/* ZHQN v2「光核」设计系统 · 共享基础样式（join / about / login 共用；首页 index.html 目前为内联同源样式） */
:root{
  --bg:#05060A; --bg-1:#0A0C12; --bg-2:#10131B;
  --ink:#F4F2EC; --ink-2:#c9cbd2; --mut:#8B8F9C; --faint:#4A4F5C; --line:rgba(255,255,255,.08); --line-2:rgba(255,255,255,.14);
  --lime:#C4E85C; --lime-lite:#DCF285; --lime-deep:#A6D63E; --glow:rgba(196,232,92,.35);
  --lime-ink:#C4E85C;              /* 青柠「文字」色：深色主题用亮青柠，浅色主题覆盖为深橄榄绿 */
  --glass:rgba(16,19,27,.55);
  --surface:rgba(255,255,255,.03); /* 次级面：输入框 / 浅填充；随主题翻转 */
  --scrim:rgba(5,6,10,.62);        /* 导航玻璃底 / 遮罩的半透底 */
  --danger:#E0786F;
  --maxw:1320px;
  --ff:"Space Grotesk",-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  --zh:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Space Grotesk",sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --ease:cubic-bezier(.2,.7,.2,1);
  color-scheme:dark;
}
/* 白天模式：浅色令牌（沿用 W1 §2 品牌浅色板；青柠文字用深橄榄绿保证可读） */
html[data-theme="light"]{
  --bg:#F7F5F0; --bg-1:#FBFAF8; --bg-2:#FFFFFF;
  --ink:#1C1C22; --ink-2:#3C4048; --mut:#5F5F6A; --faint:#9A9AA2;
  --line:rgba(28,28,34,.10); --line-2:rgba(28,28,34,.16);
  --lime:#C4E85C; --lime-lite:#DCF285; --lime-deep:#A6D63E; --glow:rgba(110,154,36,.26);
  --lime-ink:#4F6B12;
  --glass:rgba(255,255,255,.74);
  --surface:rgba(28,28,34,.03);
  --scrim:rgba(247,245,240,.78);
  --danger:#C0433A;
  color-scheme:light;
}
/* 主题换色同帧完成；保留页面进出场和常规悬停过渡。 */
html.theme-changing,html.theme-changing *,html.theme-changing *::before,html.theme-changing *::after{transition:none!important}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--zh);-webkit-font-smoothing:antialiased;line-height:1.65;overflow-x:hidden}
/* 页面切换过渡：进场淡入（纯 CSS、无白屏风险）+ 离场淡出（JS 加 .is-leaving）。
   html 已是主题底色，翻页画布不白闪；fill 用默认 none，动画结束不钉死 opacity，离场态可接管 */
@keyframes pageIn{from{opacity:0}}
body{animation:pageIn .32s var(--ease);transition:opacity .22s var(--ease)}
body.is-leaving{opacity:0}
a{color:inherit;text-decoration:none}
img{display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px}
h1,h2,h3,h4{margin:0;line-height:1.15;letter-spacing:-.01em}
::selection{background:var(--lime);color:#0b1200}

/* 质感：颗粒 + 网格 + 滚动进度 */
/* .grain 透明度随主题：见下方 html[data-theme] 覆盖 */
.grain{position:fixed;inset:-50%;z-index:90;pointer-events:none;opacity:.05;mix-blend-mode:screen;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>")}
.gridbg{position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:64px 64px;opacity:.35;
  -webkit-mask-image:radial-gradient(ellipse 70% 60% at 50% 40%,#000 0%,transparent 75%);mask-image:radial-gradient(ellipse 70% 60% at 50% 40%,#000 0%,transparent 75%)}
main,footer,header,section{position:relative;z-index:1}
.progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:80;transform-origin:0 50%;transform:scaleX(0);
  background:linear-gradient(90deg,var(--lime-deep),var(--lime-lite));box-shadow:0 0 12px var(--glow)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-family:var(--zh);font-weight:700;font-size:15px;
  padding:14px 26px;border-radius:999px;border:0;cursor:pointer;transition:transform .2s var(--ease),box-shadow .25s,background .25s,border-color .25s,color .25s;white-space:nowrap}
.btn-gold{background:linear-gradient(135deg,var(--lime-lite),var(--lime-deep));color:#0f1a04;box-shadow:0 0 0 1px rgba(196,232,92,.4),0 10px 34px rgba(166,214,62,.28)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(196,232,92,.7),0 14px 46px rgba(196,232,92,.45)}
.btn-ghost{background:var(--surface);border:1px solid var(--line-2);color:var(--ink);backdrop-filter:blur(8px)}
.btn-ghost:hover{border-color:rgba(196,232,92,.6);color:var(--lime)}

/* 小标 / 标题 */
.eyebrow{display:inline-flex;align-items:center;gap:12px;font-family:var(--mono);font-size:12px;letter-spacing:.24em;text-transform:uppercase;color:var(--lime)}
.eyebrow .idx{color:var(--faint);letter-spacing:.1em}
.eyebrow .idx::after{content:" /";color:var(--faint)}
.sec{position:relative;padding:140px 0}
.sec-title{font-size:clamp(32px,4.4vw,58px);font-weight:900;margin:20px 0 18px;max-width:1000px;letter-spacing:-.02em}
.sec-sub{font-size:18px;color:var(--mut);max-width:720px;margin:0}
html[lang="zh-CN"] h1 .lit,html[lang="zh-CN"] h2 .lit{white-space:nowrap}
h1 .lit,h2 .lit{color:transparent;background:linear-gradient(110deg,var(--lime-lite) 0%,var(--lime) 45%,#f7ffd6 60%,var(--lime-deep) 100%);background-size:200% 100%;
  -webkit-background-clip:text;background-clip:text;animation:sheen 6s linear infinite}
@keyframes sheen{to{background-position:-200% 0}}
.kicker{display:inline-flex;align-items:center;gap:10px;font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:var(--lime);
  border:1px solid rgba(196,232,92,.28);background:rgba(196,232,92,.06);padding:7px 14px;border-radius:999px;margin-bottom:30px;backdrop-filter:blur(6px)}
.kicker .pulse{width:7px;height:7px;border-radius:50%;background:var(--lime);animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(196,232,92,.55)}70%{box-shadow:0 0 0 10px rgba(196,232,92,0)}100%{box-shadow:0 0 0 0 rgba(196,232,92,0)}}

/* 滚动揭示 */
[data-reveal]{opacity:0;transform:translateY(28px);filter:blur(8px);transition:opacity .9s var(--ease),transform .9s var(--ease),filter .9s var(--ease)}
[data-reveal].in{opacity:1;transform:none;filter:none}

/* 玻璃卡 + 光标聚光 */
.glass{position:relative;background:var(--glass);border:1px solid var(--line);border-radius:20px;
  backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);overflow:hidden;transition:border-color .3s,transform .4s var(--ease),box-shadow .4s}
.glass::before{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;pointer-events:none;
  background:linear-gradient(140deg,rgba(196,232,92,.45),rgba(196,232,92,0) 35%,rgba(255,255,255,0) 70%,rgba(255,255,255,.08));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude}
.glass::after{content:"";position:absolute;inset:0;pointer-events:none;opacity:0;transition:opacity .3s;
  background:radial-gradient(420px circle at var(--mx,50%) var(--my,50%),rgba(196,232,92,.10),transparent 45%)}
.glass:hover::after{opacity:1}
.glass:hover{border-color:rgba(196,232,92,.25)}

/* 首屏视频背景（各页 hero 共用） */
.hero-media{position:absolute;inset:0;z-index:-2;background:var(--bg) url("../video/hero-poster.jpg") center/cover no-repeat}
.hero-media video{width:100%;height:100%;object-fit:cover;display:block}
.hero-shade{position:absolute;inset:0;z-index:-1;pointer-events:none}

/* NAV */
nav{position:fixed;top:0;left:0;right:0;z-index:70;border-bottom:1px solid transparent;transition:background .35s,border-color .35s,backdrop-filter .35s}
nav.scrolled{background:var(--scrim);backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%);border-bottom-color:var(--line)}
.nav-in{max-width:var(--maxw);margin:0 auto;padding:18px 32px;display:flex;align-items:center;gap:36px}
.logo img{height:24px;width:auto}
.logo-d,html[data-theme="light"] .logo-n{display:none}
html[data-theme="light"] .logo-d{display:block}
.nav-links{display:flex;gap:28px}
.nav-links a{font-size:14px;color:var(--mut);position:relative;transition:color .2s;white-space:nowrap}
.nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:1px;background:var(--lime);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-cta{margin-left:auto;display:flex;gap:10px;align-items:center}
.nav-cta .btn{padding:10px 18px;font-size:14px}
.lang-btn{background:transparent;border:1px solid var(--line-2);color:var(--mut);font-family:var(--mono);font-size:12px;font-weight:600;padding:9px 12px;border-radius:999px;cursor:pointer;letter-spacing:.06em;transition:all .2s}
.lang-btn:hover{border-color:var(--lime);color:var(--lime)}
@media(max-width:1100px){.nav-links{display:none}}
@media(max-width:640px){.nav-cta .btn-ghost{display:none}}


/* MODAL */
.modal{position:fixed;inset:0;z-index:100;display:none;align-items:center;justify-content:center;padding:20px;background:rgba(3,4,7,.72);backdrop-filter:blur(10px)}
.modal.open{display:flex}
.modal-box{width:100%;max-width:440px;padding:34px;border-radius:22px;background:var(--bg-2);border:1px solid var(--line-2);position:relative;box-shadow:0 40px 120px rgba(0,0,0,.6),0 0 0 1px rgba(196,232,92,.08)}
.modal-box h3{font-size:22px;font-weight:800;margin-bottom:8px}
.modal-box .sub{color:var(--mut);font-size:14px;margin-bottom:22px}
.modal-box label{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--mut);margin:16px 0 7px;text-transform:uppercase}
.modal-box input,.modal-box textarea{width:100%;background:var(--surface);border:1px solid var(--line-2);border-radius:11px;padding:12px 14px;color:var(--ink);font-size:14.5px;font-family:var(--zh);outline:0;transition:border-color .2s}
.modal-box input:focus,.modal-box textarea:focus{border-color:rgba(196,232,92,.6)}
.modal-box .x{position:absolute;right:18px;top:14px;cursor:pointer;color:var(--mut);font-size:24px;line-height:1}
.modal-box .x:hover{color:var(--ink)}
.modal-box .btn{width:100%;margin-top:24px}
.modal-box input[aria-invalid="true"],.modal-box textarea[aria-invalid="true"]{border-color:var(--danger)}
.modal-box .field-err{margin-top:7px;font-size:12.5px;color:var(--danger)}
.modal-box .demo-note{display:flex;align-items:center;gap:8px;margin:18px 0 0;font-size:12.5px;color:var(--mut)}
.modal-box .demo-note::before{content:"";flex:none;width:6px;height:6px;border-radius:50%;background:var(--lime);box-shadow:0 0 8px var(--glow)}
.modal-box .demo-note+.btn{margin-top:12px}
.thanks{text-align:center;padding:14px 0}
.thanks .orb{width:64px;height:64px;border-radius:50%;margin:0 auto 18px;background:radial-gradient(circle at 38% 36%,var(--lime-lite),var(--lime-deep) 60%,transparent);box-shadow:0 0 40px rgba(196,232,92,.55)}

/* 终极 CTA（复用光核视频） */
.final{position:relative;overflow:hidden;text-align:center;padding:160px 0 150px;isolation:isolate;border-top:1px solid var(--line)}
.final-media{position:absolute;inset:0;z-index:-2;background:var(--bg) url("../video/hero-poster.jpg") center/cover}
.final-media video{width:100%;height:100%;object-fit:cover;opacity:.55}
.final-shade{position:absolute;inset:0;z-index:-1;background:radial-gradient(ellipse 55% 60% at 50% 50%,rgba(5,6,10,.35),var(--bg) 85%)}
.final h2{font-size:clamp(32px,5vw,68px);font-weight:900;letter-spacing:-.03em;margin:22px auto 20px;max-width:1000px}
.final p{color:var(--ink-2);max-width:560px;margin:0 auto 36px;font-size:17px}
.final .btn{padding:17px 38px;font-size:16px}

@media(max-width:640px){.wrap{padding:0 18px}.nav-in{padding:14px 18px;gap:14px}.sec{padding:96px 0}}

/* 降低动效 */
@media(prefers-reduced-motion:reduce){
  .hero-media video,.final-media video{display:none}
  *,*::before,*::after{animation:none!important;transition:none!important}
  [data-reveal]{opacity:1!important;transform:none!important;filter:none!important}
}

/* ============ 主题定点覆盖 ============ */
/* 小标（mono 青柠）在浅底改用深橄榄绿文字色 */
html[data-theme="light"] .eyebrow{color:var(--lime-ink)}
html[data-theme="light"] .kicker{color:var(--lime-ink);border-color:rgba(110,154,36,.3);background:rgba(110,154,36,.06)}
html[data-theme="light"] .kicker .pulse{background:var(--lime-deep);box-shadow:0 0 8px rgba(110,154,36,.5)}
/* ghost 按钮 hover、导航下划线等用到亮青柠「文字」处，浅底换深绿 */
html[data-theme="light"] .btn-ghost:hover{border-color:rgba(79,107,18,.55);color:var(--lime-ink)}
html[data-theme="light"] .lang-btn:hover,html[data-theme="light"] .nav-links a:hover{color:var(--lime-ink)}
html[data-theme="light"] .nav-links a::after{background:var(--lime-deep)}
/* 玻璃卡：浅底加一点阴影，弱化深色向的白色高光描边 */
html[data-theme="light"] .glass{box-shadow:0 10px 30px rgba(28,28,34,.06)}
html[data-theme="light"] .glass::before{background:linear-gradient(140deg,rgba(110,154,36,.35),rgba(110,154,36,0) 40%,rgba(28,28,34,0) 70%,rgba(28,28,34,.05))}
/* 颗粒：浅底几乎不可见、避免脏点 */
html[data-theme="light"] .grain{opacity:.025;mix-blend-mode:multiply}
/* 终极 CTA 副文案在浅底 */
html[data-theme="light"] .final p{color:var(--mut)}
/* 主题切换按钮沿用 lang-btn 外观 */
.theme-btn{display:inline-flex;align-items:center;justify-content:center}
.theme-btn .ico{font-size:14px;line-height:1}

/* 白天：深色首屏视频隐藏，改浅底青柠光晕（需求胶囊/雷达几何不依赖视频） */
html[data-theme="light"] .hero-media video,
html[data-theme="light"] .final-media video,
html[data-theme="light"] .login-bg video{display:none}
html[data-theme="light"] .hero-media,
html[data-theme="light"] .final-media,
html[data-theme="light"] .login-bg{background:
  radial-gradient(38% 48% at 62% 45%,rgba(166,214,62,.34),rgba(196,232,92,.1) 46%,transparent 72%),
  radial-gradient(64% 74% at 62% 45%,rgba(220,242,133,.26),transparent 72%),
  var(--bg)}
/* 终极 CTA（白天）：去掉深色幕的发泥，改干净的白色高光 + 收紧的青柠微晕 */
html[data-theme="light"] .final-media{background:
  radial-gradient(46% 58% at 50% 42%,#FFFFFF,rgba(255,255,255,0) 72%),
  radial-gradient(26% 36% at 50% 40%,rgba(166,214,62,.2),rgba(196,232,92,0) 70%),
  var(--bg)}
html[data-theme="light"] .final-shade{background:radial-gradient(70% 86% at 50% 42%,transparent 58%,rgba(247,245,240,.55))}

/* ============ 在线客服挂件（v2-chat.js）============ */
#zhqn-chat{position:fixed;right:24px;bottom:40px;z-index:95;font-family:var(--zh)}
/* 气泡按钮 */
.zc-fab{position:relative;width:58px;height:58px;border-radius:50%;border:0;cursor:pointer;
  background:linear-gradient(135deg,var(--lime-lite),var(--lime-deep));color:#0f1a04;
  box-shadow:0 0 0 1px rgba(196,232,92,.4),0 12px 34px rgba(166,214,62,.3);
  display:inline-flex;align-items:center;justify-content:center;transition:transform .2s var(--ease),box-shadow .25s;-webkit-tap-highlight-color:transparent;
  animation:zcIn .5s var(--ease) both}
@keyframes zcIn{from{opacity:0;transform:translateY(10px) scale(.9)}}
/* 动态效果：青柠光环向外脉冲（吸引点击，呼应「光核」涟漪）+ 图标轻浮。
   都挂在 ::after / 图标上，不动按钮自身 transform，故 hover/按下/收起互不冲突 */
.zc-fab::after{content:"";position:absolute;inset:0;border-radius:50%;background:var(--lime);z-index:-1;animation:zcHalo 2.6s var(--ease) infinite}
@keyframes zcHalo{0%{transform:scale(1);opacity:.5}70%{opacity:0}100%{transform:scale(1.95);opacity:0}}
@media(hover:hover){.zc-fab:hover::after{animation-play-state:paused;opacity:0}}
#zhqn-chat.zc-open .zc-fab::after{animation:none;opacity:0}
.zc-fab-ic{display:inline-flex;animation:zcBob 3.2s ease-in-out infinite}
@keyframes zcBob{0%,100%{transform:translateY(0)}50%{transform:translateY(-2.5px)}}
.zc-fab-ic svg{width:26px;height:26px;display:block}
.zc-fab-dot{position:absolute;top:12px;right:12px;width:9px;height:9px;border-radius:50%;background:#2fd27a;border:2px solid #0f1a04;box-shadow:0 0 0 0 rgba(47,210,122,.6);animation:zcPulse 2.2s infinite}
@keyframes zcPulse{0%{box-shadow:0 0 0 0 rgba(47,210,122,.5)}70%{box-shadow:0 0 0 7px rgba(47,210,122,0)}100%{box-shadow:0 0 0 0 rgba(47,210,122,0)}}
@media(hover:hover){.zc-fab:hover{transform:translateY(-3px);box-shadow:0 0 0 1px rgba(196,232,92,.7),0 16px 46px rgba(196,232,92,.45)}}
.zc-fab:active{transform:scale(.95)}
.zc-fab:focus-visible{outline:2px solid var(--lime);outline-offset:3px}
#zhqn-chat.zc-open .zc-fab{opacity:0;pointer-events:none;transform:scale(.6)}
/* 面板 */
.zc-panel{position:absolute;right:0;bottom:0;width:396px;max-width:calc(100vw - 32px);height:min(600px,calc(100vh - 118px));display:flex;flex-direction:column;overflow:hidden;
  background:var(--glass);border:1px solid var(--line);border-radius:18px;backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:0 30px 90px rgba(0,0,0,.45),0 0 0 1px rgba(196,232,92,.08);
  transform-origin:bottom right;animation:zcPop .34s var(--ease)}
.zc-panel[hidden]{display:none}                 /* 关键：盖过上面的 display:flex，让 hidden 真正隐藏 */
.zc-panel.zc-closing{animation:zcPopOut .2s var(--ease) forwards;pointer-events:none}
@keyframes zcPop{from{opacity:0;transform:translateY(12px) scale(.94)}}
@keyframes zcPopOut{to{opacity:0;transform:translateY(10px) scale(.96)}}
html[data-theme="light"] .zc-panel{box-shadow:0 24px 70px rgba(28,28,34,.18),0 0 0 1px rgba(110,154,36,.1)}
.zc-head{display:flex;align-items:center;gap:10px;padding:14px 14px 12px;border-bottom:1px solid var(--line)}
.zc-ava{width:30px;height:30px;border-radius:8px;flex:none}
.zc-htxt{display:flex;flex-direction:column;line-height:1.2;margin-right:auto}
.zc-title{font-size:14.5px;font-weight:800;color:var(--ink)}
.zc-on{display:inline-flex;align-items:center;gap:5px;font-size:11px;color:var(--mut);margin-top:2px}
.zc-on i{width:6px;height:6px;border-radius:50%;background:#2fd27a;box-shadow:0 0 6px rgba(47,210,122,.7)}
.zc-x{width:34px;height:34px;border-radius:9px;border:0;background:transparent;color:var(--mut);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;transition:background .2s,color .2s}
.zc-x svg{width:18px;height:18px}
@media(hover:hover){.zc-x:hover{background:var(--surface);color:var(--ink)}}
.zc-x:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
.zc-demo{margin:0;padding:8px 16px;font-size:11px;color:var(--faint);background:rgba(196,232,92,.05);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:6px}
.zc-demo::before{content:"";flex:none;width:5px;height:5px;border-radius:50%;background:var(--lime)}
/* 消息区 */
.zc-body{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:10px;scrollbar-width:thin;scrollbar-color:var(--line-2) transparent}
.zc-msg{display:flex;max-width:84%}
.zc-msg.bot{align-self:flex-start}
.zc-msg.user{align-self:flex-end;justify-content:flex-end}
.zc-bub{padding:9px 13px;border-radius:14px;font-size:14px;line-height:1.55;white-space:pre-wrap;word-break:break-word}
.zc-msg.bot .zc-bub{background:var(--surface);color:var(--ink);border:1px solid var(--line);border-bottom-left-radius:5px}
.zc-msg.user .zc-bub{background:linear-gradient(135deg,var(--lime-lite),var(--lime-deep));color:#14210a;border-bottom-right-radius:5px}
.zc-typing{display:inline-flex;gap:4px;align-items:center}
.zc-typing i{width:6px;height:6px;border-radius:50%;background:var(--mut);opacity:.5;animation:zcDot 1s infinite}
.zc-typing i:nth-child(2){animation-delay:.15s}.zc-typing i:nth-child(3){animation-delay:.3s}
@keyframes zcDot{0%,60%,100%{transform:translateY(0);opacity:.4}30%{transform:translateY(-4px);opacity:.9}}
/* 已送达卡 */
.zc-delivered{max-width:100%;border:1px solid var(--line);border-radius:14px;border-bottom-left-radius:5px;overflow:hidden;background:var(--bg-2)}
.zc-dv-h{padding:12px 14px 10px}
.zc-dv-h b{display:block;font-size:14px;color:var(--lime-ink);font-weight:800;margin-bottom:3px}
.zc-dv-h p{margin:0;font-size:13px;color:var(--mut)}
.zc-dv-c{display:flex;gap:12px;align-items:center;padding:0 14px 12px}
.zc-qr{margin:0;flex:none;text-align:center}
.zc-qr img{width:84px;height:84px;border-radius:8px;display:block;background:#fff;padding:4px}
.zc-qr figcaption b{display:block;font-size:11.5px;color:var(--ink);font-weight:700;margin-top:5px}
.zc-qr figcaption span{display:block;font-size:10.5px;color:var(--mut)}
.zc-ct-list{display:flex;flex-direction:column;gap:8px;min-width:0}
.zc-ct{display:flex;align-items:center;gap:9px;color:inherit}
.zc-ct-ic{flex:none;width:28px;height:28px;border-radius:8px;display:inline-flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:13px;color:var(--lime-ink);background:rgba(196,232,92,.08);border:1px solid rgba(196,232,92,.25)}
.zc-ct em{display:block;font-style:normal;font-size:10px;color:var(--faint);font-family:var(--mono);letter-spacing:.08em;text-transform:uppercase}
.zc-ct b{display:block;font-size:13px;color:var(--ink);font-weight:600;font-family:var(--mono)}
@media(hover:hover){.zc-ct:hover b{color:var(--lime-ink)}}
.zc-dv-note{margin:0;padding:9px 14px;font-size:11px;color:var(--faint);border-top:1px solid var(--line);background:var(--surface)}
/* 快捷问题 */
.zc-quick{display:flex;flex-wrap:wrap;gap:7px;padding:10px 14px 2px}
.zc-chip{font-size:12.5px;padding:7px 12px;border-radius:999px;border:1px solid var(--line-2);background:transparent;color:var(--mut);cursor:pointer;font-family:var(--zh);transition:all .2s;-webkit-tap-highlight-color:transparent}
@media(hover:hover){.zc-chip:hover{border-color:rgba(196,232,92,.55);color:var(--lime-ink)}}
.zc-chip:active{transform:scale(.97)}
.zc-chip:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
/* 输入行 */
.zc-input{display:flex;align-items:flex-end;gap:8px;padding:12px 14px 14px}
.zc-ta{flex:1;resize:none;max-height:96px;background:var(--surface);border:1px solid var(--line-2);border-radius:12px;padding:10px 12px;color:var(--ink);font-size:14px;font-family:var(--zh);line-height:1.5;outline:0;transition:border-color .2s,box-shadow .2s}
.zc-ta:focus{border-color:rgba(196,232,92,.6);box-shadow:0 0 0 4px rgba(196,232,92,.08)}
.zc-ta::placeholder{color:var(--faint)}
.zc-send{flex:none;width:40px;height:40px;border-radius:11px;border:0;cursor:pointer;background:linear-gradient(135deg,var(--lime-lite),var(--lime-deep));color:#0f1a04;display:inline-flex;align-items:center;justify-content:center;transition:transform .2s,box-shadow .25s}
.zc-send svg{width:19px;height:19px}
@media(hover:hover){.zc-send:hover{box-shadow:0 8px 22px rgba(196,232,92,.4)}}
.zc-send:active{transform:scale(.94)}
.zc-send:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
/* 手机端：底部大卡 */
@media(max-width:480px){
  #zhqn-chat{right:16px;bottom:24px}
  .zc-panel{position:fixed;right:12px;left:12px;bottom:12px;width:auto;max-width:none;height:min(80vh,620px)}
}
@media(prefers-reduced-motion:reduce){
  .zc-fab,.zc-fab::after,.zc-fab-ic,.zc-panel,.zc-panel.zc-closing,.zc-fab-dot,.zc-on i,.zc-typing i{animation:none!important}
  #zhqn-chat.zc-open .zc-fab{display:none}
}

/* 背景视频首帧准备好后再显示，加载期间使用现有海报。 */
video[data-bg-video]:not(.is-video-ready){opacity:0}

/* 昼夜切换：毛玻璃失焦与淡入，图标轻柔淡换，保持文字与背景同步。 */
.theme-btn .ico{position:relative;display:block;width:16px;height:16px}
.theme-btn .ico svg{position:absolute;inset:0;width:16px;height:16px}
.theme-btn .theme-moon{opacity:0}
html[data-theme="light"] .theme-btn .theme-sun{opacity:0}
html[data-theme="light"] .theme-btn .theme-moon{opacity:1}
.theme-btn:active{transform:scale(.97)}
html.theme-motion .theme-btn{view-transition-name:theme-toggle}
html.theme-motion::view-transition{pointer-events:none}
html.theme-motion::view-transition-group(root){animation:none;z-index:1}
html.theme-motion::view-transition-image-pair(root){isolation:auto}
html.theme-motion::view-transition-old(root),html.theme-motion::view-transition-new(root){animation:none;mix-blend-mode:normal;opacity:1}
html.theme-motion::view-transition-old(root){z-index:1}
html.theme-motion::view-transition-new(root){z-index:2}
html.theme-motion::view-transition-group(theme-toggle){animation:none;z-index:2}
html.theme-motion::view-transition-old(theme-toggle){mix-blend-mode:normal;animation:themeIconOut 180ms ease-out both}
html.theme-motion::view-transition-new(theme-toggle){mix-blend-mode:normal;animation:themeIconIn 300ms cubic-bezier(.2,.7,.2,1) both}
@keyframes themeIconOut{to{opacity:0;filter:blur(2px)}}
@keyframes themeIconIn{from{opacity:0;filter:blur(2px)}to{opacity:1;filter:blur(0)}}
@media(prefers-reduced-motion:reduce){.theme-btn:active{transform:none}}