/* =============================================================================
   楚雄智科落地页 — 纯 CSS, 零外部依赖
   配色: 白色为主, CK 渐变 (红→黄→绿) 作为强调色
   设计原则:
   - 系统字体栈 (macOS/Windows/Linux 都有 fallback)
   - 拒 emoji / 拒 AI 套路图标 / 拒过度圆角阴影
   - 多页架构: 共享 nav + 三个独立页面
   ============================================================================= */

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

:root {
    /* 主色板 - 白为主 */
    --color-bg: #ffffff;
    --color-bg-soft: #fafafa;
    --color-text: #1a1a1a;
    --color-text-mid: #555555;
    --color-text-soft: #888888;
    --color-border: #ececec;
    --color-border-strong: #d4d4d4;

    /* CK logo 渐变三色 */
    --color-coral: #f45d5d;
    --color-amber: #f8d558;
    --color-mint:  #7be0ad;
    --color-mint-deep: #2da678;

    /* 间距 */
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 32px;
    --space-lg: 64px;
    --space-xl: 96px;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
                 "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    font-weight: 400;
}

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

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 32px;
}

.container-narrow {
    max-width: 880px;
    margin: 0 auto;
    padding: 0 32px;
}

/* ---------- Top Nav (三页共享) ---------- */
.nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--color-border);
}

.nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 16px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
}

.nav-brand img {
    width: 32px;
    height: 32px;
    display: block;
}

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    color: var(--color-text-mid);
    font-size: 0.9375rem;
    font-weight: 500;
    transition: color 0.15s ease;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-text);
}

.nav-links a.active {
    border-bottom: 2px solid var(--color-mint-deep);
    padding-bottom: 4px;
}

/* ---------- Hero ---------- */
.hero {
    padding: 64px 0 72px;
    border-bottom: 1px solid var(--color-border);
    text-align: center;
}

.hero .brand {
    display: inline-flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 32px;
}

.hero .brand img {
    width: 56px;
    height: 56px;
    display: block;
}

.hero .brand h1 {
    font-size: 2rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.hero h2 {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 24px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    color: var(--color-text);
}

.hero p.tagline {
    font-size: 1.125rem;
    color: var(--color-text-mid);
    max-width: 640px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--color-text);
    color: #ffffff;
    padding: 14px 28px;
    border-radius: 6px;
    font-weight: 500;
    font-size: 1rem;
    transition: background 0.15s ease;
}

.cta:hover {
    background: var(--color-mint-deep);
}

.cta-arrow {
    display: inline-block;
    transition: transform 0.15s ease;
}

.cta:hover .cta-arrow {
    transform: translateX(2px);
}

/* ---------- Data Strip (首页) ---------- */
.data-strip {
    padding: 56px 0;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg-soft);
}

.data-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
}

.data-item .data-number {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.1;
    background: linear-gradient(90deg, var(--color-coral), var(--color-amber), var(--color-mint));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.data-item .data-label {
    font-size: 0.875rem;
    color: var(--color-text-mid);
    font-weight: 500;
}

/* ---------- Section ---------- */
.section {
    padding: 80px 0;
    border-bottom: 1px solid var(--color-border);
}

.section:last-of-type {
    border-bottom: none;
}

.section-label {
    font-size: 0.8125rem;
    color: var(--color-text-soft);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 16px;
    font-weight: 500;
}

.section-title {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.3;
}

.section-subtitle {
    color: var(--color-text-mid);
    font-size: 1.0625rem;
    max-width: 640px;
    margin-bottom: 48px;
    line-height: 1.7;
}

/* ---------- Industry Grid (行业方案) ---------- */
.industry-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.industry-card {
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 24px 22px;
    transition: border-color 0.15s ease, transform 0.15s ease;
    background: var(--color-bg);
}

.industry-card:hover {
    border-color: var(--color-mint);
    transform: translateY(-2px);
}

.industry-card .industry-name {
    font-size: 1.0625rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-text);
}

.industry-card .industry-desc {
    font-size: 0.875rem;
    color: var(--color-text-mid);
    line-height: 1.6;
}

/* ---------- Provider Wall (渠道 logo 墙) ---------- */
.provider-wall {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.provider-card {
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 32px 24px;
    text-align: center;
    background: var(--color-bg);
    transition: border-color 0.15s ease, transform 0.15s ease;
}

.provider-card:hover {
    border-color: var(--color-mint);
    transform: translateY(-2px);
}

.provider-card img {
    height: 36px;
    margin: 0 auto 16px;
    display: block;
}

.provider-card .provider-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 6px;
}

.provider-card .provider-desc {
    font-size: 0.8125rem;
    color: var(--color-text-mid);
    line-height: 1.5;
}

/* ---------- Contact CTA ---------- */
.contact {
    padding: 80px 0;
    border-top: 1px solid var(--color-border);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 48px;
    align-items: center;
}

.contact-text .section-label {
    margin-bottom: 16px;
}

.contact-text h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text);
}

.contact-text p {
    color: var(--color-text-mid);
    font-size: 1rem;
    margin-bottom: 8px;
}

.contact-fallback {
    color: var(--color-text-soft);
    font-size: 0.875rem;
}

.contact-fallback a {
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border);
}

.contact-fallback a:hover {
    border-color: var(--color-mint-deep);
}

.qr-wrapper {
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 16px;
}

.qr-wrapper img {
    display: block;
    width: 160px;
    height: 160px;
    border-radius: 4px;
}

.qr-caption {
    text-align: center;
    font-size: 0.8125rem;
    color: var(--color-text-soft);
    margin-top: 12px;
}

/* ---------- About Page ---------- */
.page-header {
    padding: 56px 0 48px;
    border-bottom: 1px solid var(--color-border);
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.3;
}

.page-header p {
    font-size: 1.125rem;
    color: var(--color-text-mid);
    max-width: 640px;
    margin: 0 auto;
    line-height: 1.7;
}

.about-section {
    padding: 64px 0;
    border-bottom: 1px solid var(--color-border);
}

.about-section:last-of-type {
    border-bottom: none;
}

.about-section h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--color-text);
}

.about-section p {
    font-size: 1rem;
    color: var(--color-text-mid);
    line-height: 1.8;
    margin-bottom: 16px;
    max-width: 720px;
}

.about-section p:last-child {
    margin-bottom: 0;
}

.credentials {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 32px;
}

.credential-card {
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 24px;
    background: var(--color-bg-soft);
}

.credential-card .cred-label {
    font-size: 0.75rem;
    color: var(--color-text-soft);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-weight: 500;
    margin-bottom: 12px;
}

.credential-card .cred-value {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--color-text);
    line-height: 1.5;
    margin-bottom: 8px;
}

.credential-card .cred-status {
    font-size: 0.8125rem;
    color: var(--color-text-soft);
}

.credential-card .cred-status.pending {
    color: var(--color-coral);
}

/* ---------- Models Page ---------- */
.models-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.model-card {
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 32px;
    background: var(--color-bg);
    transition: border-color 0.15s ease, transform 0.15s ease;
}

.model-card:hover {
    border-color: var(--color-mint);
    transform: translateY(-2px);
}

.model-card .model-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--color-border);
}

.model-card .model-header img {
    height: 36px;
    display: block;
}

.model-card .model-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.2;
}

.model-card .model-header .model-subtitle {
    font-size: 0.875rem;
    color: var(--color-text-soft);
    margin-top: 2px;
}

.model-card .model-capability {
    font-size: 1rem;
    color: var(--color-text);
    font-weight: 500;
    margin-bottom: 12px;
    line-height: 1.5;
}

.model-card .model-detail {
    font-size: 0.875rem;
    color: var(--color-text-mid);
    line-height: 1.6;
}

/* ---------- Footer ---------- */
.footer {
    padding: 40px 0;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-soft);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 24px;
    margin-bottom: 24px;
}

.footer-info .footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.footer-info .footer-brand img {
    width: 24px;
    height: 24px;
}

.footer-info .footer-brand span {
    font-weight: 600;
    font-size: 1rem;
}

.footer-info p {
    font-size: 0.875rem;
    color: var(--color-text-soft);
    line-height: 1.6;
}

.footer-links {
    display: flex;
    gap: 28px;
    font-size: 0.9375rem;
}

.footer-links a {
    color: var(--color-text-soft);
    transition: color 0.15s ease;
}

.footer-links a:hover {
    color: var(--color-text);
}

.footer-meta {
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
    font-size: 0.8125rem;
    color: var(--color-text-soft);
    text-align: center;
    line-height: 1.8;
}

.footer-meta a {
    color: var(--color-text-soft);
}

.footer-meta a:hover {
    color: var(--color-text);
}

/* ---------- Mobile ---------- */
@media (max-width: 960px) {
    .industry-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .provider-wall {
        grid-template-columns: repeat(2, 1fr);
    }
    .data-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px 24px;
    }
    .credentials {
        grid-template-columns: 1fr;
    }
    .models-grid {
        grid-template-columns: 1fr;
    }
    .hero h2 {
        font-size: 1.875rem;
    }
    .contact-content {
        grid-template-columns: 1fr;
        gap: 32px;
        text-align: center;
    }
    .footer-content {
        flex-direction: column;
    }
}

@media (max-width: 720px) {
    .container, .container-narrow {
        padding: 0 20px;
    }
    .nav-inner {
        padding: 12px 20px;
    }
    .nav-links {
        gap: 16px;
    }
    .nav-links a {
        font-size: 0.875rem;
    }
    .hero, .page-header {
        padding: 56px 0 48px;
    }
    .hero h2, .page-header h1 {
        font-size: 1.625rem;
    }
    .section, .about-section {
        padding: 48px 0;
    }
    .section-title {
        font-size: 1.5rem;
    }
    .data-item .data-number {
        font-size: 2.25rem;
    }
    .industry-grid,
    .provider-wall {
        grid-template-columns: 1fr;
    }
}

/* ---------- Hero-Dual (首页双业务) ---------- */
.hero-dual-section {
    padding: 0 0 64px;
    border-bottom: 1px solid var(--color-border);
}

.hero-dual {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.hero-dual__card {
    display: block;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 36px 32px;
    background: var(--color-bg);
    color: inherit;
    transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
    position: relative;
}

.hero-dual__card--primary {
    border-color: var(--color-mint);
    background: linear-gradient(135deg, #ffffff 0%, #f4faf7 100%);
}

.hero-dual__card--secondary {
    border-color: var(--color-border-strong);
}

.hero-dual__card--poc {
    border-color: var(--color-border-strong);
    background: linear-gradient(135deg, #ffffff 0%, #f5f7fa 100%);
}

.hero-dual__card:hover {
    border-color: var(--color-mint-deep);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(45, 166, 120, 0.08);
}

.hero-dual__badge {
    display: inline-block;
    font-size: 0.6875rem;
    letter-spacing: 0.08em;
    padding: 4px 10px;
    border-radius: 4px;
    margin-bottom: 16px;
    font-weight: 600;
}

.hero-dual__badge--main {
    background: var(--color-mint-deep);
    color: #ffffff;
}

.hero-dual__badge--mvp {
    background: var(--color-bg-soft);
    color: var(--color-text-mid);
    border: 1px solid var(--color-border-strong);
}

.hero-dual__badge--poc {
    background: var(--color-bg-soft);
    color: var(--color-text-mid);
    border: 1px dashed var(--color-border-strong);
}

.hero-dual__title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 12px;
    line-height: 1.3;
}

.hero-dual__desc {
    font-size: 0.9375rem;
    color: var(--color-text-mid);
    margin-bottom: 20px;
    line-height: 1.7;
}

.hero-dual__points {
    list-style: none;
    margin-bottom: 24px;
}

.hero-dual__points li {
    font-size: 0.875rem;
    color: var(--color-text);
    padding: 6px 0;
    padding-left: 20px;
    position: relative;
}

.hero-dual__points li::before {
    content: "·";
    color: var(--color-mint-deep);
    position: absolute;
    left: 6px;
    font-weight: 700;
    font-size: 1.25rem;
    line-height: 1;
}

.hero-dual__cta {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-mint-deep);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

/* ---------- CTA Band ---------- */
.cta-band {
    padding: 56px 0;
    background: var(--color-bg-soft);
    border-bottom: 1px solid var(--color-border);
}

.cta-band__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    flex-wrap: wrap;
}

.cta-band__text {
    flex: 1;
    min-width: 280px;
}

.cta-band__text .section-label {
    margin-bottom: 12px;
}

.cta-band__text h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--color-text);
}

.cta-band__text p {
    color: var(--color-text-mid);
    font-size: 0.9375rem;
}

/* ---------- Section Soft (业务 A 详情区) ---------- */
.section-soft {
    background: var(--color-bg-soft);
}

/* ---------- Product Grid (业务总览卡片) ---------- */
.product-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.product-card {
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 32px;
    background: var(--color-bg);
    transition: border-color 0.15s ease, transform 0.15s ease;
    display: flex;
    flex-direction: column;
}

.product-card--highlight {
    border-color: var(--color-mint);
    background: linear-gradient(135deg, #ffffff 0%, #f4faf7 100%);
}

.product-card--mvp {
    border-color: var(--color-border-strong);
    background: linear-gradient(135deg, #ffffff 0%, #f5f7fa 100%);
}

.product-card--placeholder {
    background: var(--color-bg-soft);
    opacity: 0.85;
}

.product-card:hover {
    border-color: var(--color-mint-deep);
    transform: translateY(-2px);
}

.product-card__badge {
    display: inline-block;
    align-self: flex-start;
    font-size: 0.6875rem;
    letter-spacing: 0.08em;
    padding: 4px 10px;
    border-radius: 4px;
    margin-bottom: 16px;
    font-weight: 600;
}

.product-card__badge--main {
    background: var(--color-mint-deep);
    color: #ffffff;
}

.product-card__badge--mvp {
    background: var(--color-bg);
    color: var(--color-text-mid);
    border: 1px solid var(--color-border-strong);
}

.product-card__badge--poc {
    background: var(--color-bg);
    color: var(--color-text-mid);
    border: 1px dashed var(--color-border-strong);
}

.product-card__badge--placeholder {
    background: transparent;
    color: var(--color-text-soft);
    border: 1px dashed var(--color-border-strong);
}

.product-card__title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 8px;
    line-height: 1.4;
}

.product-card__meta {
    font-size: 0.8125rem;
    color: var(--color-text-soft);
    margin-bottom: 16px;
    letter-spacing: 0.02em;
}

.product-card__desc {
    font-size: 0.9375rem;
    color: var(--color-text-mid);
    line-height: 1.7;
    margin-bottom: 20px;
}

.product-card__points {
    list-style: none;
    margin-bottom: 24px;
    flex-grow: 1;
}

.product-card__points li {
    font-size: 0.875rem;
    color: var(--color-text);
    padding: 4px 0;
    padding-left: 18px;
    position: relative;
    line-height: 1.6;
}

.product-card__points li::before {
    content: "·";
    color: var(--color-mint-deep);
    position: absolute;
    left: 4px;
    font-weight: 700;
    font-size: 1.25rem;
    line-height: 1;
}

.product-card__link {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-mint-deep);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: auto;
    transition: gap 0.15s ease;
}

.product-card__link:hover {
    gap: 10px;
}

.product-card__link--muted {
    color: var(--color-text-soft);
    cursor: default;
}

/* ---------- Flow (接入流程) ---------- */
.flow-section {
    margin-top: 64px;
    padding-top: 48px;
    border-top: 1px solid var(--color-border);
}

.flow-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--color-text);
}

.flow-steps {
    list-style: none;
    counter-reset: flow-counter;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
}

.flow-steps li {
    counter-increment: flow-counter;
    padding: 24px 16px 20px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    position: relative;
    font-size: 0.875rem;
    color: var(--color-text-mid);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.flow-steps li::before {
    content: counter(flow-counter);
    position: absolute;
    top: -12px;
    left: 16px;
    background: var(--color-mint-deep);
    color: #ffffff;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
}

.flow-steps li strong {
    display: block;
    color: var(--color-text);
    font-size: 0.9375rem;
    margin-bottom: 4px;
    margin-top: 8px;
}

/* ---------- Mobile: Hero-Dual + Product-Grid + Flow ---------- */
@media (max-width: 960px) {
    .hero-dual {
        grid-template-columns: 1fr;
    }
    .product-grid {
        grid-template-columns: 1fr;
    }
    .flow-steps {
        grid-template-columns: repeat(2, 1fr);
    }
    .cta-band__inner {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 720px) {
    .hero-dual__card,
    .product-card {
        padding: 24px 20px;
    }
    .flow-steps {
        grid-template-columns: 1fr;
    }
    .hero-dual__title {
        font-size: 1.25rem;
    }
}

/* ---------- Pain Grid (痛点卡片) ---------- */
.pain-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.pain-card {
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 28px;
    background: var(--color-bg);
    position: relative;
}

.pain-num {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--color-coral);
    margin-bottom: 12px;
    line-height: 1;
    letter-spacing: -0.02em;
}

.pain-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--color-text);
}

.pain-card p {
    font-size: 0.9375rem;
    color: var(--color-text-mid);
    line-height: 1.7;
}

/* ---------- SKU Grid (3 大 SKU 卡片) ---------- */
.sku-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.sku-card {
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 28px;
    background: var(--color-bg);
    display: flex;
    flex-direction: column;
    transition: border-color 0.15s ease, transform 0.15s ease;
}

.sku-card--featured {
    border-color: var(--color-mint);
    background: linear-gradient(135deg, #ffffff 0%, #f4faf7 100%);
}

.sku-card:hover {
    border-color: var(--color-mint-deep);
    transform: translateY(-2px);
}

.sku-card__badge {
    display: inline-block;
    align-self: flex-start;
    font-size: 0.6875rem;
    letter-spacing: 0.08em;
    padding: 4px 10px;
    border-radius: 4px;
    margin-bottom: 16px;
    font-weight: 600;
}

.sku-card__badge--potential {
    background: #fff4e6;
    color: #d97706;
    border: 1px solid #fed7aa;
}

.sku-card__badge--main {
    background: var(--color-mint-deep);
    color: #ffffff;
}

.sku-card__badge--optional {
    background: var(--color-bg-soft);
    color: var(--color-text-soft);
    border: 1px solid var(--color-border-strong);
}

.sku-card__header {
    display: flex;
    align-items: center;
    gap: 14px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 16px;
}

.sku-card__logo {
    height: 32px;
    display: block;
}

.sku-card__name {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 2px;
}

.sku-card__subtitle {
    font-size: 0.75rem;
    color: var(--color-text-soft);
}

.sku-card__stars {
    font-size: 0.875rem;
    color: var(--color-text-mid);
    margin-bottom: 16px;
}

.sku-card__stars strong {
    color: var(--color-text);
    font-weight: 700;
    margin-left: 4px;
}

.sku-card__features {
    list-style: none;
    margin-bottom: 20px;
    flex-grow: 1;
}

.sku-card__features li {
    font-size: 0.875rem;
    color: var(--color-text);
    padding: 5px 0;
    padding-left: 18px;
    position: relative;
    line-height: 1.6;
}

.sku-card__features li::before {
    content: "✓";
    color: var(--color-mint-deep);
    position: absolute;
    left: 0;
    font-weight: 700;
    font-size: 0.875rem;
}

.sku-card__meta {
    background: var(--color-bg-soft);
    border-radius: 6px;
    padding: 12px 14px;
    margin-bottom: 16px;
    font-size: 0.8125rem;
    color: var(--color-text-mid);
    line-height: 1.7;
}

.sku-card__meta strong {
    color: var(--color-text);
}

.sku-card__fit {
    font-size: 0.8125rem;
    color: var(--color-text-soft);
    line-height: 1.6;
    padding-top: 12px;
    border-top: 1px solid var(--color-border);
}

/* ---------- Compare Table (部署模式对比) ---------- */
.compare-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
    font-size: 0.9375rem;
}

.compare-table th,
.compare-table td {
    padding: 16px 20px;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.compare-table th {
    background: var(--color-bg-soft);
    font-weight: 600;
    color: var(--color-text);
    font-size: 0.9375rem;
}

.compare-table th.compare-table__featured {
    background: var(--color-mint-deep);
    color: #ffffff;
}

.compare-table tbody tr:last-child td {
    border-bottom: none;
}

.compare-table td {
    color: var(--color-text-mid);
    vertical-align: top;
}

.compare-table td:first-child {
    font-weight: 600;
    color: var(--color-text);
    background: var(--color-bg-soft);
    width: 26%;
}

/* ---------- Evidence Grid (真实部署证据) ---------- */
.evidence-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.evidence-card {
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 24px;
    background: var(--color-bg);
}

.evidence-card h3 {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
}

.evidence-card ul {
    list-style: none;
}

.evidence-card li {
    font-size: 0.875rem;
    color: var(--color-text-mid);
    padding: 6px 0;
    line-height: 1.6;
}

.evidence-card li strong {
    color: var(--color-text);
    margin-right: 4px;
}

/* ---------- Pricing Grid (透明定价) ---------- */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.pricing-tier {
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 32px 28px;
    background: var(--color-bg);
    text-align: center;
}

.pricing-tier--featured {
    border-color: var(--color-mint);
    background: linear-gradient(135deg, #ffffff 0%, #f4faf7 100%);
}

.pricing-tier__sku {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 12px;
}

.pricing-tier__price {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(90deg, var(--color-coral), var(--color-amber), var(--color-mint));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    margin-bottom: 4px;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.pricing-tier__price small {
    font-size: 0.875rem;
    font-weight: 500;
    -webkit-text-fill-color: var(--color-text-soft);
    color: var(--color-text-soft);
    margin-left: 4px;
}

.pricing-tier__cycle {
    font-size: 0.8125rem;
    color: var(--color-text-soft);
    margin-bottom: 20px;
}

.pricing-tier ul {
    list-style: none;
    text-align: left;
    margin-bottom: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
}

.pricing-tier li {
    font-size: 0.875rem;
    color: var(--color-text-mid);
    padding: 4px 0;
    padding-left: 18px;
    position: relative;
    line-height: 1.6;
}

.pricing-tier li::before {
    content: "·";
    color: var(--color-mint-deep);
    position: absolute;
    left: 4px;
    font-weight: 700;
    font-size: 1.25rem;
    line-height: 1;
}

.pricing-tier__renew {
    font-size: 0.8125rem;
    color: var(--color-text-soft);
    padding-top: 12px;
    border-top: 1px solid var(--color-border);
}

.pricing-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
}

.pricing-detail__col h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 16px;
}

.pricing-detail__col ul {
    list-style: none;
}

.pricing-detail__col li {
    font-size: 0.875rem;
    color: var(--color-text-mid);
    padding: 4px 0;
    padding-left: 18px;
    position: relative;
    line-height: 1.6;
}

.pricing-detail__col li::before {
    content: "·";
    color: var(--color-mint-deep);
    position: absolute;
    left: 4px;
    font-weight: 700;
    font-size: 1.25rem;
    line-height: 1;
}

/* ---------- Timeline (路线图) ---------- */
.timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    position: relative;
}

.timeline__item {
    position: relative;
    padding: 24px 20px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
}

.timeline__item--done {
    border-color: var(--color-mint);
}

.timeline__item--active {
    border-color: var(--color-amber);
    background: linear-gradient(135deg, #fffef7 0%, #ffffff 100%);
}

.timeline__item--pending {
    opacity: 0.7;
}

.timeline__dot {
    position: absolute;
    top: -14px;
    left: 20px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--color-bg);
    border: 2px solid var(--color-border-strong);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--color-text-soft);
}

.timeline__item--done .timeline__dot {
    background: var(--color-mint-deep);
    border-color: var(--color-mint-deep);
    color: #ffffff;
}

.timeline__item--active .timeline__dot {
    background: var(--color-amber);
    border-color: var(--color-amber);
    color: #1a1a1a;
}

.timeline__phase {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text);
    margin-top: 8px;
    margin-bottom: 4px;
}

.timeline__date {
    font-size: 0.75rem;
    color: var(--color-text-soft);
    margin-bottom: 12px;
}

.timeline__desc {
    font-size: 0.8125rem;
    color: var(--color-text-mid);
    line-height: 1.6;
}

/* ---------- FAQ (常见问题) ---------- */
.faq-list {
    max-width: 800px;
}

.faq-item {
    border: 1px solid var(--color-border);
    border-radius: 8px;
    margin-bottom: 12px;
    background: var(--color-bg);
    transition: border-color 0.15s ease;
}

.faq-item[open] {
    border-color: var(--color-mint-deep);
}

.faq-item summary {
    padding: 18px 20px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

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

.faq-item summary::after {
    content: "+";
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--color-mint-deep);
    transition: transform 0.15s ease;
}

.faq-item[open] summary::after {
    content: "−";
}

.faq-item__body {
    padding: 0 20px 20px;
    border-top: 1px solid var(--color-border);
    margin-top: 0;
}

.faq-item__body p {
    font-size: 0.9375rem;
    color: var(--color-text-mid);
    line-height: 1.7;
    margin-top: 16px;
}

.faq-item__body ul {
    list-style: none;
    margin-top: 12px;
}

.faq-item__body li {
    font-size: 0.9375rem;
    color: var(--color-text-mid);
    padding: 4px 0;
    line-height: 1.7;
}

.faq-item__body li strong {
    color: var(--color-text);
}

/* ---------- Mobile: Phase 2 Components ---------- */
@media (max-width: 960px) {
    .pain-grid,
    .sku-grid,
    .evidence-grid,
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .timeline {
        grid-template-columns: repeat(2, 1fr);
    }
    .pricing-detail {
        grid-template-columns: 1fr;
    }
    .compare-table {
        font-size: 0.8125rem;
    }
    .compare-table th,
    .compare-table td {
        padding: 12px 10px;
    }
}

@media (max-width: 720px) {
    .pain-grid,
    .sku-grid,
    .evidence-grid,
    .pricing-grid,
    .timeline {
        grid-template-columns: 1fr;
    }
    .sku-card,
    .evidence-card,
    .pricing-tier {
        padding: 20px 18px;
    }
    .pain-card {
        padding: 20px;
    }
    .compare-table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }
}

/* ---------- Contact Page ---------- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.contact-card {
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 32px;
    background: var(--color-bg);
    display: flex;
    flex-direction: column;
}

.contact-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 12px;
}

.contact-card p {
    font-size: 0.9375rem;
    color: var(--color-text-mid);
    line-height: 1.7;
    margin-bottom: 12px;
}

.contact-card__qr {
    margin-top: 16px;
}

.contact-card__list {
    list-style: none;
    margin-top: 12px;
}

.contact-card__list li {
    font-size: 0.9375rem;
    color: var(--color-text-mid);
    padding: 6px 0;
}

.contact-card__list li strong {
    color: var(--color-text);
    margin-right: 8px;
}

.contact-card__list a {
    color: var(--color-mint-deep);
    border-bottom: 1px solid transparent;
    transition: border-color 0.15s ease;
}

.contact-card__list a:hover {
    border-bottom-color: var(--color-mint-deep);
}

.contact-card__note {
    font-size: 0.8125rem !important;
    color: var(--color-text-soft) !important;
    margin-top: 8px;
}

/* ---------- Biz Flow Grid (业务咨询分流) ---------- */
.biz-flow-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.biz-flow-card {
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 28px;
    background: var(--color-bg);
}

.biz-flow-card__tag {
    display: inline-block;
    font-size: 0.6875rem;
    letter-spacing: 0.08em;
    padding: 4px 10px;
    border-radius: 4px;
    margin-bottom: 16px;
    font-weight: 600;
    background: var(--color-mint-deep);
    color: #ffffff;
}

.biz-flow-card h3 {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 12px;
    line-height: 1.4;
}

.biz-flow-card p {
    font-size: 0.875rem;
    color: var(--color-text-mid);
    line-height: 1.7;
    margin-bottom: 16px;
}

.biz-flow-card ul {
    list-style: none;
    border-top: 1px solid var(--color-border);
    padding-top: 16px;
}

.biz-flow-card li {
    font-size: 0.8125rem;
    color: var(--color-text-mid);
    padding: 4px 0;
    line-height: 1.6;
}

.biz-flow-card li strong {
    color: var(--color-text);
}

.biz-flow-card code {
    background: var(--color-bg-soft);
    padding: 2px 6px;
    border-radius: 3px;
    font-family: ui-monospace, "SF Mono", Menlo, monospace;
    font-size: 0.75rem;
    color: var(--color-mint-deep);
}

/* ---------- Region Grid (区域服务) ---------- */
.region-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.region-card {
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 24px;
    background: var(--color-bg-soft);
}

.region-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 8px;
}

.region-card p {
    font-size: 0.875rem;
    color: var(--color-text-mid);
    line-height: 1.6;
    margin-bottom: 16px;
}

.region-card ul {
    list-style: none;
}

.region-card li {
    font-size: 0.8125rem;
    color: var(--color-text-mid);
    padding: 3px 0;
    padding-left: 14px;
    position: relative;
}

.region-card li::before {
    content: "·";
    color: var(--color-mint-deep);
    position: absolute;
    left: 2px;
    font-weight: 700;
    font-size: 1.125rem;
    line-height: 1;
}

/* ---------- Mobile: Contact Page ---------- */
@media (max-width: 960px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }
    .biz-flow-grid,
    .region-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    .contact-card {
        padding: 24px 20px;
    }
}

/* ---------- QR Row (双二维码横排) ---------- */
.contact-card__qr-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 20px;
    margin-bottom: 16px;
}

.contact-card__qr-item {
    text-align: center;
}

.contact-card__qr-item .qr-wrapper {
    padding: 12px;
}

.contact-card__qr-item .qr-wrapper img {
    width: 100%;
    height: auto;
    max-width: 160px;
    margin: 0 auto;
    display: block;
}

.contact-card__qr-item .qr-caption {
    margin-top: 8px;
    font-size: 0.8125rem;
    color: var(--color-text-mid);
    font-weight: 500;
}

/* ---------- Model Header (单 logo 简化) ---------- */
.model-card .model-header {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--color-border);
}

.model-card .model-header img {
    height: 32px;
    display: block;
}

.model-card .model-header .model-subtitle {
    font-size: 0.8125rem;
    color: var(--color-text-mid);
    font-weight: 500;
    line-height: 1.5;
}

/* ---------- Industry Card (新版 3 列布局) ---------- */
.industry-card .industry-desc p {
    font-size: 0.875rem;
    color: var(--color-text-mid);
    line-height: 1.7;
    margin-bottom: 8px;
}

.industry-card .industry-desc p:last-child {
    margin-bottom: 0;
}

.industry-card .industry-desc strong {
    color: var(--color-mint-deep);
    font-weight: 600;
}

/* ---------- Mobile: QR Row 退化 ---------- */
@media (max-width: 720px) {
    .contact-card__qr-row {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .industry-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ---------- Flow Points (产品方案 - SLA 列表) ---------- */
.flow-points {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 12px;
}

.flow-points li {
    padding: 12px 16px 12px 36px;
    position: relative;
    background: var(--color-bg-soft);
    border-radius: 8px;
    color: var(--color-text-mid);
    line-height: 1.7;
}

.flow-points li::before {
    content: "✓";
    position: absolute;
    left: 14px;
    top: 14px;
    color: var(--color-mint-deep);
    font-weight: 700;
}

/* ---------- Biz Lineup (关于我们 - 三业务版图) ---------- */
.biz-lineup {
    display: grid;
    gap: 16px;
    margin-top: 24px;
}

.biz-lineup__item {
    border: 1px solid var(--color-border);
    border-radius: 10px;
    padding: 20px 24px;
    background: var(--color-bg);
}

.biz-lineup__tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-mint-deep);
    margin-bottom: 8px;
    letter-spacing: 0.02em;
}

.biz-lineup__name {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 6px;
}

.biz-lineup__desc {
    font-size: 0.875rem;
    color: var(--color-text-mid);
    line-height: 1.6;
}

/* ---------- PoC Grid (业务 C - 4 PoC 计划) ---------- */
.poc-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 24px;
}

.poc-card {
    border: 1px dashed var(--color-border-strong);
    border-radius: 12px;
    padding: 24px 24px;
    background: var(--color-bg-soft);
}

.poc-card__tag {
    display: inline-block;
    font-size: 0.6875rem;
    letter-spacing: 0.06em;
    padding: 3px 10px;
    border-radius: 4px;
    margin-bottom: 12px;
    font-weight: 600;
    background: var(--color-bg);
    color: var(--color-text-mid);
    border: 1px solid var(--color-border-strong);
}

.poc-card h3 {
    font-size: 1.0625rem;
    margin-bottom: 10px;
    color: var(--color-text);
}

.poc-card p {
    font-size: 0.875rem;
    color: var(--color-text-mid);
    margin-bottom: 12px;
}

.poc-card ul {
    list-style: none;
    padding: 0;
    margin: 0 0 12px 0;
    font-size: 0.875rem;
    color: var(--color-text-mid);
    line-height: 1.7;
}

.poc-card ul li {
    padding-left: 16px;
    position: relative;
}

.poc-card ul li::before {
    content: "·";
    position: absolute;
    left: 4px;
    color: var(--color-mint-deep);
    font-weight: 700;
}

.poc-card__meta {
    font-size: 0.8125rem;
    color: var(--color-text-light);
    padding-top: 12px;
    border-top: 1px solid var(--color-border);
}

/* ---------- Tier Summary (业务 C - 透明定价三档汇总) ---------- */
.tier-summary-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 24px;
}

.tier-summary {
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 24px;
    background: var(--color-bg);
    text-align: center;
}

.tier-summary__name {
    font-size: 0.9375rem;
    color: var(--color-text-mid);
    margin-bottom: 8px;
    font-weight: 500;
}

.tier-summary__range {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-mint-deep);
    margin-bottom: 12px;
}

.tier-summary__fit {
    font-size: 0.8125rem;
    color: var(--color-text-mid);
    line-height: 1.6;
}

/* ---------- Mobile: PoC + Tier Summary 退化 ---------- */
@media (max-width: 720px) {
    .poc-grid {
        grid-template-columns: 1fr;
    }
    .tier-summary-grid {
        grid-template-columns: 1fr;
    }
}