/* =========================================================
   云铺官网样式：设计变量 / 基础 / 组件 / 页面
   零 UI 框架依赖，单文件加载
   ========================================================= */

:root {
    --ink: #0b1220;
    --ink-2: #121c30;
    --text: #1b2437;
    --muted: #5c6a80;
    --line: #e2e8f2;
    --bg: #ffffff;
    --soft: #f5f7fc;
    --brand: #2b5cff;
    --brand-2: #6d8cff;
    --accent: #00cfa0;
    --radius: 14px;
    --radius-lg: 20px;
    --shadow-1: 0 1px 2px rgba(16, 24, 40, 0.05), 0 10px 26px -16px rgba(16, 24, 40, 0.18);
    --shadow-2: 0 30px 70px -30px rgba(9, 16, 32, 0.42);
    --wrap: 1180px;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
        "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { margin: 0; line-height: 1.25; letter-spacing: -0.02em; font-weight: 700; }
p { margin: 0; }
ul, ol, dl, dd { margin: 0; padding: 0; list-style: none; }
button { font: inherit; color: inherit; }
em { font-style: normal; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

.skip {
    position: absolute; left: -9999px; top: 0; padding: 10px 16px;
    background: var(--brand); color: #fff; z-index: 99;
}
.skip:focus { left: 12px; top: 12px; }

:focus-visible { outline: 2px solid var(--brand-2); outline-offset: 3px; }

/* ---------- 按钮 ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 22px; border-radius: 999px; border: 1px solid transparent;
    font-weight: 600; font-size: 15px; cursor: pointer; white-space: nowrap;
    transition: transform .18s ease, box-shadow .18s ease, background-color .18s ease, color .18s ease, border-color .18s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn--primary { background: var(--brand); color: #fff; box-shadow: 0 10px 24px -12px rgba(43, 92, 255, .9); }
.btn--primary:hover { background: #1f4ceb; }
.btn--ghost { background: #fff; color: var(--text); border-color: var(--line); }
.btn--ghost:hover { border-color: #c8d3e6; box-shadow: var(--shadow-1); }
.btn--ghost-light { background: rgba(255, 255, 255, .08); color: #fff; border-color: rgba(255, 255, 255, .28); }
.btn--ghost-light:hover { background: rgba(255, 255, 255, .16); }
.btn--sm { padding: 9px 16px; font-size: 14px; }
.btn--lg { padding: 15px 30px; font-size: 16px; }
.btn--block { width: 100%; }

.link { display: inline-flex; align-items: center; gap: 6px; color: var(--brand); font-weight: 600; font-size: 15px; }
.link:hover { gap: 10px; }

.eyebrow {
    display: inline-block; margin-bottom: 14px; padding: 5px 12px; border-radius: 999px;
    background: rgba(109, 140, 255, .16); color: #cdd9ff;
    font-size: 13px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
}
.eyebrow--dark { background: #eaf0ff; color: var(--brand); }

.pill {
    display: inline-block; padding: 4px 10px; border-radius: 999px;
    background: #e9f8f3; color: #08795f; font-size: 12px; font-weight: 600;
}
.pill--light { background: #eef3ff; color: var(--brand); }

.lead { font-size: 18px; line-height: 1.75; color: var(--muted); }

/* ---------- 头部 ---------- */
.hd {
    position: sticky; top: 0; z-index: 50;
    background: rgba(255, 255, 255, .86);
    backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid transparent;
    transition: border-color .2s ease, box-shadow .2s ease;
}
.hd.is-scrolled { border-bottom-color: var(--line); box-shadow: 0 6px 24px -18px rgba(16, 24, 40, .4); }
.hd__inner { display: flex; align-items: center; gap: 28px; height: 72px; }

.logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: -.02em; }
.logo__mark {
    display: inline-flex; flex-direction: column; justify-content: center; gap: 3px;
    width: 30px; height: 30px; padding: 6px; border-radius: 9px;
    background: linear-gradient(140deg, var(--brand), #4d7bff 60%, #7aa2ff);
    box-shadow: 0 8px 18px -10px rgba(43, 92, 255, .8);
}
.logo__mark i { display: block; height: 2px; border-radius: 2px; background: #fff; opacity: .95; }
.logo__mark i:nth-child(2) { width: 70%; }
.logo__mark i:nth-child(3) { width: 85%; }
.logo__text { font-size: 19px; }
/* 后台上传的网站 LOGO：按高度等比缩放，避免不同尺寸图片撑开导航 */
.logo__img { display: block; height: 36px; width: auto; max-width: 200px; object-fit: contain; }

.nav { display: flex; align-items: center; gap: 2px; margin-left: auto; }
.nav__item { position: relative; }
.nav__link {
    display: inline-block; padding: 8px 14px; border-radius: 8px;
    font-size: 15px; font-weight: 500; color: #33405a;
}
.nav__link:hover { color: var(--brand); background: #f2f5fd; }
.nav__link.is-active { color: var(--brand); font-weight: 600; }

.drop {
    position: absolute; top: calc(100% + 8px); left: 0; min-width: 190px; padding: 8px;
    background: #fff; border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow-2);
    opacity: 0; visibility: hidden; transform: translateY(6px);
    transition: opacity .18s ease, transform .18s ease, visibility .18s;
}
.has-drop:hover .drop, .has-drop:focus-within .drop { opacity: 1; visibility: visible; transform: translateY(0); }
.drop__link { display: block; padding: 9px 12px; border-radius: 8px; font-size: 14px; color: #33405a; }
.drop__link:hover { background: #f2f5fd; color: var(--brand); }

.hd__actions { display: flex; align-items: center; gap: 10px; }

.burger {
    display: none; width: 42px; height: 42px; margin-left: auto; padding: 0;
    background: #fff; border: 1px solid var(--line); border-radius: 10px; cursor: pointer;
}
.burger span { display: block; width: 18px; height: 2px; margin: 4px auto; background: var(--text); transition: .2s; }
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.drawer {
    padding: 12px 24px 24px; background: #fff; border-top: 1px solid var(--line);
    box-shadow: var(--shadow-2);
}
.drawer[hidden] { display: none; }
.drawer__nav { display: grid; gap: 2px; }
.drawer__link { padding: 12px 4px; font-size: 16px; font-weight: 500; border-bottom: 1px solid #f1f4fa; }
.drawer__link.is-active { color: var(--brand); }
.drawer__sub { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; padding: 10px 4px 14px; }
.drawer__sub a { font-size: 14px; color: var(--muted); padding: 6px 0; }
.drawer__actions { display: grid; gap: 10px; margin-top: 18px; }

/* ---------- Hero ---------- */
.hero {
    position: relative; overflow: hidden; color: #fff;
    background: radial-gradient(120% 100% at 85% 0%, #1b2f63 0%, #0c1428 45%, #080e1c 100%);
    padding: 72px 0 0;
}
.hero__glow {
    position: absolute; inset: 0; pointer-events: none;
    background:
        radial-gradient(50% 50% at 78% 24%, rgba(43, 92, 255, .38), transparent 70%),
        radial-gradient(40% 40% at 12% 8%, rgba(0, 207, 160, .16), transparent 70%);
}
.hero__inner { position: relative; display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; padding-bottom: 64px; }
.hero__copy h1 { margin: 6px 0 20px; font-size: clamp(34px, 4.4vw, 56px); line-height: 1.14; letter-spacing: -.03em; }
.hero__copy h1 em {
    background: linear-gradient(100deg, #8fb0ff, #ffffff 55%, #9fe8d6);
    -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .lead { color: #b9c5dc; max-width: 33em; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.hero__points { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-top: 26px; color: #93a2bd; font-size: 14px; }
.hero__points li { position: relative; padding-left: 18px; }
.hero__points li::before {
    content: ""; position: absolute; left: 0; top: 8px; width: 6px; height: 6px;
    border-radius: 50%; background: var(--accent);
}

/* 控制台示意 */
.hero__visual { position: relative; }
.mock {
    position: relative; padding: 16px; border-radius: var(--radius-lg);
    background: linear-gradient(180deg, rgba(255, 255, 255, .12), rgba(255, 255, 255, .04));
    border: 1px solid rgba(255, 255, 255, .16);
    box-shadow: 0 40px 90px -40px rgba(0, 0, 0, .85);
    backdrop-filter: blur(6px);
}
.mock__bar { display: flex; align-items: center; gap: 6px; padding: 2px 4px 14px; color: #9fb0cc; font-size: 12px; }
.mock__bar i { width: 8px; height: 8px; border-radius: 50%; background: rgba(255, 255, 255, .28); }
.mock__bar span { margin-left: 8px; }
.mock__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.mock__kpi {
    padding: 12px; border-radius: 12px; background: rgba(8, 14, 28, .55);
    border: 1px solid rgba(255, 255, 255, .08);
}
.mock__kpi b { display: block; font-size: 18px; letter-spacing: -.02em; }
.mock__kpi span { display: block; color: #8fa0bd; font-size: 12px; margin-top: 2px; }
.mock__kpi em { font-size: 11px; color: #8fa0bd; }
.mock__kpi em.up { color: #4fe3b8; }
.mock__rows { margin-top: 10px; display: grid; gap: 6px; }
.mock__row {
    display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 10px;
    padding: 10px 12px; border-radius: 10px; background: rgba(8, 14, 28, .45);
    border: 1px solid rgba(255, 255, 255, .06);
}
.mock__row b { display: block; font-size: 13px; font-weight: 600; }
.mock__row span { font-size: 11px; color: #8b9cb9; }
.mock__row em { font-size: 13px; color: #dfe8f8; }
.mock__foot {
    display: flex; align-items: center; justify-content: space-between; margin-top: 12px;
    padding: 10px 12px; border-radius: 10px; color: #93a5c2; font-size: 12px;
    background: rgba(255, 255, 255, .05);
}
.dot { width: 8px; height: 8px; border-radius: 50%; }
.dot--blue { background: #5f83ff; }
.dot--green { background: #38d6a8; }
.dot--violet { background: #a98bff; }

.mock__float {
    position: absolute; padding: 8px 14px; border-radius: 10px; font-size: 12px;
    background: #fff; color: var(--text); box-shadow: var(--shadow-2);
}
.mock__float b { color: var(--brand); }
.mock__float--a { top: -14px; right: 18px; }
.mock__float--b { bottom: -16px; left: -18px; }

.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; border-top: 1px solid rgba(255, 255, 255, .1); }
.stats .stat { padding: 26px 8px 30px; }
.stats dt { font-size: clamp(22px, 2.6vw, 30px); font-weight: 700; letter-spacing: -.02em; }
.stats dd { margin-top: 4px; color: #93a2bd; font-size: 14px; }

/* ---------- 版块 ---------- */
.section { padding: 92px 0; }
.section--soft { background: var(--soft); }
.section--top { padding-top: 56px; }
.section--dark { background: radial-gradient(90% 120% at 80% 0%, #16244a 0%, #0a1120 60%); color: #fff; }

.sec-head { max-width: 720px; margin: 0 auto 48px; text-align: center; }
.sec-head h2 { font-size: clamp(26px, 3vw, 38px); margin-bottom: 14px; }
.sec-head p { color: var(--muted); font-size: 17px; }
.sec-head--left { margin-left: 0; text-align: left; }
.section--dark .sec-head p { color: #a9b6cd; }

.cards { display: grid; gap: 20px; }
.cards--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cards--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.card {
    position: relative; display: flex; flex-direction: column; gap: 12px;
    padding: 26px; border-radius: var(--radius); background: #fff;
    border: 1px solid var(--line); box-shadow: var(--shadow-1);
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.card:hover { transform: translateY(-3px); border-color: #d3dcee; box-shadow: var(--shadow-2); }
.card h3 { font-size: 19px; }
.card p { color: var(--muted); font-size: 15px; }
.card--link { cursor: pointer; }
.card--link .link { margin-top: auto; }
.card--tall { min-height: 100%; }
.card__icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 44px; height: 44px; border-radius: 12px;
    background: #eef3ff; color: var(--brand);
}
.card__icon svg { width: 24px; height: 24px; }
.card__badge {
    position: absolute; top: 22px; right: 22px; padding: 3px 9px; border-radius: 999px;
    background: #f2f5fd; color: #5a6b8c; font-size: 11px; font-weight: 600;
}

.ticks { display: grid; gap: 7px; margin: 4px 0 8px; }
.ticks li { position: relative; padding-left: 22px; color: #3f4b63; font-size: 14px; }
.ticks li::before {
    content: ""; position: absolute; left: 2px; top: 7px; width: 10px; height: 6px;
    border-left: 2px solid var(--accent); border-bottom: 2px solid var(--accent);
    transform: rotate(-45deg);
}

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.chips li { padding: 5px 12px; border-radius: 999px; background: #f0f4fd; color: #465a7d; font-size: 13px; }

/* 步骤 */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: step; }
.steps--3 { grid-template-columns: repeat(3, 1fr); }
.step { position: relative; padding: 26px 22px; border-radius: var(--radius); background: #fff; border: 1px solid var(--line); }
.step__no { display: block; font-size: 13px; font-weight: 700; color: var(--brand); letter-spacing: .1em; margin-bottom: 12px; }
.step h3 { font-size: 18px; margin-bottom: 8px; }
.step p { color: var(--muted); font-size: 14.5px; }

/* 深色版块 */
.why { display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; align-items: start; }
.why__copy h2 { font-size: clamp(26px, 3vw, 36px); margin-bottom: 16px; }
.why__copy p { color: #a9b6cd; margin-bottom: 24px; }
.why__list { display: grid; gap: 18px; }
.why__list li { padding: 20px 22px; border-radius: var(--radius); background: rgba(255, 255, 255, .05); border: 1px solid rgba(255, 255, 255, .1); }
.why__list b { display: block; margin-bottom: 6px; font-size: 16px; }
.why__list span { color: #a9b6cd; font-size: 14.5px; }

/* 证言 */
.quotes { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.quote {
    margin: 0; padding: 30px; border-radius: var(--radius);
    background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow-1);
}
.quote blockquote { margin: 0 0 22px; font-size: 17px; line-height: 1.8; color: #2b3648; }
.quote blockquote::before { content: "「"; color: var(--brand); font-weight: 700; }
.quote blockquote::after { content: "」"; color: var(--brand); font-weight: 700; }
.quote figcaption b { display: block; font-size: 15px; }
.quote figcaption span { color: var(--muted); font-size: 13.5px; }

/* 定价 */
.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; align-items: stretch; }
.plans--teaser { align-items: start; }
.plan {
    position: relative; display: flex; flex-direction: column; padding: 30px;
    border-radius: var(--radius-lg); background: #fff; border: 1px solid var(--line);
    box-shadow: var(--shadow-1);
}
.plan--hot { border-color: #b9caff; box-shadow: 0 30px 70px -40px rgba(43, 92, 255, .55); }
.plan__badge {
    position: absolute; top: -12px; right: 24px; padding: 4px 12px; border-radius: 999px;
    background: var(--brand); color: #fff; font-size: 12px; font-weight: 600;
}
.plan h2, .plan h3 { font-size: 20px; }
.plan__head p { color: var(--muted); font-size: 14px; margin-top: 6px; }
.plan__price { display: flex; align-items: baseline; gap: 2px; margin: 18px 0 4px; font-size: 40px; font-weight: 700; letter-spacing: -.03em; }
.plan__price em { font-size: 20px; font-weight: 600; color: var(--muted); }
.plan__unit { font-size: 14px; font-weight: 500; color: var(--muted); margin-left: 4px; }
.plan__trial { color: var(--muted); font-size: 13px; }
.plan__list { display: grid; gap: 10px; margin: 22px 0 26px; }
.plan__list li { position: relative; padding-left: 24px; font-size: 14.5px; color: #3f4b63; }
.plan__list li::before {
    content: ""; position: absolute; left: 3px; top: 8px; width: 9px; height: 5px;
    border-left: 2px solid var(--brand); border-bottom: 2px solid var(--brand); transform: rotate(-45deg);
}
.plan .btn { margin-top: auto; }
.plans__more { text-align: center; margin-top: 26px; }

.toggle { display: inline-flex; gap: 4px; margin-top: 26px; padding: 5px; border-radius: 999px; background: #eef2fb; }
.toggle__btn {
    display: inline-flex; align-items: center; gap: 6px; padding: 9px 20px;
    border: 0; border-radius: 999px; background: transparent; cursor: pointer;
    font-size: 14px; font-weight: 600; color: #55627a;
}
.toggle__btn.is-on { background: #fff; color: var(--text); box-shadow: var(--shadow-1); }
.toggle__btn em { color: var(--accent); font-size: 12px; font-weight: 600; }

.note { margin-top: 26px; padding: 18px 22px; border-radius: var(--radius); background: var(--soft); border: 1px dashed #ccd7ea; }
.note p { color: var(--muted); font-size: 14px; }

/* FAQ */
.faq-wrap { max-width: 900px; }
.faq-list { display: grid; gap: 10px; }
.faq { padding: 18px 22px; border-radius: var(--radius); background: #fff; border: 1px solid var(--line); }
.faq summary { position: relative; cursor: pointer; list-style: none; padding-right: 34px; font-weight: 600; font-size: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
    content: "+"; position: absolute; right: 0; top: -2px; width: 24px; height: 24px;
    display: grid; place-items: center; border-radius: 50%; background: #eef2fb; color: var(--brand); font-size: 16px;
}
.faq[open] summary::after { content: "−"; }
.faq p { margin-top: 12px; color: var(--muted); font-size: 15px; }

/* ---------- 页头 ---------- */
.page-head { padding: 56px 0 48px; background: linear-gradient(180deg, #f7f9fe, #fff); border-bottom: 1px solid #eef2f9; }
.page-head h1 { font-size: clamp(28px, 3.4vw, 42px); margin-bottom: 16px; }
.page-head .lead { max-width: 46em; }
.page-head--center { text-align: center; }
.page-head--center .lead { margin: 0 auto; }
.page-head--tight { padding-bottom: 8px; }
.page-head--product { background: radial-gradient(120% 140% at 90% 0%, #eef3ff 0%, #f8fafe 45%, #fff 100%); }

.crumbs { display: flex; align-items: center; gap: 8px; margin-bottom: 22px; font-size: 13px; color: var(--muted); }
.crumbs a { color: var(--muted); }
.crumbs a:hover { color: var(--brand); }
.crumbs em { color: var(--text); font-weight: 500; }
.crumbs--center { justify-content: center; }

/* 产品详情头部 */
.pd-head { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.pd-head__copy { display: grid; align-content: start; }
.pd-head__sub { margin: 6px 0 12px; color: var(--brand); font-weight: 600; font-size: 16px; }
.pd-head__points { display: grid; gap: 10px; padding: 26px; border-radius: var(--radius-lg); background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow-1); }
.pd-head__points li { position: relative; padding-left: 26px; font-size: 15px; }
.pd-head__points li::before {
    content: ""; position: absolute; left: 2px; top: 7px; width: 11px; height: 6px;
    border-left: 2px solid var(--accent); border-bottom: 2px solid var(--accent); transform: rotate(-45deg);
}

/* ---------- 客户案例 ---------- */
.cases { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.cases--3 { align-items: stretch; }
.case-card {
    display: flex; flex-direction: column; overflow: hidden;
    border-radius: var(--radius-lg); background: #fff; border: 1px solid var(--line);
    box-shadow: var(--shadow-1); transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.case-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-2); border-color: #d3dcee; }
.case-card__media {
    position: relative; aspect-ratio: 16 / 9; overflow: hidden;
    background: linear-gradient(135deg, #1b2f63, #2b5cff 55%, #4fd7b4);
}
.case-card__media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.case-card__placeholder {
    position: absolute; inset: 0; display: grid; place-items: center;
    color: rgba(255, 255, 255, .92); font-weight: 700; letter-spacing: .08em; font-size: 15px;
    background: radial-gradient(80% 80% at 20% 10%, rgba(255, 255, 255, .28), transparent 60%);
}
.case-card__body { display: flex; flex-direction: column; gap: 8px; padding: 20px 22px 24px; }
.case-card__tag { align-self: flex-start; padding: 3px 10px; border-radius: 999px; background: #eef3ff; color: var(--brand); font-size: 12px; font-weight: 600; }
.case-card__body h2, .case-card__body h3 { font-size: 18px; }
.case-card__body p { color: var(--muted); font-size: 14.5px; }
.case-card__metrics { display: flex; gap: 22px; margin-top: 8px; padding-top: 14px; border-top: 1px solid var(--line); }
.case-card__metrics b { display: block; font-size: 18px; letter-spacing: -.02em; }
.case-card__metrics span { color: var(--muted); font-size: 12px; }

.pager { display: flex; align-items: center; justify-content: center; gap: 16px; margin-top: 40px; }
.pager__btn { padding: 9px 18px; border-radius: 999px; border: 1px solid var(--line); background: #fff; font-size: 14px; font-weight: 500; }
.pager__btn:hover { border-color: var(--brand-2); color: var(--brand); }
.pager__info { color: var(--muted); font-size: 13.5px; }

.empty { padding: 70px 24px; text-align: center; border-radius: var(--radius-lg); background: var(--soft); border: 1px dashed #ccd7ea; }
.empty h2 { font-size: 22px; margin-bottom: 8px; }
.empty p { color: var(--muted); margin-bottom: 22px; }

/* ---------- 案例详情（长文） ---------- */
.article__head { padding: 40px 0 36px; background: linear-gradient(180deg, #f7f9fe, #fff); border-bottom: 1px solid #eef2f9; }
.article__head h1 { font-size: clamp(26px, 3.2vw, 40px); margin: 10px 0 12px; }
.article__sub { color: var(--brand); font-weight: 600; margin-bottom: 10px; }
.article__head .lead { max-width: 46em; }
.article__cover { margin: 30px 0 0; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--line); }
.article__cover img { display: block; width: 100%; height: auto; }

.metrics-band {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 18px;
    margin-top: 28px; padding: 22px 24px; border-radius: var(--radius);
    background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow-1);
}
.metrics-band dt { font-size: 26px; font-weight: 700; letter-spacing: -.02em; }
.metrics-band dd { color: var(--muted); font-size: 13.5px; margin-top: 2px; }

.article__layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 48px; padding: 52px 24px 0; align-items: start; }
.article__body { max-width: 760px; }
.article__body h2 { font-size: 24px; margin: 34px 0 12px; }
.article__body h3 { font-size: 19px; margin: 26px 0 10px; }
.article__body p { margin-bottom: 16px; color: #3d4a61; font-size: 16.5px; line-height: 1.85; }
.article__body ul, .article__body ol { margin: 0 0 18px; padding-left: 22px; list-style: disc; }
.article__body ol { list-style: decimal; }
.article__body li { margin-bottom: 8px; color: #3d4a61; font-size: 16px; line-height: 1.8; }
.article__body img { max-width: 100%; height: auto; border-radius: 12px; margin: 10px 0 18px; }
.article__body a { color: var(--brand); text-decoration: underline; text-underline-offset: 3px; }
.article__body blockquote {
    margin: 0 0 18px; padding: 14px 20px; border-left: 3px solid var(--brand-2);
    background: var(--soft); color: #46536b; border-radius: 0 12px 12px 0;
}
.article__body table { width: 100%; border-collapse: collapse; margin-bottom: 18px; }
.article__body th, .article__body td { padding: 10px 12px; border: 1px solid var(--line); font-size: 15px; text-align: left; }
.article__body th { background: var(--soft); }
.article__placeholder { color: var(--muted); }
.article__tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--line); }
.article__tags span { padding: 4px 12px; border-radius: 999px; background: var(--soft); color: var(--muted); font-size: 13px; }

.article__aside { position: sticky; top: 92px; }
.aside-card { padding: 24px; border-radius: var(--radius-lg); background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow-1); }
.aside-card h2 { font-size: 18px; margin-bottom: 8px; }
.aside-card p { color: var(--muted); font-size: 14px; margin-bottom: 18px; }
.aside-card .btn + .btn { margin-top: 10px; }

@media (max-width: 1080px) {
    .cases { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .article__layout { grid-template-columns: 1fr; padding-top: 36px; gap: 32px; }
    .article__aside { position: static; }
}

@media (max-width: 900px) {
    .cases { grid-template-columns: 1fr; }
    .article__head { padding: 28px 0 26px; }
}

/* ---------- 解决方案 ---------- */
.solutions { display: grid; gap: 20px; }
.solution {
    display: grid; grid-template-columns: 1fr 1fr; gap: 24px 40px; align-items: start;
    padding: 34px; border-radius: var(--radius-lg); background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow-1);
}
.solution__head h2 { font-size: 24px; }
.solution__head p { color: var(--brand); font-weight: 600; margin-top: 6px; }
.solution__summary { grid-column: 1 / -1; color: var(--muted); font-size: 15.5px; }
.solution__metrics { display: flex; gap: 34px; }
.solution__metrics b { display: block; font-size: 26px; letter-spacing: -.02em; }
.solution__metrics span { color: var(--muted); font-size: 13.5px; }
.solution .link { justify-self: start; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.split__col { display: grid; align-content: start; }
.split__title { font-size: 22px; margin-bottom: 20px; }
.pains { display: grid; gap: 12px; }
.pains li { padding: 16px 18px; border-radius: 12px; background: #fff6f5; border: 1px solid #ffe0dc; color: #7c3f36; font-size: 15px; }
.gains { display: grid; gap: 14px; }
.gains li { padding: 16px 18px; border-radius: 12px; background: #f2fbf8; border: 1px solid #d3f0e6; }
.gains b { display: block; margin-bottom: 4px; }
.gains span { color: #4a5a52; font-size: 14.5px; }

.stats--dark { margin-top: 12px; border-top-color: rgba(255, 255, 255, .12); }
.stats--dark dt { color: #fff; }

/* ---------- 关于 ---------- */
.about-intro { display: grid; gap: 14px; max-width: 820px; }
.about-intro p { color: var(--muted); font-size: 16.5px; line-height: 1.85; }

.timeline { display: grid; gap: 0; max-width: 820px; }
.timeline li { display: grid; grid-template-columns: 90px 1fr; gap: 24px; padding: 20px 0; border-top: 1px solid var(--line); }
.timeline li:last-child { border-bottom: 1px solid var(--line); }
.timeline__year { font-weight: 700; color: var(--brand); font-size: 17px; }
.timeline p { color: var(--muted); }

.contact-strip {
    display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap;
    padding: 34px; border-radius: var(--radius-lg); background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow-1);
}
.contact-strip h2 { font-size: 22px; margin-bottom: 6px; }
.contact-strip p { color: var(--muted); }
.contact-strip__actions { display: flex; gap: 10px; }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 44px; align-items: start; }
.contact-info h2 { font-size: 20px; margin-bottom: 20px; }
.contact-info dl { display: grid; gap: 18px; }
.contact-info dt { color: var(--muted); font-size: 13px; margin-bottom: 2px; }
.contact-info dd { font-size: 15.5px; font-weight: 500; }
.contact-info dd a:hover { color: var(--brand); }
.contact-info__tip { margin-top: 24px; padding: 16px; border-radius: 12px; background: var(--soft); color: var(--muted); font-size: 13.5px; }

.contact-form-wrap { padding: 30px; border-radius: var(--radius-lg); background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow-1); }
.alert { margin-bottom: 18px; padding: 13px 16px; border-radius: 12px; font-size: 14.5px; }
.alert--ok { background: #eefaf5; border: 1px solid #c9ecdf; color: #0a6a51; }
.alert--err { background: #fff5f4; border: 1px solid #ffdad5; color: #8a3b31; }

.lead-form { display: grid; gap: 16px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: grid; gap: 7px; }
.field > span { font-size: 13.5px; font-weight: 600; color: #3c4a63; }
.field > span i { color: #e0524b; font-style: normal; }
.field input, .field select, .field textarea {
    width: 100%; padding: 12px 14px; border-radius: 10px;
    border: 1px solid #dbe3f0; background: #fff; color: var(--text);
    font-family: inherit; font-size: 15px; transition: border-color .15s ease, box-shadow .15s ease;
}
.field textarea { resize: vertical; min-height: 96px; }
.field input::placeholder, .field textarea::placeholder { color: #9aa7bd; }
.field input:focus, .field select:focus, .field textarea:focus {
    outline: none; border-color: var(--brand-2); box-shadow: 0 0 0 3px rgba(43, 92, 255, .12);
}
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.lead-form__note { color: var(--muted); font-size: 12.5px; text-align: center; }
.lead-form__note a { color: var(--brand); }

/* ---------- 法律 ---------- */
.legal { max-width: 860px; }
.legal h1 { font-size: clamp(26px, 3vw, 34px); margin-bottom: 6px; }
.legal__meta { color: var(--muted); font-size: 13.5px; margin-bottom: 34px; }
.legal__block { margin-bottom: 30px; }
.legal__block h2 { font-size: 18px; margin-bottom: 10px; }
.legal__block p { color: #46536b; font-size: 15.5px; line-height: 1.85; margin-bottom: 10px; }
.legal__foot { margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.legal__foot a { color: var(--brand); }

/* ---------- CTA ---------- */
.cta { padding: 0 0 92px; }
.cta__inner {
    display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap;
    padding: 40px 44px; border-radius: var(--radius-lg); color: #fff;
    background: radial-gradient(120% 180% at 100% 0%, #2f5dfa 0%, #1b3bb0 50%, #16276d 100%);
    box-shadow: 0 40px 80px -50px rgba(27, 59, 176, .9);
}
.cta__copy h2 { font-size: clamp(22px, 2.6vw, 30px); margin-bottom: 8px; }
.cta__copy p { color: #cdd8ff; font-size: 15px; }
.cta__actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- 页脚 ---------- */
.ft { padding: 64px 0 26px; background: #070d1a; color: #96a3bb; }
.ft__top { display: grid; grid-template-columns: 1.1fr 1.9fr; gap: 48px; padding-bottom: 40px; border-bottom: 1px solid rgba(255, 255, 255, .08); }
.logo--light .logo__text { color: #fff; }
/* 深色页脚：把 LOGO 反相成白色剪影，避免深色 LOGO 在深底上不可见 */
.logo--light .logo__img { filter: brightness(0) invert(1); opacity: .95; }
.ft__brand { display: grid; align-content: start; gap: 4px; }
.ft__slogan { margin: 16px 0 18px; font-size: 14.5px; max-width: 30em; color: #96a3bb; }
.ft__contact { display: flex; flex-wrap: wrap; gap: 8px 20px; font-size: 14.5px; }
.ft__contact a { color: #dfe7f7; }
.ft__contact a:hover { color: #fff; }
.ft__addr { margin-top: 10px; font-size: 13px; color: #7e8ba3; }

.ft__cols { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.ft__col { display: grid; align-content: start; gap: 10px; }
.ft__col h4 { font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: #fff; margin-bottom: 4px; }
.ft__col a { font-size: 14px; color: #96a3bb; }
.ft__col a:hover { color: #fff; }
.ft__col--cta p { font-size: 13px; }
.ft__col--cta .btn { margin-top: 6px; }

.ft__bottom { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-top: 22px; font-size: 12.5px; color: #6f7c94; }
.ft__icp { display: inline-flex; align-items: center; gap: 10px; }
.ft__icp a { color: #8a97ae; }
.ft__icp em { color: #3c475c; }

/* ---------- 错误页 ---------- */
.plain { display: flex; flex-direction: column; min-height: 100vh; background: var(--soft); }
.plain__hd { display: flex; align-items: center; justify-content: space-between; padding: 20px 24px; }
.plain__back { font-size: 14px; color: var(--muted); }
.plain__back:hover { color: var(--brand); }
.plain__main { flex: 1; display: grid; place-items: center; padding: 40px 24px 72px; }
.plain__ft { padding: 18px 24px; text-align: center; color: #8b98ae; font-size: 12.5px; }

.err { width: 100%; max-width: 620px; padding: 40px; border-radius: var(--radius-lg); background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow-1); text-align: center; }
.err__code { display: block; font-size: 64px; font-weight: 800; letter-spacing: -.04em; line-height: 1; background: linear-gradient(120deg, var(--brand), #7ba0ff 60%, #4fd7b4); -webkit-background-clip: text; background-clip: text; color: transparent; }
.err__code + h1 { margin: 14px 0 10px; font-size: 22px; }
.err p { color: var(--muted); font-size: 15px; }
.err__actions { display: flex; justify-content: center; gap: 12px; margin-top: 26px; flex-wrap: wrap; }
.err__links { display: flex; justify-content: center; gap: 22px; margin-top: 26px; padding-top: 20px; border-top: 1px solid var(--line); font-size: 13.5px; color: var(--muted); }
.err__links a:hover { color: var(--brand); }

/* ---------- 动效 ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .reveal { opacity: 1; transform: none; transition: none; }
    .btn, .card { transition: none; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
    .hero__inner { grid-template-columns: 1fr; gap: 40px; }
    .hero__visual { max-width: 560px; }
    .why { grid-template-columns: 1fr; gap: 32px; }
    .pd-head { grid-template-columns: 1fr; gap: 28px; }
    .solution { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .ft__top { grid-template-columns: 1fr; }
    .ft__cols { grid-template-columns: repeat(2, 1fr); gap: 24px 20px; }
}

@media (max-width: 900px) {
    .nav, .hd__actions { display: none; }
    .burger { display: block; }
    .cards--3, .cards--2, .steps, .steps--3, .plans, .quotes, .split { grid-template-columns: 1fr; }
    .stats { grid-template-columns: repeat(2, 1fr); }
    .section { padding: 64px 0; }
    .hero { padding-top: 44px; }
    .cta { padding-bottom: 64px; }
    .cta__inner { padding: 30px; }
    .field-row { grid-template-columns: 1fr; }
    .solution__metrics { gap: 26px; }
}

@media (max-width: 560px) {
    .wrap { padding: 0 18px; }
    .logo__img { height: 30px; max-width: 150px; }
    .hero__copy h1 { font-size: 30px; }
    .lead { font-size: 16px; }
    .plan__price { font-size: 34px; }
    .err { padding: 28px 20px; }
    .err__code { font-size: 48px; }
    .timeline li { grid-template-columns: 64px 1fr; gap: 14px; }
    .ft__cols { grid-template-columns: 1fr 1fr; }
    .mock__float--b { left: 0; }
}