/* ===== 智维官网样式 ===== */
:root {
    --primary: #4f6ef7;
    --primary-deep: #3b53d0;
    --violet: #8b5cf6;
    --ink: #0d1526;
    --ink-2: #26314a;
    --muted: #5d6780;
    --line: #e8ecf5;
    --bg: #ffffff;
    --bg-alt: #f6f8fd;
    --radius: 16px;
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, .05);
    --shadow-md: 0 12px 32px rgba(23, 37, 84, .09);
    --shadow-lg: 0 28px 60px rgba(23, 37, 84, .16);
    --header-h: 68px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img, svg { display: block; }
ul { list-style: none; }
.container { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 48px;
    padding: 0 26px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: .01em;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
    white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
    color: #fff;
    background: linear-gradient(135deg, var(--primary) 0%, var(--violet) 100%);
    box-shadow: 0 10px 24px rgba(79, 110, 247, .28);
}
.btn-primary:hover { box-shadow: 0 16px 32px rgba(79, 110, 247, .36); }
.btn-ghost {
    color: #e8ecff;
    border: 1px solid rgba(255, 255, 255, .22);
    background: rgba(255, 255, 255, .05);
}
.btn-ghost:hover { background: rgba(255, 255, 255, .12); }
.btn-light { color: var(--primary-deep); background: #fff; box-shadow: 0 10px 26px rgba(8, 15, 40, .18); }
.btn-sm { height: 38px; padding: 0 18px; font-size: 14px; }

/* ===== 顶部导航 ===== */
.site-header {
    position: fixed;
    inset: 0 0 auto 0;
    height: var(--header-h);
    z-index: 100;
    background: rgba(255, 255, 255, 0);
    transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
    border-bottom: 1px solid transparent;
}
.site-header.scrolled {
    background: rgba(255, 255, 255, .86);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    border-bottom-color: var(--line);
    box-shadow: 0 6px 24px rgba(15, 23, 42, .05);
}
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }

.brand { display: inline-flex; align-items: center; gap: 10px; color: #fff; transition: color .3s ease; }
.site-header.scrolled .brand { color: var(--ink); }
.brand-mark {
    width: 34px; height: 34px; border-radius: 10px;
    display: grid; place-items: center;
    color: #fff;
    background: linear-gradient(135deg, var(--primary), var(--violet));
    box-shadow: 0 6px 16px rgba(79, 110, 247, .35);
    flex: none;
}
.brand-mark svg { width: 20px; height: 20px; }
.brand-text { display: inline-flex; align-items: center; gap: 10px; font-size: 15px; letter-spacing: .01em; }
.brand-text strong { font-size: 17px; font-weight: 700; }
.brand-divider { width: 1px; height: 14px; background: currentColor; opacity: .28; }
.brand-sub { opacity: .85; font-weight: 500; }

.nav { display: flex; align-items: center; gap: 6px; }
.nav-link {
    position: relative;
    padding: 8px 14px;
    border-radius: 999px;
    font-size: 14.5px;
    font-weight: 500;
    color: rgba(255, 255, 255, .78);
    transition: color .2s ease, background .2s ease;
}
.nav-link:hover { color: #fff; background: rgba(255, 255, 255, .1); }
.site-header.scrolled .nav-link { color: var(--muted); }
.site-header.scrolled .nav-link:hover { color: var(--ink); background: var(--bg-alt); }
.nav-link.active { color: #fff; }
.site-header.scrolled .nav-link.active { color: var(--primary); background: rgba(79, 110, 247, .08); }

.header-actions { display: flex; align-items: center; gap: 10px; }
.nav-toggle {
    display: none;
    width: 40px; height: 40px;
    border: 1px solid rgba(255, 255, 255, .25);
    background: rgba(255, 255, 255, .08);
    border-radius: 10px;
    padding: 10px;
    cursor: pointer;
}
.nav-toggle span { display: block; height: 2px; background: #fff; border-radius: 2px; margin: 3px 0; transition: opacity .2s; }
.site-header.scrolled .nav-toggle { border-color: var(--line); background: var(--bg-alt); }
.site-header.scrolled .nav-toggle span { background: var(--ink); }

/* ===== 首屏 ===== */
.hero {
    position: relative;
    overflow: hidden;
    background: #080d1c;
    color: #fff;
    padding: calc(var(--header-h) + 72px) 0 96px;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-glow { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .55; }
.glow-a { width: 560px; height: 560px; top: -180px; right: 4%; background: radial-gradient(circle, rgba(79, 110, 247, .65), transparent 65%); }
.glow-b { width: 480px; height: 480px; bottom: -220px; left: -60px; background: radial-gradient(circle, rgba(139, 92, 246, .5), transparent 65%); }
.hero-grid {
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 40%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 40%, transparent 100%);
}
.hero-inner {
    position: relative;
    display: grid;
    grid-template-columns: 1.08fr .92fr;
    align-items: center;
    gap: 56px;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 7px 14px 7px 12px;
    border-radius: 999px;
    font-size: 13px;
    letter-spacing: .02em;
    color: #c9d4ff;
    background: rgba(255, 255, 255, .06);
    border: 1px solid rgba(255, 255, 255, .12);
    backdrop-filter: blur(6px);
}
.hero-badge .dot {
    width: 7px; height: 7px; border-radius: 50%;
    background: #6ee7b7;
    box-shadow: 0 0 0 4px rgba(110, 231, 183, .14);
}
.hero h1 {
    margin: 22px 0 20px;
    font-size: clamp(38px, 4.6vw, 62px);
    line-height: 1.08;
    letter-spacing: -.02em;
    font-weight: 700;
}
.gradient-text {
    background: linear-gradient(100deg, #9db2ff 0%, #c8b6ff 55%, #e9d5ff 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.hero-sub { font-size: clamp(16px, 1.35vw, 19px); color: #cfd8f2; max-width: 560px; font-weight: 500; }
.hero-desc { margin-top: 14px; font-size: 15px; line-height: 1.85; color: #8e9ab8; max-width: 540px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px 24px; margin-top: 34px; padding-top: 22px; border-top: 1px solid rgba(255, 255, 255, .08); }
.hero-tags li {
    position: relative;
    padding-left: 16px;
    font-size: 13px;
    color: #93a0bd;
}
.hero-tags li::before {
    content: "";
    position: absolute; left: 0; top: 50%;
    width: 6px; height: 6px; margin-top: -3px;
    border-radius: 2px;
    background: linear-gradient(135deg, #6d8bff, #b794f6);
}

/* 产品示意面板 */
.hero-visual { position: relative; }
.panel {
    border-radius: 18px;
    background: linear-gradient(165deg, rgba(23, 32, 58, .92), rgba(12, 18, 36, .96));
    border: 1px solid rgba(255, 255, 255, .1);
    box-shadow: 0 40px 80px rgba(0, 0, 0, .45), inset 0 1px 0 rgba(255, 255, 255, .06);
    overflow: hidden;
    backdrop-filter: blur(12px);
    animation: floatPanel 7s ease-in-out infinite;
}
@keyframes floatPanel {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}
.panel-head {
    display: flex; align-items: center; gap: 12px;
    padding: 14px 18px;
    border-bottom: 1px solid rgba(255, 255, 255, .07);
    background: rgba(255, 255, 255, .02);
}
.panel-dots { display: inline-flex; gap: 6px; }
.panel-dots i { width: 8px; height: 8px; border-radius: 50%; background: rgba(255, 255, 255, .18); }
.panel-dots i:first-child { background: #ff7b72; }
.panel-dots i:nth-child(2) { background: #f2c94c; }
.panel-dots i:nth-child(3) { background: #4ade80; }
.panel-title { font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: #7f8cab; }
.panel-state { margin-left: auto; display: inline-flex; align-items: center; gap: 7px; font-size: 12px; color: #9fe6c6; }
.pulse { width: 6px; height: 6px; border-radius: 50%; background: #4ade80; box-shadow: 0 0 0 0 rgba(74, 222, 128, .6); animation: pulse 1.8s infinite; }
@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(74, 222, 128, .5); }
    70% { box-shadow: 0 0 0 7px rgba(74, 222, 128, 0); }
    100% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0); }
}
.panel-body { padding: 22px 20px 20px; }
.step { display: flex; align-items: center; gap: 14px; }
.step-no {
    width: 32px; height: 32px; flex: none;
    display: grid; place-items: center;
    border-radius: 9px;
    font-size: 11px; font-weight: 700; letter-spacing: .04em;
    color: #a9b8ff;
    background: rgba(79, 110, 247, .14);
    border: 1px solid rgba(121, 145, 255, .25);
}
.step-text { display: flex; flex-direction: column; line-height: 1.45; }
.step-text strong { font-size: 14px; color: #e7ecff; font-weight: 600; }
.step-text small { font-size: 11.5px; color: #7c89a8; }
.step-badge {
    margin-left: auto;
    font-size: 11px;
    padding: 3px 9px;
    border-radius: 999px;
    border: 1px solid transparent;
}
.step-badge.ok { color: #86efac; background: rgba(74, 222, 128, .1); border-color: rgba(74, 222, 128, .2); }
.step-badge.run { color: #93c5fd; background: rgba(96, 165, 250, .1); border-color: rgba(96, 165, 250, .22); }
.step-badge.idle { color: #94a3b8; background: rgba(148, 163, 184, .08); border-color: rgba(148, 163, 184, .16); }
.step-line { width: 1px; height: 18px; margin-left: 16px; background: linear-gradient(rgba(255, 255, 255, .18), rgba(255, 255, 255, .04)); }
.panel-result {
    margin-top: 20px;
    padding: 14px 16px;
    border-radius: 12px;
    background: rgba(255, 255, 255, .03);
    border: 1px solid rgba(255, 255, 255, .06);
}
.result-label { font-size: 11px; letter-spacing: .06em; color: #7c89a8; margin-bottom: 12px; text-transform: uppercase; }
.skeleton { display: flex; flex-direction: column; gap: 9px; }
.skeleton span {
    height: 7px; border-radius: 4px;
    background: linear-gradient(90deg, rgba(79, 110, 247, .5), rgba(139, 92, 246, .35), rgba(79, 110, 247, .5));
    background-size: 200% 100%;
    animation: shimmer 2.6s linear infinite;
}
.skeleton span:nth-child(2) { opacity: .75; }
.skeleton span:nth-child(3) { opacity: .55; }
@keyframes shimmer {
    0% { background-position: 0% 0; }
    100% { background-position: 200% 0; }
}
.panel-foot {
    display: flex; align-items: center; gap: 10px;
    padding: 12px 20px;
    border-top: 1px solid rgba(255, 255, 255, .06);
    font-size: 11px; color: #6f7c99;
    letter-spacing: .04em;
}
.panel-foot-line { flex: 1; height: 1px; background: linear-gradient(90deg, rgba(255, 255, 255, .12), transparent); }

/* ===== 通用区块 ===== */
.section { padding: 104px 0; }
.section-alt { background: var(--bg-alt); }
.section-head { max-width: 720px; margin-bottom: 52px; }
.section-no {
    display: inline-block;
    font-size: 12.5px;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--primary);
}
.section-head h2 {
    margin: 14px 0 14px;
    font-size: clamp(26px, 2.9vw, 38px);
    line-height: 1.25;
    letter-spacing: -.015em;
    font-weight: 700;
    color: var(--ink);
}
.section-lead { color: var(--muted); font-size: 15.5px; }

/* ===== 业务痛点 ===== */
.pain-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 64px; align-items: start; }
.pain-text p { font-size: 16px; line-height: 1.95; color: var(--ink-2); margin-bottom: 20px; text-align: justify; }
.pain-text strong { color: var(--primary-deep); font-weight: 600; }
.pain-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.pain-card {
    padding: 22px 20px;
    border-radius: var(--radius);
    background: #fff;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
    transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.pain-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: #d9e2fb; }
.pain-icon {
    display: grid; place-items: center;
    width: 42px; height: 42px;
    border-radius: 11px;
    color: var(--primary);
    background: linear-gradient(135deg, rgba(79, 110, 247, .11), rgba(139, 92, 246, .1));
    margin-bottom: 14px;
}
.pain-icon svg { width: 21px; height: 21px; }
.pain-card strong { display: block; font-size: 15.5px; margin-bottom: 4px; }
.pain-card p { font-size: 13px; color: var(--muted); line-height: 1.65; }

/* ===== 核心能力 ===== */
.cap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.cap-card {
    padding: 30px 26px;
    border-radius: var(--radius);
    background: #fff;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
    transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.cap-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: #d7e0fb; }
.cap-icon {
    display: grid; place-items: center;
    width: 46px; height: 46px;
    border-radius: 12px;
    color: var(--primary);
    background: linear-gradient(135deg, rgba(79, 110, 247, .12), rgba(139, 92, 246, .12));
    margin-bottom: 20px;
}
.cap-icon svg { width: 23px; height: 23px; }
.cap-card h3 { font-size: 17px; font-weight: 650; margin-bottom: 8px; letter-spacing: -.01em; }
.cap-card p { font-size: 14px; color: var(--muted); line-height: 1.75; }

.compliance {
    display: flex; gap: 18px; align-items: flex-start;
    margin-top: 26px;
    padding: 24px 26px;
    border-radius: var(--radius);
    background: linear-gradient(100deg, rgba(79, 110, 247, .06), rgba(139, 92, 246, .05));
    border: 1px solid rgba(79, 110, 247, .16);
}
.compliance-icon { color: var(--primary); flex: none; margin-top: 2px; }
.compliance-icon svg { width: 26px; height: 26px; }
.compliance strong { display: block; font-size: 15px; margin-bottom: 5px; }
.compliance p { font-size: 14px; color: var(--ink-2); line-height: 1.8; }
.compliance b { color: var(--primary-deep); font-weight: 650; }

/* ===== 关于我们 ===== */
.about-grid { display: block; }
.about-en { font-size: 13px !important; letter-spacing: .02em; color: var(--muted) !important; margin-bottom: 18px !important; }
.about-main p { font-size: 15.5px; line-height: 1.95; color: var(--ink-2); margin-bottom: 18px; text-align: justify; }
.about-stats { display: flex; gap: 14px; margin-top: 34px; }
.stat {
    flex: 1;
    padding: 20px 18px;
    border-radius: 14px;
    background: var(--bg-alt);
    border: 1px solid var(--line);
    text-align: center;
}
.stat strong {
    display: block;
    font-size: 28px;
    line-height: 1.1;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--violet));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.stat span { display: block; margin-top: 6px; font-size: 12.5px; color: var(--muted); }
.about-side { display: flex; flex-direction: column; gap: 14px; }
.person-card {
    display: flex; align-items: center; gap: 16px;
    padding: 20px 22px;
    border-radius: var(--radius);
    background: #fff;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
    transition: transform .25s ease, box-shadow .25s ease;
}
.person-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.avatar {
    width: 46px; height: 46px; flex: none;
    display: grid; place-items: center;
    border-radius: 50%;
    font-size: 16px; font-weight: 600;
    color: #fff;
    background: linear-gradient(135deg, var(--primary), var(--violet));
    box-shadow: 0 6px 16px rgba(79, 110, 247, .28);
}
.person-info { display: flex; flex-direction: column; line-height: 1.5; min-width: 0; }
.person-info strong { font-size: 15.5px; }
.person-role { font-size: 12.5px; color: var(--muted); margin-bottom: 2px; }
.person-info a { font-size: 13.5px; color: var(--primary); word-break: break-all; }
.person-info a:hover { text-decoration: underline; }

/* ===== 联系我们 ===== */
.section-contact { padding-top: 40px; }
.contact-card {
    position: relative;
    display: block;
    padding: 56px;
    border-radius: 24px;
    overflow: hidden;
    background: linear-gradient(130deg, #0d1428 0%, #16204a 55%, #241a4d 100%);
    color: #fff;
    box-shadow: var(--shadow-lg);
}
.contact-card::before {
    content: "";
    position: absolute;
    width: 420px; height: 420px;
    right: -120px; top: -160px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(139, 92, 246, .35), transparent 65%);
    filter: blur(30px);
    pointer-events: none;
}
.contact-copy { position: relative; }
.contact-copy .section-no { color: #a5b6ff; }
.contact-copy h2 {
    margin: 14px 0 12px;
    font-size: clamp(24px, 2.6vw, 34px);
    line-height: 1.3;
    letter-spacing: -.015em;
}
.contact-copy > p { color: #9fabc9; font-size: 15px; margin-bottom: 30px; }
.contact-lines { display: flex; flex-direction: column; gap: 12px; }
.contact-line {
    display: flex; align-items: center; gap: 14px;
    padding: 13px 16px;
    border-radius: 12px;
    background: rgba(255, 255, 255, .04);
    border: 1px solid rgba(255, 255, 255, .08);
    transition: background .2s ease, border-color .2s ease, transform .2s ease;
}
a.contact-line:hover { background: rgba(255, 255, 255, .08); border-color: rgba(255, 255, 255, .16); transform: translateX(3px); }
.contact-ico {
    width: 38px; height: 38px; flex: none;
    display: grid; place-items: center;
    border-radius: 10px;
    color: #b6c4ff;
    background: rgba(121, 145, 255, .12);
}
.contact-ico svg { width: 19px; height: 19px; }
.contact-line span:last-child { display: flex; flex-direction: column; line-height: 1.45; }
.contact-line strong { font-size: 14.5px; font-weight: 600; color: #eef2ff; }
.contact-line small { font-size: 12px; color: #8894b3; }

.contact-cta {
    position: relative;
    align-self: center;
    padding: 30px 26px;
    border-radius: 18px;
    background: rgba(255, 255, 255, .06);
    border: 1px solid rgba(255, 255, 255, .12);
    backdrop-filter: blur(8px);
}
.cta-kicker { font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: #9fb0e0; }
.contact-cta h3 { font-size: 22px; margin: 8px 0 8px; }
.contact-cta > p { font-size: 13.5px; color: #9fabc9; line-height: 1.75; margin-bottom: 20px; }
.contact-cta .btn { width: 100%; }
.cta-note { margin: 14px 0 0 !important; font-size: 11.5px !important; color: #7f8cad !important; text-align: center; }

/* ===== 英文摘要 ===== */
.english-block { padding: 0 0 72px; background: #fff; }
.english-card {
    max-width: 860px;
    padding: 30px 34px;
    border-radius: var(--radius);
    background: var(--bg-alt);
    border: 1px solid var(--line);
}
.en-title { font-size: 15.5px; font-weight: 700; color: var(--ink); margin-bottom: 6px; }
.english-card > p { font-size: 13px; color: var(--muted); line-height: 1.8; }
.english-card dl { display: grid; grid-template-columns: 1fr; gap: 12px 28px; margin: 18px 0 16px; padding: 16px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.english-card dl div { display: flex; flex-direction: column; gap: 2px; }
.english-card dt { font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: #8a94ab; }
.english-card dd { font-size: 13px; color: var(--ink-2); line-height: 1.6; }
.en-disclaimer { font-weight: 600; color: var(--ink-2) !important; }

/* ===== 页脚 ===== */
.site-footer {
    background: linear-gradient(120deg, #5877f2 0%, #6f63ec 55%, #8b5cf6 100%);
    color: #fff;
    padding: 40px 0 26px;
}
.footer-top { display: flex; align-items: center; justify-content: space-between; gap: 28px; flex-wrap: wrap; }
.footer-brand { display: flex; align-items: center; gap: 12px; }
.brand-mark.small { width: 32px; height: 32px; background: rgba(255, 255, 255, .16); box-shadow: none; border: 1px solid rgba(255, 255, 255, .25); }
.footer-brand div { display: flex; flex-direction: column; line-height: 1.45; }
.footer-brand strong { font-size: 15px; font-weight: 650; }
.footer-brand span:last-child { font-size: 12px; color: rgba(255, 255, 255, .72); }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 22px; }
.footer-links a { font-size: 13px; color: rgba(255, 255, 255, .82); transition: color .2s ease; }
.footer-links a:hover { color: #fff; text-decoration: underline; }
.footer-bottom {
    display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap;
    margin-top: 26px; padding-top: 18px;
    border-top: 1px solid rgba(255, 255, 255, .16);
    font-size: 12.5px; color: rgba(255, 255, 255, .74);
}
.footer-bottom a { color: rgba(255, 255, 255, .74); }
.footer-bottom a:hover { color: #fff; text-decoration: underline; }

/* ===== 滚动出现动画 ===== */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s cubic-bezier(.22, .61, .36, 1), transform .7s cubic-bezier(.22, .61, .36, 1); }
.reveal.in { opacity: 1; transform: none; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .hero-inner { grid-template-columns: 1fr; gap: 48px; }
    .hero-visual { max-width: 520px; }
    .pain-grid, .about-grid { grid-template-columns: 1fr; gap: 40px; }
    .cap-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-card { grid-template-columns: 1fr; gap: 32px; padding: 44px; }
    .english-card dl { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
    .nav {
        position: fixed;
        top: var(--header-h);
        left: 0; right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        padding: 12px 20px 18px;
        background: rgba(255, 255, 255, .97);
        backdrop-filter: blur(14px);
        border-bottom: 1px solid var(--line);
        box-shadow: 0 18px 30px rgba(15, 23, 42, .08);
        transform: translateY(-12px);
        opacity: 0;
        pointer-events: none;
        transition: opacity .22s ease, transform .22s ease;
    }
    .nav.open { opacity: 1; transform: none; pointer-events: auto; }
    .nav-link { color: var(--muted); padding: 12px 14px; border-radius: 10px; }
    .nav-link.active { color: var(--primary); background: rgba(79, 110, 247, .08); }
    .nav-toggle { display: block; }
    .brand-sub { display: none; }
    .brand-divider { display: none; }
    .section { padding: 72px 0; }
    .section-head { margin-bottom: 36px; }
    .hero { padding-top: calc(var(--header-h) + 52px); padding-bottom: 72px; }
    .contact-card { padding: 34px 26px; }
    .english-block { padding-bottom: 52px; }
}

@media (max-width: 560px) {
    .container { width: calc(100% - 36px); }
    .brand-text strong { font-size: 15px; }
    .header-actions .btn { display: none; }
    .hero-actions .btn { flex: 1; }
    .hero-tags { gap: 8px 18px; }
    .cap-grid { grid-template-columns: 1fr; }
    .pain-cards { grid-template-columns: 1fr; }
    .about-stats { flex-direction: column; }
    .compliance { flex-direction: column; gap: 12px; padding: 20px; }
    .english-card { padding: 24px 20px; }
    .footer-top { flex-direction: column; align-items: flex-start; }
    .footer-bottom { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation: none !important; transition: none !important; }
    .reveal { opacity: 1; transform: none; }
}

/* ===== 法务/文档页 ===== */
.legal-hero {
    padding: calc(var(--header-h) + 56px) 0 40px;
    background:
        radial-gradient(ellipse 60% 80% at 85% 0%, rgba(79, 110, 247, .1), transparent 60%),
        var(--bg-alt);
    border-bottom: 1px solid var(--line);
}
.legal-hero h1 { font-size: clamp(26px, 3vw, 36px); letter-spacing: -.015em; margin-bottom: 10px; }
.legal-meta { font-size: 13px; color: var(--muted); }
.legal-wrap { padding: 48px 0 80px; }
.legal-article {
    max-width: 860px;
    font-size: 14.5px;
    color: var(--ink-2);
    line-height: 1.95;
}
.legal-article h2 { font-size: 19px; color: var(--ink); margin: 34px 0 12px; letter-spacing: -.01em; }
.legal-article h2:first-child { margin-top: 0; }
.legal-article h3 { font-size: 15.5px; color: var(--ink); margin: 22px 0 8px; }
.legal-article p { margin-bottom: 10px; text-align: justify; }
.legal-article ul { list-style: disc; margin: 8px 0 14px 22px; }
.legal-article li { margin-bottom: 6px; }
.legal-sign { margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--line); text-align: right; color: var(--muted); }
.back-link { display: inline-flex; align-items: center; gap: 6px; font-size: 13.5px; color: var(--primary); margin-bottom: 18px; }
.back-link:hover { text-decoration: underline; }