/* ===========================================
   about_us.css — About 页面专用样式
   视图：information/about/about_us.html

   布局令牌见 information.css :root
   滚动淡入：common/scroll_reveal.css（.about-reveal）

   Section 间距：section 之间 margin 为 0、紧贴；留白仅用 padding
=========================================== */

/* ── 主内容：section 全宽，内层 1200px ─────── */
body.page-about-fullscreen .info-page--marketing .lp-main--full {
    max-width: none;
    padding: 0;
}

body.page-about-fullscreen .info-page--marketing .lp-content--full {
    background: transparent;
    border: none !important;
    box-shadow: none !important;
    padding: 0;
}

body.page-about-fullscreen .info-page--marketing {
    min-height: auto;
}

/* information_article.css 的 section[id] padding-bottom 会叠加，营销页取消额外 bottom */
body.page-about-fullscreen .lp-content--full section[id] {
    margin: 0;
}

/* About 全页 section 统一上下留白（沿用 --lp-main-section-pad-y） */
.about-section {
    margin: 0;
    padding: var(--lp-main-section-pad-y) 0;
    scroll-margin-top: calc(var(--header-topbar-height) + var(--header-height-nav) + 24px);
}

body.page-about-fullscreen .lp-content--full .about-section {
    padding-top: var(--lp-main-section-pad-y);
    padding-bottom: var(--lp-main-section-pad-y);
}

.about-section--story {
    background: #fff;
}

.about-section--values {
    background: var(--color-bg, #f7f6f4);
    border-top: 1px solid var(--color-border, #e2e0dc);
}

.about-section--timeline {
    background: var(--color-surface, #fff);
    border-top: 1px solid var(--color-border, #e2e0dc);
}

.about-section--team {
    background: var(--color-bg, #f7f6f4);
    border-top: 1px solid var(--color-border, #e2e0dc);
}

/* Team 与其它 section 一样保留上下对称 padding（--lp-main-section-pad-y） */

/* Partnership CTA 独立于 lp-content，与上一 section / Footer 零间隙 */
.about-page-cta {
    margin: 0;
    padding: 0;
}

.about-page-cta .partnership-cta {
    margin: 0;
}

.about-section__inner {
    max-width: var(--lp-content-max, 1200px);
    margin: 0 auto;
    padding: 0 var(--lp-spacing-lg, 24px);
}

.about-section__inner--center {
    text-align: center;
}

/* ── 全屏 Hero（深紫蓝渐变 + 装饰圆 + 金色统计）── */
.page-about-fullscreen .lp-hero--fullscreen:not(.lp-hero--has-bg) {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: calc(100dvh - var(--lp-marketing-hero-offset));
    margin-bottom: 0;
    padding: var(--lp-spacing-2xl, 48px) var(--lp-spacing-lg, 24px) 96px;
    position: relative;
    overflow: hidden;
    background: linear-gradient(
        160deg,
        var(--color-primary, #333) 0%,
        #5f5b54 45%,
        var(--color-accent, #205058) 100%
    );
}

.page-about-fullscreen .lp-hero--fullscreen.lp-hero--has-bg .lp-hero__bg {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: calc(100dvh - var(--lp-marketing-hero-offset));
    margin-bottom: 0;
    padding: var(--lp-spacing-2xl, 48px) var(--lp-spacing-lg, 24px) 96px;
}

.page-about-fullscreen .lp-hero--fullscreen:not(.lp-hero--has-bg)::before {
    background: rgba(15, 23, 42, 0.15);
}

.page-about-fullscreen .lp-hero--fullscreen::after {
    content: '';
    position: absolute;
    width: min(520px, 70vw);
    height: min(520px, 70vw);
    top: -140px;
    right: -120px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    pointer-events: none;
    z-index: 2;
}

.page-about-fullscreen .lp-hero--fullscreen .lp-hero-content::before {
    content: '';
    position: absolute;
    width: min(360px, 50vw);
    height: min(360px, 50vw);
    bottom: -120px;
    left: -140px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    pointer-events: none;
    z-index: -1;
}

.page-about-fullscreen .lp-hero--fullscreen .lp-hero-icon {
    display: none;
}

.page-about-fullscreen .lp-hero--fullscreen .lp-hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    width: 100%;
    max-width: var(--lp-content-max, 1200px);
    margin: 0 auto;
    position: relative;
    z-index: 3;
    font-family: var(--lp-font, 'Roboto', sans-serif);
}

.page-about-fullscreen .lp-hero--fullscreen .lp-hero-title {
    font-family: var(--lp-font, 'Roboto', sans-serif);
    /* About Hero 需明显大于下方 section 标题（1.5rem），单独放大 */
    font-size: clamp(2.25rem, 4.5vw, 3.25rem);
    font-weight: 500;
    line-height: 1.2;
    margin-bottom: var(--lp-spacing-md, 16px);
    color: #fff;
    text-transform: none;
    letter-spacing: -0.01em;
}

.page-about-fullscreen .lp-hero--fullscreen .lp-hero-subtitle {
    max-width: 720px;
    margin-bottom: 0;
    font-family: var(--lp-font, 'Roboto', sans-serif);
    font-size: var(--lp-font-size-hero-sub, clamp(1rem, 1.6vw, 1.125rem));
    font-weight: 400;
    color: rgba(255, 255, 255, 0.9);
    line-height: var(--lp-line-height-body, 1.5);
}

/* Hero 统计 */
.about-hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--lp-spacing-xl, 32px);
    width: 100%;
    max-width: 720px;
    padding-top: var(--lp-spacing-2xl, 48px);
}

.about-hero-stat {
    text-align: center;
}

.about-hero-stat__value {
    display: block;
    font-size: clamp(2.5rem, 5vw, 3.75rem);
    font-weight: 800;
    line-height: 1;
    color: #fff;
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
    font-variant-numeric: tabular-nums;
}

.about-hero-stat__label {
    display: block;
    padding-top: var(--lp-spacing-sm, 8px);
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    line-height: 1.35;
    color: rgba(255, 255, 255, 0.82);
}

/* 向下滚动箭头（无圆圈边框） */
.about-hero-scroll {
    position: absolute;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.88);
    text-decoration: none;
    transition: color 0.2s ease;
}

.about-hero-scroll:hover {
    color: #fff;
}

.about-hero-scroll__chevron {
    display: flex;
    animation: about-hero-scroll-bounce 2s ease-in-out infinite;
}

.about-hero-scroll__chevron svg {
    width: 28px;
    height: 28px;
}

@keyframes about-hero-scroll-bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(6px); }
}

/* ── Section 间距见文件顶部 .about-section 统一规则 ── */

/* ── 通用文字 / Pill 标签 ─────────────────── */
.about-kicker {
    display: inline-block;
    margin: 0;
    padding: 7px 18px;
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #fff;
    background: linear-gradient(135deg, var(--color-accent, #205058) 0%, var(--color-accent-hover, #174248) 100%);
    border-radius: 999px;
    box-shadow: 0 4px 14px rgba(var(--color-accent-rgb), 0.35);
}

.about-heading {
    margin: 0;
    padding: var(--lp-spacing-sm, 8px) 0 var(--lp-spacing-md, 16px);
    font-family: var(--lp-font, 'Roboto', sans-serif);
    font-size: var(--lp-font-size-h2, 1.5rem);
    font-weight: var(--lp-font-weight-heading, 400);
    line-height: 1.333;
    color: var(--color-text, #1a2f34);
    letter-spacing: normal;
}

.about-lead {
    margin: 0 auto;
    padding: 0 0 var(--lp-spacing-lg, 24px);
    max-width: 640px;
    font-family: var(--lp-font, 'Roboto', sans-serif);
    font-size: var(--lp-font-size-body, 1rem);
    color: var(--lp-text-secondary, #5f6368);
    line-height: var(--lp-line-height-body, 1.5);
    font-weight: 400;
}

.about-copy {
    margin: 0;
    padding: 0 0 var(--lp-spacing-sm, 8px);
    font-family: var(--lp-font, 'Roboto', sans-serif);
    font-size: var(--lp-font-size-body, 1rem);
    color: var(--lp-text-secondary, #5f6368);
    line-height: var(--lp-line-height-body, 1.5);
    font-weight: 400;
}

.about-copy:last-child {
    padding-bottom: 0;
}

/* ── Overview 双栏 + 信任徽章白卡片 ─────────── */
.about-story-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(24px, 4vw, 48px);
    align-items: center;
    margin: 0;
    padding: 0;
}

.about-story-copy {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin: 0;
    padding: 0;
}

.about-trust-list {
    margin: 0;
    padding: var(--lp-spacing-lg, 24px) 0 0;
    list-style: none;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--lp-spacing-md, 16px);
}

.about-trust-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 148px;
    padding: var(--lp-spacing-xl, 32px) var(--lp-spacing-lg, 24px);
    background: #fff;
    border: 1px solid rgba(15, 23, 42, 0.06);
    border-radius: 14px;
    box-shadow: 0 4px 20px rgba(15, 23, 42, 0.08);
}

.about-trust-card__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    padding: 0 0 var(--lp-spacing-md, 16px);
    color: var(--lp-marketing-accent, #205058);
}

.about-trust-card__label {
    font-family: var(--lp-font, 'Roboto', sans-serif);
    font-size: var(--lp-font-size-body, 1rem);
    font-weight: var(--lp-font-weight-subhead, 500);
    color: var(--color-text, #1a2f34);
    line-height: 1.4;
}

.about-story-visual {
    margin: 0 auto;
    padding: 0;
    max-width: 420px;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.12);
}

.about-story-visual__img {
    display: block;
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
}

/* ── 区块标题（全页统一 · 对齐 trade-section-header 思路）── */
.about-section-header {
    margin: 0 auto;
    padding: 0 0 var(--lp-spacing-lg, 24px);
    max-width: 720px;
    text-align: center;
}

.about-section-header .about-kicker {
    display: inline-block;
    max-width: 100%;
}

.about-section-header .about-heading {
    padding-bottom: var(--lp-spacing-sm, 8px);
}

.about-section-header .about-lead {
    padding-bottom: 0;
}

.about-section-header--divider {
    padding-bottom: var(--lp-spacing-xl, 32px);
    border-bottom: 1px solid var(--color-border, #e2e0dc);
}

@media (min-width: 993px) {
    .about-section-header--left-desktop {
        margin-left: 0;
        margin-right: 0;
        max-width: none;
        text-align: left;
    }
}

/* ── Our Values：3 列 + 第 4 张左下，内容居中 ── */
.about-value-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--lp-spacing-lg, 24px);
    margin: 0;
    text-align: center;
}

.about-value-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 220px;
    padding: clamp(28px, 4vw, 36px) var(--lp-spacing-lg, 24px);
    background: #fff;
    border: 1px solid rgba(15, 23, 42, 0.06);
    border-radius: 14px;
    box-shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
    transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.about-value-card:nth-child(4) {
    grid-column: 1 / 2;
}

.about-value-card:hover {
    box-shadow: 0 12px 36px rgba(15, 23, 42, 0.12);
    transform: translateY(-4px);
}

.about-value-card__icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--lp-spacing-md, 16px);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent, #205058) 0%, var(--color-accent-hover, #174248) 100%);
    color: #fff;
    box-shadow: 0 8px 20px rgba(var(--color-accent-rgb), 0.35);
}

.about-value-card h3 {
    margin: 0 0 var(--lp-spacing-sm, 8px);
    font-family: var(--lp-font, 'Roboto', sans-serif);
    font-size: var(--lp-font-size-h3, 1.25rem);
    font-weight: var(--lp-font-weight-subhead, 500);
    line-height: 1.4;
    color: var(--color-text, #1a2f34);
}

.about-value-card p {
    margin: 0;
    max-width: 280px;
    font-family: var(--lp-font, 'Roboto', sans-serif);
    font-size: var(--lp-font-size-body, 1rem);
    line-height: var(--lp-line-height-body, 1.5);
    color: var(--lp-text-secondary, #5f6368);
}

/* ── 交替时间线 ───────────────────────────── */
.about-timeline-alt {
    position: relative;
    max-width: 920px;
    margin: 0 auto;
    padding: var(--lp-spacing-xl, 32px) 0 0;
}

.about-timeline-alt::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 2px;
    background: var(--color-border, #e2e0dc);
    transform: translateX(-50%);
}

.about-timeline-alt__item {
    position: relative;
    width: 50%;
    padding: 0 var(--lp-spacing-lg, 24px) var(--lp-spacing-xl, 32px);
}

.about-timeline-alt__item--left {
    margin-right: auto;
    padding-right: var(--lp-spacing-xl, 32px);
    text-align: right;
}

.about-timeline-alt__item--right {
    margin-left: auto;
    padding-left: var(--lp-spacing-xl, 32px);
    text-align: left;
}

.about-timeline-alt__item::after {
    content: '';
    position: absolute;
    top: 28px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--lp-marketing-accent, #205058);
    border: 3px solid #fff;
    box-shadow: 0 0 0 2px var(--lp-marketing-accent, #205058);
}

.about-timeline-alt__item--left::after {
    right: -8px;
}

.about-timeline-alt__item--right::after {
    left: -8px;
}

.about-timeline-alt__card {
    padding: var(--lp-spacing-lg, 24px);
    background: #fff;
    border: 1px solid var(--lp-border-light, #e8eaed);
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(15, 23, 42, 0.08);
    text-align: left;
}

.about-timeline-alt__year {
    display: inline-block;
    margin-bottom: 8px;
    padding: 5px 14px;
    font-size: 0.75rem;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, var(--color-accent, #205058) 0%, var(--color-accent-hover, #174248) 100%);
    border-radius: 999px;
}

.about-timeline-alt__card h3 {
    margin: 0 0 6px;
    font-family: var(--lp-font, 'Roboto', sans-serif);
    font-size: var(--lp-font-size-h3, 1.25rem);
    font-weight: var(--lp-font-weight-subhead, 500);
    line-height: 1.4;
    color: var(--color-text, #1a2f34);
}

.about-timeline-alt__card p {
    margin: 0;
    font-family: var(--lp-font, 'Roboto', sans-serif);
    font-size: var(--lp-font-size-body, 1rem);
    line-height: var(--lp-line-height-body, 1.5);
    color: var(--lp-text-secondary, #5f6368);
}

/* ── 团队（照片主导 · 杂志双栏 · 占位可换真图）── */
.about-team-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(1.5rem, 4vw, 2.5rem);
    margin: 0;
    max-width: 52rem;
    margin-inline: auto;
    text-align: left;
}

.about-team-card {
    display: flex;
    flex-direction: column;
    margin: 0;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: 0;
    box-shadow: none;
    overflow: hidden;
}

.about-team-card__media {
    position: relative;
    margin: 0 0 1.25rem;
    aspect-ratio: 4 / 5;
    overflow: hidden;
    background: linear-gradient(160deg, #e8e4dc 0%, #d4cfc4 100%);
}

.about-team-card__photo {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 20%;
    transition: transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

@media (hover: hover) and (pointer: fine) {
    .about-team-card:hover .about-team-card__photo {
        transform: scale(1.03);
    }
}

.about-team-card__fallback {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    font-family: var(--lp-font-display, Georgia, 'Times New Roman', serif);
    font-size: 3rem;
    font-weight: 400;
    color: var(--color-accent, #205058);
    background: rgba(var(--color-accent-rgb), 0.1);
}

.about-team-card__placeholder {
    position: absolute;
    top: 0.75rem;
    left: 0.75rem;
    z-index: 1;
    margin: 0;
    padding: 0.2rem 0.55rem;
    font-family: var(--lp-font, 'Roboto', sans-serif);
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #fff;
    background: rgba(26, 47, 52, 0.55);
    backdrop-filter: blur(4px);
}

.about-team-card__body {
    padding: 0 0.15rem;
}

.about-team-card__role {
    margin: 0 0 0.35rem;
    font-family: var(--lp-font, 'Roboto', sans-serif);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-accent, #205058);
}

.about-team-card__name {
    margin: 0 0 0.65rem;
    font-family: var(--lp-font-display, Georgia, 'Times New Roman', serif);
    font-size: clamp(1.25rem, 2.4vw, 1.5rem);
    font-weight: 400;
    letter-spacing: -0.02em;
    line-height: 1.25;
    color: var(--color-text, #1a2f34);
}

.about-team-card__bio {
    margin: 0;
    max-width: 28em;
    font-family: var(--lp-font, 'Roboto', sans-serif);
    font-size: 0.9375rem;
    font-weight: 400;
    line-height: 1.65;
    color: var(--lp-text-secondary, #5f6368);
}

@media (max-width: 992px) {
    body.page-about-fullscreen {
        --lp-marketing-hero-offset: calc(var(--header-offset) + var(--lp-breadcrumb-bar-height));
    }

    /* 移动端：所有区块标题居中（含 Overview 双栏区） */
    .about-section-header,
    .about-section-header--left-desktop {
        margin-left: auto;
        margin-right: auto;
        text-align: center;
    }

    .about-hero-stats {
        grid-template-columns: 1fr;
        gap: var(--lp-spacing-md, 16px);
    }

    .about-story-grid {
        grid-template-columns: 1fr;
    }

    .about-story-visual__img {
        max-width: 100%;
    }

    .about-value-grid {
        grid-template-columns: 1fr;
    }

    .about-value-card,
    .about-value-card:nth-child(4) {
        grid-column: auto;
    }

    .about-timeline-alt::before {
        left: 12px;
    }

    .about-timeline-alt__item,
    .about-timeline-alt__item--left,
    .about-timeline-alt__item--right {
        width: 100%;
        margin: 0;
        padding: 0 0 var(--lp-spacing-lg, 24px) 44px;
        text-align: left;
    }

    .about-timeline-alt__item::after {
        left: 4px !important;
        right: auto !important;
    }

    .about-trust-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .about-team-grid {
        grid-template-columns: 1fr;
    }

    .page-about-fullscreen .lp-hero--fullscreen {
        padding: 0;
        margin: 0;
    }

    .page-about-fullscreen .lp-hero--fullscreen.lp-hero--has-bg .lp-hero__bg {
        min-height: calc(100svh - var(--lp-marketing-hero-offset));
        padding-bottom: 88px;
    }
}