/* =========================================================
   宸曜盛联 官方网站  统一样式表
   适配：公安联网备案审核 / App Store 审核（响应式、移动端友好）
   ========================================================= */

:root {
    --ink: #1B1814;
    --ink-2: #2A2418;
    --ink-3: #3A3530;
    --muted: #8A8174;
    --line: #E8E1D5;
    --cream: #F4EFE6;
    --paper: #FFFEFB;
    --gold: #C9A55A;
    --gold-deep: #8F6F2E;
    --gold-soft: #F5EEDF;
    --radius: 14px;
    --shadow: 0 2px 16px rgba(27, 24, 20, .06);
    --shadow-lg: 0 12px 40px rgba(27, 24, 20, .10);
    --wrap: 1120px;
}

* { box-sizing: border-box; }

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

body {
    margin: 0;
    background: var(--paper);
    color: var(--ink-3);
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
                 "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
    font-size: 15px;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; border: 0; }

a { color: var(--gold-deep); text-decoration: none; }
a:hover { color: var(--gold); }

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

/* ---------- 顶部导航 ---------- */
.nav {
    position: sticky; top: 0; z-index: 50;
    background: rgba(255, 254, 251, .94);
    backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--line);
}
.nav-inner {
    max-width: var(--wrap); margin: 0 auto; padding: 0 24px;
    height: 66px; display: flex; align-items: center; gap: 14px;
}
.brand { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.brand img { width: 34px; height: 34px; border-radius: 8px; }
.brand-stack { display: flex; flex-direction: column; line-height: 1.28; }
.brand-txt { font-size: 17px; font-weight: 700; color: var(--ink); letter-spacing: .5px; }
.brand-sub { font-size: 11px; color: var(--muted); letter-spacing: 1.6px; text-transform: uppercase; }
.nav-links { margin-left: auto; display: flex; align-items: center; gap: 26px; }
.nav-links a { color: var(--ink-3); font-size: 14.5px; }
.nav-links a:hover { color: var(--gold-deep); }
.nav-links a.active { color: var(--ink); font-weight: 600; }
.nav-toggle {
    display: none; margin-left: auto; width: 40px; height: 40px;
    border: 1px solid var(--line); border-radius: 10px; background: #fff;
    cursor: pointer; font-size: 18px; line-height: 1; color: var(--ink);
}

/* ---------- 按钮 ---------- */
.btn {
    display: inline-block; padding: 11px 26px; border-radius: 999px;
    font-size: 14.5px; font-weight: 600; transition: .22s;
    border: 1px solid transparent; cursor: pointer;
}
.btn-gold { background: var(--gold); color: #fff; box-shadow: 0 6px 18px rgba(201, 165, 90, .32); }
.btn-gold:hover { background: var(--gold-deep); color: #fff; transform: translateY(-1px); }
.btn-ghost { border-color: rgba(255, 255, 255, .38); color: #fff; }
.btn-ghost:hover { background: rgba(255, 255, 255, .12); color: #fff; }
.btn-line { border-color: var(--line); color: var(--ink-3); background: #fff; }
.btn-line:hover { border-color: var(--gold); color: var(--gold-deep); }

/* ---------- 首页 Hero ---------- */
.hero {
    position: relative; overflow: hidden;
    background: linear-gradient(155deg, #1B1814 0%, #2A2418 52%, #3D321F 100%);
    color: #fff; padding: 84px 0 96px;
}
.hero::after {
    content: ""; position: absolute; right: -140px; top: -120px;
    width: 460px; height: 460px; border-radius: 50%;
    background: radial-gradient(circle, rgba(201, 165, 90, .34) 0%, rgba(201, 165, 90, 0) 68%);
}
.hero-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
.hero-tag {
    display: inline-block; padding: 5px 14px; border-radius: 999px;
    background: rgba(201, 165, 90, .16); border: 1px solid rgba(201, 165, 90, .42);
    color: var(--gold); font-size: 12.5px; letter-spacing: .6px; margin-bottom: 20px;
}
.hero h1 { font-size: 40px; line-height: 1.32; margin: 0 0 18px; font-weight: 700; letter-spacing: -.5px; }
.hero h1 em { font-style: normal; color: var(--gold); }
.hero p { font-size: 16px; color: rgba(255, 255, 255, .76); margin: 0 0 32px; max-width: 540px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.hero-panel {
    background: rgba(255, 255, 255, .06); border: 1px solid rgba(201, 165, 90, .24);
    border-radius: 20px; padding: 22px;
}
.hero-panel-row {
    display: flex; align-items: center; gap: 14px; padding: 13px 4px;
    border-bottom: 1px dashed rgba(255, 255, 255, .12);
}
.hero-panel-row:last-child { border-bottom: 0; }
.hero-panel-row b { color: var(--gold); font-size: 20px; min-width: 78px; font-weight: 700; }
.hero-panel-row span { color: rgba(255, 255, 255, .72); font-size: 13.5px; }

/* ---------- 通用区块 ---------- */
.section { padding: 76px 0; }
.section.alt { background: var(--cream); }
.sec-head { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.sec-head h2 { font-size: 28px; color: var(--ink); margin: 0 0 12px; font-weight: 700; letter-spacing: -.3px; }
.sec-head p { color: var(--muted); margin: 0; font-size: 15px; }
.sec-head .kicker {
    display: block; color: var(--gold-deep); font-size: 12.5px; font-weight: 700;
    letter-spacing: 2.4px; text-transform: uppercase; margin-bottom: 10px;
}

.grid { display: grid; gap: 20px; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }

.card {
    background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
    padding: 26px 24px; box-shadow: var(--shadow); transition: .24s;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: #DFD3BC; }
.card .ico {
    width: 42px; height: 42px; border-radius: 11px; background: var(--gold-soft);
    color: var(--gold-deep); display: flex; align-items: center; justify-content: center;
    font-size: 19px; margin-bottom: 16px;
}
.card h3 { font-size: 16.5px; color: var(--ink); margin: 0 0 8px; font-weight: 600; }
.card p { margin: 0; font-size: 14px; color: var(--muted); line-height: 1.75; }

/* ---------- 流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: s; }
.step {
    position: relative; background: #fff; border: 1px solid var(--line);
    border-radius: var(--radius); padding: 28px 22px 24px;
}
.step::before {
    counter-increment: s; content: "0" counter(s);
    display: block; font-size: 26px; font-weight: 800; color: var(--gold);
    letter-spacing: -1px; margin-bottom: 10px; opacity: .85;
}
.step h4 { margin: 0 0 8px; font-size: 16px; color: var(--ink); font-weight: 600; }
.step p { margin: 0; font-size: 13.5px; color: var(--muted); }

/* ---------- 合规说明 ---------- */
.comply-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px 32px; margin: 0; padding: 0; list-style: none; }
.comply-list li { position: relative; padding-left: 30px; font-size: 14.5px; color: var(--ink-3); }
.comply-list li::before {
    content: "✓"; position: absolute; left: 0; top: 1px;
    width: 20px; height: 20px; border-radius: 50%; background: var(--gold-soft);
    color: var(--gold-deep); font-size: 12px; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
}
.comply-list li b { color: var(--ink); }

/* ---------- 内容页（协议/政策） ---------- */
.page-head {
    background: linear-gradient(160deg, #1B1814 0%, #2A2418 100%);
    color: #fff; padding: 52px 0 46px;
}
.page-head h1 { margin: 0 0 10px; font-size: 27px; font-weight: 700; }
.page-head p { margin: 0; color: rgba(255, 255, 255, .62); font-size: 13.5px; }

.doc { padding: 52px 0 80px; }
.doc-layout { display: grid; grid-template-columns: 210px 1fr; gap: 48px; align-items: start; }
.doc-toc {
    position: sticky; top: 90px; border-left: 2px solid var(--line);
    padding-left: 16px; font-size: 13.5px;
}
.doc-toc strong { display: block; color: var(--muted); font-size: 12px; letter-spacing: 1.6px; text-transform: uppercase; margin-bottom: 12px; font-weight: 700; }
.doc-toc a { display: block; color: var(--muted); padding: 4px 0; }
.doc-toc a:hover { color: var(--gold-deep); }

.doc-body { max-width: 820px; }
.doc-body h2 {
    font-size: 18px; color: var(--ink); margin: 40px 0 14px; font-weight: 700;
    padding-bottom: 10px; border-bottom: 1px solid var(--line);
}
.doc-body h2:first-child { margin-top: 0; }
.doc-body h3 { font-size: 15.5px; color: var(--ink-2); margin: 26px 0 10px; font-weight: 600; }
.doc-body p { margin: 0 0 13px; }
.doc-body ul, .doc-body ol { margin: 0 0 14px; padding-left: 22px; }
.doc-body li { margin-bottom: 8px; }
.doc-body .note {
    background: var(--gold-soft); border-left: 3px solid var(--gold);
    border-radius: 0 10px 10px 0; padding: 14px 18px; margin: 18px 0;
    font-size: 14px; color: var(--ink-2);
}
.doc-body table { width: 100%; border-collapse: collapse; margin: 16px 0 22px; font-size: 13.5px; }
.doc-body th, .doc-body td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; vertical-align: top; }
.doc-body th { background: var(--cream); color: var(--ink); font-weight: 600; }
.doc-body td { color: var(--ink-3); }

/* ---------- 联系方式 ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.contact-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.contact-card .label { font-size: 12.5px; color: var(--muted); letter-spacing: 1.2px; margin-bottom: 8px; font-weight: 700; }
.contact-card .value { font-size: 16px; color: var(--ink); font-weight: 600; word-break: break-all; }
.contact-card .hint { font-size: 12.5px; color: var(--muted); margin-top: 6px; }

/* ---------- 下载 ---------- */
.dl-panel {
    background: linear-gradient(155deg, #1B1814 0%, #2A2418 100%);
    border-radius: 22px; padding: 44px; color: #fff;
    display: grid; grid-template-columns: 1.2fr .8fr; gap: 40px; align-items: center;
}
.dl-panel h3 { font-size: 24px; margin: 0 0 12px; font-weight: 700; }
.dl-panel p { color: rgba(255, 255, 255, .7); margin: 0 0 24px; font-size: 14.5px; }
.qr-box { text-align: center; }
.qr-box .qr {
    width: 138px; height: 138px; margin: 0 auto 12px; border-radius: 12px;
    background: rgba(255, 255, 255, .08); border: 1px dashed rgba(201, 165, 90, .5);
    display: flex; align-items: center; justify-content: center;
    color: var(--gold); font-size: 12px; line-height: 1.6; padding: 8px; text-align: center;
}
.qr-box span { font-size: 12.5px; color: rgba(255, 255, 255, .55); }

/* ---------- FAQ ---------- */
.faq { max-width: 840px; margin: 0 auto; }
.faq details {
    background: #fff; border: 1px solid var(--line); border-radius: 12px;
    padding: 0 20px; margin-bottom: 12px;
}
.faq summary {
    cursor: pointer; padding: 17px 0; font-size: 15px; font-weight: 600;
    color: var(--ink); list-style: none; position: relative; padding-right: 28px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
    content: "+"; position: absolute; right: 2px; top: 15px;
    color: var(--gold); font-size: 20px; font-weight: 400;
}
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 0 0 18px; font-size: 14px; color: var(--muted); }

/* ---------- 页脚 ---------- */
.footer { background: #1B1814; color: rgba(255, 255, 255, .58); padding: 56px 0 30px; font-size: 13.5px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 36px; }
.footer h4 { color: #fff; font-size: 14px; margin: 0 0 16px; font-weight: 600; letter-spacing: .4px; }
.footer a { color: rgba(255, 255, 255, .58); display: block; padding: 4px 0; }
.footer a:hover { color: var(--gold); }
.footer .brand-txt { color: #fff; }
.footer .brand-sub { color: rgba(255, 255, 255, .4); }
.footer-brand-desc { margin: 14px 0 0; font-size: 13px; line-height: 1.8; color: rgba(255, 255, 255, .5); }
.footer-info { border-top: 1px solid rgba(255, 255, 255, .1); margin-top: 40px; padding-top: 24px; font-size: 13px; line-height: 2; }
.footer-info .entity { color: rgba(255, 255, 255, .78); }
.footer-info a { display: inline; padding: 0; }
.footer-copy { color: rgba(255, 255, 255, .38); font-size: 12.5px; margin-top: 10px; }

/* ---------- 备案占位符提示（上线前替换后此样式可一并删除） ---------- */
.ph {
    background: #FFF3CD; color: #8A5A00; border-bottom: 1px dashed #C9A55A;
    padding: 0 4px; border-radius: 3px; font-style: normal; white-space: nowrap;
}

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
    .hero-grid, .dl-panel { grid-template-columns: 1fr; gap: 34px; }
    .g4, .steps { grid-template-columns: repeat(2, 1fr); }
    .doc-layout { grid-template-columns: 1fr; gap: 26px; }
    .doc-toc { position: static; border-left: 0; border-top: 2px solid var(--line); padding: 14px 0 0; }
    .doc-toc a { display: inline-block; margin-right: 14px; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
    body { font-size: 14.5px; }
    .hero { padding: 56px 0 64px; }
    .hero h1 { font-size: 29px; }
    .section { padding: 52px 0; }
    .sec-head { margin-bottom: 34px; }
    .sec-head h2 { font-size: 22px; }
    .g2, .g3, .g4, .steps, .contact-grid { grid-template-columns: 1fr; }
    .comply-list { grid-template-columns: 1fr; }
    .dl-panel { padding: 30px 22px; }
    .nav-links {
        display: none; position: absolute; left: 0; right: 0; top: 66px;
        flex-direction: column; align-items: stretch; gap: 0;
        background: #fff; border-bottom: 1px solid var(--line); padding: 8px 24px 16px;
        box-shadow: 0 12px 24px rgba(0, 0, 0, .06);
    }
    .nav-links.open { display: flex; }
    .nav-links a { padding: 11px 0; border-bottom: 1px solid var(--line); }
    .nav-toggle { display: block; }
    .page-head { padding: 38px 0 34px; }
    .page-head h1 { font-size: 21px; }
    .footer { padding: 44px 0 26px; }
}