/* ============================================================
   欸哎云 AICloud · 官网改版设计系统 v2.0
   Master brand: #1766E5 (沿用原品牌蓝)  /  #00A9C8 (沿用原品牌青)
   子品牌令牌: 灵绘=暗场电光青  小懒=紫罗兰+青  归墟=深渊靛+海绿
   ============================================================ */
:root{
  --ink:#0d1526; --ink-2:#33415c; --muted:#64748f;
  --paper:#ffffff; --mist:#f4f7fc; --mist-2:#eef3fa;
  --line:#e2e8f2; --line-2:#cfd9e8;
  --brand:#1766e5; --brand-600:#0f52c4; --brand-ink:#082866;
  --cyan:#00a9c8; --green:#21b987; --gold:#ffb020; --navy:#071832;
  --linghui:#0b0f1a; --linghui-accent:#38e1ff; --linghui-blue:#2f6bff;
  --xiaolan:#5b21b6; --xiaolan-accent:#0f9ba8;
  --guixu:#0e2a3a; --guixu-accent:#19c2a8;
  --r-s:6px; --r-m:10px; --r-l:16px;
  --shadow-1:0 1px 2px rgba(13,21,38,.06),0 8px 24px rgba(13,21,38,.07);
  --shadow-2:0 2px 6px rgba(13,21,38,.08),0 24px 60px rgba(13,21,38,.12);
  --font-cjk:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-lat:"Manrope","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --wrap:1200px; --gut:24px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
html.no-js .reveal{opacity:1;transform:none}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font-cjk);font-size:15px;line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}
.skip-link{position:fixed;top:10px;left:10px;z-index:100;transform:translateY(-150%);padding:10px 14px;border-radius:6px;background:var(--ink);color:#fff;font-weight:700}
.skip-link:focus{transform:none}
section[id],article[id]{scroll-margin-top:88px}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:0;line-height:1.18}
p{margin:0}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}
.lat{font-family:var(--font-lat)}

/* ---------- 排版刻度 ---------- */
.display{font-size:clamp(40px,4.6vw,64px);line-height:1.06;letter-spacing:0;font-weight:900}
.h2{font-size:clamp(28px,2.6vw,40px);letter-spacing:0}
.h3{font-size:20px}
.lede{font-size:17px;color:var(--ink-2);line-height:1.85}
.eyebrow{display:flex;align-items:center;gap:10px;font-family:var(--font-lat);font-size:12px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:var(--brand)}
.eyebrow::after{content:"";height:1px;width:56px;background:var(--line-2)}
.muted{color:var(--muted)}
.num{font-family:var(--font-lat);font-variant-numeric:tabular-nums}

/* ---------- 头部 / 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.86);backdrop-filter:saturate(1.4) blur(14px);border-bottom:1px solid var(--line)}
.nav-wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gut);height:68px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:10px}
.brand img{height:34px;width:auto}
.brand-txt{display:flex;flex-direction:column;line-height:1.15}
.brand-txt b{font-size:16px;letter-spacing:0}
.brand-txt span{font-size:11px;color:var(--muted);letter-spacing:.08em}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px}
.main-nav > .nav-item{position:relative}
.main-nav a.nav-link{display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 14px;border-radius:8px;font-size:14.5px;font-weight:600;color:var(--ink-2)}
.main-nav a.nav-link:hover{background:var(--mist);color:var(--ink)}
.main-nav a.nav-link.is-active{color:var(--brand)}
.nav-link .caret{width:8px;height:8px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:rotate(45deg) translateY(-2px);opacity:.55;transition:transform .18s}
.nav-item:hover .caret{transform:rotate(225deg) translateY(-2px)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}

/* Mega menu */
.mega{position:absolute;top:calc(100% + 10px);left:50%;transform:translate(-50%,8px);width:880px;background:#fff;border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--shadow-2);padding:22px;display:grid;grid-template-columns:1.25fr 1.25fr .9fr;gap:22px;opacity:0;visibility:hidden;transition:opacity .18s,transform .18s}
.nav-item:hover .mega,.nav-item:focus-within .mega{opacity:1;visibility:visible;transform:translate(-50%,0)}
.mega h4{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-family:var(--font-lat);margin-bottom:10px}
.mega-col{min-width:0}
.mega-item{display:flex;gap:10px;padding:9px 10px;border-radius:10px;align-items:flex-start}
.mega-item:hover{background:var(--mist)}
.mega-item .mi-logo{width:30px;height:30px;border-radius:8px;flex:none;display:grid;place-items:center;font-size:13px;font-weight:800;color:#fff}
.mega-item b{display:block;font-size:13.5px}
.mega-item small{display:block;color:var(--muted);font-size:12px;line-height:1.5}
.mega-item .tag{font-size:10px;font-family:var(--font-lat);font-weight:800;letter-spacing:.06em;padding:1px 6px;border-radius:999px;background:var(--mist-2);color:var(--muted);margin-left:6px;vertical-align:1px}
.mega-rail{background:var(--mist);border-radius:12px;padding:14px}
.mega-rail a{display:block;padding:8px 10px;border-radius:8px;font-size:13px;font-weight:600}
.mega-rail a:hover{background:#fff}
.mega-grid2{display:grid;grid-template-columns:1fr 1fr;gap:2px}
.mega-grid2 a{display:block;padding:8px 10px;border-radius:8px;font-size:13px;color:var(--ink-2)}
.mega-grid2 a:hover{background:var(--mist);color:var(--ink)}
.mega-grid2 a b{font-weight:600}
.mega-grid2 a .p{float:right;color:var(--muted);font-size:11px;font-family:var(--font-lat)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:10px;border:1px solid transparent;font-size:14.5px;font-weight:700;cursor:pointer;transition:transform .15s,box-shadow .15s,background .15s}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px rgba(23,102,229,.28)}
.btn-primary:hover{background:var(--brand-600)}
.btn-ghost{background:#fff;border-color:var(--line-2);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-sm{height:36px;padding:0 16px;font-size:13px;border-radius:8px}
.btn-dark{background:var(--navy);color:#fff}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:14px;color:var(--brand)}
.link-arrow i{font-style:normal;transition:transform .15s}
.link-arrow:hover i{transform:translateX(3px)}

/* ---------- 分区骨架 ---------- */
.section{padding:88px 0}
.section.mist{background:var(--mist)}
.section.navy{background:var(--navy);color:#eaf1fb}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:40px}
.sec-head .t{max-width:640px}
.sec-head h2{margin-top:14px}
.sec-head .lede{margin-top:12px}
.rule{height:1px;background:var(--line)}

/* ---------- Hero ---------- */
.hero{position:relative;padding:76px 0 64px;background:
  radial-gradient(1100px 420px at 88% -10%,rgba(0,169,200,.10),transparent 60%),
  radial-gradient(900px 380px at 8% 0%,rgba(23,102,229,.08),transparent 60%),#fff}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:56px;align-items:center}
.hero-meta{display:flex;gap:18px;flex-wrap:wrap;font-family:var(--font-lat);font-size:12px;letter-spacing:.1em;color:var(--muted);text-transform:uppercase;margin-bottom:22px}
.hero-meta span{display:flex;align-items:center;gap:8px}
.hero-meta span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--cyan)}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero .lede{margin-top:20px;max-width:560px}
.hero-actions{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
.hero-trust{margin-top:26px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:12.5px;color:var(--muted)}
.hero-trust b{color:var(--ink-2);font-weight:700}
.chip{border:1px solid var(--line-2);background:#fff;border-radius:999px;padding:3px 10px;font-size:12px;color:var(--ink-2)}

/* 产品发射器面板 */
.launcher{background:#fff;border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--shadow-2);overflow:hidden}
.launcher-top{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,#fbfdff,#fff)}
.launcher-top b{font-size:13px;letter-spacing:.02em}
.launcher-top .lat{font-size:11px;color:var(--muted);letter-spacing:.12em;text-transform:uppercase}
.launch-row{display:flex;align-items:center;gap:14px;padding:16px 18px;border-bottom:1px solid var(--line)}
.launch-row:last-child{border-bottom:0}
.launch-row:hover{background:var(--mist)}
.launch-logo{width:42px;height:42px;border-radius:11px;flex:none;display:grid;place-items:center;color:#fff;font-weight:800;font-size:16px;overflow:hidden}
.launch-logo img{width:100%;height:100%;object-fit:cover}
.launch-row .lt{flex:1;min-width:0}
.launch-row .lt b{display:flex;align-items:center;gap:8px;font-size:15px}
.launch-row .lt small{display:block;color:var(--muted);font-size:12.5px;margin-top:2px}
.status{display:inline-flex;align-items:center;gap:6px;font-size:11px;font-family:var(--font-lat);font-weight:700;letter-spacing:.06em;color:var(--green)}
.status::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor;box-shadow:0 0 0 3px rgba(33,185,135,.15)}
.status.soon{color:var(--gold)}
.status.soon::before{box-shadow:0 0 0 3px rgba(255,176,32,.16)}
.launch-row .go{font-family:var(--font-lat);font-size:12px;color:var(--muted)}

/* ---------- 子品牌 Bento ---------- */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:18px}
.tile{position:relative;border-radius:var(--r-l);overflow:hidden;border:1px solid var(--line);background:#fff;min-height:250px;display:flex;flex-direction:column;justify-content:space-between;padding:26px;transition:transform .2s,box-shadow .2s}
.tile:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.tile .k{font-family:var(--font-lat);font-size:11px;letter-spacing:.14em;text-transform:uppercase;opacity:.72}
.tile h3{font-size:24px;margin:10px 0 8px}
.tile p{font-size:13.5px;line-height:1.7;opacity:.82;max-width:46ch}
.tile .foot{display:flex;align-items:center;justify-content:space-between;margin-top:20px;font-size:12.5px}
.tile.dark{background:linear-gradient(150deg,#101725,#0b0f1a 60%);color:#e8f4ff;border-color:#1c2637}
.tile.dark .accent{color:var(--linghui-accent)}
.tile.violet{background:linear-gradient(150deg,#fbfaff,#f3edff 70%);border-color:#e4d9f7}
.tile.violet .accent{color:var(--xiaolan)}
.tile.abyss{background:linear-gradient(150deg,#0f2f3f,#0b2230 70%);color:#e6f6f2;border-color:#17404f}
.tile.abyss .accent{color:var(--guixu-accent)}
.tile.wide{grid-column:span 12;flex-direction:row;align-items:center;gap:36px;background:var(--mist)}
.tile.c4{grid-column:span 4}
.tile.c8{grid-column:span 8}
.tile.c6{grid-column:span 6}
.tile-logo{height:34px;display:flex;align-items:center;gap:10px}
.tile-logo img{height:30px;width:auto}
.tile-logo .mark{width:34px;height:34px;border-radius:9px;display:grid;place-items:center;font-weight:800;color:#fff;font-size:15px}
.tile .big-num{font-family:var(--font-lat);font-size:44px;font-weight:800;letter-spacing:0}
.capability-labels{display:flex;gap:10px;align-items:center;justify-content:flex-end;flex-wrap:wrap}
.capability-labels > span:not(.link-arrow){border:1px solid var(--line-2);border-radius:999px;background:#fff;padding:7px 11px;font-size:12px;font-weight:700;color:var(--ink-2);white-space:nowrap}

/* ---------- 产品/能力列表行 ---------- */
.rows{border-top:1px solid var(--line)}
.row-line{display:grid;grid-template-columns:64px minmax(0,1.1fr) minmax(0,1.6fr) auto;gap:24px;align-items:center;padding:22px 8px;border-bottom:1px solid var(--line);transition:background .15s}
.row-line:hover{background:var(--mist)}
.row-line .no{font-family:var(--font-lat);font-size:13px;color:var(--muted);font-weight:700}
.row-line h3{font-size:18px}
.row-line h3 small{display:block;font-size:11px;font-family:var(--font-lat);letter-spacing:.12em;color:var(--muted);text-transform:uppercase;margin-bottom:4px;font-weight:700}
.row-line p{font-size:13.5px;color:var(--muted)}
.row-line .price{font-family:var(--font-lat);font-weight:800;color:var(--brand);font-size:14px;white-space:nowrap}

/* ---------- Tabs ---------- */
.tabs{display:flex;gap:6px;flex-wrap:wrap;border-bottom:1px solid var(--line);margin-bottom:26px}
.tab{padding:10px 16px;font-size:14px;font-weight:700;color:var(--muted);border-bottom:2px solid transparent;margin-bottom:-1px}
.tab.is-on{color:var(--ink);border-color:var(--brand)}
.pgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.pcard{border:1px solid var(--line);border-radius:var(--r-m);padding:20px;background:#fff;transition:transform .18s,box-shadow .18s,border-color .18s}
.pcard:hover{transform:translateY(-3px);box-shadow:var(--shadow-1);border-color:var(--line-2)}
.pcard h4{font-size:15.5px}
.pcard .price{margin:8px 0 10px;font-family:var(--font-lat);font-weight:800;color:var(--brand);font-size:13.5px}
.pcard p{font-size:12.8px;color:var(--muted);line-height:1.65}
.pcard .more{margin-top:14px;font-size:12.5px;font-weight:700;color:var(--brand)}

/* ---------- 行业横滑 ---------- */
.hscroll{display:flex;gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:14px;scrollbar-width:thin}
.hscroll::-webkit-scrollbar{height:6px}
.hscroll::-webkit-scrollbar-thumb{background:var(--line-2);border-radius:3px}
.ind-card{flex:0 0 300px;scroll-snap-align:start;border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden;background:#fff}
.ind-card img{height:150px;width:100%;object-fit:cover}
.ind-card .body{padding:18px}
.ind-card h4{font-size:16px}
.ind-card ul{margin:10px 0 0;padding:0;list-style:none;font-size:12.8px;color:var(--muted)}
.ind-card li{padding:4px 0 4px 16px;position:relative}
.ind-card li::before{content:"";position:absolute;left:0;top:12px;width:6px;height:1.5px;background:var(--cyan)}

/* ---------- 案例 ---------- */
.case-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.case-card{border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden;background:#fff;display:flex;flex-direction:column}
.case-card .media{position:relative;height:230px;overflow:hidden}
.case-card .media img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.case-card:hover .media img{transform:scale(1.04)}
.case-card .media .metric{position:absolute;left:18px;bottom:16px;background:rgba(7,24,50,.82);backdrop-filter:blur(6px);color:#fff;border-radius:10px;padding:8px 14px;font-family:var(--font-lat);font-weight:800;font-size:15px}
.case-card .body{padding:22px}
.case-card h4{font-size:18px}
.case-card p{margin-top:10px;font-size:13.2px;color:var(--muted);line-height:1.75}
.evidence-line{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);display:grid;gap:6px;font-size:12px;color:var(--muted);line-height:1.65}
.evidence-line b{color:var(--ink-2)}

/* ---------- 事实说明 / FAQ ---------- */
.fact-panel{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:26px 0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.fact-item h3{font-size:13px;color:var(--muted);margin-bottom:8px}
.fact-item p{font-size:13.5px;line-height:1.75;color:var(--ink-2)}
.fact-meta{margin-top:18px;display:flex;gap:18px;flex-wrap:wrap;font-size:12px;color:var(--muted)}
.fact-meta a{color:var(--brand);font-weight:700}
.faq-list{border-top:1px solid var(--line)}
.faq-list details{border-bottom:1px solid var(--line);padding:0 4px}
.faq-list summary{cursor:pointer;list-style:none;padding:20px 36px 20px 0;font-size:15px;font-weight:800;position:relative}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"+";position:absolute;right:4px;top:17px;font-size:22px;font-weight:400;color:var(--brand)}
.faq-list details[open] summary::after{content:"−"}
.faq-list details p{padding:0 42px 20px 0;color:var(--muted);font-size:13.5px;line-height:1.8;max-width:82ch}
.theme-linghui .fact-panel,.theme-linghui .faq-list,.theme-linghui .faq-list details,.theme-linghui .evidence-line{border-color:#1b2536}
.theme-linghui .fact-item p,.theme-linghui .faq-list details p{color:#8fa2bd}
.theme-linghui .fact-item h3{color:#b9c8de}
.theme-linghui .fact-meta{color:#8fa2bd}
.theme-linghui .fact-meta a,.theme-linghui .faq-list summary::after{color:var(--linghui-accent)}

/* ---------- 数据带 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden;background:#fff}
.stat{padding:28px 26px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat .v{font-family:var(--font-lat);font-size:38px;font-weight:800;letter-spacing:0;color:var(--ink)}
.stat .v i{font-style:normal;color:var(--brand)}
.stat .l{margin-top:6px;font-size:12.5px;color:var(--muted)}

/* ---------- CTA ---------- */
.cta-band{background:linear-gradient(120deg,var(--navy),#0a2f6b 55%,#0b4f8f);color:#fff;border-radius:var(--r-l);padding:52px 56px;display:flex;align-items:center;justify-content:space-between;gap:32px}
.cta-band h2{font-size:30px}
.cta-band p{margin-top:10px;color:#bcd3f2;font-size:14px;max-width:52ch}
.cta-band .btn-primary{background:#fff;color:var(--brand-ink)}
.cta-band .btn-ghost{background:transparent;border-color:rgba(255,255,255,.35);color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:#081426;color:#9fb2cc;margin-top:96px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr 1fr;gap:32px;padding:56px 0 40px}
.foot-grid h5{color:#fff;font-size:13px;margin:0 0 14px;font-weight:700}
.foot-grid a,.foot-grid li{display:block;font-size:12.8px;color:#9fb2cc;padding:4px 0;list-style:none}
.foot-grid a:hover{color:#fff}
.foot-grid ul{margin:0;padding:0}
.foot-brand{display:flex;align-items:center;gap:10px}
.foot-brand img{height:30px;width:auto}
.foot-brand b{color:#fff;font-size:15px}
.foot-note{margin-top:16px;font-size:12.5px;line-height:1.8;max-width:34ch}
.foot-qr{display:flex;gap:10px;margin-top:14px}
.foot-qr img{width:76px;height:76px;border-radius:8px;border:1px solid #1d3050}
.copyright{border-top:1px solid #14263f;padding:18px 0;font-size:12px;display:flex;gap:10px;flex-wrap:wrap;color:#7488a5}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s cubic-bezier(.2,.7,.2,1),transform .6s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}

/* ---------- 产品详情页（子品牌主题） ---------- */
.theme-linghui{--ink:#e8f1ff;--ink-2:#b9c8de;--muted:#8fa2bd;--paper:#0b0f1a;--line:#1b2536;--line-2:#26334a;--mist:#0e1524;--mist-2:#121b2c;--brand:var(--linghui-blue);--cyan:var(--linghui-accent)}
.theme-linghui body,.theme-linghui{background:var(--paper);color:var(--ink)}
.theme-linghui .site-header{background:rgba(11,15,26,.82);border-color:#1b2536}
.theme-linghui .btn-ghost{background:transparent;color:var(--ink);border-color:#2a3850}
.theme-linghui .pcard,.theme-linghui .tile{background:#0e1524;border-color:#1b2536}
.theme-linghui .link-arrow{color:var(--linghui-accent)}
.theme-linghui .site-footer{background:#070b13;margin-top:0}
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}

/* ---------- 移动端 ---------- */
.mobile{max-width:390px;margin:0 auto;border:1px solid var(--line);border-radius:28px;overflow:hidden;box-shadow:var(--shadow-2);background:#fff}
@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr}
  .bento .tile{grid-column:span 12 !important}
  .fact-panel{grid-template-columns:1fr 1fr}
  .pgrid{grid-template-columns:1fr 1fr}
  .case-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr}
  .stat:nth-child(2){border-right:0}
  .stat{border-bottom:1px solid var(--line)}
  .row-line{grid-template-columns:40px 1fr;gap:10px}
  .row-line p,.row-line .price{grid-column:2}
  .foot-grid{grid-template-columns:1fr 1fr}
  .mega{display:none}
}

/* ---------- 移动端导航 ---------- */
.menu-btn{display:none;width:44px;height:44px;border:1px solid var(--line-2);border-radius:9px;background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;margin-left:auto}
.menu-btn span{width:16px;height:1.6px;background:var(--ink);display:block}
.mobile-menu{position:fixed;inset:68px 0 auto 0;background:#fff;border-bottom:1px solid var(--line);padding:10px 20px 22px;z-index:59;opacity:0;visibility:hidden;transform:translateY(-10px);transition:.2s;box-shadow:var(--shadow-2)}
body.nav-open .mobile-menu{opacity:1;visibility:visible;transform:none}
.mobile-menu a{display:block;padding:12px 4px;border-bottom:1px solid var(--line);font-weight:600;font-size:15px}
.mobile-menu a small{display:block;color:var(--muted);font-weight:400;font-size:12px}
.mega.force{opacity:1;visibility:visible;transform:translate(-50%,0)}
@media (max-width:960px){
  .main-nav{display:none}
  .menu-btn{display:inline-flex}
  .nav-actions{margin-left:0}
  .nav-actions .btn-ghost{display:none}
  .steps{grid-template-columns:1fr 1fr}
  .hero{padding:48px 0 40px}
  .section{padding:60px 0}
  .cta-band{padding:34px 26px;flex-direction:column;align-items:flex-start}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px}
  .product-hero-grid{grid-template-columns:minmax(0,1fr) !important;gap:36px !important}
  .product-hero-grid > *{min-width:0}
}

@media (max-width:620px){
  .nav-wrap{gap:10px}
  .brand{min-width:0;flex-shrink:1}
  .brand img{height:32px}
  .brand-txt{min-width:0}
  .brand-txt b{font-size:14px;white-space:nowrap}
  .brand-txt span{display:none}
  .steps{grid-template-columns:minmax(0,1fr)}
  .fact-panel{grid-template-columns:minmax(0,1fr)}
}

/* ---------- 子品牌扩展：九尾 / 归墟 ---------- */
.tile.c3{grid-column:span 3}
.tile.warm{background:linear-gradient(150deg,#241a10,#1c1917 70%);color:#fde8c8;border-color:#3d2d18}
.tile.warm .accent{color:#f59e0b}
.tile.fox{background:linear-gradient(150deg,#fbfbff,#eef0ff 70%);border-color:#dfe3fb}
.tile.fox .accent{color:#6d5bf6}
.theme-jiuwei{--brand:#6d5bf6;--brand-600:#5a48e0;--cyan:#22d3ee}
.theme-jiuwei .btn-primary{background:#6d5bf6;box-shadow:0 10px 24px rgba(109,91,246,.28)}
.theme-jiuwei .eyebrow,.theme-jiuwei .link-arrow,.theme-jiuwei .pcard .price,.theme-jiuwei .pcard .more{color:#6d5bf6}
@media (max-width:960px){.tile.c3{grid-column:span 12 !important}}
@media (max-width:960px){
  html.no-js .mobile-menu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none}
}