:root{
  --blue:#1B5BFF;
  --blue-dark:#0B3BD1;
  --cyan:#00C2FF;
  --ink:#0A1F44;
  --text:#1D2939;
  --muted:#667085;
  --muted-light:#98A2B3;
  --line:#E4E7EC;
  --line-soft:#EEF2F7;
  --bg:#F5F8FF;
  --surface:#FFFFFF;
  --soft:#EAF1FF;
  --green:#12B76A;
  --orange:#F79009;
  --violet:#7A5AF8;
  --shadow-sm:0 8px 24px rgba(10,31,68,.06);
  --shadow-md:0 20px 50px rgba(10,31,68,.10);
  --shadow-lg:0 40px 100px rgba(10,31,68,.18);
  --radius:18px;
  --radius-lg:26px;
  --container:1180px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  color:var(--text);
  background:var(--surface);
  font-size:16px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit}
h1,h2,h3,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
::selection{background:#C9DBFF;color:var(--ink)}
:focus-visible{outline:3px solid rgba(27,91,255,.35);outline-offset:3px;border-radius:6px}

.container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
section[id]{scroll-margin-top:94px}
.skip-link{
  position:fixed;left:16px;top:-60px;z-index:100;
  background:var(--ink);color:#fff;padding:10px 16px;border-radius:10px;
  transition:top .2s ease;
}
.skip-link:focus{top:14px}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 20px;border:1px solid transparent;border-radius:12px;
  font-size:15px;font-weight:650;line-height:1;cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease;
}
.btn svg{flex:0 0 auto}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:linear-gradient(135deg,var(--blue),#3D74FF);color:#fff;box-shadow:0 12px 28px rgba(27,91,255,.28)}
.btn-primary:hover{box-shadow:0 16px 34px rgba(27,91,255,.36)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink);box-shadow:var(--shadow-sm)}
.btn-ghost:hover{border-color:#C7D4F8;color:var(--blue)}
.btn-soft{background:var(--soft);color:var(--blue)}
.btn-soft:hover{background:#DEE9FF}
.btn-white{background:#fff;color:var(--blue-dark);box-shadow:0 14px 34px rgba(4,14,38,.20)}
.btn-outline-light{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.34);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.55)}
.btn-sm{height:38px;padding:0 15px;font-size:14px;border-radius:10px}
.btn-lg{height:52px;padding:0 24px;font-size:16px;border-radius:13px}
.btn-block{width:100%}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.82);
  backdrop-filter:saturate(160%) blur(18px);
  -webkit-backdrop-filter:saturate(160%) blur(18px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.site-header.scrolled{
  background:rgba(255,255,255,.94);
  border-bottom-color:rgba(228,231,236,.9);
  box-shadow:0 10px 30px rgba(10,31,68,.05);
}
.header-inner{height:76px;display:flex;align-items:center;gap:40px}
.brand{display:inline-flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--blue) 10%,#00A3FF 60%,var(--cyan));
  color:#fff;font-weight:800;font-size:19px;letter-spacing:-1px;
  box-shadow:0 8px 20px rgba(27,91,255,.28);
}
.brand-mark.small{width:28px;height:28px;border-radius:8px;font-size:14px;box-shadow:none}
.brand-name{font-size:19px;font-weight:760;letter-spacing:-.5px;color:var(--ink);display:flex;align-items:baseline;gap:8px}
.brand-sub{font-size:11px;font-weight:600;letter-spacing:1.5px;color:var(--muted);text-transform:uppercase}
.site-nav{display:flex;align-items:center;gap:30px;margin-left:auto}
.site-nav > a{font-size:14px;color:#475467;font-weight:550;position:relative;padding:8px 0}
.site-nav > a::after{
  content:"";position:absolute;left:0;right:0;bottom:1px;height:2px;border-radius:2px;
  background:var(--blue);transform:scaleX(0);transform-origin:left;transition:transform .18s ease;
}
.site-nav > a:hover{color:var(--ink)}
.site-nav > a:hover::after{transform:scaleX(1)}
.nav-mobile-actions{display:none}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.locale-select{height:32px;border:1px solid var(--line,#E4E7EC);border-radius:999px;background:#fff;color:var(--text,#1D2939);font:inherit;font-size:12px;padding:0 10px;cursor:pointer}
.header-link{font-size:14px;color:#475467;font-weight:550;padding:8px 4px}
.header-link:hover{color:var(--blue)}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:11px;
  background:#fff;cursor:pointer;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s ease,opacity .2s ease}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
body.nav-open .nav-toggle span:nth-child(2){opacity:0}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{position:relative;padding:86px 0 64px;overflow:hidden;background:linear-gradient(180deg,#F8FAFF 0%,#F5F8FF 68%,#FFFFFF 100%)}
.hero-glow{
  position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(720px 440px at 76% 34%,rgba(27,91,255,.13),transparent 66%),
    radial-gradient(520px 340px at 18% 18%,rgba(0,194,255,.10),transparent 70%),
    radial-gradient(420px 300px at 55% 90%,rgba(122,90,248,.06),transparent 70%);
}
.hero-grid-bg{
  position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:linear-gradient(rgba(27,91,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(27,91,255,.055) 1px,transparent 1px);
  background-size:72px 72px;
  mask-image:radial-gradient(closest-side at 60% 34%,#000 45%,transparent 100%);
  -webkit-mask-image:radial-gradient(closest-side at 60% 34%,#000 45%,transparent 100%);
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.02fr .98fr;gap:64px;align-items:center;z-index:1}
.hero-copy{max-width:590px}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;margin-bottom:22px;
  padding:7px 13px;border:1px solid #D7E3FF;border-radius:999px;
  background:rgba(255,255,255,.75);color:var(--blue-dark);
  font-size:12px;font-weight:650;letter-spacing:.3px;box-shadow:0 6px 18px rgba(27,91,255,.06);
}
.pulse{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px rgba(18,183,106,.14);animation:pulse 2.4s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 4px rgba(18,183,106,.14)}50%{box-shadow:0 0 0 7px rgba(18,183,106,.05)}}
.hero h1{
  font-size:clamp(44px,5.1vw,70px);line-height:1.06;letter-spacing:-2.6px;
  font-weight:780;color:var(--ink);margin:0 0 24px;
}
.grad-text{
  background:linear-gradient(100deg,var(--blue) 8%,#2D7BFF 48%,#00A8E8 92%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{max-width:560px;font-size:17px;line-height:1.8;color:#536072}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:32px 0 26px}
.hero-points{display:flex;flex-direction:column;gap:9px;color:#475467;font-size:13.5px}
.hero-points li{display:flex;align-items:center;gap:8px}
.hero-points svg{width:16px;height:16px;stroke:var(--blue);fill:none;stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto}
.hero-note{margin-top:30px;display:flex;align-items:center;gap:12px;font-size:12px;color:var(--muted)}
.mini-avatars{display:flex}
.mini-avatars i{
  width:27px;height:27px;border-radius:50%;border:2px solid #fff;margin-left:-7px;
  display:flex;align-items:center;justify-content:center;font-style:normal;
  background:linear-gradient(135deg,#DCE8FF,#B9D2FF);color:var(--blue-dark);font-size:10px;font-weight:700;
}
.mini-avatars i:first-child{margin-left:0;background:linear-gradient(135deg,#0A1F44,#254E9E);color:#fff}
.mini-avatars i:last-child{background:linear-gradient(135deg,#D9F7EA,#A9EBD0);color:#087443}

/* ---------- Hero product mock ---------- */
.hero-visual{position:relative;min-width:0}
.hero-connector{position:absolute;inset:-70px -60px;z-index:0;pointer-events:none;opacity:.9}
.hero-connector svg{width:100%;height:100%;animation:spin 60s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.product-window{
  position:relative;z-index:1;
  background:#fff;border:1px solid rgba(214,224,245,.9);border-radius:22px;
  box-shadow:var(--shadow-lg);overflow:hidden;
  transform:perspective(1400px) rotateY(-2deg) rotateX(1deg);
  transform-origin:center left;
}
.window-bar{
  height:38px;display:flex;align-items:center;gap:12px;padding:0 14px;
  background:linear-gradient(180deg,#FBFCFE,#F4F7FC);border-bottom:1px solid #E8EDF6;
}
.window-dots{display:flex;gap:5px}
.window-dots i{width:7px;height:7px;border-radius:50%;background:#D6DEEB}
.window-dots i:nth-child(1){background:#FFB4A8}
.window-dots i:nth-child(2){background:#FFDA9E}
.window-dots i:nth-child(3){background:#A8E6C1}
.window-url{
  flex:1;max-width:250px;margin:0 auto;height:23px;border-radius:6px;background:#fff;
  border:1px solid #E9EEF6;display:flex;align-items:center;justify-content:center;gap:5px;
  font-size:9px;color:#8A94A6;letter-spacing:.2px;
}
.window-url svg{width:10px;height:10px;stroke:#9AA5B5;fill:none;stroke-width:2}
.window-live{display:flex;align-items:center;gap:5px;font-size:9px;color:#0B8A5B;font-weight:600}
.window-live i{width:5px;height:5px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px rgba(18,183,106,.12)}
.app-window{display:grid;grid-template-columns:126px minmax(0,1fr) 148px;height:392px;font-size:10px}
.app-side{background:linear-gradient(180deg,#0B214A,#071631);color:#fff;padding:13px 10px;display:flex;flex-direction:column;min-width:0}
.app-brand{display:flex;align-items:center;gap:7px;padding:0 4px 12px}
.app-brand b{display:block;font-size:10px;letter-spacing:-.2px}
.app-brand small{display:block;font-size:8px;color:rgba(255,255,255,.45);margin-top:1px}
.app-menu{display:flex;flex-direction:column;gap:2px;margin-bottom:15px}
.app-menu span{display:flex;align-items:center;gap:7px;height:26px;padding:0 8px;border-radius:6px;color:rgba(255,255,255,.58);font-size:9px}
.app-menu svg{width:11px;height:11px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.app-menu span.active{background:var(--blue);color:#fff;font-weight:600}
.app-side-label{display:flex;justify-content:space-between;align-items:center;padding:0 5px 6px;color:rgba(255,255,255,.38);font-size:8px;letter-spacing:.4px}
.app-side-label em{font-style:normal;background:rgba(255,255,255,.12);border-radius:4px;padding:0 4px;font-size:7px}
.side-conv{display:flex;align-items:center;gap:6px;padding:6px 5px;border-radius:7px;margin-bottom:2px;position:relative}
.side-conv.active{background:rgba(255,255,255,.09)}
.side-conv b{display:block;font-size:8.5px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.side-conv small{display:block;font-size:7.5px;color:rgba(255,255,255,.38);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:1px;max-width:70px}
.conv-avatar{
  width:27px;height:27px;border-radius:50%;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#DCE8FF,#AFCBFF);color:#123A8C;font-weight:700;font-size:9px;
}
.conv-avatar.big{width:32px;height:32px;font-size:10px}
.conv-avatar.mint{background:linear-gradient(135deg,#D7F8EA,#A4E9CD);color:#087443}
.conv-avatar.orange{background:linear-gradient(135deg,#FFEBD1,#FFD39B);color:#9A5B00}
.conv-avatar.small-avatar{width:26px;height:26px}
.conv-dot{position:absolute;right:6px;top:50%;transform:translateY(-50%);width:5px;height:5px;border-radius:50%;background:#37D39A}
.conv-badge{font-size:7px;background:#FF5D5D;color:#fff;border-radius:999px;min-width:13px;height:13px;display:flex;align-items:center;justify-content:center;padding:0 3px;margin-left:auto}
.app-chat{display:flex;flex-direction:column;min-width:0;background:#fff}
.chat-head{display:flex;align-items:center;gap:7px;padding:11px 12px;border-bottom:1px solid #EEF2F7;min-height:52px}
.chat-head > div{min-width:0;flex:1}
.chat-head b{display:block;font-size:10px;color:var(--ink);font-weight:650}
.chat-head small{display:block;font-size:7.5px;color:#98A2B3;margin-top:1px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pill{display:inline-flex;align-items:center;height:18px;padding:0 7px;border-radius:999px;font-size:7.5px;font-weight:600;flex:0 0 auto}
.pill.online{background:#E8F9F0;color:#07854F}
.pill.soft{background:#EDF3FF;color:#2358C9}
.chat-stream{flex:1;padding:12px 13px 8px;overflow:hidden;background:linear-gradient(180deg,#FCFDFF,#F9FBFF);position:relative}
.chat-day{text-align:center;color:#A9B2C0;font-size:7.5px;margin-bottom:9px}
.bubble-row{display:flex;margin-bottom:8px}
.bubble-row.agent{justify-content:flex-end}
.bubble{
  max-width:84%;padding:8px 10px;border-radius:10px 10px 10px 3px;
  background:#fff;border:1px solid #E7EDF7;color:#344054;font-size:9px;line-height:1.55;
  box-shadow:0 3px 8px rgba(10,31,68,.035);
}
.bubble-row.agent .bubble{
  background:linear-gradient(135deg,var(--blue),#3D74FF);border-color:transparent;color:#fff;
  border-radius:10px 10px 3px 10px;box-shadow:0 6px 14px rgba(27,91,255,.20);
}
.internal-note{
  display:flex;align-items:flex-start;gap:5px;margin:0 auto 9px;max-width:88%;
  background:#FFF8E8;border:1px solid #FFE7B3;border-radius:6px;padding:5px 7px;
  color:#8A5A00;font-size:7.5px;line-height:1.45;
}
.internal-note svg{width:9px;height:9px;stroke:#B77900;fill:none;stroke-width:1.8;flex:0 0 auto;margin-top:1px}
.typing{display:flex;align-items:center;gap:3px;color:#98A2B3;font-size:7.5px;padding:2px 3px}
.typing span{width:3px;height:3px;border-radius:50%;background:#A9B6CB;animation:bounce 1.2s infinite}
.typing span:nth-child(2){animation-delay:.15s}
.typing span:nth-child(3){animation-delay:.3s;margin-right:3px}
@keyframes bounce{0%,60%,100%{transform:translateY(0);opacity:.4}30%{transform:translateY(-3px);opacity:1}}
.chat-compose{
  height:42px;border-top:1px solid #EEF2F7;display:flex;align-items:center;gap:6px;
  padding:0 10px;color:#A9B2C0;font-size:8.5px;background:#fff;
}
.chat-compose > span:first-child{flex:1}
.compose-tools{display:flex;gap:6px}
.compose-tools i{width:11px;height:11px;border:1.5px solid #C6D0DF;border-radius:3px}
.chat-compose button{height:25px;border:0;border-radius:6px;background:var(--blue);color:#fff;font-size:8px;padding:0 9px;font-weight:600}
.app-profile{background:#F8FAFE;border-left:1px solid #EDF1F8;padding:16px 12px;min-width:0}
.profile-avatar{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,#DCE8FF,#AFCBFF);display:flex;align-items:center;justify-content:center;color:#123A8C;font-weight:700;font-size:12px;margin-bottom:7px}
.app-profile > b{display:block;font-size:10px;color:var(--ink)}
.app-profile > small{display:block;font-size:7.5px;color:#98A2B3;margin:1px 0 12px}
.profile-block{border-top:1px solid #E9EEF6;padding-top:9px;margin-bottom:9px}
.profile-block > span{display:block;font-size:7.5px;color:#98A2B3;margin-bottom:5px}
.profile-block em{display:inline-flex;font-style:normal;background:#EAF1FF;color:#2358C9;border-radius:4px;padding:1px 5px;font-size:7px;margin-right:3px}
.profile-row{display:flex;justify-content:space-between;align-items:center;padding:5px 0;font-size:8px;color:#7B8798;border-bottom:1px dashed #E9EEF6}
.profile-row b{font-weight:600;color:var(--ink);font-size:8px}
.profile-row .star-value{color:#B77900}
.profile-action{margin-top:11px;height:24px;border-radius:6px;background:#fff;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:7.5px;color:#475467}
.float-card{
  position:absolute;z-index:2;display:flex;align-items:center;gap:9px;
  background:rgba(255,255,255,.96);border:1px solid rgba(218,229,248,.95);
  border-radius:14px;padding:10px 13px;box-shadow:0 18px 42px rgba(10,31,68,.14);
  backdrop-filter:blur(10px);
}
.float-card strong{display:block;font-size:15px;line-height:1.1;color:var(--ink);letter-spacing:-.4px}
.float-card span:not(.float-icon):not(.float-live){display:block;font-size:8px;color:var(--muted);margin-top:2px}
.float-icon{width:30px;height:30px;border-radius:9px;background:#EAF1FF;display:flex;align-items:center;justify-content:center}
.float-icon svg{width:15px;height:15px;stroke:var(--blue);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.float-icon.amber{background:#FFF6E5}
.float-icon.amber svg{stroke:#B77900}
.float-live{width:31px;height:31px;border-radius:50%;background:#E8F9F0;display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.float-live i{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 0 5px rgba(18,183,106,.12)}
.float-a{left:-26px;top:74px;animation:float 6.4s ease-in-out infinite}
.float-b{right:-30px;bottom:88px;animation:float 7.2s ease-in-out .8s infinite}
.float-c{right:20px;top:-24px;animation:float 6.8s ease-in-out .4s infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-7px)}}

/* ---------- Scenario strip ---------- */
.scenario-strip{
  position:relative;z-index:1;margin-top:66px;padding-top:28px;
  border-top:1px solid rgba(215,226,245,.8);
  display:flex;align-items:center;gap:28px;flex-wrap:wrap;
}
.scenario-label{font-size:12px;color:var(--muted);letter-spacing:.5px;flex:0 0 auto}
.scenario-list{display:flex;align-items:center;gap:24px;flex-wrap:wrap}
.scenario-list span{display:flex;align-items:center;gap:7px;color:#5D6B80;font-size:13px;font-weight:550}
.scenario-list svg{width:16px;height:16px;stroke:#8FA3C4;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}

/* ---------- Sections ---------- */
.section{padding:104px 0;position:relative}
.section-head{max-width:720px;margin-bottom:46px}
.section-head.center{text-align:center;margin-left:auto;margin-right:auto}
.kicker{
  display:inline-flex;align-items:center;gap:7px;margin:0 0 14px;
  color:var(--blue);font-size:12px;font-weight:700;letter-spacing:2px;text-transform:uppercase;
}
.kicker::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--blue)}
.kicker.light{color:#85AAFF}
.kicker.light::before{background:#85AAFF}
.section h2{font-size:clamp(31px,3.6vw,46px);line-height:1.15;letter-spacing:-1.5px;color:var(--ink);font-weight:760}
.section-lead{color:#5B687B;font-size:16px;line-height:1.8;max-width:640px;margin-top:16px}
.section-head.center .section-lead{margin-left:auto;margin-right:auto}

/* ---------- Features ---------- */
.features{background:#fff}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feature-card{
  background:linear-gradient(180deg,#fff,#FCFDFF);
  border:1px solid var(--line);border-radius:var(--radius);padding:27px 26px 24px;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  position:relative;overflow:hidden;
}
.feature-card::after{
  content:"";position:absolute;right:-40px;top:-40px;width:120px;height:120px;border-radius:50%;
  background:radial-gradient(circle,rgba(27,91,255,.07),transparent 70%);opacity:0;transition:opacity .22s ease;
}
.feature-card:hover{transform:translateY(-4px);border-color:#CBD9F7;box-shadow:var(--shadow-md)}
.feature-card:hover::after{opacity:1}
.feature-icon{
  width:46px;height:46px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  margin-bottom:18px;background:#EAF1FF;
}
.feature-icon svg{width:23px;height:23px;stroke:currentColor;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.feature-icon.blue{color:#1B5BFF;background:#EAF1FF}
.feature-icon.cyan{color:#0093C4;background:#E4F8FF}
.feature-icon.violet{color:#6741E8;background:#F0EBFF}
.feature-icon.green{color:#079455;background:#E8F9F0}
.feature-icon.orange{color:#B76E00;background:#FFF4E3}
.feature-icon.navy{color:#123A8C;background:#E8EEFA}
.feature-card h3{font-size:18px;letter-spacing:-.3px;margin:0 0 9px;color:var(--ink)}
.feature-card p{color:#667085;font-size:13.5px;line-height:1.75;margin:0}
.feature-tag{
  display:inline-flex;margin-top:16px;padding:3px 9px;border-radius:999px;
  background:#F2F5FA;color:#5D6B80;font-size:10.5px;font-weight:600;letter-spacing:.3px;
}

/* ---------- Dark workbench ---------- */
.dark-section{
  background:linear-gradient(135deg,#06132B 0%,#0A1F44 55%,#0D2A62 100%);
  color:#fff;overflow:hidden;
}
.dark-glow{
  position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(600px 360px at 18% 30%,rgba(27,91,255,.24),transparent 70%),
    radial-gradient(520px 320px at 88% 70%,rgba(0,194,255,.10),transparent 70%);
}
.dark-section .container{position:relative;z-index:1}
.workbench-grid{display:grid;grid-template-columns:.94fr 1.06fr;gap:72px;align-items:center}
.workbench-copy h2{color:#fff}
.workbench-copy > p{color:rgba(255,255,255,.64);font-size:16px;line-height:1.8;margin-top:18px;max-width:500px}
.check-list{margin-top:30px;display:flex;flex-direction:column;gap:19px}
.check-list li{display:flex;gap:14px;align-items:flex-start}
.check-list li > span{
  width:31px;height:31px;flex:0 0 auto;border-radius:9px;
  border:1px solid rgba(133,170,255,.28);background:rgba(27,91,255,.16);
  color:#A9C4FF;font-size:10px;font-weight:700;display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.check-list b{display:block;color:#fff;font-size:14.5px;margin-bottom:3px}
.check-list p{color:rgba(255,255,255,.52);font-size:12.5px;line-height:1.7;margin:0;max-width:430px}
.text-link{display:inline-flex;align-items:center;gap:7px;color:var(--blue);font-weight:650;font-size:14px;margin-top:26px}
.text-link svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s ease}
.text-link:hover svg{transform:translateX(3px)}
.text-link.light{color:#9FC0FF}
.workbench-visual{position:relative;min-height:470px}
.mock-panel{
  background:#fff;border-radius:19px;box-shadow:0 34px 80px rgba(2,9,25,.42);
  color:var(--text);overflow:hidden;border:1px solid rgba(255,255,255,.7);
}
.queue-panel{position:relative;z-index:2;width:100%;max-width:520px;transform:rotate(-1.1deg)}
.agent-panel{position:absolute;right:0;bottom:-18px;width:84%;max-width:420px;z-index:3;transform:rotate(1.2deg)}
.mock-panel-head{display:flex;align-items:flex-start;justify-content:space-between;padding:17px 18px 13px;border-bottom:1px solid #F0F3F8}
.mock-panel-head b{display:block;font-size:13px;color:var(--ink);letter-spacing:-.2px}
.mock-panel-head small{display:block;font-size:10px;color:#98A2B3;margin-top:2px}
.mock-live{display:flex;align-items:center;gap:5px;font-size:9px;color:#07854F;background:#E8F9F0;border-radius:999px;padding:3px 8px;font-weight:600}
.mock-live i{width:5px;height:5px;border-radius:50%;background:var(--green)}
.mock-count{font-size:9px;color:#667085;background:#F2F5FA;border-radius:999px;padding:3px 8px}
.queue-row{display:flex;align-items:center;gap:10px;padding:12px 18px;border-bottom:1px solid #F4F6FA}
.queue-main{min-width:0;flex:1}
.queue-main b{display:block;font-size:11.5px;color:var(--ink)}
.queue-main small{display:block;font-size:9.5px;color:#98A2B3;margin-top:1px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.wait-pill{font-size:9px;font-weight:600;color:#8A5A00;background:#FFF8E8;border:1px solid #FFE7B3;border-radius:999px;padding:3px 7px;white-space:nowrap}
.wait-pill.hot{color:#B42318;background:#FFF1F0;border-color:#FFD4CF}
.queue-agent{font-size:9px;color:#2358C9;background:#EDF3FF;border-radius:5px;padding:3px 6px;white-space:nowrap}
.queue-agent.muted{color:#98A2B3;background:#F5F7FA}
.queue-foot{display:flex;justify-content:space-between;padding:11px 18px;font-size:9px;color:#98A2B3;background:#FBFCFE}
.agent-row{display:flex;align-items:center;gap:10px;padding:10px 18px;border-bottom:1px solid #F4F6FA}
.agent-main{min-width:0;width:100px;flex:0 0 auto}
.agent-main b{display:block;font-size:10.5px;color:var(--ink)}
.agent-main small{display:block;font-size:8.5px;color:#98A2B3;margin-top:1px}
.load-bar{flex:1;height:5px;border-radius:99px;background:#EDF1F7;overflow:hidden}
.load-bar i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,#3D74FF,#7FA6FF)}
.load-bar.full i{background:linear-gradient(90deg,#F79009,#FDB022)}
.whisper-chip{
  display:flex;align-items:flex-start;gap:7px;margin:11px 16px 16px;padding:9px 11px;
  background:#FFF8E8;border:1px solid #FFE7B3;border-radius:9px;
  color:#8A5A00;font-size:9.5px;line-height:1.55;
}
.whisper-chip svg{width:11px;height:11px;stroke:#B77900;fill:none;stroke-width:1.8;flex:0 0 auto;margin-top:1px}

/* ---------- Steps ---------- */
.flow{background:linear-gradient(180deg,#fff,#F8FAFF)}
.step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;position:relative}
.step-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:25px 22px 23px;min-height:230px;transition:transform .2s ease,box-shadow .2s ease;
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.step-icon{
  position:absolute;right:20px;top:20px;width:23px;height:23px;
  stroke:#A7B7D2;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;
  opacity:.85;
}
.step-num{font-size:11px;font-weight:700;color:var(--blue);letter-spacing:1.5px;display:block;margin-bottom:44px;font-variant-numeric:tabular-nums}
.step-line{position:absolute;left:22px;right:22px;top:53px;height:1px;background:linear-gradient(90deg,#DCE6F8,transparent);display:none}
.step-card h3{font-size:16px;color:var(--ink);margin:0 0 8px;letter-spacing:-.2px}
.step-card p{font-size:12.5px;line-height:1.75;color:#667085;margin:0}
.step-card::before{
  content:"";position:absolute;left:22px;top:44px;width:7px;height:7px;border-radius:50%;
  background:#fff;border:2px solid #9DB8FF;
}
.step-card::after{
  content:"";position:absolute;left:29px;top:51px;width:0;height:0;
}
.step-card .step-line{top:47px;left:48px;right:20px;display:block;background:linear-gradient(90deg,#E2EAF9,transparent)}
.step-card:last-child .step-line{display:none}

/* ---------- Integration ---------- */
.integrate{background:#fff}
.integrate-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:70px;align-items:center}
.integrate-copy h2{margin-bottom:18px}
.integrate-copy > p{color:#5B687B;font-size:15.5px;line-height:1.8;max-width:480px}
.integrate-list{margin-top:26px;display:flex;flex-direction:column;gap:15px}
.integrate-list li{padding-left:15px;border-left:2px solid #E4EDFF;position:relative}
.integrate-list li::before{content:"";position:absolute;left:-5px;top:7px;width:8px;height:8px;border-radius:50%;background:#fff;border:2px solid var(--blue)}
.integrate-list span{font-size:13.5px;font-weight:650;color:var(--ink);display:block;margin-bottom:2px}
.integrate-list p{font-size:12.5px;line-height:1.65;color:#667085;margin:0}
.code-card{
  background:linear-gradient(160deg,#0A1F44,#06132B);
  border-radius:21px;border:1px solid rgba(120,158,255,.16);
  box-shadow:0 34px 80px rgba(10,31,68,.28);overflow:hidden;
}
.code-card-head{display:flex;align-items:center;gap:10px;padding:14px 17px;border-bottom:1px solid rgba(255,255,255,.08);font-size:12px;color:rgba(255,255,255,.65)}
.code-dots{display:flex;gap:5px}
.code-dots i{width:7px;height:7px;border-radius:50%;background:rgba(255,255,255,.18)}
.code-dots i:nth-child(1){background:#FFB4A8}
.code-dots i:nth-child(2){background:#FFDA9E}
.code-dots i:nth-child(3){background:#A8E6C1}
.code-badge{margin-left:auto;font-size:9px;color:#9FC0FF;border:1px solid rgba(133,170,255,.25);border-radius:999px;padding:2px 8px}
.code-tabs{display:flex;gap:2px;padding:11px 12px 0;border-bottom:1px solid rgba(255,255,255,.08);overflow-x:auto;scrollbar-width:none}
.code-tabs::-webkit-scrollbar{display:none}
.code-tabs button{
  border:0;background:transparent;color:rgba(255,255,255,.48);font-size:11px;font-weight:600;
  padding:8px 12px;border-radius:7px 7px 0 0;cursor:pointer;white-space:nowrap;position:relative;
  border-bottom:2px solid transparent;
}
.code-tabs button:hover{color:rgba(255,255,255,.8)}
.code-tabs button.active{color:#fff;background:rgba(255,255,255,.04);border-bottom-color:#5C8DFF}
.code-pane{padding:22px 22px 8px}
.code-pane pre{margin:0;overflow:auto;background:transparent;color:#C7D8FF;font-family:var(--mono);font-size:12px;line-height:1.8;scrollbar-width:thin}
.code-pane code{font-family:inherit}
.code-note{font-size:10.5px;color:rgba(255,255,255,.58);margin:12px 0 4px}
.code-card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 20px 19px;border-top:1px solid rgba(255,255,255,.06)}
.code-card-foot .text-link{margin-top:0;font-size:12px;color:#9FC0FF}
.copy-btn{
  display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 12px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:8px;
  color:rgba(255,255,255,.78);font-size:11px;font-weight:600;cursor:pointer;
}
.copy-btn:hover{background:rgba(255,255,255,.12);color:#fff}
.copy-btn svg{width:13px;height:13px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.copy-btn.copied{color:#8CE7B6;border-color:rgba(140,231,182,.35);background:rgba(18,183,106,.12)}

/* ---------- Pricing ---------- */
.pricing{background:linear-gradient(180deg,#F8FAFF,#F5F8FF)}
.pricing-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;align-items:stretch}
.price-card{
  background:#fff;border:1px solid var(--line);border-radius:19px;padding:24px 21px;
  display:flex;flex-direction:column;position:relative;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.price-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#CBD9F7}
.price-card.featured{
  border:1.5px solid #7FA6FF;box-shadow:0 24px 60px rgba(27,91,255,.16);
  background:linear-gradient(180deg,#fff,#F8FBFF);
}
.popular{
  position:absolute;right:16px;top:16px;font-size:9px;font-weight:700;letter-spacing:.4px;
  color:#fff;background:linear-gradient(135deg,var(--blue),#3D74FF);
  border-radius:999px;padding:4px 9px;
}
.price-head h3{font-size:17px;color:var(--ink);letter-spacing:-.3px}
.price-head p{font-size:11px;color:#667085;margin-top:3px}
.price{display:flex;align-items:baseline;gap:2px;margin:20px 0 18px;color:var(--ink);font-size:35px;font-weight:760;letter-spacing:-1.5px;font-variant-numeric:tabular-nums}
.price span{font-size:15px;font-weight:600;letter-spacing:0;margin-right:1px}
.price small{font-size:11px;font-weight:500;color:#667085;letter-spacing:0;margin-left:3px}
.price-card ul{display:flex;flex-direction:column;gap:9px;margin-bottom:22px;flex:1}
.price-card li{font-size:12px;color:#475467;padding-left:19px;position:relative;line-height:1.5}
.price-card li::before{
  content:"";position:absolute;left:0;top:5px;width:11px;height:6px;
  border-left:1.8px solid var(--blue);border-bottom:1.8px solid var(--blue);
  transform:rotate(-45deg);border-radius:1px;
}
.pricing-note{text-align:center;color:#667085;font-size:11.5px;margin-top:24px}

/* ---------- FAQ ---------- */
.faq{background:#fff}
.faq-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px;align-items:start}
.faq-copy{position:sticky;top:110px}
.faq-copy h2{margin-bottom:16px}
.faq-copy p{color:#667085;font-size:14px;line-height:1.8;max-width:330px}
.faq-list{border-top:1px solid var(--line)}
.faq-list details{border-bottom:1px solid var(--line)}
.faq-list summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 2px;font-size:14.5px;font-weight:600;color:var(--ink);
}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary span{position:relative;width:17px;height:17px;flex:0 0 auto}
.faq-list summary span::before,.faq-list summary span::after{
  content:"";position:absolute;background:#667085;border-radius:2px;transition:transform .2s ease,background .2s ease;
}
.faq-list summary span::before{left:0;top:7.5px;width:17px;height:1.7px}
.faq-list summary span::after{left:7.5px;top:0;width:1.7px;height:17px}
.faq-list details[open] summary span::after{transform:rotate(90deg);opacity:0}
.faq-list details[open] summary span::before{background:var(--blue)}
.faq-list details p{color:#667085;font-size:13px;line-height:1.8;padding:0 30px 20px 2px;margin:0;max-width:620px}

/* ---------- CTA ---------- */
.cta-section{
  background:linear-gradient(120deg,#0B3BD1 0%,#1B5BFF 46%,#008FD8 100%);
  position:relative;overflow:hidden;color:#fff;
}
.cta-section::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(600px 300px at 88% 10%,rgba(255,255,255,.18),transparent 65%),
    radial-gradient(420px 260px at 8% 100%,rgba(0,194,255,.22),transparent 65%);
  pointer-events:none;
}
.cta-inner{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:60px;align-items:center;padding:78px 0}
.cta-inner h2{color:#fff;font-size:clamp(32px,3.8vw,48px);line-height:1.13;letter-spacing:-1.4px}
.cta-inner p:not(.kicker){color:rgba(255,255,255,.72);font-size:15px;line-height:1.8;margin-top:16px;max-width:470px}
.cta-actions{display:flex;flex-direction:column;gap:11px;align-items:stretch}
.cta-actions small{color:rgba(255,255,255,.58);font-size:10.5px;text-align:center;margin-top:2px}

/* ---------- Footer ---------- */
.site-footer{background:#06132B;color:rgba(255,255,255,.55);padding:60px 0 26px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:50px;padding-bottom:42px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand-name{color:#fff}
.footer-brand .brand-sub{color:rgba(255,255,255,.5)}
.footer-brand p{font-size:12px;line-height:1.8;max-width:340px;color:rgba(255,255,255,.58)}
.footer-col{display:flex;flex-direction:column;gap:10px}
.footer-col b{color:#fff;font-size:12px;font-weight:650;margin-bottom:3px}
.footer-col a{font-size:12px;color:rgba(255,255,255,.62)}
.footer-col a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding-top:20px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  font-size:10.5px;color:rgba(255,255,255,.5);
}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .65s cubic-bezier(.2,.7,.2,1),transform .65s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
.feature-grid .feature-card:nth-child(2),.pricing-grid .price-card:nth-child(2){transition-delay:.05s}
.feature-grid .feature-card:nth-child(3),.pricing-grid .price-card:nth-child(3){transition-delay:.1s}
.feature-grid .feature-card:nth-child(5){transition-delay:.05s}
.feature-grid .feature-card:nth-child(6){transition-delay:.1s}
.step-grid .step-card:nth-child(2){transition-delay:.05s}
.step-grid .step-card:nth-child(3){transition-delay:.1s}
.step-grid .step-card:nth-child(4){transition-delay:.15s}

/* ---------- Responsive ---------- */
@media (max-width:1120px){
  .header-inner{gap:28px}
  .site-nav{gap:22px}
  .hero-inner{gap:38px}
  .app-window{grid-template-columns:118px minmax(0,1fr) 136px}
  .float-a{left:-12px}
  .float-b{right:-14px}
  .workbench-grid{gap:44px}
  .integrate-grid{gap:44px}
  .faq-grid{gap:44px}
}
@media (max-width:980px){
  .header-inner{height:70px}
  .site-nav{
    position:fixed;inset:70px 16px auto;z-index:60;
    background:#fff;border:1px solid var(--line);border-radius:18px;
    padding:18px;box-shadow:0 30px 70px rgba(10,31,68,.18);
    display:none;flex-direction:column;align-items:stretch;gap:2px;
    max-height:calc(100vh - 88px);max-height:calc(100dvh - 88px);overflow-y:auto;overscroll-behavior:contain;
  }
  body.nav-open .site-nav{display:flex;animation:menuIn .2s ease}
  @keyframes menuIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
  .site-nav > a{padding:12px 10px;border-radius:9px;font-size:14px}
  .site-nav > a:hover{background:#F5F8FF}
  .site-nav > a::after{display:none}
  .nav-mobile-actions{display:flex;flex-direction:column;gap:9px;margin-top:12px;padding-top:14px;border-top:1px solid var(--line)}
  .header-link{display:none}
  .header-actions{gap:9px}
  .header-actions .btn-ghost{display:none}
  .nav-toggle{display:flex}
  .hero{padding-top:62px}
  .hero-inner{grid-template-columns:1fr;gap:54px}
  .hero-copy{max-width:680px;text-align:center;margin:0 auto}
  .eyebrow{margin-left:auto;margin-right:auto}
  .hero-lead{margin-left:auto;margin-right:auto}
  .hero-actions{justify-content:center}
  .hero-points{align-items:center}
  .hero-note{justify-content:center}
  .hero-visual{max-width:670px;margin:0 auto;width:100%}
  .hero-connector{inset:-40px -20px}
  .scenario-strip{justify-content:center;margin-top:54px}
  .workbench-grid,.integrate-grid{grid-template-columns:1fr}
  .workbench-copy{max-width:620px}
  .workbench-visual{max-width:600px;width:100%;margin:10px auto 0;min-height:440px}
  .agent-panel{right:0;bottom:-8px}
  .integrate-copy{max-width:620px}
  .code-card{max-width:640px;width:100%;margin:0 auto}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .step-grid{grid-template-columns:repeat(2,1fr)}
  .step-card:nth-child(2) .step-line{display:none}
  .pricing-grid{grid-template-columns:repeat(2,1fr)}
  .faq-grid{grid-template-columns:1fr;gap:30px}
  .faq-copy{position:static}
  .faq-copy p{max-width:600px}
  .cta-inner{grid-template-columns:1fr;gap:30px;padding:64px 0}
  .cta-actions{max-width:360px}
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr;gap:34px}
  .footer-brand{grid-column:1/-1}
}
@media (max-width:720px){
  .container{width:calc(100% - 36px)}
  .section{padding:74px 0}
  .hero{padding:46px 0 48px}
  .hero h1{font-size:clamp(38px,10.6vw,50px);letter-spacing:-1.8px}
  .hero-lead{font-size:15px}
  .hero-actions .btn{width:100%}
  .hero-points{align-items:flex-start;text-align:left;display:inline-flex;max-width:100%}
  .hero-note{font-size:10.5px;text-align:left;justify-content:flex-start}
  .hero-visual{padding:0 3px}
  .app-window{grid-template-columns:104px minmax(0,1fr);height:365px}
  .app-profile{display:none}
  .float-card{display:none}
  .product-window{transform:none;box-shadow:0 26px 70px rgba(10,31,68,.16)}
  .scenario-strip{margin-top:42px;gap:14px}
  .scenario-list{gap:14px 18px}
  .scenario-list span{font-size:12px}
  .feature-grid{grid-template-columns:1fr}
  .pricing-grid{grid-template-columns:1fr}
  .step-grid{grid-template-columns:1fr}
  .step-card{min-height:0}
  .step-num{margin-bottom:26px}
  .step-card .step-line{display:none!important}
  .price-card{padding:22px 19px}
  .mock-panel-head,.queue-row,.agent-row{padding-left:14px;padding-right:14px}
  .queue-agent{display:none}
  .workbench-visual{min-height:400px}
  .agent-panel{position:relative;right:auto;bottom:auto;width:100%;max-width:none;margin:-10px 0 0;transform:rotate(.7deg)}
  .queue-panel{transform:rotate(-.7deg)}
  .code-pane{padding:18px 16px 6px}
  .code-card-foot{padding:14px 16px 17px;flex-wrap:wrap}
  .integrate-list p{font-size:12px}
  .cta-inner h2{font-size:33px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:520px){
  .container{width:calc(100% - 32px)}
  .header-actions > .btn-primary{display:none}
  .brand-name{font-size:17px}
  .brand-sub{display:none}
  .app-window{grid-template-columns:1fr;height:378px}
  .app-side{display:none}
  .chat-head{padding:10px 10px}
  .bubble{font-size:9.5px;max-width:90%}
  .chat-stream{padding:10px 10px 6px}
  .price{font-size:31px}
  .pricing-grid{gap:12px}
  .pricing-grid .price-card{padding:20px 17px}
  .popular{position:static;display:inline-flex;margin-bottom:10px;width:max-content}
  .code-tabs button{padding:8px 9px;font-size:10.5px}
  .hero-note{display:none}
  .section h2{letter-spacing:-1px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
}

/* 英文品牌副标题较长，981–1200px 提前折叠菜单，避免头部横向溢出 */
@media (max-width:1200px){
  .header-inner{height:70px}
  .site-nav{
    position:fixed;inset:70px 16px auto;z-index:60;
    background:#fff;border:1px solid var(--line);border-radius:18px;
    padding:18px;box-shadow:0 30px 70px rgba(10,31,68,.18);
    display:none;flex-direction:column;align-items:stretch;gap:2px;
    max-height:calc(100vh - 88px);max-height:calc(100dvh - 88px);overflow-y:auto;overscroll-behavior:contain;
  }
  body.nav-open .site-nav{display:flex;animation:menuIn .2s ease}
  @keyframes menuIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
  .site-nav > a{padding:12px 10px;border-radius:9px;font-size:14px}
  .site-nav > a:hover{background:#F5F8FF}
  .site-nav > a::after{display:none}
  .nav-mobile-actions{display:flex;flex-direction:column;gap:9px;margin-top:12px;padding-top:14px;border-top:1px solid var(--line)}
  .header-actions{gap:9px}
  .header-actions .btn-ghost{display:none}
  .nav-toggle{display:flex}
}
/* 1201–1600px 英文副标题较长，隐藏以收进 1180px 容器；中文保持原样 */
@media (min-width:1201px) and (max-width:1600px){
  html:not(:lang(zh)) .brand-sub{display:none}
}
/* 超小屏（≤380px）收窄头部间距，避免语言选择器 + 菜单按钮挤出屏幕 */
@media (max-width:380px){
  .header-inner{gap:12px}
  .header-actions{gap:6px}
  .locale-select{max-width:96px}
}