:root {
  --jade: #0f9d7a;
  --jade-deep: #0b7a5f;
  --jade-soft: #e6f5ef;
  --gold: #c8a45c;
  --gold-soft: #f6efdf;
  --ink: #1f2a2e;
  --ink-2: #4a5a55;
  --muted: #859390;
  --cream: #f7f5ef;
  --card: #ffffff;
  --line: #e4e6e0;
  --shadow: 0 8px 30px rgba(31, 42, 46, 0.08);
  --shadow-lg: 0 18px 50px rgba(15, 157, 122, 0.18);
  --radius: 18px;
  --radius-sm: 12px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  color: var(--ink);
  background: var(--cream);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, .serif { font-family: "Noto Serif SC", "Songti SC", "SimSun", serif; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

/* ---------- 导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 6vw;
  background: rgba(247, 245, 239, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; }
.brand .logo {
  width: 34px; height: 34px; border-radius: 10px;
  background: linear-gradient(135deg, var(--jade), var(--jade-deep));
  color: #fff; display: grid; place-items: center; font-size: 18px;
}
.brand b { font-size: 18px; font-family: "Noto Serif SC", serif; }
.brand span { color: var(--jade-deep); }
.nav-links { display: flex; gap: 26px; font-size: 15px; }
.nav-links a { color: var(--ink-2); transition: color .2s; }
.nav-links a:hover, .nav-links a.active { color: var(--jade-deep); }
.nav-cta {
  background: var(--jade); color: #fff; padding: 9px 18px; border-radius: 999px;
  font-size: 14px; font-weight: 500; transition: transform .15s, box-shadow .2s;
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: var(--shadow-lg); }

/* ---------- 通用 ---------- */
.section { padding: 64px 6vw; }
.container { max-width: 1180px; margin: 0 auto; }
.section-head { text-align: center; margin-bottom: 38px; }
.section-head .eyebrow {
  color: var(--jade-deep); font-size: 13px; letter-spacing: 3px;
  text-transform: uppercase; font-weight: 600;
}
.section-head h2 { font-size: 30px; margin: 8px 0 10px; color: var(--ink); }
.section-head p { color: var(--ink-2); max-width: 620px; margin: 0 auto; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px; border-radius: 999px; font-size: 15px; font-weight: 500;
  cursor: pointer; border: none; transition: transform .15s, box-shadow .2s, background .2s;
}
.btn-primary { background: var(--jade); color: #fff; box-shadow: var(--shadow); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-ghost { background: #fff; color: var(--jade-deep); border: 1px solid var(--line); }
.btn-ghost:hover { border-color: var(--jade); }
.chip {
  display: inline-block; padding: 5px 14px; border-radius: 999px;
  background: var(--jade-soft); color: var(--jade-deep); font-size: 13px; font-weight: 500;
}

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: 84px 6vw 72px;
  background:
    radial-gradient(900px 420px at 82% -10%, rgba(200,164,92,.18), transparent 60%),
    radial-gradient(700px 380px at 10% 110%, rgba(15,157,122,.16), transparent 60%),
    linear-gradient(180deg, #fbfaf5, #f1efe7);
}
.hero-inner { max-width: 1180px; margin: 0 auto; display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; }
.hero h1 { font-size: 52px; line-height: 1.18; letter-spacing: 2px; }
.hero h1 .accent { color: var(--jade-deep); }
.hero .sub { font-size: 19px; color: var(--ink-2); margin: 18px 0; }
.hero .tags { display: flex; gap: 10px; flex-wrap: wrap; margin: 18px 0 28px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-card {
  background: var(--card); border-radius: 22px; padding: 26px;
  box-shadow: var(--shadow-lg); border: 1px solid var(--line);
}
.hero-card h3 { font-size: 17px; margin-bottom: 14px; color: var(--ink); }
.hero-card .row { display: flex; justify-content: space-between; padding: 9px 0; border-bottom: 1px dashed var(--line); font-size: 14px; }
.hero-card .row:last-child { border-bottom: none; }
.hero-card .row b { color: var(--jade-deep); }
.yinyang { width: 70px; height: 70px; }

/* ---------- 体质网格 ---------- */
.grid-9 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.tz-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 20px; text-align: center; cursor: pointer; transition: transform .18s, box-shadow .2s, border-color .2s;
}
.tz-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--jade); }
.tz-card .ic { font-size: 34px; margin-bottom: 8px; }
.tz-card h4 { font-size: 17px; font-family: "Noto Serif SC", serif; }
.tz-card p { font-size: 13px; color: var(--muted); margin-top: 4px; }

/* ---------- 功能卡 ---------- */
.feat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.feat {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; transition: transform .18s, box-shadow .2s;
}
.feat:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.feat .ic { width: 52px; height: 52px; border-radius: 14px; background: var(--jade-soft); color: var(--jade-deep);
  display: grid; place-items: center; font-size: 26px; margin-bottom: 14px; }
.feat h3 { font-size: 20px; margin-bottom: 6px; }
.feat p { color: var(--ink-2); font-size: 14px; margin-bottom: 14px; }
.feat .go { color: var(--jade-deep); font-weight: 500; font-size: 14px; }

/* ---------- 智能体 ---------- */
.agent-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.agent-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 22px;
  transition: transform .18s, box-shadow .2s;
}
.agent-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.agent-card .ic { font-size: 30px; }
.agent-card h4 { font-size: 17px; margin: 8px 0 4px; }
.agent-card .d { font-size: 13px; color: var(--jade-deep); font-weight: 500; }
.agent-card p { font-size: 13px; color: var(--muted); margin: 8px 0 12px; }

/* ---------- 页脚 ---------- */
.footer { background: #16251f; color: #cfd9d3; padding: 48px 6vw 28px; }
.footer .cols { max-width: 1180px; margin: 0 auto; display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 30px; }
.footer h5 { color: #fff; font-size: 15px; margin-bottom: 12px; }
.footer a { color: #aebcb5; font-size: 14px; display: block; padding: 4px 0; }
.footer a:hover { color: #fff; }
.footer .copy { max-width: 1180px; margin: 28px auto 0; padding-top: 16px; border-top: 1px solid #2b3b34; font-size: 13px; color: #8a9a92; }
.footer .brand b { color: #fff; }

/* ---------- 测评 ---------- */
.quiz-wrap { max-width: 760px; margin: 0 auto; }
.progress { height: 10px; background: var(--jade-soft); border-radius: 999px; overflow: hidden; margin: 24px 0; }
.progress > i { display: block; height: 100%; background: linear-gradient(90deg, var(--jade), var(--gold)); width: 0; transition: width .3s; }
.q-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow); }
.q-card .qno { color: var(--jade-deep); font-weight: 600; font-size: 14px; }
.q-card .qt { font-size: 21px; font-family: "Noto Serif SC", serif; margin: 8px 0 22px; }
.opts { display: grid; gap: 12px; }
.opt {
  border: 1px solid var(--line); border-radius: 12px; padding: 14px 18px; cursor: pointer;
  font-size: 15px; transition: all .15s; display: flex; justify-content: space-between; align-items: center;
}
.opt:hover { border-color: var(--jade); background: var(--jade-soft); }
.opt.sel { border-color: var(--jade); background: var(--jade); color: #fff; }
.opt .dot { width: 16px; height: 16px; border-radius: 50%; border: 2px solid var(--muted); }
.opt.sel .dot { border-color: #fff; background: #fff; }
.quiz-nav { display: flex; justify-content: space-between; margin-top: 22px; }

/* 结果 */
.result-hero { text-align: center; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 34px; box-shadow: var(--shadow); }
.result-hero .big { font-size: 30px; font-family: "Noto Serif SC", serif; color: var(--jade-deep); }
.bars { margin: 26px 0; }
.bar-row { display: grid; grid-template-columns: 90px 1fr 44px; align-items: center; gap: 12px; margin: 10px 0; font-size: 14px; }
.bar-row .track { height: 12px; background: var(--jade-soft); border-radius: 999px; overflow: hidden; }
.bar-row .fill { height: 100%; border-radius: 999px; transition: width .8s ease; }
.advice-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 20px; text-align: left; }
.advice { background: var(--cream); border: 1px solid var(--line); border-radius: 12px; padding: 16px; }
.advice h5 { color: var(--jade-deep); font-size: 14px; margin-bottom: 6px; }
.advice ul { list-style: none; font-size: 14px; color: var(--ink-2); }
.advice li { padding: 3px 0; padding-left: 16px; position: relative; }
.advice li::before { content: "·"; color: var(--jade); position: absolute; left: 4px; }

/* ---------- 五运六气 ---------- */
.wy-form { display: flex; gap: 14px; flex-wrap: wrap; align-items: flex-end; max-width: 560px; margin: 0 auto 30px; }
.field { display: flex; flex-direction: column; gap: 6px; font-size: 14px; color: var(--ink-2); }
.field input { padding: 11px 14px; border: 1px solid var(--line); border-radius: 10px; font-size: 15px; background: #fff; }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
.panel .top { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 20px; }
.tag-big { background: var(--jade-soft); color: var(--jade-deep); border-radius: 12px; padding: 14px 18px; font-size: 15px; }
.tag-big b { display: block; font-size: 19px; font-family: "Noto Serif SC", serif; margin-top: 2px; }
.steps-table { width: 100%; border-collapse: collapse; margin-top: 10px; font-size: 14px; }
.steps-table th, .steps-table td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; }
.steps-table th { background: var(--cream); color: var(--ink-2); font-weight: 600; }
.steps-table tr.si td, .steps-table tr.zai td { background: var(--gold-soft); }
.advice-list { margin-top: 18px; background: var(--cream); border-radius: 12px; padding: 18px 20px; }
.advice-list li { margin: 8px 0; color: var(--ink-2); list-style: none; padding-left: 18px; position: relative; }
.advice-list li::before { content: "❖"; color: var(--jade); position: absolute; left: 0; }

/* ---------- 问诊 ---------- */
.chat-layout { display: grid; grid-template-columns: 240px 1fr; gap: 20px; max-width: 1100px; margin: 0 auto; }
.agent-side { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; height: fit-content; }
.agent-side h5 { font-size: 13px; color: var(--muted); margin-bottom: 10px; }
.agent-btn { display: flex; align-items: center; gap: 10px; width: 100%; padding: 10px 12px; border-radius: 10px; border: 1px solid transparent; background: transparent; cursor: pointer; text-align: left; font-size: 14px; margin-bottom: 6px; }
.agent-btn:hover { background: var(--cream); }
.agent-btn.active { background: var(--jade-soft); border-color: var(--jade); }
.agent-btn .ic { font-size: 20px; }
.chat-box { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); display: flex; flex-direction: column; height: 64vh; }
.chat-head { padding: 16px 20px; border-bottom: 1px solid var(--line); font-weight: 600; display: flex; align-items: center; gap: 10px; }
.chat-head .ic { font-size: 22px; }
.chat-msgs { flex: 1; overflow-y: auto; padding: 20px; display: flex; flex-direction: column; gap: 14px; }
.msg { max-width: 82%; padding: 12px 16px; border-radius: 14px; font-size: 15px; white-space: pre-wrap; }
.msg.ai { background: var(--cream); align-self: flex-start; border-bottom-left-radius: 4px; }
.msg.me { background: var(--jade); color: #fff; align-self: flex-end; border-bottom-right-radius: 4px; }
.chat-input { display: flex; gap: 10px; padding: 14px; border-top: 1px solid var(--line); }
.chat-input input { flex: 1; padding: 12px 16px; border: 1px solid var(--line); border-radius: 999px; font-size: 15px; }
.typing span { display: inline-block; width: 6px; height: 6px; background: var(--muted); border-radius: 50%; margin: 0 2px; animation: blink 1.2s infinite; }
.typing span:nth-child(2){ animation-delay:.2s } .typing span:nth-child(3){ animation-delay:.4s }
@keyframes blink { 0%,80%,100%{opacity:.2} 40%{opacity:1} }

/* ---------- 商城 ---------- */
.cat-bar { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-bottom: 28px; }
.cat-bar button { padding: 8px 18px; border-radius: 999px; border: 1px solid var(--line); background: #fff; cursor: pointer; font-size: 14px; }
.cat-bar button.active { background: var(--jade); color: #fff; border-color: var(--jade); }
.mall-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.p-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-sm); overflow: hidden; transition: transform .18s, box-shadow .2s; display: flex; flex-direction: column; }
.p-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.p-card .thumb { height: 130px; display: grid; place-items: center; font-size: 54px; background: linear-gradient(135deg, var(--jade-soft), var(--gold-soft)); }
.p-card .body { padding: 14px 16px; flex: 1; display: flex; flex-direction: column; }
.p-card .cat { font-size: 12px; color: var(--muted); }
.p-card h4 { font-size: 16px; margin: 4px 0 6px; }
.p-card .desc { font-size: 13px; color: var(--ink-2); flex: 1; }
.p-card .price { color: #e0533a; font-weight: 700; font-size: 18px; margin: 10px 0; }
.p-card .price s { color: var(--muted); font-weight: 400; font-size: 13px; margin-left: 6px; }
.p-card .add { background: var(--jade); color: #fff; border: none; border-radius: 10px; padding: 9px; cursor: pointer; font-size: 14px; }
.p-card .add:hover { background: var(--jade-deep); }

/* 预约弹窗 */
.modal-mask { position: fixed; inset: 0; background: rgba(20,30,26,.5); z-index: 200; display: grid; place-items: center; padding: 20px; }
.modal { background: #fff; border-radius: 18px; width: 100%; max-width: 460px; padding: 26px; box-shadow: var(--shadow-lg); max-height: 92vh; overflow: auto; }
.modal h3 { font-size: 20px; font-family: "Noto Serif SC", serif; }
.modal .svc { background: var(--jade-soft); border-radius: 12px; padding: 12px 14px; margin: 12px 0; font-size: 14px; color: var(--ink-2); }
.modal .svc b { color: var(--jade-deep); font-size: 16px; }
.form-row { margin-bottom: 14px; }
.form-row label { display: block; font-size: 14px; color: var(--ink-2); margin-bottom: 6px; }
.form-row input, .form-row textarea { width: 100%; padding: 11px 14px; border: 1px solid var(--line); border-radius: 10px; font-size: 15px; font-family: inherit; box-sizing: border-box; }
.form-row textarea { resize: vertical; }
.gender-opt { display: flex; gap: 10px; }
.gender-opt label { flex: 1; border: 1px solid var(--line); border-radius: 10px; padding: 10px; text-align: center; cursor: pointer; font-size: 15px; transition: all .15s; }
.gender-opt input { display: none; }
.gender-opt label.sel { border-color: var(--jade); background: var(--jade-soft); color: var(--jade-deep); font-weight: 500; }
.modal-err { color: #e0533a; font-size: 13px; min-height: 18px; margin-bottom: 8px; }

.section-title { font-size: 26px; font-family: "Noto Serif SC", serif; margin-bottom: 6px; }
.lead { color: var(--ink-2); margin-bottom: 24px; }
.page { min-height: 60vh; }
.empty { text-align: center; color: var(--muted); padding: 40px; }

/* ---------- 管理后台 ---------- */
.admin-note { background: var(--jade-soft); border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px; font-size: 13px; color: var(--ink-2); margin-bottom: 18px; }
.admin-note code { background: #fff; padding: 1px 7px; border-radius: 6px; border: 1px solid var(--line); font-size: 12px; }
.admin-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 18px; }
.admin-stats .stat { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px; text-align: center; box-shadow: var(--shadow); }
.admin-stats .stat b { display: block; font-size: 26px; color: var(--jade-deep); font-family: "Noto Serif SC", serif; }
.admin-stats .stat span { font-size: 13px; color: var(--muted); }
.tabs { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; }
.tabs .tab { padding: 9px 18px; border-radius: 999px; border: 1px solid var(--line); background: #fff; cursor: pointer; font-size: 14px; transition: all .15s; }
.tabs .tab:hover { border-color: var(--jade); }
.tabs .tab.active { background: var(--jade); color: #fff; border-color: var(--jade); }
.status-badge { display:inline-block; padding:2px 10px; border-radius:999px; font-size:12px; font-weight:600; line-height:1.6; }
.status-badge.s-new       { background:#f0f1f3; color:#5b6470; }
.status-badge.s-contacted { background:#fff5d6; color:#a07000; }
.status-badge.s-done      { background:#d8efe1; color:#157a4a; }
.status-badge.s-cancel    { background:#fde2e2; color:#b5322d; }
.row-ops { display:flex; gap:6px; align-items:center; flex-wrap:wrap; }
.row-ops .op-status { padding:4px 8px; border:1px solid #d9d9d9; border-radius:6px; background:#fff; font-size:12px; }
.row-ops .btn-mini { padding:4px 10px; border:1px solid #d9d9d9; border-radius:6px; background:#fff; cursor:pointer; font-size:12px; }
.row-ops .btn-mini:hover { background:#f5f7f6; }
.row-ops .btn-mini.danger { color:#b5322d; border-color:#f1c5c2; }
.row-ops .btn-mini.danger:hover { background:#fdecec; }
.ops-cell { white-space:nowrap; }
.steps-table td.ops-cell { padding:8px 12px; }
.toast { position:fixed; left:50%; bottom:36px; transform:translateX(-50%); background:rgba(28,33,40,.92); color:#fff; padding:10px 18px; border-radius:8px; font-size:14px; z-index:9999; box-shadow:0 6px 18px rgba(0,0,0,.18); }
.toast.err { background:rgba(160,40,30,.95); }

/* 艾灸调理专题（预约到家内联） */
.moxa-block { margin-top:36px; padding:28px; background:linear-gradient(160deg,#f3faf5,#eef7f1); border:1px solid #dcebe1; border-radius:16px; }
.moxa-head h3 { margin:0 0 8px; color:var(--jade,#157a4a); font-size:22px; }
.moxa-lead { margin:0 0 20px; color:var(--muted,#5b6470); font-size:14px; line-height:1.7; }
.moxa-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:14px; }
.moxa-card { background:#fff; border:1px solid #e4eee8; border-radius:12px; padding:16px; }
.moxa-ic { font-size:24px; margin-bottom:8px; }
.moxa-card h4 { margin:0 0 6px; font-size:15px; color:#1c2128; }
.moxa-card p { margin:0; font-size:13px; color:var(--muted,#5b6470); line-height:1.6; }
.moxa-cta { display:flex; align-items:center; gap:12px; flex-wrap:wrap; margin-top:22px; padding-top:18px; border-top:1px dashed #cfe0d6; }
.moxa-cta-tip { font-size:14px; color:#1c2128; font-weight:600; }
.moxa-cta .add { margin:0; }
@media (max-width:760px){ .moxa-grid { grid-template-columns:repeat(2,1fr); } }

/* 后台登录 */
.admin-login-card { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 30px 28px; box-shadow: var(--shadow); margin-top: 40px; }
.admin-login-card .section-title { text-align: center; }
.admin-login-card .lead { text-align: center; color: var(--muted); margin-bottom: 20px; }
.admin-login-card .form-input { width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; font-size: 15px; box-sizing: border-box; }
.admin-login-card .btn-primary { background: var(--jade); color: #fff; border: none; border-radius: 10px; padding: 12px; font-size: 15px; cursor: pointer; }
.admin-err { color: #d9534f; font-size: 13px; margin-top: 12px; min-height: 18px; text-align: center; }
.beian { margin-top: 8px; font-size: 13px; }
.beian a { color: var(--muted); text-decoration: none; }
.beian a:hover { color: var(--jade); }
.user-card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; box-shadow: var(--shadow); margin-bottom: 14px; }
.user-card .user-head { font-size: 15px; color: var(--ink); display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.user-card .user-count { margin-left: auto; background: var(--gold-soft); color: var(--jade-deep); border-radius: 999px; padding: 3px 12px; font-size: 12px; }
.user-card .user-items { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }

/* 保存到档案 / 模型配置 表单 */
.save-box { background: var(--cream); border: 1px solid var(--line); border-radius: 14px; padding: 18px; margin: 18px 0 6px; text-align: left; }
.save-box h4 { font-size: 16px; font-family: "Noto Serif SC", serif; margin-bottom: 4px; color: var(--ink); }
.save-tip { font-size: 13px; color: var(--muted); margin-bottom: 12px; }

/* 问诊 模型引擎条 + 按钮 */
.engine-bar { font-size: 12.5px; color: var(--ink-2); background: var(--jade-soft); border-bottom: 1px solid var(--line); padding: 8px 20px; }
.engine-bar b { color: var(--jade-deep); }
.engine-btn { margin-left: auto; background: #fff; border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px; font-size: 13px; cursor: pointer; color: var(--jade-deep); transition: all .15s; }
.engine-btn:hover { border-color: var(--jade); background: var(--jade-soft); }
.chat-head { display: flex; align-items: center; gap: 10px; }

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .grid-9, .agent-grid { grid-template-columns: repeat(2, 1fr); }
  .feat-grid, .mall-grid, .advice-grid { grid-template-columns: 1fr; }
  .chat-layout { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .hero h1 { font-size: 38px; }
}