/**
 * PaperFix 文稿修复平台 — 产品官网
 * 品牌色：图标蓝 #2563EB、修复绿 #22C55E
 */

:root {
    --cta: #2563eb;
    --cta-hover: #1d4ed8;
    --cta-light: #eff6ff;
    --accent-green: #22c55e;
    --ink: #0f172a;
    --ink-soft: #111827;
    --muted: #64748b;
    --muted-2: #515660;
    --line: #e2e8f0;
    --line-soft: #f1f5f9;
    --canvas: #f8f9fa;
    --card: #ffffff;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
        "Microsoft YaHei", sans-serif;
    --max-w: 75rem;
    --radius: 1rem;
    --radius-sm: 0.625rem;
    --shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
    --shadow-hover: 0 10px 28px rgba(15, 23, 42, 0.1);
    --gradient-brand: linear-gradient(93deg, #007fff 12%, #1f61ff 31%, #4f46e5 58%, #2563eb 95%);
    --gradient-cta: linear-gradient(93deg, #2563eb 0%, #4f46e5 52%, #7c3aed 100%);
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font);
    font-size: 1rem;
    line-height: 1.65;
    color: var(--ink);
    background: #fff;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--cta);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

img,
svg {
    max-width: 100%;
    height: auto;
}

/* —— 顶栏 —— */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
}

.site-header__inner {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 1.5rem;
    min-height: 4rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.site-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: inherit;
}

.site-brand:hover {
    text-decoration: none;
}

.site-brand__glyph,
.site-brand__logo {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.625rem;
    flex-shrink: 0;
    object-fit: cover;
}

.site-brand__glyph {
    background: linear-gradient(135deg, var(--cta), #3b82f6);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1rem;
}

.site-brand__text {
    display: flex;
    flex-direction: column;
    line-height: 1.25;
}

.site-brand__title {
    font-weight: 700;
    font-size: 1.0625rem;
}

.site-brand__sub {
    font-size: 0.75rem;
    color: var(--muted);
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 1.75rem;
}

.site-nav a {
    color: var(--muted);
    font-size: 0.9375rem;
    font-weight: 500;
    text-decoration: none;
}

.site-nav a:hover,
.site-nav a.is-active {
    color: var(--cta);
}

.site-nav__cta {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1.125rem;
    background: var(--cta);
    color: #fff !important;
    border-radius: 0.5rem;
    font-weight: 600;
    text-decoration: none !important;
    transition: background 0.15s;
}

.site-nav__cta:hover {
    background: var(--cta-hover);
}

/* —— 通用区块 —— */
.section {
    padding: 4.5rem 1.5rem;
}

.section--alt {
    background: var(--canvas);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.section--soft {
    background: var(--canvas);
}

.section__inner {
    max-width: var(--max-w);
    margin: 0 auto;
}

.section__eyebrow {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--cta);
    margin-bottom: 0.75rem;
}

.section__title {
    margin: 0 0 1rem;
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -0.02em;
}

.section__lead {
    margin: 0;
    max-width: 42rem;
    font-size: 1.0625rem;
    color: var(--muted);
}

/* —— Hero —— */
.hero {
    padding: 4rem 1.5rem 5rem;
    background: linear-gradient(165deg, #1e3a8a 0%, #2563eb 45%, #3b82f6 100%);
    color: #fff;
    overflow: hidden;
    position: relative;
}

.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 48px 48px;
    pointer-events: none;
}

.hero__inner {
    max-width: var(--max-w);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    position: relative;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 0.875rem;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 999px;
    font-size: 0.8125rem;
    margin-bottom: 1.25rem;
}

.hero__title {
    margin: 0 0 1.25rem;
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
}

.hero__desc {
    margin: 0 0 2rem;
    font-size: 1.125rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.88);
    max-width: 32rem;
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.hero__notice {
    margin: 1rem 0 0;
    font-size: 0.875rem;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.72);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none !important;
    transition: transform 0.12s, background 0.15s, box-shadow 0.15s;
    border: none;
    cursor: pointer;
}

.btn--primary {
    background: #fff;
    color: var(--cta);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
}

.btn--primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.btn--ghost {
    background: transparent;
    color: #fff;
    border: 1.5px solid rgba(255, 255, 255, 0.45);
}

.btn--ghost:hover {
    background: rgba(255, 255, 255, 0.1);
}

.hero__visual {
    display: flex;
    justify-content: center;
}

.hero-card {
    width: 100%;
    max-width: 28rem;
    background: rgba(255, 255, 255, 0.96);
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.2);
    color: var(--ink);
}

.hero-card__header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--line);
    font-size: 0.875rem;
    font-weight: 600;
}

.hero-card__demo-tag {
    margin-left: auto;
    padding: 0.125rem 0.5rem;
    border-radius: 999px;
    background: #f1f5f9;
    color: #64748b;
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.hero-card__dot {
    width: 0.625rem;
    height: 0.625rem;
    border-radius: 50%;
    background: #22c55e;
}

.hero-card__stat {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.hero-card__stat-item {
    text-align: center;
    padding: 0.75rem 0.5rem;
    background: var(--canvas);
    border-radius: 0.5rem;
}

.hero-card__stat-num {
    display: block;
    font-size: 1.375rem;
    font-weight: 800;
    color: var(--cta);
}

.hero-card__stat-label {
    font-size: 0.75rem;
    color: var(--muted);
}

.hero-card__issues {
    list-style: none;
    margin: 0;
    padding: 0;
}

.hero-card__issues li {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    padding: 0.5rem 0;
    font-size: 0.8125rem;
    border-bottom: 1px solid var(--line);
}

.hero-card__issues li:last-child {
    border-bottom: none;
}

.issue-tag {
    flex-shrink: 0;
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
    font-size: 0.6875rem;
    font-weight: 600;
}

.issue-tag--warn {
    background: #fef3c7;
    color: #b45309;
}

.issue-tag--ok {
    background: #dcfce7;
    color: #15803d;
}

/* —— 功能卡片（4 项 · 2×2） —— */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
    margin-top: 2.5rem;
}

.feature-card {
    background: var(--card);
    border: 1px solid var(--line-soft);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 10.5rem;
}

.feature-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.feature-card__icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.625rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.875rem;
    background: var(--cta-light);
    color: var(--cta);
}

.feature-card__icon--blue {
    color: #2563eb;
    background: var(--cta-light);
}

.feature-card__icon--violet {
    color: #7c3aed;
    background: rgba(139, 92, 246, 0.12);
}

.feature-card h3,
.feature-card h2 {
    margin: 0 0 0.5rem;
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--ink-soft);
}

.feature-card p {
    margin: 0;
    font-size: 0.9375rem;
    color: var(--muted);
    flex: 1;
    line-height: 1.65;
}

/* —— 流程步骤 —— */
.steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
    margin-top: 2.5rem;
    counter-reset: step;
}

.step-card {
    position: relative;
    padding: 1.5rem 1.25rem;
    background: var(--canvas);
    border-radius: var(--radius);
    border: 1px solid var(--line);
}

.step-card::before {
    counter-increment: step;
    content: counter(step);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: var(--cta);
    color: #fff;
    font-weight: 700;
    font-size: 0.875rem;
    margin-bottom: 0.875rem;
}

.step-card h3,
.step-card h2 {
    margin: 0 0 0.375rem;
    font-size: 1rem;
    font-weight: 700;
}

.step-card p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--muted);
}

/* —— 场景列表 —— */
.scenario-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
    margin-top: 2.5rem;
}

.scenario-item {
    display: flex;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
}

.scenario-item__icon {
    flex-shrink: 0;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.5rem;
    background: var(--cta-light);
    color: var(--cta);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
}

.scenario-item h3,
.scenario-item h2 {
    margin: 0 0 0.25rem;
    font-size: 1rem;
    font-weight: 700;
}

.scenario-item__note {
    margin: 0.75rem 0 0;
    font-size: 0.8125rem;
    line-height: 1.6;
    color: var(--muted);
}

.scenario-item p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--muted);
}

/* —— 联系区 —— */
.contact-panel {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 2rem;
    padding: 2rem;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.contact-panel dl {
    margin: 0;
    display: grid;
    gap: 1rem;
}

.contact-panel dt {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--muted);
    margin-bottom: 0.125rem;
}

.contact-panel dd {
    margin: 0;
    font-size: 0.9375rem;
}

/* —— 页脚 —— */
.site-footer {
    background: #0f172a;
    color: #94a3b8;
    padding: 3rem 1.5rem 2rem;
}

.site-footer__inner {
    max-width: var(--max-w);
    margin: 0 auto;
}

.site-footer__top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.site-footer__brand {
    color: #f1f5f9;
    font-weight: 700;
    font-size: 1.0625rem;
    margin-bottom: 0.75rem;
}

.site-footer__desc {
    margin: 0;
    font-size: 0.875rem;
    line-height: 1.7;
    max-width: 24rem;
}

.site-footer h4 {
    margin: 0 0 1rem;
    color: #e2e8f0;
    font-size: 0.875rem;
    font-weight: 600;
}

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

.site-footer li {
    margin-bottom: 0.5rem;
}

.site-footer a {
    color: #94a3b8;
    font-size: 0.875rem;
    text-decoration: none;
}

.site-footer a:hover {
    color: #e2e8f0;
}

.site-footer__bottom {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding-top: 1.5rem;
    font-size: 0.8125rem;
}

.site-footer__beian,
.site-footer__icp {
    display: inline-flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem 0.75rem;
}

.site-footer__beian a,
.site-footer__icp a {
    color: #94a3b8;
}

.site-footer__beian-sep {
    color: #64748b;
}

.site-footer__psb {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.site-footer__psb img {
    flex-shrink: 0;
}

/* —— 子页面顶栏（浅色居中 · 参考现代 SaaS 落地页） —— */
.page-hero {
    position: relative;
    padding: 3.5rem 1.5rem 2.5rem;
    background: #fff;
    border-bottom: 1px solid var(--line);
    overflow: hidden;
    text-align: center;
}

.page-hero::before {
    content: "";
    position: absolute;
    top: 55%;
    left: 50%;
    width: min(48rem, 90vw);
    height: 18rem;
    transform: translate(-50%, -50%);
    background: radial-gradient(70% 55% at 50% 45%, rgba(56, 189, 248, 0.12) 0%, rgba(129, 140, 248, 0.08) 35%, rgba(192, 132, 252, 0.06) 55%, transparent 72%);
    pointer-events: none;
}

.page-hero .section__inner {
    position: relative;
    z-index: 1;
}

.page-hero .section__eyebrow {
    margin-bottom: 1rem;
}

.page-hero__title {
    margin: 0 auto 1rem;
    max-width: 40rem;
    font-size: clamp(1.875rem, 3.6vw, 2.75rem);
    font-weight: 800;
    line-height: 1.22;
    letter-spacing: -0.03em;
}

.page-hero__title-accent {
    display: block;
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.page-hero__title-plain {
    display: block;
    color: #0a0a0a;
}

.page-hero .section__lead {
    margin: 0 auto;
    max-width: 40rem;
    font-size: 1.0625rem;
    line-height: 1.75;
    color: var(--muted-2);
}

.page-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin: 2.5rem 0 0;
}

.page-cta--notice {
    display: block;
    text-align: center;
    margin-top: 2rem;
    margin-bottom: -0.5rem;
    font-size: 0.875rem;
    color: var(--muted);
}

.btn--dark.btn--primary {
    background: var(--gradient-cta);
    color: #fff;
    border: none;
    border-radius: 999px;
    padding: 0.75rem 1.75rem;
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.28);
}

.btn--dark.btn--primary:hover {
    filter: brightness(1.06);
    transform: translateY(-1px);
}

.btn--dark.btn--ghost {
    color: var(--cta);
    border: 2px solid var(--cta);
    border-radius: 999px;
    background: #fff;
}

/* —— 首页入口卡片 —— */
.home-teasers {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.25rem;
    margin-top: 2rem;
}

.home-teaser {
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    color: inherit;
    text-decoration: none;
    transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}

.home-teaser:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(15, 39, 68, 0.1);
    border-color: #bfdbfe;
    text-decoration: none;
}

.home-teaser h3 {
    margin: 0 0 0.5rem;
    font-size: 1.0625rem;
    font-weight: 700;
}

.home-teaser p {
    margin: 0;
    flex: 1;
    font-size: 0.9375rem;
    color: var(--muted);
    line-height: 1.6;
}

.home-teaser__link {
    margin-top: 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--cta);
}

/* —— 响应式（保持 PC 可读，移动端不崩） —— */
@media (max-width: 960px) {
    .hero__inner {
        grid-template-columns: 1fr;
    }

    .hero__visual {
        order: -1;
    }

    .feature-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 1.25rem;
    }

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

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

    .contact-panel {
        grid-template-columns: 1fr;
    }

    .home-teasers {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .site-nav {
        display: none;
    }

    .feature-grid,
    .steps,
    .scenario-grid {
        grid-template-columns: 1fr;
    }
}

/* —— 数据条 —— */
.stats-band {
    background: #fff;
    border-top: 1px solid #e5e7eb;
    border-bottom: 1px solid #e5e7eb;
}

.stats-band__inner {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 2.25rem 1.5rem;
}

.stats-band__grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-start;
    gap: 2rem 3rem;
    text-align: center;
}

.stats-band__item {
    flex: 1;
    min-width: 8rem;
}

.stats-band__num {
    display: block;
    font-size: 1.875rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--ink-soft);
}

.stats-band__label {
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: #6b7280;
}

/* —— 区块引言（居中） —— */
.section-intro {
    text-align: center;
    max-width: 42rem;
    margin: 0 auto 2.25rem;
}

.section-intro .section__eyebrow {
    margin-bottom: 0.75rem;
}

.section-intro .section__title {
    margin-bottom: 0.875rem;
    font-size: clamp(1.625rem, 3vw, 2.125rem);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.section-intro__sub {
    margin: 0;
    font-size: 1rem;
    line-height: 1.7;
    color: var(--muted-2);
}

/* —— 彩色图标底 —— */
.icon-box {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.625rem;
    flex-shrink: 0;
    font-size: 1.125rem;
}

.icon-box--blue {
    color: #4f46e5;
    background: rgba(99, 102, 241, 0.12);
}

.icon-box--green {
    color: #16a34a;
    background: rgba(34, 197, 94, 0.12);
}

.icon-box--violet {
    color: #7c3aed;
    background: rgba(139, 92, 246, 0.12);
}

.icon-box--orange {
    color: #ea580c;
    background: rgba(249, 115, 22, 0.12);
}

/* —— 产品功能：双层能力卡片 —— */
.capability-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
}

.capability-card {
    display: flex;
    flex-direction: column;
    background: var(--card);
    border: 1px solid var(--line-soft);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
}

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

.capability-card--accent {
    border-color: #e0e7ff;
    box-shadow: var(--shadow), 0 0 0 1px rgba(99, 102, 241, 0.06);
}

.capability-card__head {
    display: flex;
    align-items: flex-start;
    gap: 0.875rem;
    margin-bottom: 0.875rem;
}

.capability-card__head h2 {
    margin: 0 0 0.375rem;
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--ink-soft);
}

.capability-card__head p {
    margin: 0;
    font-size: 0.875rem;
    line-height: 1.65;
    color: var(--muted);
}

.capability-panels {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.875rem;
    margin-top: 0.5rem;
}

.capability-panel {
    background: #fafbfc;
    border: 1px solid var(--line-soft);
    border-radius: var(--radius-sm);
    padding: 1rem 1.125rem;
}

.capability-panel h3 {
    margin: 0 0 0.625rem;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--cta);
}

.capability-panel ul {
    margin: 0;
    padding-left: 1rem;
    font-size: 0.8125rem;
    line-height: 1.65;
    color: var(--muted);
}

.capability-panel li + li {
    margin-top: 0.25rem;
}

/* —— 产品功能：能力分栏（旧版兼容） —— */
.ability-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--line);
}

.ability-columns h3 {
    margin: 0 0 0.625rem;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    color: var(--cta);
}

.ability-columns ul {
    margin: 0;
    padding-left: 1.125rem;
    font-size: 0.875rem;
    color: var(--muted);
    line-height: 1.65;
}

.ability-columns li + li {
    margin-top: 0.375rem;
}

.feature-grid--spaced {
    margin-top: 2.5rem;
}

/* —— 常见问题 —— */
.faq-block {
    margin-bottom: 3.5rem;
}

.faq-block:last-of-type {
    margin-bottom: 0;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.faq-item {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 0.875rem;
    padding: 1.125rem 1.25rem 1rem;
    box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
}

.faq-item__q {
    display: flex;
    align-items: flex-start;
    gap: 0.625rem;
    margin-bottom: 0.625rem;
}

.faq-item__mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 1.625rem;
    height: 1.625rem;
    border-radius: 0.5rem;
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: #fff;
    font-size: 0.8125rem;
    font-weight: 800;
}

.faq-item__q h3 {
    margin: 0;
    font-size: 0.9375rem;
    font-weight: 700;
    line-height: 1.45;
    color: #1e293b;
}

.faq-item__a {
    padding-left: 2.25rem;
    font-size: 0.875rem;
    line-height: 1.7;
    color: var(--muted);
}

.faq-item__a p,
.faq-item__a ul {
    margin: 0 0 0.625rem;
}

.faq-item__a p:last-child,
.faq-item__a ul:last-child {
    margin-bottom: 0;
}

.faq-item__a ul {
    padding-left: 1.125rem;
}

.faq-item__a code {
    font-size: 0.875em;
    background: var(--canvas);
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
}

.faq-item__note {
    margin: 0.625rem 0 0 !important;
    padding: 0.5rem 0.75rem;
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: 0.5rem;
    font-size: 0.8125rem !important;
    color: #166534;
}

/* 旧 faq-card 兼容 */
.faq-card {
    padding: 1.25rem 1.5rem;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.faq-card h3 {
    margin: 0 0 0.75rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--line);
    font-size: 1rem;
    font-weight: 700;
    color: var(--ink);
    line-height: 1.4;
}

.faq-card__content {
    font-size: 0.9375rem;
    color: var(--muted);
    line-height: 1.7;
}

.faq-card__content p,
.faq-card__content ul {
    margin: 0 0 0.75rem;
}

.faq-card__content p:last-child,
.faq-card__content ul:last-child {
    margin-bottom: 0;
}

.faq-card__content ul {
    padding-left: 1.25rem;
}

.faq-card__content code {
    font-size: 0.875em;
    background: var(--canvas);
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
}

.faq-card__note {
    margin: 0.75rem 0 0 !important;
    padding: 0.625rem 0.875rem;
    background: var(--canvas);
    border-radius: 0.5rem;
    font-size: 0.8125rem !important;
    line-height: 1.55;
    color: var(--muted);
}

/* —— 场景三分块 —— */
.scenario-grid--stack {
    grid-template-columns: 1fr;
}

/* —— GEO：关于 / 定价 —— */
.about-content h2 {
    margin: 2rem 0 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
}

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

.about-content p,
.about-content ul {
    margin: 0 0 1rem;
    font-size: 0.9375rem;
    color: var(--muted);
    line-height: 1.7;
}

.about-content table.help-table {
    width: 100%;
    margin: 0 0 1.25rem;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.about-content table.help-table th,
.about-content table.help-table td {
    border: 1px solid var(--line);
    padding: 0.625rem 0.75rem;
    text-align: left;
    vertical-align: top;
}

.about-content table.help-table th {
    background: var(--line-soft);
    color: var(--ink);
    font-weight: 600;
}

.scenario-item__links {
    margin-top: 0.75rem;
    font-size: 0.875rem;
}

.scenario-item__links a {
    color: var(--cta);
    text-decoration: none;
}

.scenario-item__links a:hover {
    text-decoration: underline;
}

.about-contact {
    list-style: none;
    padding: 0;
}

.about-contact li {
    margin-bottom: 0.5rem;
}

.about-placeholder {
    padding: 0.75rem 1rem;
    background: #fef3c7;
    border-radius: 0.5rem;
    color: #92400e;
    font-size: 0.875rem;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
    margin-top: 1rem;
}

.pricing-card {
    display: flex;
    flex-direction: column;
    padding: 1.75rem;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.pricing-card--featured {
    border-color: #bfdbfe;
    box-shadow: 0 12px 32px rgba(37, 99, 235, 0.12);
}

.pricing-card h2 {
    margin: 0 0 0.5rem;
    font-size: 1.125rem;
    font-weight: 700;
}

.pricing-card__price {
    margin: 0 0 1rem;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--cta);
}

.pricing-card ul {
    flex: 1;
    margin: 0 0 1.25rem;
    padding-left: 1.25rem;
    font-size: 0.875rem;
    color: var(--muted);
    line-height: 1.7;
}

.pricing-note {
    margin: 2rem 0 0;
    padding: 1rem 1.25rem;
    background: var(--canvas);
    border-radius: 0.5rem;
    font-size: 0.875rem;
    color: var(--muted);
    line-height: 1.6;
    text-align: center;
}

@media (max-width: 960px) {
    .ability-columns,
    .capability-panels,
    .capability-grid,
    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .stats-band__grid {
        justify-content: center;
        gap: 2rem 3.5rem;
    }

    .stats-band__item {
        flex: 0 0 calc(50% - 1.75rem);
    }
}