/* =========================================================
 * ORCA Home · index.css
 * 1) v3 landing 样式（来自 Skills/OrcaAIWeb/design/orca-website-v3.html）
 *    - 原 .wrap → 已重命名为 .v3-wrap，避免与悬浮 mascot 的 .wrap 冲突
 * 2) mascot 悬浮容器与 chat 面板定位样式（保留自旧版 index.css）
 * ========================================================= */

/* ========== 1. v3 landing 样式 ========== */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scrollbar-gutter: stable; }

body {
  font-family: 'Noto Sans SC', 'DM Sans', sans-serif;
  background: #f4f6fb;
  color: #1a1f2e;
  overflow-x: hidden;
  line-height: 1.65;
}

:root {
  --bg: #f4f6fb;
  --white: #ffffff;
  --text: #1a1f2e;
  --muted: #6b7a99;
  --border: rgba(0,0,0,0.07);
  --radius-lg: 24px;
  --radius-xl: 28px;
  --shadow: 0 2px 20px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 40px rgba(0,0,0,0.10);
  --tr: all 0.4s cubic-bezier(0.23,1,0.32,1);
}

/* ── NAVBAR ── */
nav {
  position: fixed;
  top: 14px; left: 50%; transform: translateX(-50%);
  width: calc(100% - 48px); max-width: 1080px;
  z-index: 999;
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(18px);
  border: 1px solid rgba(255,255,255,0.95);
  border-radius: 100px;
  padding: 8px 8px 8px 24px;
  display: flex; align-items: center; justify-content: space-between;
  box-shadow: 0 4px 28px rgba(0,0,0,0.07);
  transition: var(--tr);
  isolation: isolate;
}

.logo { display:flex; align-items:center; gap:10px; text-decoration:none; }
.logo-img { height:28px; width:auto; display:block; }
.footer-logo-img { height:24px; }
.logo-mark {
  width:32px; height:32px;
  background: linear-gradient(135deg,#3b82f6,#06b6d4);
  border-radius:9px;
  display:flex; align-items:center; justify-content:center;
  font-family:'DM Sans',sans-serif; font-weight:700; font-size:13px; color:#fff;
}
.logo-name { font-family:'DM Sans',sans-serif; font-weight:700; font-size:16px; color:var(--text); letter-spacing:1px; }

.nav-links { display:flex; align-items:center; gap:4px; list-style:none; position:absolute; left:50%; transform:translateX(-50%); }
.nav-links a {
  color:var(--muted); text-decoration:none;
  font-size:14px; font-weight:500;
  padding:7px 15px; border-radius:100px; transition:var(--tr);
}
.nav-links a:hover { color:var(--text); background:rgba(0,0,0,0.04); }
.nav-cta {
  /* background: var(--text); color: #fff !important; */
  font-size: 14px; font-weight: 600;
  padding: 9px 22px; border-radius: 100px;
  text-decoration: none; white-space: nowrap;
  transition: var(--tr);
  flex-shrink: 0;
  border: solid 1px #000;
  cursor: pointer;
}
.nav-cta:hover { 
  background: #2a3050; 
  color: #fff !important;
}

/* ── HERO ── */
#hero {
  min-height: 100vh;
  background: linear-gradient(155deg,#bde8ff 0%,#d8f2ff 35%,#eef8ff 65%,#f4f6fb 100%);
  display:flex; align-items:center; justify-content:center;
  text-align:center; padding:120px 24px 80px;
  position:relative; overflow:hidden;
}

.hero-curves { position:absolute; inset:0; pointer-events:none; overflow:hidden; }
.hero-curves svg { position:absolute; width:100%; height:100%; opacity:0.22; }

.hero-inner { position:relative; z-index:2; max-width:720px; margin:0 auto; }

.hero-badge {
  display:inline-flex; align-items:center; gap:7px;
  background:rgba(255,255,255,0.72);
  border:1px solid rgba(255,255,255,0.95);
  border-radius:100px; padding:6px 18px;
  font-size:12px; font-weight:500; color:var(--muted);
  margin-bottom:26px; backdrop-filter:blur(10px);
}
.hero-badge .dot { color:#f59e0b; }

.hero-h1 {
  font-family:'DM Sans',sans-serif;
  font-size:clamp(42px,6vw,72px);
  font-weight:700; line-height:1.07;
  color:var(--text); letter-spacing:-2px;
  margin-bottom:18px;
}
.hero-h1 .blue {
  background:linear-gradient(135deg,#3b82f6,#06b6d4);
  -webkit-background-clip:text; -webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero-h1 .gem {
  display:inline-block; width:12px; height:12px;
  background:linear-gradient(135deg,#f59e0b,#ef4444);
  clip-path:polygon(50% 0%,100% 50%,50% 100%,0% 50%);
  margin-left:5px; vertical-align:middle; position:relative; top:-9px;
  animation:spin 4s linear infinite;
}
@keyframes spin { 50%{transform:rotate(180deg) scale(1.2);} }

.hero-sub {
  font-size:16px; color:var(--muted);
  max-width:480px; margin:0 auto 32px;
  line-height:1.75;
}
.hero-sub strong { color:var(--text); font-weight:600; }

.btn-row { display:flex; gap:12px; justify-content:center; flex-wrap:wrap; margin-bottom:48px; }

.btn-dark {
  display:inline-flex; align-items:center; gap:8px;
  background:var(--text); color:#fff;
  padding:13px 28px; border-radius:100px;
  font-size:14px; font-weight:600; text-decoration:none;
  transition:var(--tr); cursor:pointer; border:none;
}
.btn-dark:hover { background:#2a3050; transform:translateY(-2px); box-shadow:0 8px 24px rgba(26,31,46,.22); cursor: pointer;}

.btn-ghost {
  display:inline-flex; align-items:center; gap:8px;
  background:rgba(255,255,255,0.7); color:var(--text);
  padding:13px 28px; border-radius:100px;
  font-size:14px; font-weight:500; text-decoration:none;
  border:1px solid rgba(0,0,0,0.10); transition:var(--tr);
  backdrop-filter:blur(8px);
}
.btn-ghost:hover { background:#fff; box-shadow:var(--shadow); }

.stat-row { display:flex; gap:14px; justify-content:center; flex-wrap:wrap; }
.stat-chip {
  background:rgba(255,255,255,0.75); backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,0.95);
  border-radius:16px; padding:13px 20px; text-align:center;
  box-shadow:var(--shadow); transition:var(--tr);
}
.stat-chip:hover { transform:translateY(-3px); box-shadow:var(--shadow-md); }
.stat-num { font-family:'DM Sans',sans-serif; font-size:26px; font-weight:700; color:var(--text); line-height:1; margin-bottom:3px; }
.stat-lbl { font-size:11px; color:var(--muted); }

/* ── SHARED (原 .wrap 重命名为 .v3-wrap) ── */
.v3-wrap { max-width:1080px; margin:0 auto; padding:88px 24px; }

.eyebrow { font-size:11px; font-weight:700; letter-spacing:2.5px; text-transform:uppercase; color:#3b82f6; margin-bottom:12px; }

.sec-title {
  font-family:'DM Sans',sans-serif;
  font-size:clamp(26px,3.5vw,42px); font-weight:700;
  line-height:1.15; color:var(--text); letter-spacing:-1px; margin-bottom:12px;
}
.sec-title em { font-style:normal; color:#3b82f6; }

.sec-sub { font-size:15px; color:var(--muted); max-width:420px; line-height:1.7; }

.sec-head {
  display:flex; align-items:flex-start; justify-content:space-between;
  gap:36px; margin-bottom:44px; flex-wrap:wrap;
}
.sec-head-l { flex:1; min-width:240px; }
.sec-head-r { flex:1; min-width:200px; padding-top:8px; }
.sec-head-r p { font-size:14px; color:var(--muted); line-height:1.8; }

/* ── CASES ── */
#cases { background:var(--white); }

.cases-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }

.c-card { background:#fff; border:1px solid var(--border); border-radius:var(--radius-lg); overflow:hidden; transition:var(--tr); }
.c-card:hover { transform:translateY(-5px); box-shadow:var(--shadow-md); border-color:transparent; }

.c-top {
  padding:24px 24px 20px; position:relative; min-height:130px;
  display:flex; flex-direction:column; justify-content:flex-end;
}
.c-top.teal  { background:linear-gradient(135deg,#5de0c5,#3db8e8,#2a8fd4); }
.c-top.violet{ background:linear-gradient(135deg,#c084fc,#a855f7,#6d28d9); }
.c-top.blue  { background:linear-gradient(135deg,#60a5fa,#3b82f6,#1d4ed8); }

.c-ico {
  position:absolute; top:16px; right:16px;
  width:38px; height:38px;
  background:rgba(255,255,255,0.22); border-radius:11px;
  display:flex; align-items:center; justify-content:center; font-size:18px;
}
.c-tag { font-size:10px; font-weight:600; letter-spacing:1px; text-transform:uppercase; color:rgba(255,255,255,0.7); margin-bottom:5px; }
.c-title { font-family:'DM Sans',sans-serif; font-size:17px; font-weight:700; color:#fff; line-height:1.3; }

.c-body { padding:20px 24px 24px; }
.c-body p { font-size:13px; color:var(--muted); line-height:1.8; margin-bottom:16px; }
.c-body p strong { color:var(--text); font-weight:600; }

.metrics { display:flex; flex-direction:column; gap:8px; }
.m-row {
  display:flex; align-items:center; justify-content:space-between;
  padding:7px 12px; background:var(--bg); border-radius:9px;
}
.m-lbl { font-size:12px; color:var(--muted); }
.m-val { font-family:'DM Sans',sans-serif; font-size:13px; font-weight:700; }
.m-val.g { color:#10b981; }
.m-val.r { color:#ef4444; }

/* ── SERVICES / STACKED CARDS ── */
#services { background:var(--bg); }

.shrimp-pill {
  display:inline-flex; align-items:center; gap:8px;
  background:linear-gradient(135deg,#1d4ed8,#0ea5e9);
  color:#fff; padding:7px 18px 7px 12px;
  border-radius:100px; font-size:13px; font-weight:600; margin-bottom:14px;
}

.pain-box {
  background:#fff; border-radius:var(--radius-lg);
  padding:24px 28px; margin-bottom:44px;
  border-left:4px solid #f59e0b;
  box-shadow:var(--shadow);
}
.pain-box p { font-size:14px; color:var(--muted); line-height:1.8; margin-bottom:8px; }
.pain-box .ans { color:var(--text); font-weight:600; font-size:15px; margin-bottom:0; }

/* ── 2×2 GRID CARDS ── */
.srv-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.srv-grid-card {
  border-radius: var(--radius-xl);
  overflow: hidden;
  padding: 32px 32px 28px;
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.23,1,0.32,1),
              box-shadow 0.35s ease;
  box-shadow: 0 2px 16px rgba(0,0,0,0.07);
}

.srv-grid-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.srv-grid-card:hover {
  box-shadow: 0 12px 40px rgba(0,0,0,0.13);
  transform: translateY(-4px);
}

.srv-grid-card.c1 { background: linear-gradient(135deg,#e0f2fe,#bfdbfe); }
.srv-grid-card.c2 { background: linear-gradient(135deg,#d1fae5,#a7f3d0); }
.srv-grid-card.c3 { background: linear-gradient(135deg,#ede9fe,#ddd6fe); }
.srv-grid-card.c4 { background: linear-gradient(135deg,#fef3c7,#fde68a); }

.sgc-step {
  font-size: 10px; font-weight: 700; letter-spacing: 2.5px;
  text-transform: uppercase; color: rgba(0,0,0,0.35); margin-bottom: 10px;
}

.sgc-title {
  font-family: 'DM Sans', sans-serif;
  font-size: 20px; font-weight: 700; color: var(--text);
  margin-bottom: 6px; line-height: 1.25;
}

.sgc-sub {
  font-size: 13px; color: rgba(0,0,0,0.45);
  font-weight: 500; margin-bottom: 14px;
}

.sgc-body {
  font-size: 13.5px; color: var(--muted);
  line-height: 1.8; margin-bottom: 18px;
}

.sgc-body strong { color: var(--text); }

.sgc-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.sgc-tag {
  font-size: 12px; font-weight: 500;
  background: rgba(0,0,0,0.06); color: rgba(0,0,0,0.55);
  padding: 5px 13px; border-radius: 100px;
}

/* MCP table inside card */
.mcp-mini {
  width: 100%; border-collapse: collapse; font-size: 12.5px; margin: 10px 0 14px;
}
.mcp-mini th {
  text-align: left; padding: 7px 12px;
  font-size: 10px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase;
  color: rgba(0,0,0,0.35); border-bottom: 1px solid rgba(0,0,0,0.08);
}
.mcp-mini td {
  padding: 7px 12px; border-bottom: 1px solid rgba(0,0,0,0.06);
  color: rgba(0,0,0,0.55); vertical-align: top;
}
.mcp-mini td strong { color: var(--text); font-weight: 600; }
.mcp-mini tr:last-child td { border-bottom: none; }

@media(max-width:640px){
  .srv-grid { grid-template-columns: 1fr; }
}

/* result banner */
.result-banner {
  margin-top: 48px;
  background: linear-gradient(135deg,#6366f1,#3b82f6,#06b6d4);
  border-radius:var(--radius-xl); padding:34px 40px;
  display:flex; align-items:center; gap:28px; flex-wrap:wrap;
}
.rb-ico { font-size:44px; flex-shrink:0; }
.rb-title { font-family:'DM Sans',sans-serif; font-size:20px; font-weight:700; color:#fff; margin-bottom:6px; }
.rb-desc { font-size:13px; color:rgba(255,255,255,0.72); line-height:1.7; margin-bottom:12px; }
.rb-tags { display:flex; flex-wrap:wrap; gap:8px; }
.rb-tag { background:rgba(255,255,255,0.18); color:#fff; font-size:12px; font-weight:500; padding:5px 13px; border-radius:100px; }

/* ── PRICING ── */
#pricing { background:var(--white); }

.price-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:18px; align-items:start; }

.p-card {
  background:var(--bg); border:1.5px solid var(--border);
  border-radius:var(--radius-xl); padding:28px 24px 24px;
  display:flex; flex-direction:column; transition:var(--tr); position:relative;
}
.p-card:hover { transform:translateY(-4px); box-shadow:var(--shadow-md); border-color:transparent; background:var(--white); }
.p-card.feat {
  background:linear-gradient(160deg,#0f172a,#1e3a5f);
  border-color:transparent; box-shadow:0 16px 50px rgba(15,23,42,.22);
  transform:translateY(-8px);
}
.p-card.feat:hover { transform:translateY(-13px); }

.p-badge {
  position:absolute; top:-12px; left:50%; transform:translateX(-50%);
  background:linear-gradient(90deg,#f59e0b,#ef4444);
  color:#fff; font-size:10px; font-weight:700; letter-spacing:1px; text-transform:uppercase;
  padding:4px 15px; border-radius:100px; white-space:nowrap;
}

.p-icon { width:42px; height:42px; border-radius:12px; display:flex; align-items:center; justify-content:center; font-size:20px; margin-bottom:16px; }
.p-icon.b { background:rgba(59,130,246,.1); }
.p-icon.w { background:rgba(255,255,255,.15); }
.p-icon.g { background:rgba(16,185,129,.1); }

.p-name { font-family:'DM Sans',sans-serif; font-size:16px; font-weight:700; color:var(--text); margin-bottom:4px; }
.p-card.feat .p-name { color:#fff; }
.p-mode { font-size:12px; color:var(--muted); margin-bottom:18px; }
.p-card.feat .p-mode { color:rgba(255,255,255,.5); }

.p-price {
  display:flex; align-items:flex-end; gap:3px;
  padding:16px 0; border-top:1px solid var(--border); border-bottom:1px solid var(--border);
  margin-bottom:18px;
}
.p-card.feat .p-price { border-color:rgba(255,255,255,.12); }
.p-cur { font-size:18px; font-weight:700; color:#f59e0b; padding-bottom:5px; }
.p-num { font-family:'DM Sans',sans-serif; font-size:44px; font-weight:700; line-height:1; color:var(--text); }
.p-card.feat .p-num { color:#fff; }
.p-unit { font-size:12px; color:var(--muted); padding-bottom:6px; }
.p-card.feat .p-unit { color:rgba(255,255,255,.45); }

.p-list { list-style:none; display:flex; flex-direction:column; gap:9px; flex:1; margin-bottom:18px; }
.p-list li { display:flex; align-items:flex-start; gap:8px; font-size:13px; color:var(--muted); line-height:1.5; }
.p-card.feat .p-list li { color:rgba(255,255,255,.72); }
.p-list li .ck {
  flex-shrink:0; width:17px; height:17px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  font-size:9px; font-weight:700; background:rgba(59,130,246,.1); color:#3b82f6; margin-top:2px;
}
.p-card.feat .p-list li .ck { background:rgba(245,158,11,.2); color:#fbbf24; }

.p-suit { font-size:12px; color:var(--muted); background:rgba(0,0,0,.04); padding:9px 12px; border-radius:9px; margin-bottom:16px; line-height:1.5; }
.p-card.feat .p-suit { background:rgba(255,255,255,.08); color:rgba(255,255,255,.45); }
.p-suit strong { color:#3b82f6; }
.p-card.feat .p-suit strong { color:#93c5fd; }

.p-btn {
  display:block; text-align:center; padding:11px;
  border-radius:100px; font-size:13px; font-weight:600;
  text-decoration:none; cursor:pointer; transition:var(--tr); border:none;
  cursor: pointer;
}
.p-btn.out { border:1.5px solid rgba(0,0,0,.12); color:var(--text); background:transparent; }
.p-btn.out:hover { background:var(--text); color:#fff; }
.p-btn.fil { background:linear-gradient(135deg,#f59e0b,#ef4444); color:#fff; }
.p-btn.fil:hover { box-shadow:0 6px 20px rgba(245,158,11,.4); transform:translateY(-1px); }

.trust-row { margin-top:30px; display:flex; justify-content:center; gap:28px; flex-wrap:wrap; }
.t-item { display:flex; align-items:center; gap:7px; font-size:13px; color:var(--muted); }
.t-ico { width:28px; height:28px; background:var(--bg); border-radius:7px; display:flex; align-items:center; justify-content:center; font-size:14px; }

/* ── FOOTER CTA ── */
#fcta {
  background:linear-gradient(155deg,#dbeafe,#e0f2fe,#cffafe);
  padding:88px 24px; text-align:center;
}
.fc-inner { max-width:560px; margin:0 auto; }
.fc-eye { font-size:11px; font-weight:700; letter-spacing:2.5px; text-transform:uppercase; color:#3b82f6; margin-bottom:14px; }
.fc-title {
  font-family:'DM Sans',sans-serif;
  font-size:clamp(28px,4vw,48px); font-weight:700;
  color:var(--text); line-height:1.12; letter-spacing:-1.5px; margin-bottom:14px;
}
.fc-title em { font-style:normal; color:#3b82f6; }
.fc-sub { font-size:15px; color:var(--muted); line-height:1.7; margin-bottom:32px; }
.fc-note { margin-top:12px; font-size:12px; color:var(--muted); }

/* ── FOOTER ── */
footer { background:#0f172a; padding:32px 5%; }
.ft-inner { max-width:1080px; margin:0 auto; display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:18px; }
.ft-links { display:flex; gap:22px; list-style:none; }
.ft-links a { font-size:13px; color:rgba(255,255,255,.38); text-decoration:none; transition:color .2s; }
.ft-links a:hover { color:rgba(255,255,255,.8); }
.ft-copy { font-size:11px; color:rgba(255,255,255,.28); line-height:1.7; text-align:right; }

/* ── FADE IN ── */
.fi { opacity:0; transform:translateY(22px); transition:opacity .7s ease, transform .7s ease; }
.fi.in { opacity:1; transform:translateY(0); }
.d1{transition-delay:.08s} .d2{transition-delay:.16s} .d3{transition-delay:.24s}

/* ── RESPONSIVE ── */
@media(max-width:900px){
  .cases-grid{grid-template-columns:1fr;}
  .srv-grid{grid-template-columns:1fr;}
  .price-grid{grid-template-columns:1fr;}
  .p-card.feat{transform:none;}
  .nav-links{display:none;}
  nav{width:calc(100% - 32px);}
}
@media(max-width:600px){
  .btn-row{flex-direction:column; align-items:center;}
  .stat-row{flex-direction:column; align-items:center;}
  .result-banner{flex-direction:column;}
  .ft-inner{flex-direction:column; text-align:center;}
  .ft-copy{text-align:center;}
  .ft-links{justify-content:center; flex-wrap:wrap;}
  .trust-row{flex-direction:column; align-items:center;}
}


/* ========================================================= */
/* ========== 2. Mascot & Chat（保留自旧版 index.css）========== */
/* ========================================================= */

/* ─── mascot 悬浮容器 ─── */
.wrap {
  position: fixed;
  bottom: 10px;
  right: 10px;
  width: 220px;
  height: 260px;
  z-index: 9999;
  transform: scale(0.8);
  transition: opacity .3s ease, transform .3s ease;
}
.wrap.hidden{
  opacity: 0;
  transform: scale(0.6);
  pointer-events: none;
}

/* ─── chat 全屏面板 ─── */
.chat{
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 2rem;
  gap: 1rem;
  visibility: visible;
  pointer-events: auto;
}

.chat.hidden{
  visibility: hidden;
  pointer-events: none;
}

.chat_bg{
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: #000;
  opacity: 0;
  transition: opacity .3s ease;
  pointer-events: none;
}
.chat:not(.hidden) .chat_bg{
  opacity: 0.5;
  pointer-events: auto;
}

@media screen and (max-width: 768px){
  .wrap{
    transform: scale(0.6);
    bottom: -30px;
    right: -30px;
  }
}

/* chat 面板头部内嵌的小 mascot */
#mascot_chat{
  transform: scale(0.2);
  position: static;
  width: 14rem;
  margin: 0 -5rem;
}

/* .hidden：chat 用 visibility 过渡，mascot 用 opacity 过渡，其他用 display:none */
.hidden:not(.chat):not(.wrap){
  display: none;
}

.overflow_hidden{
  overflow: hidden;
}

/* =========================================================
 * 本地字体（替代 Google Fonts，文件位于 /static/public/fonts/）
 * 文件缺失时浏览器自动 fallback 到系统 sans-serif（font-display:swap）
 * ========================================================= */
@font-face{
  font-family:'DM Sans';
  font-style:normal;
  font-weight:100 1000;
  font-display:swap;                                                                                                                                                                                                        
  src:url('/static/public/fonts/DM_Sans/DMSans-VariableFont_opsz,wght.ttf') format('truetype-variations');                                                                                                                                                                               
}                                                                                                                                                                                                                                                                                        
@font-face{                                                                                                                                                                                                                                                                              
  font-family:'DM Sans';
  font-style:italic;
  font-weight:100 1000;
  font-display:swap;                                                                                                                                                                                                        
  src:url('/static/public/fonts/DM_Sans/DMSans-Italic-VariableFont_opsz,wght.ttf') format('truetype-variations');                                                                                                                                                                        
}                                                                                                                                                                                                                                                                                        
@font-face{                                                                                                                                                                                                                                                                              
  font-family:'Noto Sans SC';
  font-style:normal;
  font-weight:100 1000;
  font-display:swap;                                                                                                                                                                                                   
  src:url('/static/public/fonts/Noto_Sans_SC/NotoSansSC-VariableFont_wght.ttf') format('truetype-variations');                                                                                                                                                                           
} 

/* =========================================================
 * SEO/GEO 改造新增样式
 * ========================================================= */
.sec-title .em-line{display:block;font-weight:inherit;color:inherit;}

/* FAQ 段 */
#faq{padding:96px 0;}
#faq .faq-list{
  display:grid;grid-template-columns:1fr;gap:24px;margin-top:40px;
}
#faq .faq-item{
  background:rgba(255,255,255,.45);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border:1px solid rgba(0,0,0,.08);
  border-radius:18px;padding:28px 32px;
  box-shadow:0 6px 24px rgba(0,0,0,.05);
  transition:transform .3s ease, box-shadow .3s ease;
}
#faq .faq-item:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(0,112,243,.08);}
#faq .faq-item summary{
  font-size:17px;font-weight:600;color:#1a1f36;cursor:pointer;list-style:none;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
#faq .faq-item summary::-webkit-details-marker{display:none;}
#faq .faq-item summary::after{
  content:"+";font-size:22px;font-weight:300;color:#0070f3;
  transition:transform .3s ease;
}
#faq .faq-item[open] summary::after{content:"−";}
#faq .faq-item p{margin:16px 0 0;font-size:15px;line-height:1.75;color:#4a5266;}

@media (max-width:1023px){
  #faq .faq-list{grid-template-columns:1fr;}
  #faq .faq-item{padding:28px;}
}
@media (max-width:768px){
  #faq{padding:64px 0;}
  #faq .faq-item{padding:18px;border-radius:14px;}
  #faq .faq-item summary{font-size:16px;}
  #faq .faq-item p{font-size:14px;}
}

/* AI 消息操作栏：语音开关 */
.message.assistant .message-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 10px;
    padding-top: 8px;
    border-top: 1px solid rgba(0, 242, 255, 0.12);
}
.voice-toggle-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    font-size: 12px;
    line-height: 1;
    color: #000;
    background: rgba(0, 242, 255, 0.08);
    border: 1px solid rgba(0, 242, 255, 0.35);
    border-radius: 999px;
    cursor: pointer;
    transition: all 0.2s ease;
}
.voice-toggle-btn:hover {
    background: rgba(0, 242, 255, 0.18);
    box-shadow: 0 0 12px rgba(0, 242, 255, 0.35);
}
.voice-toggle-btn.off {
    color: rgba(0, 0, 0, 0.5);
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
}
.voice-toggle-btn.off:hover {
    box-shadow: none;
    background: rgba(255, 255, 255, 0.08);
}