/* ============================================================
   AURELIA · Landing Page
   所有颜色由后台「外观主题」注入（landing.js → CSS 变量）
   :root 这里只是兜底默认值（香槟金 · 深墨）
   ============================================================ */
:root{
  /* —— 强调色（后台可调） —— */
  --accent:#c9a227;
  --accent-soft:#e8cd7a;
  --accent-deep:#b08e1f;
  --accent-line:rgba(201,162,39,.32);
  --accent-wash:rgba(201,162,39,.12);
  --accent-ink:#0a0a0a;
  --orb-1:rgba(201,162,39,.22);
  --orb-2:rgba(201,162,39,.10);
  --orb-3:rgba(201,162,39,.12);

  /* —— 底色与文字（后台可调） —— */
  --bg:#08080a;
  --bg-deep:#050506;
  --bg-glow:#14131a;
  --bg-panel:#121216;
  --nav-glass:rgba(8,8,10,.74);
  --panel-glass:#121216;
  --text:#e8e6e1;
  --text-strong:#f4f1ea;
  --text-body:#b8b5ae;
  --text-muted:#8f8d88;
  --text-faint:#6b6963;
  --hero-a:#ffffff;
  --hero-b:#d8d4c9;
  --hero-c:#8d897e;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --hero-veil:rgba(0,0,0,.42);
  --card-wash:rgba(255,255,255,.032);
  --card-wash-2:rgba(255,255,255,.006);
  --card-wash-hover:rgba(255,255,255,.055);
  --msg-admin-bg:rgba(255,255,255,.055);
  --ph-color:rgba(255,255,255,.11);
  --placeholder-a:#17161b;
  --placeholder-b:#0c0c0f;
  --grain-opacity:.045;
  --shadow-strong:rgba(0,0,0,.45);

  /* —— 字体与形状（后台可调） —— */
  --radius:2px;
  --font-title:"Times New Roman","Songti SC","STSong","SimSun","Noto Serif SC",Georgia,serif;
  --font-body:-apple-system,BlinkMacSystemFont,"PingFang SC","Helvetica Neue","Microsoft YaHei",Arial,sans-serif;

  --maxw:1240px;
  --online:#38d39f;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--bg);color:var(--text);font-family:var(--font-body);
  font-size:16px;line-height:1.75;letter-spacing:.01em;
  overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
::selection{background:var(--accent);color:var(--accent-ink)}

/* ---------- 背景光效 ---------- */
.bg-fx{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden;background:
  radial-gradient(120% 80% at 50% -10%, var(--bg-glow) 0%, var(--bg) 55%, var(--bg-deep) 100%)}
.orb{position:absolute;border-radius:50%;filter:blur(90px)}
.orb-1{width:52vw;height:52vw;left:-12vw;top:-14vw;background:radial-gradient(circle,var(--orb-1),transparent 62%)}
.orb-2{width:46vw;height:46vw;right:-14vw;top:6vw;background:radial-gradient(circle,var(--orb-2),transparent 64%)}
.orb-3{width:60vw;height:60vw;left:22vw;bottom:-30vw;background:radial-gradient(circle,var(--orb-3),transparent 68%)}
.grain{position:absolute;inset:0;opacity:var(--grain-opacity);mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E")}

/* ---------- 导航 ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;transition:.45s cubic-bezier(.2,.7,.2,1);
  border-bottom:1px solid transparent}
.nav.scrolled{background:var(--nav-glass);backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);border-bottom-color:var(--line)}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:20px 32px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{width:34px;height:34px;border:1px solid var(--accent-line);color:var(--accent);
  display:grid;place-items:center;font-family:var(--font-title);font-size:18px;letter-spacing:0;
  background:linear-gradient(160deg,var(--accent-wash),transparent);border-radius:50%}
.brand-mark.small{width:26px;height:26px;font-size:13px}
.brand-mark img{width:100%;height:100%;object-fit:cover;border-radius:50%}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-family:var(--font-title);font-size:17px;letter-spacing:.28em;font-weight:400;color:var(--text-strong)}
.brand-text em{font-style:normal;font-size:8.5px;letter-spacing:.34em;color:var(--text-faint);margin-top:3px}
.nav-links{display:flex;gap:34px;margin-left:auto}
.nav-links a{font-size:13px;letter-spacing:.12em;color:var(--text-muted);transition:.25s;position:relative;padding:4px 0}
.nav-links a:hover{color:var(--text-strong)}
.nav-links a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:1px;background:var(--accent);transition:right .35s}
.nav-links a:hover::after{right:0}
.nav-cta{flex:0 0 auto;font-size:13px;letter-spacing:.14em;padding:11px 24px;white-space:nowrap;border:1px solid var(--accent-line);
  color:var(--accent-soft);background:linear-gradient(160deg,var(--accent-wash),transparent);
  transition:.35s;border-radius:var(--radius)}
.nav-cta:hover{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);box-shadow:0 8px 30px var(--accent-wash)}

/* ---------- 通用版块骨架 ---------- */
main{position:relative;z-index:1}
.section{position:relative;padding:var(--section-pad, 120px) 32px}
.section-inner{max-width:var(--maxw);margin:0 auto}
.sec-head{max-width:780px;margin-bottom:64px}
.sec-head.center{margin:0 auto 64px;text-align:center}
.eyebrow{display:inline-flex;align-items:center;gap:12px;font-size:10.5px;letter-spacing:.42em;
  color:var(--accent);text-transform:uppercase;margin-bottom:26px}
.eyebrow::before{content:"";width:34px;height:1px;background:var(--accent-line)}
.sec-head.center .eyebrow::after{content:"";width:34px;height:1px;background:var(--accent-line)}
.sec-title{font-family:var(--font-title);font-weight:400;font-size:calc(clamp(30px,4.2vw,52px) * var(--ts,1));line-height:1.22;
  letter-spacing:-.01em;color:var(--tc, var(--text-strong));white-space:pre-line}
.sec-sub{margin-top:22px;color:var(--sc, var(--text-muted));font-size:calc(15.5px * var(--ss,1));line-height:1.9;font-weight:300;white-space:pre-line}
.sec-body{margin-top:26px;color:var(--bc, var(--text-body));font-size:calc(15.5px * var(--bs,1));line-height:2.05;font-weight:300;white-space:pre-line}
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--line-2),transparent)}

/* ---------- 板块主图（背景层 / 横幅） ---------- */
.has-bg{position:relative;overflow:hidden}
.sec-bg{position:absolute;inset:0;z-index:0;background-size:cover;background-position:center;
  opacity:.85;transform:scale(1.03);pointer-events:none}
.sec-bg::after{content:"";position:absolute;inset:0;opacity:1;
  background:linear-gradient(180deg,var(--bg) 0%,var(--hero-veil) 24%,var(--hero-veil) 54%,var(--bg) 96%)}
.has-bg > .section-inner,.has-bg > .hero-inner{position:relative;z-index:1}
/* 板块顶部横幅图 */
.band{margin:0 0 46px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  aspect-ratio:21/8;background:linear-gradient(150deg,var(--placeholder-a),var(--placeholder-b))}
.band img{width:100%;height:100%;object-fit:cover;transition:.9s}
.band:hover img{transform:scale(1.02)}

/* ---------- HERO ---------- */
.hero{min-height:100svh;display:flex;align-items:center;padding:150px 32px 110px}
.hero-inner{max-width:var(--maxw);margin:0 auto;width:100%}
.hero .eyebrow{margin-bottom:34px}
.hero-title{font-family:var(--font-title);font-weight:400;font-size:calc(clamp(44px,8.4vw,108px) * var(--ts,1));line-height:1.04;
  letter-spacing:-.025em;white-space:pre-line;
  background:var(--tc, linear-gradient(180deg,var(--hero-a) 12%,var(--hero-b) 62%,var(--hero-c) 100%));
  -webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-fill-color:transparent}
.hero-sub{margin-top:34px;max-width:620px;color:var(--sc, var(--text-muted));font-size:calc(clamp(15px,1.6vw,17.5px) * var(--ss,1));
  line-height:2;font-weight:300;white-space:pre-line}
.hero-actions{margin-top:52px;display:flex;align-items:center;gap:26px;flex-wrap:wrap}
.btn-gold{position:relative;display:inline-flex;align-items:center;gap:14px;padding:17px 38px;
  background:linear-gradient(120deg,var(--accent) 0%,var(--accent-soft) 50%,var(--accent) 100%);color:var(--accent-ink);
  font-size:14px;letter-spacing:.12em;font-weight:600;overflow:hidden;border-radius:var(--radius);
  box-shadow:0 14px 44px var(--accent-wash);transition:.4s}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 20px 60px var(--accent-line)}
.btn-gold span{position:relative;z-index:1}
.btn-ghost{display:inline-flex;align-items:center;gap:10px;font-size:14px;letter-spacing:.12em;color:var(--text-body);
  border-bottom:1px solid var(--line-2);padding-bottom:6px;transition:.3s}
.btn-ghost:hover{color:var(--accent-soft);border-color:var(--accent-line)}
.hero-metrics{margin-top:86px;display:flex;gap:clamp(30px,6vw,90px);flex-wrap:wrap;
  padding-top:34px;border-top:1px solid var(--line)}
.hero-metric b{display:block;font-family:var(--font-title);font-size:clamp(26px,3.4vw,38px);font-weight:400;color:var(--text-strong);letter-spacing:-.01em}
.hero-metric span{display:block;margin-top:8px;font-size:11.5px;letter-spacing:.18em;color:var(--text-faint)}

/* ---------- STATS ---------- */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat{padding:52px 28px;background:var(--bg);text-align:center;transition:.5s}
.stat:hover{background:var(--bg-panel)}
.stat b{font-family:var(--font-title);font-weight:400;font-size:clamp(34px,4.4vw,56px);color:var(--text-strong);
  display:inline-flex;align-items:baseline;gap:2px}
.stat b i{font-style:normal;font-size:.42em;color:var(--accent);margin-left:4px;letter-spacing:.06em}
.stat span{display:block;margin-top:14px;font-size:12px;letter-spacing:.2em;color:var(--text-faint)}

/* ---------- FEATURE ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.fcard{position:relative;padding:42px 34px 46px;border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(170deg,var(--card-wash),var(--card-wash-2));
  transition:.55s cubic-bezier(.2,.7,.2,1);overflow:hidden}
.fcard::before{content:"";position:absolute;left:0;top:0;width:100%;height:1px;
  background:linear-gradient(90deg,transparent,var(--accent-line),transparent);opacity:0;transition:.55s}
.fcard:hover{transform:translateY(-6px);border-color:var(--line-2);background:linear-gradient(170deg,var(--card-wash-hover),var(--card-wash-2))}
.fcard:hover::before{opacity:1}
.fcard .num{font-family:var(--font-title);font-size:13px;letter-spacing:.3em;color:var(--accent);opacity:.8}
.fcard h3{margin:22px 0 16px;font-family:var(--font-title);font-weight:400;font-size:23px;color:var(--text-strong);letter-spacing:.01em}
.fcard p{color:var(--text-muted);font-size:14.5px;line-height:1.95;font-weight:300}
.fcard .pic{margin:-42px -34px 30px;height:190px;overflow:hidden;background:linear-gradient(140deg,var(--placeholder-a),var(--placeholder-b))}
.fcard .pic img{width:100%;height:100%;object-fit:cover;transition:.8s;opacity:.92}
.fcard:hover .pic img{transform:scale(1.05);opacity:1}

/* ---------- GALLERY ---------- */
.gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.gitem{position:relative;overflow:hidden;aspect-ratio:4/5;background:linear-gradient(150deg,var(--placeholder-a),var(--placeholder-b));
  border:1px solid var(--line);border-radius:var(--radius)}
.gitem img{width:100%;height:100%;object-fit:cover;transition:1.1s cubic-bezier(.2,.7,.2,1);opacity:.9}
.gitem:hover img{transform:scale(1.06);opacity:1}
.gitem .cap{position:absolute;left:0;right:0;bottom:0;padding:26px 24px;
  background:linear-gradient(to top,var(--panel-glass),transparent 78%);
  transform:translateY(6px);transition:.5s}
.gitem:hover .cap{transform:translateY(0)}
.gitem .cap b{display:block;font-family:var(--font-title);font-size:19px;font-weight:400;color:var(--text-strong)}
.gitem .cap span{display:block;margin-top:6px;font-size:12px;letter-spacing:.14em;color:var(--text-muted)}
.ph{position:absolute;inset:0;display:grid;place-items:center;color:var(--ph-color);font-size:11px;letter-spacing:.3em}
.ph::after{content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(135deg,var(--card-wash) 0 2px,transparent 2px 12px)}

/* ---------- STEPS ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;counter-reset:s}
.step{position:relative;padding:0 26px 0 0}
.step::before{content:"";position:absolute;left:0;top:19px;right:26px;height:1px;background:var(--line-2)}
.step:last-child::before{right:0;background:linear-gradient(90deg,var(--line-2),transparent)}
.step .idx{position:relative;display:grid;place-items:center;width:38px;height:38px;border-radius:50%;
  border:1px solid var(--accent-line);background:var(--bg);color:var(--accent);font-family:var(--font-title);font-size:14px;z-index:1}
.step h4{margin:26px 0 12px;font-family:var(--font-title);font-weight:400;font-size:19px;color:var(--text-strong)}
.step p{color:var(--text-muted);font-size:14px;line-height:1.85;font-weight:300;max-width:230px}

/* ---------- RICHTEXT ---------- */
.richtext{display:block;max-width:860px}
.richtext .pic{position:relative;aspect-ratio:4/3;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(150deg,var(--placeholder-a),var(--placeholder-b))}
.richtext .pic img{width:100%;height:100%;object-fit:cover}
.richtext.rev .txt{order:2}
.richtext.rev .pic{order:1}

/* ---------- QUOTE ---------- */
.quote{text-align:center;max-width:900px;margin:0 auto}
.quote .mark{font-family:var(--font-title);font-size:80px;line-height:.6;color:var(--accent);opacity:.35;margin-bottom:26px}
.quote blockquote{font-family:var(--font-title);font-size:calc(clamp(23px,3.2vw,38px) * var(--ts,1));line-height:1.5;
  color:var(--text-strong);font-weight:400;letter-spacing:.005em;white-space:pre-line}
.quote .who{margin-top:38px}
.quote .who b{display:block;font-size:13.5px;letter-spacing:.16em;color:var(--text-body);font-weight:500}
.quote .who span{display:block;margin-top:7px;font-size:11.5px;letter-spacing:.2em;color:var(--text-faint)}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);max-width:900px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:28px 4px;text-align:left;font-size:16.5px;color:var(--text);transition:.3s;font-weight:400}
.faq-q:hover{color:var(--accent-soft)}
.faq-q .ic{flex:0 0 auto;width:22px;height:22px;position:relative;opacity:.55;transition:.4s}
.faq-q .ic::before,.faq-q .ic::after{content:"";position:absolute;left:50%;top:50%;background:currentColor;transform:translate(-50%,-50%)}
.faq-q .ic::before{width:14px;height:1px}
.faq-q .ic::after{width:1px;height:14px;transition:.4s}
.faq-item.open .faq-q .ic::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .5s cubic-bezier(.2,.7,.2,1)}
.faq-a p{padding:0 4px 30px;color:var(--text-muted);font-size:14.8px;line-height:2;font-weight:300;max-width:760px}

/* ---------- CTA ---------- */
.cta-sec{text-align:center;padding:150px 32px}
.cta-sec .sec-title{font-size:calc(clamp(32px,5vw,62px) * var(--ts,1))}
.cta-sec .btn-gold{margin-top:52px}
.cta-note{margin-top:26px;font-size:12px;letter-spacing:.2em;color:var(--text-faint)}

/* ---------- FOOTER ---------- */
.footer{position:relative;z-index:1;border-top:1px solid var(--line);padding:44px 32px 56px}
.footer-inner{max-width:var(--maxw);margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.footer-brand{display:flex;align-items:center;gap:12px;font-family:var(--font-title);letter-spacing:.26em;font-size:13px;color:var(--text-body)}
.footer p{font-size:12px;color:var(--text-faint);letter-spacing:.06em}

/* ---------- 动画 ---------- */
.rv{opacity:0;transform:translateY(26px);transition:opacity 1s cubic-bezier(.2,.7,.2,1),transform 1s cubic-bezier(.2,.7,.2,1)}
.rv.in{opacity:1;transform:none}
.rv.d1{transition-delay:.1s}.rv.d2{transition-delay:.2s}.rv.d3{transition-delay:.3s}.rv.d4{transition-delay:.4s}

/* ============================================================
   聊天组件
   ============================================================ */
.chat-root{position:fixed;right:28px;bottom:28px;z-index:300;font-family:var(--font-body)}
.chat-fab{position:relative;width:62px;height:62px;border-radius:50%;display:grid;place-items:center;
  background:linear-gradient(150deg,var(--bg-panel),var(--bg-deep));border:1px solid var(--accent-line);color:var(--accent-soft);
  box-shadow:0 14px 44px var(--shadow-strong),0 0 0 1px var(--accent-wash) inset;
  transition:.45s cubic-bezier(.2,.7,.2,1)}
.chat-fab svg{width:26px;height:26px}
.chat-fab:hover{transform:translateY(-3px) scale(1.03);border-color:var(--accent);color:var(--accent-soft);
  box-shadow:0 20px 60px var(--shadow-strong),0 0 40px var(--accent-wash)}
.fab-dot{position:absolute;top:9px;right:9px;width:9px;height:9px;border-radius:50%;background:var(--online);
  box-shadow:0 0 0 3px rgba(56,211,159,.18);animation:pulse 2.2s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.55;transform:scale(.82)}}
.chat-root.open .chat-fab{transform:scale(.9);opacity:0;pointer-events:none}

.chat-teaser{position:absolute;right:0;bottom:78px;width:300px;display:flex;gap:12px;padding:16px 34px 16px 16px;
  background:var(--chat-teaser-bg, var(--panel-glass));backdrop-filter:blur(16px);border:1px solid var(--line-2);
  border-radius:calc(var(--radius) + 4px);box-shadow:0 20px 60px var(--shadow-strong);animation:teaserIn .6s cubic-bezier(.2,.7,.2,1)}
@keyframes teaserIn{from{opacity:0;transform:translateY(12px) scale(.97)}to{opacity:1;transform:none}}
.teaser-avatar{flex:0 0 auto;width:36px;height:36px;border-radius:50%;display:grid;place-items:center;
  font-family:var(--font-title);color:var(--accent);border:1px solid var(--accent-line);font-size:15px}
.teaser-body b{display:block;font-size:13px;color:var(--text-strong);letter-spacing:.04em}
.teaser-body p{margin-top:5px;font-size:12.5px;color:var(--text-muted);line-height:1.6}
.teaser-close{position:absolute;top:6px;right:8px;font-size:15px;color:var(--text-faint);line-height:1}
.teaser-close:hover{color:var(--text-strong)}

.chat-panel{position:absolute;right:0;bottom:0;width:384px;max-width:calc(100vw - 32px);height:600px;max-height:calc(100svh - 60px);
  display:none;flex-direction:column;overflow:hidden;
  background:var(--chat-panel-bg, linear-gradient(180deg,var(--panel-glass),var(--bg)));
  border:1px solid var(--line-2);border-radius:calc(var(--radius) + 6px);
  box-shadow:0 40px 120px var(--shadow-strong),0 0 0 1px var(--card-wash) inset;
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px)}
.chat-root.open .chat-panel{display:flex;animation:panelIn .5s cubic-bezier(.2,.7,.2,1)}
@keyframes panelIn{from{opacity:0;transform:translateY(20px) scale(.98)}to{opacity:1;transform:none}}

/* 渠道选择弹层（跳转 TG/WA 时） */
.channel-picker{position:fixed;inset:0;background:rgba(0,0,0,.55);backdrop-filter:blur(4px);
  display:flex;align-items:center;justify-content:center;z-index:99999}
.cp-box{background:#121212;border:1px solid rgba(255,255,255,.12);border-radius:16px;
  padding:28px 26px;min-width:280px;max-width:90vw;text-align:center;color:#e8e6e1}
.cp-title{font-size:18px;font-weight:600;margin-bottom:8px}
.cp-desc{font-size:13px;color:#9a978f;margin-bottom:20px}
.cp-btns{display:flex;flex-direction:column;gap:10px}
.cp-btn{display:block;width:100%;padding:13px;font-size:15px;font-weight:600;border:none;border-radius:10px;
  background:linear-gradient(135deg,#c9a227,#a8861c);color:#0a0a0a;cursor:pointer;transition:.2s}
.cp-btn:hover{filter:brightness(1.08)}
.cp-close{margin-top:14px;background:none;border:none;color:#9a978f;font-size:13px;cursor:pointer}
.cp-close:hover{color:#e8e6e1}
.chat-head{display:flex;align-items:center;gap:12px;padding:16px 18px;border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,var(--card-wash),transparent)}
.chat-avatar{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;font-family:var(--font-title);
  color:var(--accent);border:1px solid var(--accent-line);background:radial-gradient(circle at 30% 25%,var(--accent-wash),transparent 70%);font-size:16px}
.chat-meta{flex:1;min-width:0}
.chat-meta b{display:block;font-size:14px;color:var(--text-strong);letter-spacing:.05em;font-weight:500}
.chat-status{display:inline-flex;align-items:center;gap:6px;margin-top:3px;font-size:11px;color:var(--text-muted)}
.chat-status .dot{width:6px;height:6px;border-radius:50%;background:var(--online);box-shadow:0 0 8px rgba(56,211,159,.7)}
.chat-close{font-size:14px;color:var(--text-muted);padding:6px;transition:.3s}
.chat-close:hover{color:var(--text-strong)}

.chat-body{flex:1;overflow-y:auto;padding:20px 18px;display:flex;flex-direction:column;gap:12px;
  scroll-behavior:smooth;overscroll-behavior:contain}
.chat-body::-webkit-scrollbar{width:4px}
.chat-body::-webkit-scrollbar-thumb{background:var(--line-2);border-radius:4px}
.msg{max-width:84%;padding:11px 15px;font-size:13.8px;line-height:1.75;border-radius:calc(var(--radius) + 1px);
  word-break:break-word;white-space:pre-wrap;animation:msgIn .35s ease-out}
@keyframes msgIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.msg.admin{align-self:flex-start;background:var(--msg-admin-bg);border:1px solid var(--line);
  color:var(--text);border-bottom-left-radius:1px}
.msg.visitor{align-self:flex-end;background:linear-gradient(140deg,var(--accent),var(--accent-deep));
  color:var(--accent-ink);font-weight:500;border-bottom-right-radius:1px}
.msg.msg-image{padding:5px;line-height:0}
.msg.msg-image img{max-width:100%;max-height:260px;border-radius:calc(var(--radius) + 1px);display:block}
.msg.visitor.msg-image{background:transparent}
.msg-time{font-size:10px;letter-spacing:.08em;color:var(--text-faint);margin-top:-6px;padding:0 4px}
.msg-time.right{align-self:flex-end}
.typing{align-self:flex-start;display:flex;gap:4px;padding:14px 16px;background:var(--msg-admin-bg);
  border:1px solid var(--line);border-radius:calc(var(--radius) + 1px)}
.typing i{width:5px;height:5px;border-radius:50%;background:var(--text-muted);animation:tp 1.3s infinite}
.typing i:nth-child(2){animation-delay:.18s}.typing i:nth-child(3){animation-delay:.36s}
@keyframes tp{0%,60%,100%{opacity:.3;transform:translateY(0)}30%{opacity:1;transform:translateY(-3px)}}

.chat-hint{padding:9px 18px;font-size:11.5px;color:var(--text-faint);text-align:center;border-top:1px solid var(--line)}
.chat-input{display:flex;align-items:flex-end;gap:8px;padding:12px 14px;border-top:1px solid var(--line);
  background:var(--card-wash-2)}
.chat-input textarea{flex:1;resize:none;background:transparent;border:none;outline:none;color:var(--text);
  font-family:inherit;font-size:13.8px;line-height:1.6;max-height:110px;padding:9px 4px}
.chat-input textarea::placeholder{color:var(--text-faint)}
.chat-input button{flex:0 0 auto;width:38px;height:38px;border-radius:50%;display:grid;place-items:center;
  background:var(--accent);color:var(--accent-ink);transition:.3s}
.chat-input button svg{width:17px;height:17px}
.chat-input button:hover{background:var(--accent-soft);transform:scale(1.05)}
.chat-input button:disabled{opacity:.45;transform:none}
.chat-input .chat-img{background:transparent;border:1px solid var(--line-2);color:var(--text-muted);width:38px;height:38px}
.chat-input .chat-img:hover{background:var(--card-wash-hover);color:var(--accent-soft);border-color:var(--accent-line);transform:none}
.chat-input .chat-img svg{width:18px;height:18px}
.chat-input .chat-img.busy{opacity:.5;pointer-events:none}
.chat-foot{padding:8px 14px 11px;text-align:center;font-size:10px;letter-spacing:.08em;color:var(--text-faint)}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav-links{display:none}
  .feature-grid,.gallery-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr);gap:38px 0}
  .step::before{display:none}
  .richtext{grid-template-columns:1fr}
  .richtext.rev .txt{order:0}.richtext.rev .pic{order:0}
}
@media (max-width:640px){
  .section{padding:78px 20px}
  .hero{padding:126px 20px 84px;min-height:auto}
  .hero-metrics{gap:26px 34px;margin-top:56px}
  .nav-inner{padding:14px 16px;gap:10px 12px;flex-wrap:wrap}
  .brand-text em{display:none}
  .brand-text strong{font-size:14px;letter-spacing:.16em}
  .nav-cta{margin-left:auto;font-size:11px;letter-spacing:.05em;padding:8px 14px}
  .feature-grid,.gallery-grid{grid-template-columns:1fr}
  .gitem{aspect-ratio:5/4}
  .steps{grid-template-columns:1fr;gap:30px}
  .chat-root{right:16px;bottom:16px}
  .chat-panel{width:calc(100vw - 24px);height:calc(100svh - 40px);right:-4px;bottom:-4px}
  .chat-teaser{width:calc(100vw - 60px)}
  .chat-fab{width:56px;height:56px}
  .footer-inner{flex-direction:column;align-items:flex-start;gap:14px}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}