@charset "utf-8";

/* 钉钉与飞书公开集成页共享视觉和响应式样式，by AI.Coding */
:root {
    --brand-blue: #1768e5;
    --page-bg: #f3f7fc;
    --surface: #ffffff;
    --text-main: #132441;
    --text-secondary: #62718a;
    --line: #dfe8f3;
    --shadow: 0 22px 58px rgba(31, 79, 143, .12);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    min-width: 320px;
    margin: 0;
    color: var(--text-main);
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
    background: var(--page-bg);
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.page-shell { overflow: hidden; }

.theme-dingtalk {
    --platform: #1677ff;
    --platform-deep: #0b54c7;
    --platform-soft: #eaf4ff;
    --platform-rgb: 22, 119, 255;
    --accent: #31c8ff;
}

.theme-feishu {
    --platform: #5b65f5;
    --platform-deep: #3948c7;
    --platform-soft: #eff0ff;
    --platform-rgb: 91, 101, 245;
    --accent: #17c9a2;
}

.theme-welink {
    --platform: #0a59f7;
    --platform-deep: #0742b8;
    --platform-soft: #eaf2ff;
    --platform-rgb: 10, 89, 247;
    --accent: #31c8ff;
}

/* 首屏使用统一浅色基调，并通过平台色区分钉钉与飞书。 */
.platform-hero {
    position: relative;
    min-height: 700px;
    padding: 142px 28px 82px;
    overflow: hidden;
    background:
        radial-gradient(circle at 12% 18%, rgba(var(--platform-rgb), .16), transparent 29%),
        radial-gradient(circle at 87% 20%, rgba(var(--platform-rgb), .10), transparent 25%),
        linear-gradient(180deg, #edf5ff 0%, #f7faff 62%, #f3f7fc 100%);
}
.platform-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    opacity: .44;
    background-image:
        linear-gradient(rgba(35, 105, 198, .08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(35, 105, 198, .08) 1px, transparent 1px);
    background-size: 72px 72px;
    mask-image: linear-gradient(to bottom, #000, transparent 91%);
}
.platform-hero::after {
    content: "";
    position: absolute;
    right: -190px;
    bottom: -350px;
    width: 700px;
    height: 700px;
    border: 1px solid rgba(var(--platform-rgb), .10);
    border-radius: 50%;
    box-shadow: 0 0 0 80px rgba(var(--platform-rgb), .024), 0 0 0 160px rgba(var(--platform-rgb), .014);
}
.hero-inner {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: .94fr 1.06fr;
    align-items: center;
    gap: 72px;
    width: min(1180px, 100%);
    margin: 0 auto;
}
.hero-copy { animation: reveal-up .7s ease both; }
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 22px;
    color: var(--platform-deep);
    font-family: Georgia, "Times New Roman", serif;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .2em;
}
.eyebrow::before {
    content: "";
    width: 34px;
    height: 2px;
    background: linear-gradient(90deg, var(--platform), var(--accent));
}
.platform-hero h1 {
    margin: 0;
    font-family: "STSong", "Songti SC", "Microsoft YaHei", serif;
    font-size: clamp(46px, 5.1vw, 70px);
    line-height: 1.13;
    letter-spacing: -.045em;
}
.platform-hero h1 span {
    display: block;
    margin-top: 7px;
    color: var(--platform);
}
.hero-description {
    max-width: 580px;
    margin: 27px 0 0;
    color: var(--text-secondary);
    font-size: 17px;
    line-height: 1.9;
}
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 13px;
    margin-top: 31px;
}
.platform-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    min-width: 158px;
    height: 50px;
    padding: 0 24px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 650;
    transition: transform .2s ease, box-shadow .2s ease, background-color .2s ease;
}
.platform-button::after { content: "→"; font-size: 17px; transition: transform .2s ease; }
.platform-button:hover { transform: translateY(-2px); }
.platform-button:hover::after { transform: translateX(3px); }
.button-primary {
    color: #fff;
    background: linear-gradient(135deg, var(--platform), var(--platform-deep));
    box-shadow: 0 16px 34px rgba(var(--platform-rgb), .24);
}
.button-secondary {
    color: #24476f;
    background: rgba(255, 255, 255, .75);
    border: 1px solid rgba(79, 126, 187, .25);
}
.button-secondary:hover { background: #fff; }
.hero-points {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin: 37px 0 0;
    padding: 0;
    color: #687993;
    font-size: 13px;
    list-style: none;
}
.hero-points li { display: inline-flex; align-items: center; gap: 8px; }
.hero-points li::before {
    content: "";
    width: 6px;
    height: 6px;
    background: var(--platform);
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(var(--platform-rgb), .09);
}

.integration-visual {
    position: relative;
    min-height: 500px;
    animation: reveal-up .8s .1s ease both;
}
.visual-orbit {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 470px;
    height: 470px;
    border: 1px solid rgba(var(--platform-rgb), .16);
    border-radius: 50%;
    transform: translate(-50%, -50%);
}
.visual-orbit::before,
.visual-orbit::after {
    content: "";
    position: absolute;
    border: 1px dashed rgba(var(--platform-rgb), .12);
    border-radius: 50%;
}
.visual-orbit::before { inset: 48px; }
.visual-orbit::after { inset: 98px; }
.visual-line {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 390px;
    height: 1px;
    background: linear-gradient(90deg, rgba(var(--platform-rgb), .15), rgba(var(--platform-rgb), .62), rgba(var(--platform-rgb), .16));
    transform: translate(-50%, -50%) rotate(-17deg);
}
.platform-node,
.oa-node {
    position: absolute;
    z-index: 2;
    width: 194px;
    padding: 22px;
    background: rgba(255, 255, 255, .90);
    border: 1px solid rgba(87, 133, 190, .18);
    border-radius: 20px;
    box-shadow: 0 22px 48px rgba(41, 89, 151, .14);
    backdrop-filter: blur(12px);
}
.platform-node { top: 48px; right: 6px; }
.oa-node { bottom: 48px; left: 0; }
.node-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 54px;
    height: 54px;
    color: #fff;
    background: linear-gradient(145deg, var(--platform), var(--platform-deep));
    border-radius: 17px;
    box-shadow: 0 13px 28px rgba(var(--platform-rgb), .22);
    font-family: Georgia, "Times New Roman", serif;
    font-size: 17px;
    font-weight: 700;
}
.node-logo-image {
    display: block;
    width: 128px;
    height: 46px;
    object-fit: contain;
    border-radius: 14px;
}
.oa-node .node-icon { background: linear-gradient(145deg, #a7d132, #66aa2b); box-shadow: 0 13px 28px rgba(97, 155, 43, .20); }
.platform-node strong,
.oa-node strong { display: block; margin-top: 13px; font-size: 17px; }
.platform-node small,
.oa-node small { display: block; margin-top: 6px; color: #76859b; font-size: 10px; letter-spacing: .08em; }
.core-node {
    position: absolute;
    z-index: 3;
    top: 50%;
    left: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 160px;
    height: 160px;
    color: #fff;
    background: linear-gradient(145deg, #3a98fa, #1768e5);
    border: 1px solid rgba(255, 255, 255, .55);
    border-radius: 43px;
    box-shadow: 0 28px 62px rgba(23, 104, 229, .25), inset 0 1px rgba(255, 255, 255, .30);
    transform: translate(-50%, -50%) rotate(5deg);
}
.core-node strong { font-size: 25px; transform: rotate(-5deg); }
.core-node small { margin-top: 7px; font-size: 10px; letter-spacing: .13em; opacity: .78; transform: rotate(-5deg); }
.visual-note {
    position: absolute;
    z-index: 4;
    right: 8px;
    bottom: 72px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 15px;
    color: var(--platform-deep);
    background: rgba(255, 255, 255, .94);
    border: 1px solid rgba(var(--platform-rgb), .18);
    border-radius: 999px;
    box-shadow: 0 13px 28px rgba(40, 88, 151, .11);
    font-size: 11px;
    font-weight: 650;
}
.visual-note::before { content: "✓"; color: var(--platform); }

.platform-section { position: relative; padding: 96px 28px; }
.section-inner { width: min(1180px, 100%); margin: 0 auto; }
.section-kicker {
    margin-bottom: 12px;
    color: var(--platform-deep);
    font-family: Georgia, "Times New Roman", serif;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .2em;
}
.section-head h2 {
    margin: 0;
    font-family: "STSong", "Songti SC", "Microsoft YaHei", serif;
    font-size: clamp(34px, 4vw, 48px);
    line-height: 1.25;
    letter-spacing: -.035em;
}
.section-head p {
    max-width: 690px;
    margin: 17px 0 0;
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.85;
}

/* 能力区块用连续卡片表达从连接到业务协同的完整链路。 */
.capability-section { background: #fff; }
.capability-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    margin-top: 48px;
    overflow: hidden;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 20px;
    box-shadow: var(--shadow);
}
.capability-card { position: relative; min-height: 225px; padding: 31px 27px; }
.capability-card + .capability-card { border-left: 1px solid var(--line); }
.capability-index {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    color: #fff;
    background: linear-gradient(145deg, var(--platform), var(--platform-deep));
    border-radius: 13px;
    box-shadow: 0 12px 25px rgba(var(--platform-rgb), .18);
    font-family: Georgia, serif;
    font-size: 13px;
    font-weight: 700;
}
.capability-card h3 { margin: 28px 0 11px; font-size: 17px; }
.capability-card p { margin: 0; color: var(--text-secondary); font-size: 13px; line-height: 1.78; }

/* 官方文档统一跳转致远开放平台，避免继续依赖本地附件。 */
.document-section {
    background:
        radial-gradient(circle at 88% 12%, rgba(var(--platform-rgb), .08), transparent 24%),
        linear-gradient(180deg, #f3f7fc, #edf5ff);
}
.document-layout {
    display: grid;
    grid-template-columns: .72fr 1.28fr;
    align-items: start;
    gap: 60px;
}
.document-list { display: grid; gap: 16px; }
.document-card {
    position: relative;
    display: grid;
    grid-template-columns: 56px 1fr auto;
    align-items: center;
    gap: 18px;
    min-height: 142px;
    padding: 26px 28px;
    overflow: hidden;
    background: rgba(255, 255, 255, .91);
    border: 1px solid rgba(87, 133, 190, .20);
    border-radius: 18px;
    box-shadow: 0 18px 42px rgba(31, 79, 143, .09);
    transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}
.document-card::before {
    content: "";
    position: absolute;
    inset: 0 auto 0 0;
    width: 3px;
    background: linear-gradient(180deg, var(--platform), var(--accent));
}
.document-card:hover {
    transform: translateY(-3px);
    border-color: rgba(var(--platform-rgb), .36);
    box-shadow: 0 24px 48px rgba(31, 79, 143, .14);
}
.document-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    color: var(--platform-deep);
    background: var(--platform-soft);
    border-radius: 16px;
    font-family: Georgia, serif;
    font-size: 15px;
    font-weight: 700;
}
.document-card strong { display: block; font-size: 16px; line-height: 1.55; }
.document-card small { display: block; margin-top: 8px; color: #7b899e; font-size: 12px; }
.document-arrow { color: var(--platform); font-size: 22px; transition: transform .2s ease; }
.document-card:hover .document-arrow { transform: translateX(4px); }

.path-section { padding-top: 0; background: #edf5ff; }
.path-panel {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    overflow: hidden;
    color: #fff;
    background: linear-gradient(120deg, var(--platform-deep), var(--platform) 66%, var(--accent));
    border-radius: 22px;
    box-shadow: 0 26px 58px rgba(var(--platform-rgb), .20);
}
.path-step { position: relative; min-height: 180px; padding: 35px 32px; }
.path-step + .path-step { border-left: 1px solid rgba(255, 255, 255, .14); }
.path-step span { color: rgba(255, 255, 255, .66); font-family: Georgia, serif; font-size: 12px; }
.path-step strong { display: block; margin-top: 34px; font-size: 17px; }
.path-step p { margin: 9px 0 0; color: rgba(255, 255, 255, .70); font-size: 12px; line-height: 1.65; }
.path-step:not(:last-child)::after {
    content: "→";
    position: absolute;
    top: 50%;
    right: -11px;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    color: var(--platform);
    background: #fff;
    border-radius: 50%;
    font-size: 12px;
    transform: translateY(-50%);
}

.site-footer {
    padding: 29px 24px 32px;
    color: #78869a;
    background: #fff;
    border-top: 1px solid var(--line);
    text-align: center;
    font-size: 12px;
    line-height: 1.9;
}
.footer-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 20px; margin-bottom: 4px; color: #4f6078; }
.footer-links a:hover { color: var(--platform); }

@keyframes reveal-up {
    from { opacity: 0; transform: translateY(18px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 1030px) {
    .platform-hero { min-height: auto; padding-top: 118px; }
    .hero-inner { grid-template-columns: 1fr; gap: 36px; }
    .hero-copy { max-width: 760px; }
    .integration-visual { width: min(620px, 100%); margin: 0 auto; }
    .capability-grid { grid-template-columns: repeat(2, 1fr); }
    .capability-card:nth-child(3) { border-top: 1px solid var(--line); border-left: 0; }
    .capability-card:nth-child(4) { border-top: 1px solid var(--line); }
    .document-layout { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 720px) {
    .platform-hero { padding: 108px 18px 66px; }
    .platform-hero h1 { font-size: clamp(40px, 12vw, 58px); }
    .hero-description { font-size: 15px; }
    .integration-visual { min-height: 430px; transform: scale(.87); transform-origin: center top; margin-bottom: -50px; }
    .platform-section { padding: 72px 18px; }
    .document-card { grid-template-columns: 50px 1fr auto; gap: 14px; padding: 22px 20px; }
    .document-icon { width: 50px; height: 50px; }
    .path-panel { grid-template-columns: 1fr; }
    .path-step { min-height: 150px; }
    .path-step + .path-step { border-top: 1px solid rgba(255, 255, 255, .14); border-left: 0; }
    .path-step:not(:last-child)::after { top: auto; right: 50%; bottom: -11px; transform: translateX(50%) rotate(90deg); }
}

@media (max-width: 500px) {
    .hero-actions { display: grid; grid-template-columns: 1fr; }
    .hero-actions .platform-button { width: 100%; }
    .hero-points { display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px; }
    .integration-visual { left: 50%; width: 480px; transform: translateX(-50%) scale(.72); margin-bottom: -120px; }
    .capability-grid { grid-template-columns: 1fr; }
    .capability-card { min-height: 190px; }
    .capability-card + .capability-card { border-top: 1px solid var(--line); border-left: 0; }
    .document-card { grid-template-columns: 46px 1fr; }
    .document-arrow { display: none; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}