/* ============================================================
   官网模板一 voicefox —— 设计系统
   白标注入：品牌 logo/名称/ICP/电话由后端 SSR 注入，颜色为模板语言
   ============================================================ */
:root {
    --brand-1: #4f46e5;
    --brand-2: #7c3aed;
    --brand-soft: #eef2ff;
    --ink: #0f172a;
    --muted: #475569;
    --muted-2: #94a3b8;
    --bg: #ffffff;
    --bg-soft: #f8fafc;
    --line: #e2e8f0;
    --radius: 16px;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);
    --shadow-md: 0 8px 24px rgba(15, 23, 42, .08);
    --shadow-lg: 0 20px 48px rgba(79, 70, 229, .16);
    --grad: linear-gradient(135deg, var(--brand-1), var(--brand-2));
    --font: -apple-system, BlinkMacSystemFont, "SF Pro SC", "PingFang SC",
        "Noto Sans SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--font);
    color: var(--ink);
    background: var(--bg);
    line-height: 1.7;
    font-size: 16px;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 800px; }

/* ---------- 顶部导航 ---------- */
.site-header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255, 255, 255, .85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: border-color .25s, box-shadow .25s;
}
.site-header.scrolled { border-bottom-color: var(--line); box-shadow: var(--shadow-sm); }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 24px; }
.logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; letter-spacing: .2px; white-space: nowrap; flex: none; }
.logo-img { height: 32px; width: auto; }
.logo-mark { display: inline-flex; }
.logo-text { background: linear-gradient(135deg, var(--brand-1), var(--brand-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.site-nav { display: flex; align-items: center; gap: 28px; font-size: 15px; color: var(--muted); margin-left: auto; }
.site-nav > a:hover { color: var(--ink); }
.nav-cta { display: flex; gap: 10px; margin-left: 8px; }

/* ---------- 语言切换（右上角下拉） ---------- */
.nav-right { display: flex; align-items: center; gap: 8px; flex: none; }
.nav-signup { white-space: nowrap; }
.lang-menu { position: relative; }
.lang-menu summary {
    list-style: none; cursor: pointer; user-select: none;
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 14px; color: var(--muted);
    padding: 7px 12px; border-radius: 999px;
    border: 1px solid transparent;
    transition: color .15s, border-color .15s, background .15s;
}
.lang-menu summary::-webkit-details-marker { display: none; }
.lang-menu summary:hover { color: var(--ink); border-color: var(--line); background: #fff; }
.lang-caret {
    width: 0; height: 0; border: 4px solid transparent; border-top-color: currentColor;
    border-bottom: 0; transform: translateY(2px);
}
.lang-pop {
    position: absolute; right: 0; top: calc(100% + 8px); z-index: 120;
    min-width: 156px; padding: 6px;
    background: #fff; border: 1px solid var(--line); border-radius: 12px;
    box-shadow: var(--shadow-md);
}
.lang-item {
    display: block; padding: 8px 14px; border-radius: 8px;
    font-size: 14px; color: var(--muted); white-space: nowrap;
}
.lang-item:hover { background: var(--bg-soft); color: var(--ink); }
.lang-item.active { color: var(--brand-1); background: var(--brand-soft); font-weight: 600; }
.lang-row-mobile { display: none; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav-toggle span { width: 22px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform .25s, opacity .25s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 按钮 ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    border-radius: 999px; font-weight: 600; font-size: 15px;
    padding: 10px 22px; border: 1px solid transparent; cursor: pointer;
    transition: transform .15s, box-shadow .2s, background .2s, color .2s;
    white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 6px 16px rgba(99, 79, 240, .35); }
.btn-primary:hover { box-shadow: 0 8px 22px rgba(99, 79, 240, .45); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: #fff; }
.btn-ghost:hover { border-color: var(--brand-1); color: var(--brand-1); }
.btn-invert { background: #fff; color: var(--brand-1); }
.btn-invert:hover { box-shadow: 0 8px 22px rgba(255, 255, 255, .25); }
.btn-outline { border-color: rgba(255, 255, 255, .55); color: #fff; }
.btn-outline:hover { border-color: #fff; }
.btn-lg { padding: 14px 30px; font-size: 16px; }
.btn-sm { padding: 8px 18px; font-size: 14px; }

/* ---------- Hero（居中式 banner + 宽幅产品视觉带，参考附件1 构图） ---------- */
.hero {
    position: relative;
    padding: 88px 0 96px;
    background:
        radial-gradient(52rem 30rem at 85% -10%, rgba(124, 58, 237, .12), transparent 60%),
        radial-gradient(44rem 26rem at -10% 20%, rgba(79, 70, 229, .10), transparent 60%),
        var(--bg-soft);
}
.hero-center { text-align: center; }
.hero-page { padding: 72px 0 56px; text-align: center; }
.hero-badge {
    display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: 1px;
    color: var(--brand-1); background: var(--brand-soft);
    border: 1px solid rgba(79, 70, 229, .18);
    padding: 5px 14px; border-radius: 999px; margin-bottom: 20px;
}
.hero h1 { font-size: clamp(30px, 3.6vw, 52px); line-height: 1.18; font-weight: 800; letter-spacing: -.5px; margin-bottom: 20px; text-wrap: balance; }
.hero-page h1 { font-size: 40px; }
.grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-sub { font-size: 18px; color: var(--muted); max-width: 36em; margin: 0 auto 32px; }
.hero-page .hero-sub { margin-left: auto; margin-right: auto; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 28px; }
.hero-actions-center { justify-content: center; }
.hero-points { display: flex; gap: 22px; flex-wrap: wrap; color: var(--muted); font-size: 14px; }
.hero-points-center { justify-content: center; }
.hero-points li { display: flex; align-items: center; gap: 7px; }
.hero-points li::before {
    content: ""; width: 15px; height: 15px; flex: none; border-radius: 50%;
    background: var(--brand-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%234f46e5' stroke-width='2.2'%3E%3Cpath d='M3 8.5l3 3 6.5-7'/%3E%3C/svg%3E") center/10px no-repeat;
    border: 1px solid rgba(79, 70, 229, .2);
}

/* ---------- 通用区块 ---------- */
.section { padding: 96px 0; }
.section-soft { background: var(--bg-soft); }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 56px; }
.kicker { font-size: 13px; font-weight: 700; letter-spacing: 2px; color: var(--brand-1); margin-bottom: 10px; text-transform: uppercase; }
.section-head h2 { font-size: 34px; font-weight: 800; letter-spacing: -.3px; margin-bottom: 12px; }
.section-sub { color: var(--muted); font-size: 17px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

/* 场景卡 */
.card {
    background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
    padding: 28px 26px; box-shadow: var(--shadow-sm);
    transition: transform .2s, box-shadow .2s, border-color .2s;
}
.section-soft .card { background: #fff; }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(79, 70, 229, .35); }
.card-icon { font-size: 26px; margin-bottom: 14px; }
.card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.card p { font-size: 14.5px; color: var(--muted); }
.card-more { border-style: dashed; background: transparent; }
.card-link { display: inline-block; margin-top: 10px; color: var(--brand-1); font-weight: 600; font-size: 14.5px; }

/* 三支柱 */
.pillar { background: #fff; border-radius: var(--radius); border: 1px solid var(--line); padding: 30px 28px; box-shadow: var(--shadow-sm); }
.pillar-tag { display: inline-block; font-size: 12.5px; font-weight: 700; color: #6d28d9; background: #f5f3ff; border-radius: 6px; padding: 3px 10px; margin-bottom: 14px; letter-spacing: .5px; }
.pillar h3 { font-size: 19px; margin-bottom: 16px; }
.pillar-list li { position: relative; padding-left: 26px; color: var(--muted); font-size: 14.5px; margin-bottom: 11px; }
.pillar-list li::before {
    content: ""; position: absolute; left: 0; top: 5px; width: 15px; height: 15px; border-radius: 50%;
    background: var(--brand-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%234f46e5' stroke-width='2.2'%3E%3Cpath d='M3 8.5l3 3 6.5-7'/%3E%3C/svg%3E") center/10px no-repeat;
}

/* ---------- 产品能力：图文左右分列 ---------- */
.feature-row {
    display: grid; grid-template-columns: .92fr 1.08fr;
    gap: 56px; align-items: center;
    padding: 44px 0;
}
.feature-row + .feature-row { border-top: 1px solid var(--line); }
.feature-row-rev { grid-template-columns: 1.08fr .92fr; }
.feature-row-rev .feature-copy { order: 2; }
.feature-row-single { display: block; text-align: center; padding: 52px 0 48px; }
.feature-copy-center { max-width: 640px; margin: 0 auto; }
.pillar-list-center { display: grid; grid-template-columns: repeat(2, minmax(0, 260px)); gap: 0 36px; justify-content: center; text-align: left; }
.feature-copy h3 { font-size: 26px; font-weight: 800; letter-spacing: -.3px; margin: 6px 0 12px; line-height: 1.35; }
.feature-desc { color: var(--muted); margin-bottom: 18px; }
.feature-copy .pillar-list { margin-top: 4px; }
.feature-art { min-width: 0; }
.legal-notice {
    margin-bottom: 20px; padding: 12px 18px;
    border: 1px dashed rgba(79, 70, 229, .4); border-radius: 12px;
    background: var(--brand-soft); color: #3730a3; font-size: 14px;
}

/* 深色流程编辑器配图（Engage 右侧） */
.art-flow {
    border-radius: 18px; overflow: hidden;
    background: #171225; border: 1px solid #2a2342;
    box-shadow: 0 24px 64px rgba(23, 18, 37, .35);
}
.art-flow-bar {
    display: flex; align-items: center; gap: 6px;
    padding: 11px 16px; background: #1f1937; border-bottom: 1px solid #2a2342;
}
.art-flow-bar span { width: 10px; height: 10px; border-radius: 50%; background: #3b3358; }
.art-flow-bar span:first-child { background: #f87171; }
.art-flow-bar span:nth-child(2) { background: #fbbf24; }
.art-flow-bar span:nth-child(3) { background: #34d399; }
.art-flow-bar em { margin-left: 10px; font-style: normal; font-size: 12px; color: #8f86b8; font-family: ui-monospace, Menlo, monospace; }
.art-flow-canvas { display: grid; grid-template-columns: 52px 1fr; min-height: 264px; }
.art-node-list { border-right: 1px solid #2a2342; padding: 14px 0; display: flex; flex-direction: column; align-items: center; gap: 14px; }
.art-node-list i { width: 22px; height: 22px; border-radius: 7px; background: #2a2342; border: 1px solid #3b3358; }
.art-node-list i.on { background: #4c3a99; border-color: #7c3aed; box-shadow: 0 0 10px rgba(124, 58, 237, .5); }
.art-flow-board { position: relative; padding: 18px 0 18px 18px;
    background-image: radial-gradient(#2a2342 1px, transparent 1px); background-size: 18px 18px;
}
.af-node {
    position: relative; z-index: 1; width: 190px;
    background: #241d3d; border: 1px solid #3b3358; border-radius: 12px;
    padding: 10px 14px; margin: 10px 0;
}
.af-node b { display: block; font-size: 13.5px; color: #ede9fe; font-weight: 600; }
.af-node span { font-size: 12px; color: #8f86b8; }
.af-node:nth-child(2) { margin-left: 82px; }
.af-node:nth-child(3) { margin-left: 22px; }
.af-node.af-start { border-color: #34d399; }
.af-node.af-start b::before { content: "\25CF"; color: #34d399; margin-right: 6px; font-size: 10px; }
.af-node.af-end { border-color: #f59e0b; }
.af-node.af-end b::before { content: "\25CF"; color: #f59e0b; margin-right: 6px; font-size: 10px; }
.af-links { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; }
.af-links path { fill: none; stroke: #7c3aed; stroke-width: 1.6; opacity: .8; }
.af-links path.dash { stroke-dasharray: 4 5; stroke: #5b4aa8; }

/* Engage：竖向外呼流程管线（附件2） */
.art-pipeline {
    display: flex; flex-direction: column; align-items: center;
    padding: 28px 24px 30px; border-radius: 18px;
    background: linear-gradient(160deg, #faf9ff, #f1eefb);
    border: 1px solid var(--line);
}
.pl-node {
    background: #fff; border: 1px solid var(--line); border-radius: 999px;
    padding: 10px 22px; font-size: 14px; font-weight: 600; color: var(--ink);
    box-shadow: var(--shadow-sm); white-space: nowrap;
}
.pl-top { background: #171225; color: #fff; border-color: #171225; }
.pl-link { width: 2px; height: 26px; background: #c7bffb; position: relative; }
.pl-link::after { content: ""; position: absolute; bottom: -1px; left: -3.5px; border: 4px solid transparent; border-top-color: #c7bffb; }
.pl-fork { height: 34px; }
.pl-row { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
.pl-row .pl-node { font-size: 13px; padding: 8px 16px; }
.pl-ok { color: #047857; border-color: #a7f3d0; background: #ecfdf5; }
.pl-wait { color: #92400e; border-color: #fde68a; background: #fffbeb; }
.pl-deny { color: #b91c1c; border-color: #fecaca; background: #fef2f2; }

/* Analyze：悬浮卡片仪表盘（附件4） */
.art-dash {
    position: relative; display: grid; grid-template-columns: 1.15fr 1fr;
    gap: 14px; padding: 8px 0;
}
.dash-card {
    background: #fff; border: 1px solid var(--line); border-radius: 16px;
    padding: 16px 18px; box-shadow: var(--shadow-md);
}
.dash-main { grid-row: span 2; background: #171225; border-color: #2a2342; }
.dash-title { font-size: 12.5px; color: var(--muted-2); margin-bottom: 10px; font-weight: 600; letter-spacing: .5px; }
.dash-main .dash-title { color: #8f86b8; }
.dash-bignum b { font-size: 30px; font-weight: 800; color: #fff; margin-right: 8px; }
.dash-bignum span { font-size: 12.5px; color: #8f86b8; }
.dash-bars { display: flex; align-items: flex-end; gap: 8px; height: 84px; margin: 14px 0 10px; }
.dash-bars i { flex: 1; border-radius: 6px 6px 2px 2px; background: linear-gradient(180deg, #7c3aed, #4f46e5); opacity: .9; }
.dash-bars i:nth-child(2n) { background: linear-gradient(180deg, #a78bfa, #818cf8); opacity: .55; }
.dash-legend { font-size: 12px; color: #8f86b8; }
.dash-legend .dot { display: inline-block; width: 9px; height: 9px; border-radius: 3px; margin: 0 6px 0 12px; background: #7c3aed; }
.dash-legend .dot.ok { background: #a78bfa; opacity: .6; margin-left: 0; }
.dash-donut {
    position: relative; width: 108px; height: 108px; margin: 6px auto 2px; border-radius: 50%;
    background: conic-gradient(#7c3aed 0 86%, #ede9fe 86% 100%);
    display: flex; align-items: center; justify-content: center;
}
.dash-donut b { font-size: 22px; font-weight: 800; color: var(--brand-1); background: #fff; width: 74px; height: 74px; border-radius: 50%; display: flex; align-items: center; justify-content: center; }
.dash-donut span { display: none; }
.dash-hbar { margin-bottom: 10px; }
.dash-hbar i { display: flex; align-items: center; height: 22px; border-radius: 6px; background: linear-gradient(90deg, #7c3aed, #818cf8); }
.dash-hbar.dim i { background: linear-gradient(90deg, #c4b5fd, #ddd6fe); }
.dash-hbar em { font-style: normal; font-size: 11.5px; color: #fff; padding-left: 8px; white-space: nowrap; }
.dash-hbar.dim em { color: #6d28d9; }

/* 三步走 */
.steps { counter-reset: step; }
.step { position: relative; padding-top: 12px; }
.step-no {
    display: inline-flex; align-items: center; justify-content: center;
    width: 46px; height: 46px; border-radius: 14px; font-weight: 800; font-size: 16px;
    background: var(--grad); color: #fff; box-shadow: 0 6px 16px rgba(99, 79, 240, .3); margin-bottom: 18px;
}
.step h3 { font-size: 18px; margin-bottom: 8px; }
.step p { color: var(--muted); font-size: 14.5px; }
.steps-cta { text-align: center; margin-top: 48px; }

/* FAQ */
.faq-list { display: grid; gap: 14px; }
.faq-list details { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 4px 22px; transition: border-color .2s; }
.faq-list details[open] { border-color: rgba(79, 70, 229, .4); box-shadow: var(--shadow-sm); }
.faq-list summary {
    cursor: pointer; list-style: none; font-weight: 600; font-size: 16px;
    padding: 16px 0; display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
    content: "+"; font-size: 20px; color: var(--brand-1); font-weight: 500; flex: none;
    transition: transform .2s;
}
.faq-list details[open] summary::after { transform: rotate(45deg); }
.faq-body { padding: 0 0 18px; color: var(--muted); font-size: 15px; }

/* CTA 横幅 */
.cta { background: var(--grad); color: #fff; padding: 84px 0; text-align: center; }
.cta h2 { font-size: 32px; font-weight: 800; margin-bottom: 12px; }
.cta p { opacity: .9; font-size: 17px; margin-bottom: 30px; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* 数据卡（关于页） */
.stat-grid { text-align: center; }
.stat { background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius); padding: 42px 20px; }
.stat b { display: block; font-size: 30px; font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; margin-bottom: 6px; }
.stat span { color: var(--muted); font-size: 15px; }
.about-copy { text-align: left; }
.about-copy .hero-sub { margin-bottom: 16px; }

/* ---------- 文档区 ---------- */
.page-docs main { min-height: 60vh; }
.docs-layout {
    display: grid; grid-template-columns: 240px minmax(0, 1fr) 200px;
    gap: 48px; max-width: 1120px; margin: 0 auto; padding: 40px 24px 80px;
    align-items: start;
}
.docs-side { position: sticky; top: 92px; max-height: calc(100vh - 120px); overflow-y: auto; }
.docs-side-head { font-weight: 700; font-size: 15px; margin-bottom: 18px; }
.docs-side-head a { color: var(--ink); }
.docs-group { margin-bottom: 22px; }
.docs-group-title { font-size: 12.5px; font-weight: 700; color: var(--muted-2); letter-spacing: 1px; margin-bottom: 8px; }
.docs-link { display: block; font-size: 14px; color: var(--muted); padding: 6px 10px; border-radius: 8px; margin-bottom: 2px; }
.docs-link:hover { color: var(--ink); background: var(--bg-soft); }
.docs-link.active { color: var(--brand-1); background: var(--brand-soft); font-weight: 600; }
.docs-side-toggle { display: none; }
.docs-main { min-width: 0; }
.docs-toc { position: sticky; top: 92px; font-size: 13.5px; }
.docs-toc-title { font-weight: 700; color: var(--muted-2); font-size: 12.5px; letter-spacing: 1px; margin-bottom: 10px; }
.docs-toc a { display: block; color: var(--muted); padding: 4px 0 4px 12px; border-left: 2px solid var(--line); }
.docs-toc a:hover { color: var(--brand-1); border-left-color: var(--brand-1); }
.docs-pager { display: flex; justify-content: space-between; gap: 16px; margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line); }
.pager-prev, .pager-next { max-width: 46%; border: 1px solid var(--line); border-radius: 12px; padding: 12px 18px; transition: border-color .2s, box-shadow .2s; }
.pager-prev:hover, .pager-next:hover { border-color: rgba(79, 70, 229, .4); box-shadow: var(--shadow-sm); }
.pager-next { margin-left: auto; text-align: right; }
.pager-prev span, .pager-next span { display: block; font-size: 12px; color: var(--muted-2); }
.pager-prev b, .pager-next b { font-size: 14.5px; color: var(--brand-1); }

/* markdown 正文 */
.prose { font-size: 15.5px; color: #1e293b; }
.prose h1 { font-size: 30px; font-weight: 800; margin: 8px 0 20px; letter-spacing: -.3px; }
.prose h2 { font-size: 22px; font-weight: 700; margin: 40px 0 14px; padding-top: 10px; }
.prose h3 { font-size: 17px; font-weight: 700; margin: 28px 0 10px; }
.prose p { margin-bottom: 14px; }
.prose a { color: var(--brand-1); }
.prose a:hover { text-decoration: underline; }
.prose ul, .prose ol { padding-left: 22px; margin-bottom: 14px; }
.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }
.prose li { margin-bottom: 6px; }
.prose code { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 13.5px; background: var(--bg-soft); border: 1px solid var(--line); border-radius: 6px; padding: 1.5px 6px; }
.prose pre { background: #0f172a; color: #e2e8f0; border-radius: 12px; padding: 18px 20px; overflow-x: auto; margin-bottom: 16px; }
.prose pre code { background: none; border: 0; color: inherit; padding: 0; font-size: 13px; }
.prose blockquote { border-left: 3px solid var(--brand-1); background: var(--brand-soft); border-radius: 0 10px 10px 0; padding: 10px 18px; color: #3730a3; margin-bottom: 14px; }
.prose table { width: 100%; border-collapse: collapse; margin-bottom: 16px; font-size: 14px; }
.prose th, .prose td { border: 1px solid var(--line); padding: 8px 12px; text-align: left; }
.prose th { background: var(--bg-soft); font-weight: 600; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 28px 0; }
.prose img { border-radius: 12px; margin-bottom: 14px; }
.legal h2 { font-size: 18px; margin-top: 28px; }

/* ---------- 404 ---------- */
.notfound { text-align: center; padding: 120px 0; }
.nf-code { font-size: 88px; font-weight: 800; line-height: 1; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; margin-bottom: 14px; }

/* ---------- 页脚 ---------- */
.site-footer { background: #0f172a; color: #cbd5e1; padding: 64px 0 28px; font-size: 14.5px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 44px; }
.footer-brand .logo { color: #fff; margin-bottom: 14px; }
.footer-slogan { color: #94a3b8; max-width: 26em; margin-bottom: 10px; }
.footer-phone a { color: #cbd5e1; font-weight: 600; }
.footer-phone a:hover { color: #fff; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 14px; }
.footer-col a { display: block; color: #94a3b8; padding: 4px 0; }
.footer-col a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; border-top: 1px solid rgba(148, 163, 184, .18); padding-top: 22px; color: #94a3b8; font-size: 13.5px; }
.footer-bottom a:hover { color: #fff; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
    .docs-layout { grid-template-columns: 220px minmax(0, 1fr); }
    .docs-toc { display: none; }
}
@media (max-width: 860px) {
    .hero { padding: 56px 0 64px; }
    .hero h1 { font-size: 34px; }
    .hero-page h1 { font-size: 30px; }
    .hero-sub { font-size: 16px; }
    .grid-3 { grid-template-columns: 1fr 1fr; }
    .section { padding: 64px 0; }
    .section-head h2 { font-size: 27px; }
    .footer-grid { grid-template-columns: 1fr 1fr; }

    /* 产品能力图文分列 → 单列（文案在上，配图在下） */
    .feature-row, .feature-row-rev { grid-template-columns: 1fr; gap: 28px; padding: 32px 0; }
    .feature-row-rev .feature-copy { order: 0; }
    .feature-copy h3 { font-size: 22px; }
    .art-dash { grid-template-columns: 1fr; }

    /* 移动端导航抽屉 */
    .nav-toggle { display: flex; }
    .site-nav {
        display: none; position: absolute; top: 68px; left: 0; right: 0;
        flex-direction: column; align-items: stretch; gap: 2px;
        background: #fff; border-bottom: 1px solid var(--line);
        box-shadow: var(--shadow-md); padding: 10px 24px 18px;
    }
    .site-nav.open { display: flex; }
    .site-nav > a { padding: 10px 4px; }
    .nav-wrap { gap: 8px; }
    .nav-signup { padding: 7px 12px; font-size: 13px; }
    .lang-menu summary { padding: 7px 8px; font-size: 13px; }
}
@media (max-width: 640px) {
    .hero h1 { font-size: 31px; }
    .grid-3 { grid-template-columns: 1fr; }
    .container { padding: 0 18px; }
    .hero-actions .btn { flex: 1; }
    .steps-cta .btn { width: 100%; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .footer-bottom { justify-content: center; text-align: center; }
    .docs-pager { flex-direction: column; }
    .pager-next { text-align: left; }
    .hero-points { gap: 12px; font-size: 13px; }
    .pl-node { font-size: 13px; padding: 8px 16px; }

    /* 文档侧栏改抽屉 */
    .docs-layout { grid-template-columns: 1fr; gap: 0; padding-top: 20px; }
    .docs-side {
        position: static; max-height: 0; overflow: hidden; transition: max-height .25s ease;
        background: var(--bg-soft); border-radius: 12px; margin-bottom: 18px;
    }
    .docs-side.open { max-height: 70vh; overflow-y: auto; padding: 4px 16px 16px; }
    .docs-side-toggle {
        display: inline-flex; margin-bottom: 14px; border: 1px solid var(--line);
        background: #fff; border-radius: 999px; padding: 7px 18px; font-size: 14px;
        color: var(--muted); cursor: pointer; font-family: inherit;
    }
}
@media (prefers-reduced-motion: reduce) {
    * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}