padding: 0 10px;
    border-radius: 999px;
    background: var(--accent-soft);
    color: #9b2f77;
    font-size: 12px;
    display: inline-flex;
    align-items: center;
}

.faq-answer {
    border-top: 1px solid rgba(111, 59, 255, 0.08);
    padding: 0 16px 18px;
}

.block {
    margin-top: 16px;
}

.block p {
    margin: 0;
    line-height: 1.82;
    font-size: 15px;
    color: #322347;
}

.block-title {
    margin: 0 0 10px;
    font-size: 16px;
    color: var(--primary-deep);
}

.block-list {
    margin: 0;
    padding-left: 18px;
    color: #322347;
}

.block-list li {
    margin-bottom: 10px;
    line-height: 1.76;
}

.callout {
    padding: 14px;
    border-radius: var(--radius);
    background: linear-gradient(180deg, rgba(255, 98, 192, 0.08), rgba(111, 59, 255, 0.08));
    border: 1px solid rgba(255, 98, 192, 0.18);
}

.callout-title {
    margin: 0 0 8px;
    font-size: 15px;
    color: #8f1f76;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.cards-grid.cards-grid-wide {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.info-card {
    min-height: 100%;
    padding: 16px;
    border-radius: var(--radius);
    background: linear-gradient(180deg, #fff, #fbf7ff);
    border: 1px solid rgba(111, 59, 255, 0.12);
}

.info-card-title {
    margin: 0;
    font-size: 17px;
}

.info-card-subtitle {
    margin: 6px 0 0;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.6;
}

.info-card-badge {
    display: inline-flex;
    align-items: center;
    margin-top: 10px;
    min-height: 28px;
    padding: 0 10px;
    border-radius: 999px;
    background: rgba(111, 59, 255, 0.08);
    color: var(--primary);
    font-size: 12px;
}

.info-card-desc {
    margin: 12px 0 0;
    color: #3b2b50;
    font-size: 14px;
    line-height: 1.72;
}

.info-card-list {
    margin: 12px 0 0;
    padding-left: 18px;
}

.info-card-list li {
    margin-bottom: 8px;
    line-height: 1.7;
    font-size: 14px;
}

.figure {
    overflow: hidden;
    border-radius: var(--radius);
    border: 1px solid rgba(111, 59, 255, 0.12);
    background: #fff;
}

.figure-image {
    display: block;
    text-decoration: none;
}

.figure-caption {
    margin: 0;
    padding: 12px 14px;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.65;
    border-top: 1px solid rgba(111, 59, 255, 0.08);
}

.comparison {
    padding: 16px;
    border-radius: var(--radius);
    background: linear-gradient(180deg, #fff, #f9f5ff);
    border: 1px solid rgba(111, 59, 255, 0.12);
}

.comparison-title {
    margin: 0 0 8px;
    font-size: 17px;
}

.comparison-intro,
.comparison-note {
    margin: 0;
    font-size: 14px;
    line-height: 1.74;
    color: #403054;
}

.comparison-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-top: 14px;
}

.comparison-column {
    padding: 14px;
    border-radius: var(--radius);
    border: 1px solid rgba(111, 59, 255, 0.1);
}

.comparison-column.is-negative {
    background: #fff7fc;
}

.comparison-column.is-positive {
    background: #f7f4ff;
}

.comparison-column h5 {
    margin: 0 0 10px;
    font-size: 15px;
}

.comparison-column ul {
    margin: 0;
    padding-left: 18px;
}

.comparison-column li {
    margin-bottom: 8px;
    line-height: 1.7;
    font-size: 14px;
}

.comparison-note {
    margin-top: 14px;
    color: var(--muted);
}

.empty {
    padding: 40px 18px 60px;
}

.empty-card {
    width: min(100%, 680px);
    margin: 0 auto;
    padding: 22px;
    border-radius: var(--radius);
    background: #fff;
    border: 1px solid rgba(111, 59, 255, 0.12);
    text-align: center;
    color: var(--muted);
}

.footer {
    padding: 34px 18px 42px;
}

.footer-card {
    padding: 18px;
    border-radius: var(--radius);
    background: var(--surface);
    border: 1px solid rgba(111, 59, 255, 0.12);
}

.footer-title {
    margin: 0 0 8px;
    font-size: 16px;
}

.footer-text {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.7;
}

@media (max-width: 860px) {
    .cards-grid,
    .cards-grid.cards-grid-wide,
    .comparison-grid,
    .hero-stats {
        grid-template-columns: minmax(0, 1fr);
    }
}

@media (max-width: 640px) {
    .hero {
        padding-top: 22px;
    }

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

    .hero-title {
        font-size: 34px;
    }

    .section-title {
        font-size: 21px;
    }

    .faq-summary,
    .faq-answer {
        padding-left: 14px;
        padding-right: 14px;
    }

    .faq-question {
        font-size: 16px;
    }
}