/* ==========================================================================
   无人机维修一键通 · 首页样式（整站视觉系统）
   --------------------------------------------------------------------------
   设计语言：柔和浅底 + 靛蓝/紫渐变、超大标题、玻璃导航、大圆角卡片、
   柔和双层阴影、渐变描边、滚动淡入。字体全部使用系统高质量字族，
   中文优先 PingFang SC / HarmonyOS Sans / 微软雅黑。
   ========================================================================== */

/* ---------- 设计令牌 ---------- */
:root{
  --bg:#f5f7fb;
  --bg-soft:#eef2fa;
  --surface:#ffffff;
  --surface-2:#f4f6fc;
  --ink:#0f1320;
  --ink-2:#4d5568;
  --ink-3:#8b94a8;
  --line:#e4e9f3;

  --brand:#4f46e5;
  --brand-2:#7c5cff;
  --brand-soft:rgba(79,70,229,.09);
  --teal:#0ea5a5;
  --amber:#f59e0b;
  --green:#10b981;

  --radius:20px;
  --radius-sm:14px;
  --shadow-sm:0 1px 2px rgba(16,19,26,.05), 0 4px 14px rgba(16,19,26,.05);
  --shadow-md:0 10px 30px rgba(16,19,26,.08), 0 2px 8px rgba(16,19,26,.04);
  --shadow-lg:0 26px 64px rgba(16,19,26,.12), 0 8px 24px rgba(16,19,26,.06);
  --ring:0 0 0 4px rgba(79,70,229,.13);

  --maxw:1240px;
  --nav-h:70px;

  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Sarasa Mono SC",monospace;

  /* 兼容别名：main.js 里内联样式引用了这几个变量名 */
  --sub:#4d5568;
  --accent:#f59e0b;
  --brand2:#7c5cff;
  --ink2:#4d5568;
}

/* ---------- 基础 ---------- */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 20px);-webkit-text-size-adjust:100%}
body{
  font-family:var(--font);
  font-size:16px;line-height:1.75;color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
  font-feature-settings:"kern" 1;
}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
::selection{background:rgba(79,70,229,.16)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:#d7deec;border-radius:99px;border:2px solid var(--bg)}
::-webkit-scrollbar-thumb:hover{background:#c2cbdd}

.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* 背景光晕 */
.aurora{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none}
.aurora b{position:absolute;border-radius:50%;filter:blur(90px);opacity:.55}
.aurora b:nth-child(1){width:560px;height:560px;left:-180px;top:-200px;background:radial-gradient(circle,#a5b4fc,transparent 65%)}
.aurora b:nth-child(2){width:520px;height:520px;right:-160px;top:40px;background:radial-gradient(circle,#c4b5fd,transparent 65%)}
.aurora b:nth-child(3){width:460px;height:460px;left:42%;top:58%;background:radial-gradient(circle,#99f6e4,transparent 68%);opacity:.34}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 24px;border-radius:13px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;
}
.btn svg{width:17px;height:17px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;
  box-shadow:0 10px 24px rgba(79,70,229,.30),0 2px 6px rgba(79,70,229,.18);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(79,70,229,.36)}
.btn-ghost{
  background:var(--surface);color:var(--ink);border-color:var(--line);box-shadow:var(--shadow-sm);
}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(79,70,229,.45);color:var(--brand);box-shadow:var(--shadow-md)}
.btn-white{background:#fff;color:var(--brand);box-shadow:0 12px 28px rgba(10,14,26,.22)}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(10,14,26,.28)}
.btn-ghost-dark{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.5)}
.btn-ghost-dark:hover{background:rgba(255,255,255,.24);border-color:rgba(255,255,255,.85);transform:translateY(-2px)}

/* ---------- 导航 ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;height:var(--nav-h);z-index:100;
  display:flex;align-items:center;
  background:rgba(248,250,254,.76);
  backdrop-filter:saturate(180%) blur(18px);
  -webkit-backdrop-filter:saturate(180%) blur(18px);
  border-bottom:1px solid transparent;
  transition:border-color .3s,box-shadow .3s,background .3s;
}
.nav.scrolled{border-bottom-color:var(--line);box-shadow:0 6px 24px rgba(16,19,26,.05);background:rgba(250,251,254,.9)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%}
.logo{display:flex;align-items:center;gap:11px;font-weight:800;font-size:17px;letter-spacing:-.03em;white-space:nowrap}
.logo .mark{
  width:36px;height:36px;border-radius:11px;flex:none;
  display:grid;place-items:center;color:#fff;font-size:15px;font-weight:800;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 6px 16px rgba(79,70,229,.34);
}
.logo-text em{font-style:normal;color:var(--ink-3);font-weight:500;font-size:14px;margin-left:1px}
.nav-links{display:flex;align-items:center;gap:2px;font-size:14.5px;font-weight:500;color:var(--ink-2)}
.nav-links a{padding:8px 13px;border-radius:10px;transition:color .2s,background .2s}
.nav-links a:hover{color:var(--brand);background:var(--brand-soft)}
.nav-links a.active{color:var(--brand);background:var(--brand-soft)}
.nav-right{display:flex;align-items:center;gap:10px}
.nav-right .btn{padding:10px 18px;font-size:14px;border-radius:11px}

.nav-toggle{display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:11px;background:#fff;place-items:center;flex:0 0 auto;box-shadow:var(--shadow-sm)}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative;transition:.2s}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.2s}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle.open span{background:transparent}
.nav-toggle.open span::before{top:0;transform:rotate(45deg)}
.nav-toggle.open span::after{top:0;transform:rotate(-45deg)}

/* 账号菜单 */
.user-menu{position:relative}
.user-chip{display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm);
  padding:6px 12px;border-radius:99px;font-size:14px;font-weight:600;cursor:pointer;max-width:52vw}
.user-chip .name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.user-chip svg{flex:0 0 auto;opacity:.6}
.user-drop{position:absolute;right:0;top:calc(100% + 12px);min-width:190px;background:#fff;border:1px solid var(--line);
  border-radius:16px;box-shadow:var(--shadow-lg);padding:7px;display:none;z-index:120}
.user-drop.show{display:block;animation:dropIn .18s ease}
@keyframes dropIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}
.user-drop a,.user-drop button{display:flex;align-items:center;gap:9px;width:100%;padding:10px 12px;border:0;background:none;
  font-size:14px;color:var(--ink);border-radius:10px;cursor:pointer;text-align:left;font-family:inherit;font-weight:500}
.user-drop a:hover,.user-drop button:hover{background:var(--surface-2);color:var(--brand)}
.user-drop .sep{height:1px;background:var(--line);margin:5px 8px}
.user-drop .role-line{padding:9px 12px 7px;font-size:12px;color:var(--ink-3);word-break:break-all}
.role-tag{font-size:11px;padding:2px 9px;border-radius:99px;color:#fff;font-weight:700;white-space:nowrap}
.role-free{background:#94a3b8}.role-vip{background:var(--amber)}.role-agent{background:#6366f1}
.role-tech{background:var(--teal)}.role-admin{background:var(--green)}

/* ---------- 顶部横幅区（免费试用 / 后台公告，两条可叠放） ---------- */
.top-stack{position:fixed;top:var(--nav-h);left:0;right:0;z-index:99}
.top-notice{
  background:linear-gradient(120deg,var(--brand),var(--brand-2) 70%,var(--teal));
  color:#fff;box-shadow:0 8px 24px rgba(79,70,229,.18);
}
.promo-strip{
  background:linear-gradient(120deg,#4338ca,#6d28d9 55%,#0ea5a5);
  color:#fff;box-shadow:0 10px 26px rgba(79,70,229,.26);
}
.promo-strip[hidden],.top-notice[hidden]{display:none}
.ps-inner{
  max-width:var(--maxw);margin:0 auto;padding:9px 24px;
  display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap;
  font-size:13px;
}
.ps-tag{
  flex:0 0 auto;font-size:11px;font-weight:800;letter-spacing:.06em;
  padding:3px 10px;border-radius:99px;background:rgba(255,255,255,.22);
}
.ps-text b{font-weight:800}
.ps-days{font-variant-numeric:tabular-nums;opacity:.9}
.ps-btn{
  flex:0 0 auto;padding:6px 14px;border-radius:99px;font-size:12.5px;font-weight:700;
  background:#fff;color:var(--brand);border:0;cursor:pointer;transition:.2s;
}
.ps-btn:hover{transform:translateY(-1px);box-shadow:0 6px 14px rgba(0,0,0,.16)}
.tn-inner{max-width:var(--maxw);margin:0 auto;padding:11px 24px;display:flex;align-items:center;gap:12px;font-size:13.5px}
.tn-tag{flex:0 0 auto;font-size:11px;font-weight:700;letter-spacing:.06em;background:rgba(255,255,255,.22);padding:3px 10px;border-radius:99px}
.tn-text{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tn-text b{font-weight:700;margin-right:5px}
.tn-more{flex:0 0 auto;font-size:13px;text-decoration:underline;opacity:.95}
.tn-more:hover{opacity:1}
.tn-close{flex:0 0 auto;background:transparent;border:0;color:#fff;font-size:19px;line-height:1;cursor:pointer;opacity:.8;padding:0 2px}
.tn-close:hover{opacity:1}

/* ---------- 首屏 ---------- */
.hero{position:relative;padding:calc(var(--nav-h) + 72px) 0 72px;overflow:hidden}
/* 有置顶公告时，首屏顶部让出公告条的高度 */
/* 有顶部横幅时，首屏让出对应高度 */
body:has(.top-stack .promo-strip:not([hidden])) .hero{padding-top:calc(var(--nav-h) + 118px)}
body:has(.top-stack .top-notice:not([hidden])) .hero{padding-top:calc(var(--nav-h) + 118px)}
body:has(.top-stack .promo-strip:not([hidden])):has(.top-stack .top-notice:not([hidden])) .hero{padding-top:calc(var(--nav-h) + 168px)}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background-image:radial-gradient(rgba(79,70,229,.10) 1px,transparent 1px);
  background-size:26px 26px;
  -webkit-mask-image:radial-gradient(ellipse 70% 60% at 50% 30%,#000 20%,transparent 75%);
  mask-image:radial-gradient(ellipse 70% 60% at 50% 30%,#000 20%,transparent 75%);
  opacity:.55;
}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:64px;align-items:center}

.badge{
  display:inline-flex;align-items:center;gap:9px;
  padding:7px 16px 7px 12px;border-radius:99px;font-size:13px;font-weight:500;
  background:var(--surface);border:1px solid var(--line);color:var(--ink-2);
  box-shadow:var(--shadow-sm);margin-bottom:26px;
}
.pulse{width:7px;height:7px;border-radius:50%;background:var(--green);position:relative;flex:none}
.pulse::after{content:"";position:absolute;inset:-4px;border-radius:50%;background:var(--green);opacity:.4;animation:pulse 2.2s infinite}
@keyframes pulse{0%{transform:scale(.7);opacity:.5}70%{transform:scale(1.9);opacity:0}100%{opacity:0}}

.hero-title{
  font-size:clamp(2.5rem,4.6vw,3.7rem);line-height:1.08;letter-spacing:-.042em;
  font-weight:800;margin-bottom:22px;
}
.hero-title .grad{
  /* 渐变收在深靛蓝→深紫区间，避免末尾发浅影响可读性 */
  background:linear-gradient(105deg,#4338ca 0%,#6d28d9 55%,#7c5cff 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  /* 防止渐变文字在部分浏览器被裁切 */
  padding-bottom:.06em;
}
.hero-sub{font-size:clamp(1rem,1.35vw,1.09rem);line-height:1.8;color:var(--ink-2);max-width:46ch;margin-bottom:14px}
.hero-sub strong{color:var(--ink);font-weight:600}

/* 打字机一行：让首屏有"在运行"的感觉 */
.typed{display:flex;align-items:center;gap:8px;min-height:22px;margin-bottom:30px;
  font-family:var(--mono);font-size:13px;color:var(--ink-3)}
.tw-cmd{color:var(--brand);font-weight:600;flex:0 0 auto}
.tw-text{white-space:nowrap;overflow:hidden}
.tw-caret{display:inline-block;width:2px;height:14px;background:var(--brand);animation:twBlink 1s step-end infinite}
@keyframes twBlink{50%{opacity:0}}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:46px}
.btn-row .btn{padding:14px 26px}

.hero-meta{display:flex;gap:38px;flex-wrap:wrap}
.hero-meta > div{display:flex;flex-direction:column;gap:2px}
.hero-meta .k{font-size:1.5rem;font-weight:800;letter-spacing:-.03em;line-height:1.25;font-variant-numeric:tabular-nums}
.hero-meta .k span{color:var(--brand);font-size:.9em}
.hero-meta .v{font-size:12.5px;color:var(--ink-3)}

/* 产品卡 */
.hero-visual{position:relative;display:flex;justify-content:center}
.device-card{position:relative;width:100%;max-width:400px}
.device-frame{
  position:relative;padding:3px;border-radius:30px;
  background:linear-gradient(155deg,var(--brand),var(--brand-2) 52%,var(--teal));
  box-shadow:var(--shadow-lg);
  animation:floaty 8s ease-in-out infinite;
}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
.device-inner{
  position:relative;border-radius:27px;overflow:hidden;aspect-ratio:1/1.02;
  background:
    radial-gradient(circle at 30% 18%,rgba(79,70,229,.35),transparent 60%),
    linear-gradient(160deg,#1b2033,#0e1220 70%);
}
.device-photo{width:100%;height:100%;object-fit:cover;opacity:.92}
.device-scrim{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,14,26,.12) 0%,rgba(10,14,26,.06) 42%,rgba(10,14,26,.82) 100%);
}
.device-hud{position:absolute;left:22px;right:22px;bottom:22px;color:#fff}
.hud-live{display:inline-flex;align-items:center;gap:7px;font-size:11.5px;font-weight:600;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.24);padding:4px 11px;border-radius:99px;
  backdrop-filter:blur(8px);margin-bottom:10px}
.hud-live i{width:6px;height:6px;border-radius:50%;background:#34d399;box-shadow:0 0 0 3px rgba(52,211,153,.25)}
.hud-model{font-size:1.65rem;font-weight:800;letter-spacing:-.03em;line-height:1.15}
.hud-meta{display:flex;gap:12px;flex-wrap:wrap;font-size:11.5px;color:rgba(255,255,255,.72);font-family:var(--mono);margin-top:6px}
.device-tag{
  position:absolute;bottom:-18px;left:50%;transform:translateX(-50%);
  background:#fff;border:1px solid var(--line);border-radius:99px;padding:9px 18px;
  font-size:12.5px;font-weight:600;white-space:nowrap;box-shadow:var(--shadow-md);
  display:flex;align-items:center;gap:7px;z-index:2;
}
.device-tag .pin{font-size:13px}
.float-chip{
  position:absolute;background:#fff;border:1px solid var(--line);border-radius:13px;
  padding:9px 14px;font-size:12.5px;font-weight:600;box-shadow:var(--shadow-md);
  display:flex;align-items:center;gap:7px;white-space:nowrap;z-index:2;
}
.float-chip i{font-style:normal;font-size:14px}
.chip-1{top:12%;left:-9%;animation:floaty2 6.5s ease-in-out infinite}
.chip-2{bottom:26%;right:-10%;animation:floaty2 6.5s ease-in-out infinite .9s}
@keyframes floaty2{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* 机型条 */
/* 机型条（自动横向滚动） */
.model-strip{
  display:flex;align-items:center;gap:14px;overflow:hidden;
  margin-top:64px;padding:14px 20px;border-radius:18px;
  background:rgba(255,255,255,.72);border:1px solid var(--line);
  backdrop-filter:blur(10px);box-shadow:var(--shadow-sm);
}
.strip-label{flex:0 0 auto;font-size:11.5px;font-weight:700;letter-spacing:.12em;color:var(--ink-3);text-transform:uppercase}
.mq{
  flex:1;min-width:0;overflow:hidden;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 5%,#000 95%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 5%,#000 95%,transparent);
}
.mq-track{display:flex;width:max-content;animation:mqMove 34s linear infinite}
.model-strip:hover .mq-track{animation-play-state:paused}
.mq-half{display:flex;gap:9px;padding-right:9px}
@keyframes mqMove{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.model-strip .chip{
  flex:0 0 auto;font-size:12.5px;font-weight:600;padding:6px 13px;border-radius:99px;
  background:#fff;border:1px solid var(--line);color:var(--ink-2);transition:.2s;
}
.model-strip .chip:hover{color:var(--brand);border-color:rgba(79,70,229,.4);background:var(--brand-soft)}

/* ---------- 区块 ---------- */
.section{padding:92px 0;position:relative}
.section-soft{background:linear-gradient(180deg,rgba(238,242,250,0) 0%,rgba(238,242,250,.9) 18%,rgba(238,242,250,.9) 82%,rgba(238,242,250,0) 100%)}
.sec-head{max-width:700px;margin-bottom:56px}
.sec-tag{
  display:inline-flex;align-items:center;gap:9px;font-size:12px;font-weight:700;
  letter-spacing:.16em;text-transform:uppercase;color:var(--brand);margin-bottom:16px;
}
.sec-tag::before{content:"";width:26px;height:2px;border-radius:2px;background:var(--brand)}
.sec-title{font-size:clamp(1.85rem,3.2vw,2.55rem);font-weight:800;letter-spacing:-.035em;line-height:1.2;margin-bottom:14px}
.sec-desc{color:var(--ink-2);font-size:16px}
.hint-inline{color:var(--amber);font-weight:600;margin-left:6px}

/* ---------- 功能卡片 ---------- */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feat{
  position:relative;overflow:hidden;display:flex;flex-direction:column;
  padding:26px 24px 24px;border-radius:var(--radius);
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-sm);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.feat::after{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2),var(--teal));
  transform:scaleX(0);transform-origin:left;transition:transform .4s cubic-bezier(.22,1,.36,1);
}
.feat:hover,.feat-link:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:transparent}
.feat:hover::after{transform:scaleX(1)}
.feat-ic{
  width:46px;height:46px;border-radius:13px;display:grid;place-items:center;font-size:21px;
  background:linear-gradient(135deg,rgba(79,70,229,.11),rgba(124,92,255,.11));
  box-shadow:inset 0 0 0 1px rgba(79,70,229,.07);
  margin-bottom:18px;
}
.feat h3{font-size:16.5px;font-weight:700;letter-spacing:-.015em;margin-bottom:7px}
.feat p{font-size:13.8px;line-height:1.72;color:var(--ink-2);flex:1}
.feat .tag{
  align-self:flex-start;margin-top:16px;font-size:11.5px;font-weight:700;
  padding:4px 11px;border-radius:99px;background:var(--brand-soft);color:var(--brand);
}
.feat-link{cursor:pointer;display:flex;flex-direction:column}

/* ---------- 下载卡片 ---------- */
.dl-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.dl{
  display:flex;align-items:center;gap:16px;
  padding:22px;border-radius:18px;background:var(--surface);
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.dl:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:rgba(79,70,229,.32)}
.dl .ic{
  width:52px;height:52px;border-radius:15px;flex:0 0 auto;display:grid;place-items:center;
  color:var(--brand);
  background:linear-gradient(135deg,rgba(79,70,229,.11),rgba(124,92,255,.13));
  box-shadow:inset 0 0 0 1px rgba(79,70,229,.07);
}
.dl .meta{flex:1;min-width:0}
.dl .meta h4{font-size:15.5px;font-weight:700;letter-spacing:-.012em}
.dl .meta p{font-size:12.5px;color:var(--ink-3);margin:4px 0 9px;font-variant-numeric:tabular-nums}
.dl .meta .pill{
  display:inline-block;font-size:11px;font-weight:700;padding:3px 10px;border-radius:99px;
  background:var(--brand-soft);color:var(--brand);
}
.dl .btn{padding:10px 20px;font-size:13.5px;border-radius:11px;flex:0 0 auto}
.dl.locked{background:linear-gradient(180deg,#fff,#fdfaf5);border-color:#f3e6d2}
.dl.locked .ic{color:#b45309;background:linear-gradient(135deg,#fff3e0,#ffe7c7);box-shadow:inset 0 0 0 1px rgba(245,158,11,.14)}
.dl.locked .meta h4{color:#3a4152}
.dl.locked .meta .pill{background:#fff1dd;color:#a9550b}
.dl.locked .btn{border-color:#f0dfc4;color:#b45309}
.dl.locked .btn:hover{background:#fff8ed;border-color:#e3c79b;color:#92400e}

/* ---------- 资料卡片 ---------- */
.teaser-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.teaser{
  position:relative;overflow:hidden;display:flex;flex-direction:column;
  padding:28px 26px;border-radius:var(--radius);background:var(--surface);
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.teaser::before{
  content:"";position:absolute;right:-52px;top:-52px;width:160px;height:160px;border-radius:50%;
  background:radial-gradient(circle,rgba(99,102,241,.10),transparent 70%);pointer-events:none;
}
.teaser:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:rgba(79,70,229,.28)}
.teaser .ic,.teaser-ic{
  width:50px;height:50px;border-radius:14px;display:grid;place-items:center;font-size:21px;
  background:linear-gradient(135deg,rgba(79,70,229,.11),rgba(124,92,255,.11));
  box-shadow:inset 0 0 0 1px rgba(79,70,229,.07);
  margin-bottom:16px;
}
.teaser h3{font-size:17.5px;font-weight:700;letter-spacing:-.02em;margin-bottom:8px}
.teaser p{font-size:13.6px;line-height:1.72;color:var(--ink-2);flex:1;margin-bottom:16px}
.teaser a.more{font-size:13.5px;font-weight:700;color:var(--brand);transition:gap .2s,letter-spacing .2s}
.teaser a.more:hover{letter-spacing:.02em}
.teaser.locked{background:linear-gradient(180deg,#fff,#fdfaf5);border-color:#f3e6d2}
.teaser.locked .ic{background:linear-gradient(135deg,#fff3e0,#ffe7c7);box-shadow:inset 0 0 0 1px rgba(245,158,11,.14)}
.teaser .pill{
  align-self:flex-start;font-size:11px;font-weight:700;padding:4px 11px;border-radius:99px;
  background:#fff1dd;color:#a9550b;
}

/* ---------- 故障地图 ---------- */
.map-block{margin-top:22px}
.map-wrap{
  display:grid;grid-template-columns:1.35fr .65fr;gap:22px;
  padding:22px;border-radius:var(--radius);background:var(--surface);
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
}
.map-svg{height:400px;border-radius:16px;background:linear-gradient(160deg,#f5f8fe,#e9eefa);
  box-shadow:inset 0 0 0 1px rgba(16,19,26,.05);overflow:hidden}
.map-list{max-height:400px;overflow:auto;padding-right:2px}
.case{display:flex;gap:10px;padding:12px 6px;border-bottom:1px solid var(--line);transition:background .2s}
.case:last-child{border-bottom:0}
.case:hover{background:var(--surface-2);border-radius:10px}
.case .dot{width:9px;height:9px;border-radius:50%;flex:0 0 auto;margin-top:7px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2))}
.case b{display:block;font-size:13.5px;font-weight:700;letter-spacing:-.01em}
.case span{color:var(--ink-3);font-size:12.5px}
.map-note{text-align:center;color:var(--ink-3);font-size:12.5px;margin-top:14px}

/* ---------- 更新日志 ---------- */
.log-wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:start}
.timeline{position:relative;padding-left:32px}
.timeline::before{
  content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2) 70%,transparent);
}
.timeline:has(> p:only-child)::before{display:none}
.timeline:has(> p:only-child){padding-left:0}
.tl-item{position:relative;padding-bottom:34px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-28px;top:6px;width:12px;height:12px;border-radius:50%;
  background:#fff;border:2.5px solid var(--brand);
  box-shadow:0 0 0 4px rgba(79,70,229,.12);transition:.3s;
}
.tl-item:hover::before{background:var(--brand);box-shadow:0 0 0 6px rgba(79,70,229,.15)}
.tl-item h4{font-size:16px;font-weight:700;letter-spacing:-.015em;display:flex;align-items:center;gap:9px;flex-wrap:wrap}
.tl-item .ver{
  font-size:11.5px;font-weight:700;padding:3px 10px;border-radius:99px;
  background:var(--brand-soft);color:var(--brand);
}
.tl-item ul{list-style:none;margin-top:10px;color:var(--ink-2);font-size:14px}
.tl-item li{position:relative;padding-left:16px;margin-bottom:5px;line-height:1.7}
.tl-item li::before{content:"";position:absolute;left:0;top:.72em;width:5px;height:5px;border-radius:50%;background:var(--brand);opacity:.5}

.news{display:flex;flex-direction:column;gap:12px}
.news .case{padding:16px 18px;border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--shadow-sm)}
.news .case:hover{border-color:rgba(79,70,229,.3)}
.news .case .dot{background:linear-gradient(135deg,var(--brand-2),var(--teal))}

/* 列表为空时的处理：隐藏空列，只留一栏或整块空状态 */
.timeline[hidden],.news[hidden]{display:none}
.log-wrap.is-single{grid-template-columns:1fr}
.log-wrap.is-single .timeline,.log-wrap.is-single .news{max-width:780px}
.log-wrap.is-empty{grid-template-columns:1fr}

.log-empty{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;text-align:center;
  padding:56px 28px;border:1px dashed #d9e0ef;border-radius:20px;
  background:linear-gradient(180deg,#fff,#fafbff);
}
.log-empty .le-ic{
  width:54px;height:54px;border-radius:15px;display:grid;place-items:center;margin-bottom:18px;
  color:var(--brand);background:linear-gradient(135deg,rgba(79,70,229,.10),rgba(124,92,255,.12));
  box-shadow:inset 0 0 0 1px rgba(79,70,229,.08);
}
.log-empty .le-ic svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.log-empty h3{font-size:17px;font-weight:700;letter-spacing:-.02em;margin-bottom:7px}
.log-empty p{font-size:13.5px;line-height:1.7;color:var(--ink-3);max-width:34ch}
.log-empty .le-link{margin-top:16px;font-size:13px;font-weight:600;color:var(--brand)}
.log-empty .le-link:hover{text-decoration:underline}

/* ---------- 注册引导 ---------- */
.cta-band{
  position:relative;overflow:hidden;display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:54px 56px;border-radius:28px;color:#fff;
  background:linear-gradient(120deg,#3b34d6,var(--brand) 42%,var(--brand-2) 100%);
  box-shadow:0 30px 70px rgba(79,70,229,.30);
}
.cta-glow{
  position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.30),transparent 68%);pointer-events:none;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.35) 1px,transparent 1px);
  background-size:18px 18px;opacity:.18;
  -webkit-mask-image:linear-gradient(90deg,transparent 40%,#000 100%);
  mask-image:linear-gradient(90deg,transparent 40%,#000 100%);
}
.cta-copy{position:relative;z-index:1;max-width:580px}
.cta-copy h2{font-size:clamp(1.6rem,2.6vw,2.15rem);font-weight:800;letter-spacing:-.03em;line-height:1.25;margin-bottom:12px}
.cta-copy p{font-size:15px;color:rgba(255,255,255,.86)}
.cta-actions{position:relative;z-index:1;display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
footer{background:#fff;padding:64px 0 28px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.foot-brand .logo{margin-bottom:16px}
.foot-brand p{font-size:13.5px;color:var(--ink-3);max-width:280px;line-height:1.75}
.foot-col h5{font-size:13px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--ink);margin-bottom:16px}
.foot-col a{display:block;font-size:14px;color:var(--ink-2);padding:6px 0;transition:color .2s,transform .2s}
.foot-col a:hover{color:var(--brand);transform:translateX(3px)}
.foot-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;border-top:1px solid var(--line);margin-top:44px;padding-top:22px;color:var(--ink-3);font-size:12.5px}

/* ---------- 弹窗 ---------- */
.modal-mask{
  position:fixed;inset:0;z-index:300;display:none;align-items:center;justify-content:center;padding:20px;
  background:rgba(10,14,26,.46);backdrop-filter:blur(6px);
}
.modal-mask.show{display:flex}
.modal{
  position:relative;width:400px;max-width:100%;background:#fff;border-radius:24px;
  padding:34px 32px 30px;box-shadow:0 40px 90px rgba(10,14,26,.34);
  animation:modalIn .24s cubic-bezier(.22,1,.36,1);
}
@keyframes modalIn{from{opacity:0;transform:translateY(14px) scale(.985)}to{opacity:1;transform:none}}
.modal .close{position:absolute;right:16px;top:14px;width:34px;height:34px;border-radius:10px;
  display:grid;place-items:center;font-size:20px;line-height:1;color:var(--ink-3);transition:.2s}
.modal .close:hover{background:var(--surface-2);color:var(--ink)}
.modal h3{font-size:21px;font-weight:800;letter-spacing:-.025em;margin-bottom:6px}
.modal .sub{font-size:13.5px;color:var(--ink-3);margin-bottom:22px}
.tabs{display:flex;gap:4px;background:var(--surface-2);padding:4px;border-radius:13px;margin-bottom:20px}
.tabs button{flex:1;padding:9px;border-radius:10px;font-size:14px;font-weight:600;color:var(--ink-2);transition:.2s}
.tabs button.active{background:#fff;color:var(--brand);box-shadow:var(--shadow-sm)}
.field{margin-bottom:14px}
.field label{display:block;font-size:12.5px;font-weight:600;color:var(--ink-2);margin-bottom:6px}
.field input{
  width:100%;padding:12px 14px;font-size:14.5px;border-radius:12px;outline:none;
  background:var(--surface-2);border:1px solid var(--line);color:var(--ink);
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.field input::placeholder{color:#a8b0c2}
.field input:focus{border-color:var(--brand);background:#fff;box-shadow:var(--ring)}
/* 图形验证码 */
.captcha-row{display:flex;gap:10px;align-items:stretch}
.captcha-row input{
  width:auto;flex:1;min-width:0;text-transform:uppercase;letter-spacing:.16em;
  font-family:var(--mono);font-size:15px;
}
.captcha-img{
  flex:0 0 auto;padding:0;overflow:hidden;cursor:pointer;
  border:1px solid var(--line);border-radius:12px;background:var(--surface-2);transition:.2s;
}
.captcha-img:hover{border-color:rgba(79,70,229,.45)}
.captcha-img img{display:block;width:116px;height:40px;object-fit:cover}
.modal .btn{width:100%;margin-top:6px}
.modal .err{color:#e11d48;font-size:13px;margin-top:10px;min-height:18px;text-align:center}
.modal .hint{font-size:12.5px;color:var(--ink-3);margin-top:14px;text-align:center}

/* ---------- Toast ---------- */
.toast{
  position:fixed;left:50%;bottom:36px;z-index:400;
  transform:translateX(-50%) translateY(16px);
  background:rgba(15,19,32,.95);color:#fff;font-size:13.5px;font-weight:500;
  padding:12px 22px;border-radius:13px;box-shadow:0 18px 44px rgba(10,14,26,.3);
  backdrop-filter:blur(10px);opacity:0;pointer-events:none;transition:.3s;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------- 滚动淡入 ---------- */
.reveal{
  opacity:0;transform:translateY(24px);
  transition:opacity .75s cubic-bezier(.22,1,.36,1),transform .75s cubic-bezier(.22,1,.36,1);
}
.reveal.in{opacity:1;transform:none}
.d1{transition-delay:.08s}.d2{transition-delay:.16s}.d3{transition-delay:.24s}.d4{transition-delay:.32s}

/* ---------- 响应式 ---------- */
@media(max-width:1080px){
  .hero-grid{gap:44px}
  .nav-links{gap:0;font-size:14px}
  .nav-links a{padding:8px 10px}
  .device-card{max-width:356px}
  .chip-1{left:-3%}
  .chip-2{right:-4%}
}

/* 900 以下才切成单栏（原来是 980，中小窗口会过早变成"手机样"） */
@media(max-width:900px){
  .hero{padding-top:calc(var(--nav-h) + 48px)}
  body:has(.top-stack .promo-strip:not([hidden])) .hero,
  body:has(.top-stack .top-notice:not([hidden])) .hero{padding-top:calc(var(--nav-h) + 96px)}
  body:has(.top-stack .promo-strip:not([hidden])):has(.top-stack .top-notice:not([hidden])) .hero{padding-top:calc(var(--nav-h) + 140px)}
  .hero-grid{grid-template-columns:1fr;gap:56px}
  .hero-copy{text-align:center;display:flex;flex-direction:column;align-items:center}
  .hero-sub{max-width:52ch}
  .btn-row{justify-content:center}
  .hero-meta{justify-content:center;gap:32px}
  .hero-visual{margin-top:8px}
  .device-card{max-width:340px}
  .chip-1{left:-4%}
  .chip-2{right:-5%}

  .nav-links{
    display:none;position:absolute;top:var(--nav-h);left:0;right:0;z-index:95;
    flex-direction:column;align-items:stretch;gap:0;padding:8px 20px 16px;
    background:rgba(250,251,254,.98);backdrop-filter:blur(18px);
    border-bottom:1px solid var(--line);box-shadow:0 18px 36px rgba(20,40,90,.10);
    max-height:calc(100vh - var(--nav-h));overflow-y:auto;
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:13px 6px;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink);border-radius:8px}
  .nav-links a:last-child{border-bottom:0}
  .nav-toggle{display:grid}

  .feat-grid,.teaser-grid{grid-template-columns:1fr 1fr}
  .dl-grid{grid-template-columns:1fr}
  .map-wrap{grid-template-columns:1fr}
  .map-svg{height:320px}
  .map-list{max-height:none}
  .log-wrap{grid-template-columns:1fr;gap:36px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 32px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .foot-brand{grid-column:1/-1}
}

@media(max-width:640px){
  :root{--nav-h:62px}
  .container{padding:0 18px}
  .section{padding:72px 0}
  .sec-head{margin-bottom:36px}
  .hero{padding-top:calc(var(--nav-h) + 36px);padding-bottom:56px}
  body:has(.top-stack .promo-strip:not([hidden])) .hero,
  body:has(.top-stack .top-notice:not([hidden])) .hero{padding-top:calc(var(--nav-h) + 84px)}
  body:has(.top-stack .promo-strip:not([hidden])):has(.top-stack .top-notice:not([hidden])) .hero{padding-top:calc(var(--nav-h) + 124px)}
  .ps-inner{padding:8px 16px;gap:8px;font-size:12px;justify-content:flex-start}
  .ps-days{display:none}
  .hero-title{font-size:clamp(2.05rem,9vw,2.6rem);letter-spacing:-.035em}
  .hero-sub{font-size:15px}
  .badge{font-size:11.5px;padding:6px 13px 6px 10px}
  .btn-row .btn{flex:1;max-width:210px;padding:13px 18px;font-size:14px}
  .hero-meta{gap:26px}
  .hero-meta .k{font-size:1.25rem}
  .device-card{max-width:300px}
  .float-chip{font-size:11.5px;padding:8px 11px}
  .chip-1{left:-2%}
  .chip-2{right:-3%}
  .model-strip{margin-top:44px;padding:14px;justify-content:center}

  .feat-grid,.teaser-grid{grid-template-columns:1fr}
  .feat,.teaser{padding:22px}
  .dl{padding:18px;flex-wrap:wrap}
  .dl .meta{min-width:58%}
  .dl .btn{width:100%}
  .map-wrap{padding:16px}
  .map-svg{height:260px}
  .cta-band{padding:32px 24px;border-radius:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1;justify-content:center}
  .foot-grid{grid-template-columns:1fr;gap:24px}
  .foot-bottom{justify-content:center;text-align:center}
  .modal{padding:28px 22px;border-radius:20px}
  .toast{left:16px;right:16px;transform:translateY(16px);text-align:center}
  .toast.show{transform:translateY(0)}
  .timeline{padding-left:26px}
  .tl-item::before{left:-23px}
}

/* ---------- 隔段白底 ---------- */
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ---------- 矢量图标（功能卡 / 资料卡） ---------- */
.feat-ic svg,.teaser-ic svg,.teaser .ic svg{
  width:22px;height:22px;fill:none;stroke:var(--brand);
  stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;
}
.teaser.locked .ic svg,.teaser.locked .teaser-ic svg{stroke:#b45309}

/* ---------- 工作台预览 ---------- */
.wb-head{display:grid;grid-template-columns:1fr auto;gap:56px;align-items:end;margin-bottom:44px}
.wb-head-l{max-width:560px}
.wb-points{list-style:none;display:flex;flex-direction:column;gap:11px;font-size:13.5px;color:var(--ink-2);padding-bottom:4px}
.wb-points li{position:relative;padding-left:20px;line-height:1.6}
.wb-points li::before{
  content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;border-radius:2px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
}

.wb{
  border-radius:22px;overflow:hidden;background:#fff;
  border:1px solid var(--line);box-shadow:var(--shadow-lg);
}
.wb-bar{
  display:flex;align-items:center;gap:14px;padding:13px 18px;
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,#fcfdff,#f3f6fd);
}
.wb-dots{display:flex;gap:6px}
.wb-dots i{width:10px;height:10px;border-radius:50%;background:#e2e7f1;display:block}
.wb-dots i:nth-child(1){background:#fca5a5}
.wb-dots i:nth-child(2){background:#fcd34d}
.wb-dots i:nth-child(3){background:#86efac}
.wb-bar em{font-style:normal;font-size:12px;font-weight:600;color:var(--ink-3);letter-spacing:.01em}
.wb-status{margin-left:auto;display:inline-flex;align-items:center;gap:6px;font-size:11.5px;color:var(--ink-3)}
.wb-status i{width:6px;height:6px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px rgba(16,185,129,.16)}

.wb-body{display:grid;grid-template-columns:198px 1fr;min-height:366px}
.wb-side{
  border-right:1px solid var(--line);padding:14px 10px;background:#fbfcff;
  display:flex;flex-direction:column;gap:2px;
}
.wb-item{
  display:flex;align-items:center;gap:9px;padding:9px 12px;border-radius:10px;
  font-size:13px;font-weight:500;color:var(--ink-2);white-space:nowrap;
}
.wb-item svg{
  width:16px;height:16px;flex:0 0 auto;fill:none;stroke:currentColor;
  stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;opacity:.7;
}
.wb-item.active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.wb-item.active svg{opacity:1}

.wb-main{padding:22px 24px;display:flex;flex-direction:column;gap:16px;min-width:0}
.wb-device{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.wb-dev-l{display:flex;align-items:center;gap:9px;font-size:14px}
.wb-dev-l b{font-weight:700;letter-spacing:-.01em}
.dot-live{width:7px;height:7px;border-radius:50%;flex:0 0 auto;background:var(--green);box-shadow:0 0 0 3px rgba(16,185,129,.16)}
.tag-ok{font-size:10.5px;font-weight:700;color:#047857;background:#d1fae5;padding:2px 8px;border-radius:99px}
.wb-dev-r{font-size:11.5px;color:var(--ink-3)}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}

.wb-task{background:var(--surface-2);border:1px solid var(--line);border-radius:12px;padding:13px 15px}
.wb-task-top{display:flex;justify-content:space-between;gap:10px;font-size:12.5px;color:var(--ink-2);margin-bottom:9px}
.wb-progress{height:6px;border-radius:99px;background:#e4e9f5;overflow:hidden}
.wb-progress i{display:block;height:100%;border-radius:99px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  box-shadow:0 0 12px rgba(79,70,229,.45);}

.wb-log{list-style:none;display:flex;flex-direction:column;font-size:12.5px;color:var(--ink-2);font-family:var(--mono)}
.wb-log li{display:flex;gap:12px;padding:8px 0;border-bottom:1px dashed var(--line);line-height:1.5}
.wb-log li:last-child{border-bottom:0}
.wb-log li span{color:var(--ink-3);flex:0 0 auto}
.wb-log li b{color:var(--brand);font-weight:600}
.wb-log li.ok{color:#047857}

@media(max-width:900px){
  .wb-head{grid-template-columns:1fr;gap:24px;align-items:start;margin-bottom:32px}
  .wb-points{flex-direction:row;flex-wrap:wrap;gap:8px 22px}
  .wb-body{grid-template-columns:1fr;min-height:0}
  .wb-side{
    flex-direction:row;overflow-x:auto;border-right:0;border-bottom:1px solid var(--line);
    padding:10px;gap:4px;-webkit-overflow-scrolling:touch;
  }
  .wb-side::-webkit-scrollbar{height:0}
  .wb-main{padding:18px}
  .wb-log{font-size:11.5px}
}
@media(max-width:560px){
  .wb-bar em{display:none}
  .wb-main{padding:16px 14px;gap:14px}
  .wb-log li{gap:9px}
}

/* 超大屏（≥1680）再放宽一档，避免两侧留白过多 */
@media(min-width:1680px){
  :root{--maxw:1360px}
}

/* ---------- 首屏轮播 ---------- */
.hv{position:relative;width:100%;max-width:400px;margin:0 auto}
.hv-frame{
  position:relative;padding:3px;border-radius:30px;
  background:linear-gradient(155deg,var(--brand),var(--brand-2) 52%,var(--teal));
  box-shadow:var(--shadow-lg);animation:floaty 9s ease-in-out infinite;
}
.hv-view{position:relative;border-radius:27px;overflow:hidden;aspect-ratio:1/1.02;background:#0e1220}
.hv-slide{position:absolute;inset:0;opacity:0;transition:opacity .9s ease;pointer-events:none}
.hv-slide.active{opacity:1;pointer-events:auto}

.hv-photo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.92}
.hv-scrim{position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,14,26,.12) 0%,rgba(10,14,26,.06) 40%,rgba(10,14,26,.84) 100%)}
.hv-hud{position:absolute;left:22px;right:22px;bottom:22px;color:#fff}

.hv-chip{
  position:absolute;z-index:3;display:flex;align-items:center;gap:6px;white-space:nowrap;
  background:#fff;border:1px solid var(--line);border-radius:13px;padding:8px 13px;
  font-size:12px;font-weight:600;box-shadow:var(--shadow-md);transition:opacity .5s ease;
}
.hv-chip i{font-style:normal;font-size:13px}
.hv-chip.c1{top:11%;left:-6%;animation:floaty2 6.5s ease-in-out infinite}
.hv-chip.c2{bottom:24%;right:-7%;animation:floaty2 6.5s ease-in-out infinite .9s}
.hv[data-i="1"] .hv-chip,.hv[data-i="2"] .hv-chip{opacity:0}

.hv-dots{display:flex;justify-content:center;gap:7px;margin-top:18px}
.hv-dots button{position:relative;width:22px;height:4px;border-radius:99px;background:#d3dae8;overflow:hidden;
  transition:width .25s ease,background .25s ease}
.hv-dots button.active{width:46px;background:#dde3f0}
/* 当前页的指示条会随时间填满，让人一眼看出它在动 */
.hv-dots button.active::after{
  content:"";position:absolute;inset:0;border-radius:99px;background:var(--brand);
  transform-origin:left;animation:dotFill 5.2s linear forwards;
}
@keyframes dotFill{from{transform:scaleX(0)}to{transform:scaleX(1)}}
/* 减少动效：轮播照常，只是取消淡入 */
.hv.no-anim .hv-slide{transition:none}
.hv.no-anim .hv-dots button.active::after{animation:none;transform:none}

/* 屏幕 2 · 校准进度 */
.hv-cal{display:flex;flex-direction:column;justify-content:center;gap:18px;padding:26px 22px;
  background:linear-gradient(160deg,#fff,#f5f8ff)}
.cal-head{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--ink);
  padding-bottom:14px;border-bottom:1px solid var(--line)}
.cal-dot{width:7px;height:7px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 3px rgba(79,70,229,.16)}
.cal-item{display:flex;flex-direction:column;gap:7px}
.cal-row{display:flex;justify-content:space-between;font-size:12.5px;color:var(--ink-2)}
.cal-row b{font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums}
.cal-row b.ok{color:#047857}
.cal-row b.wait{color:var(--ink-3);font-weight:600}
.cal-bar{height:5px;border-radius:99px;background:#e7ecf7;overflow:hidden}
.cal-bar i{display:block;height:100%;border-radius:99px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2))}
.cal-foot{font-size:11.5px;color:var(--ink-3);padding-top:12px;border-top:1px solid var(--line)}

/* 屏幕 3 · 图纸 */
.hv-pcb{background:#0d1120;overflow:hidden}
.pcb-grid{position:absolute;inset:0;
  background-image:linear-gradient(rgba(99,102,241,.16) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(99,102,241,.16) 1px,transparent 1px);
  background-size:28px 28px;
  -webkit-mask-image:radial-gradient(circle at 50% 45%,#000 28%,transparent 82%);
  mask-image:radial-gradient(circle at 50% 45%,#000 28%,transparent 82%)}
.pcb-trace{position:absolute;inset:0;opacity:.6}
.pcb-trace svg{width:100%;height:100%}
.pcb-trace path{fill:none;stroke:rgba(129,140,248,.5);stroke-width:1.3}
.pcb-point{
  position:absolute;display:flex;align-items:center;gap:6px;
  font-family:var(--mono);font-size:10.5px;color:#c7d2fe;
  background:rgba(99,102,241,.18);border:1px solid rgba(129,140,248,.42);
  border-radius:99px;padding:4px 9px;backdrop-filter:blur(4px);
}
.pcb-point i{width:6px;height:6px;border-radius:50%;background:#a5b4fc;box-shadow:0 0 0 3px rgba(165,180,252,.22)}
.pcb-point.p1{top:24%;left:14%}
.pcb-point.p2{top:46%;right:12%}
.pcb-point.p3{bottom:26%;left:28%}
.pcb-foot{position:absolute;left:22px;right:22px;bottom:20px;font-size:11.5px;color:rgba(226,232,240,.66)}

/* ---------- 浅紫强调区块（工作台） ---------- */
.section-tint{position:relative;overflow:hidden;
  background:linear-gradient(180deg,#f4f6ff 0%,#e9eefc 52%,#f6f8fd 100%)}
.section-tint::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(680px 420px at 84% -8%,rgba(124,92,255,.18),transparent 62%),
    radial-gradient(560px 380px at 2% 104%,rgba(14,165,165,.10),transparent 64%);
}
.section-tint>.container{position:relative;z-index:1}
.section-tint .wb{box-shadow:0 34px 80px rgba(52,64,120,.16),0 8px 24px rgba(52,64,120,.08)}

/* ---------- 校准流程四步 ---------- */
.flow{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.flow-step{
  position:relative;padding:26px 22px;background:#fff;border:1px solid var(--line);
  border-radius:18px;box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.flow-step:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(79,70,229,.28)}
.flow-step:not(:last-child)::after{
  content:"";position:absolute;right:-12px;top:52px;width:6px;height:6px;
  border-top:1.5px solid #c9d2e4;border-right:1.5px solid #c9d2e4;
  transform:rotate(45deg);
}
.step-num{display:inline-block;font-family:var(--mono);font-size:11.5px;font-weight:700;
  letter-spacing:.12em;color:var(--brand);margin-bottom:12px}
.step-num::after{content:"";display:block;width:22px;height:2px;border-radius:2px;
  background:var(--brand);opacity:.25;margin-top:8px}
.flow-step h3{font-size:16px;font-weight:700;letter-spacing:-.015em;margin-bottom:7px}
.flow-step p{font-size:13.4px;line-height:1.72;color:var(--ink-2);margin-bottom:16px}
.frag{display:flex;align-items:center;gap:6px;flex-wrap:wrap;font-size:11.5px;color:var(--ink-3);
  background:var(--surface-2);border:1px solid var(--line);border-radius:9px;padding:8px 10px}
.frag .mono{color:var(--ink);font-weight:600}

@media(max-width:1080px){
  .hv{max-width:356px}
  .hv-chip.c1{left:-4%}
  .hv-chip.c2{right:-5%}
}
@media(max-width:900px){
  .hv{max-width:340px}
  .flow{grid-template-columns:1fr 1fr}
  .flow-step::after{display:none}
}
@media(max-width:560px){
  .flow{grid-template-columns:1fr}
  .hv-chip{font-size:11px;padding:7px 10px}
  .hv-chip.c1{left:-2%}
  .hv-chip.c2{right:-3%}
  .hv-cal{padding:22px 18px;gap:15px}
}

/* ==========================================================================
   手机端专属布局（≤768px）
   桌面版是"左右分栏 + 宽表格"，手机版重新排布：
   全屏菜单 / 居中首屏 / 双列功能卡 / 横向滑动流程
   ========================================================================== */

@media(max-width:768px){
  :root{--nav-h:60px}

  .container{padding:0 16px}
  .logo-text em{display:none}
  .logo{font-size:16px;gap:9px}
  .logo .mark{width:32px;height:32px;border-radius:10px;font-size:14px}
  .nav-right .btn{padding:9px 14px;font-size:13.5px}

  /* ---- 全屏菜单 ----
     注意：.nav 有 backdrop-filter，会成为 fixed 子元素的包含块，
     所以这里用 absolute + 高度撑满，而不是 position:fixed */
  .nav-links{
    display:none;position:absolute;left:0;right:0;top:100%;
    height:calc(100vh - var(--nav-h));height:calc(100dvh - var(--nav-h));
    z-index:95;flex-direction:column;align-items:stretch;gap:0;
    padding:12px 20px 32px;margin:0;
    background:#fafbff;
    overflow-y:auto;max-height:none;-webkit-overflow-scrolling:touch;
  }
  .nav-links.open{display:flex;animation:sheetIn .26s cubic-bezier(.22,1,.36,1)}
  @keyframes sheetIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
  .nav-links a{
    display:flex;align-items:center;justify-content:space-between;
    padding:17px 4px;border-bottom:1px solid var(--line);border-radius:0;
    font-size:17px;font-weight:600;color:var(--ink);
  }
  .nav-links a::after{content:"›";color:var(--ink-3);font-size:20px;line-height:1}
  .nav-links a.active{color:var(--brand);background:none}

  /* ---- 首屏 ---- */
  .hero{padding-top:calc(var(--nav-h) + 28px);padding-bottom:44px}
  .hero-grid{gap:32px}
  .badge{font-size:11.5px;padding:6px 12px 6px 10px;margin-bottom:18px}
  .hero-title{font-size:clamp(1.95rem,8.8vw,2.5rem);line-height:1.12;letter-spacing:-.04em;margin-bottom:16px}
  .hero-sub{font-size:14.5px;line-height:1.75;margin-bottom:12px}
  .typed{font-size:11.5px;margin-bottom:22px;gap:6px}
  .tw-text{max-width:58vw;overflow:hidden;text-overflow:ellipsis}
  .btn-row{width:100%;gap:10px;margin-bottom:30px}
  .btn-row .btn{flex:1 1 100%;padding:14px 18px;font-size:15px}

  /* 数据改成 2×2 网格，带分隔线 */
  .hero-meta{
    display:grid;grid-template-columns:1fr 1fr;gap:0;width:100%;
    border-top:1px solid var(--line);
  }
  .hero-meta > div{padding:14px 12px;border-bottom:1px solid var(--line)}
  .hero-meta > div:nth-child(odd){border-right:1px solid var(--line);padding-left:0}
  .hero-meta > div:nth-child(even){padding-left:16px}
  .hero-meta .k{font-size:1.3rem}
  .hero-meta .v{font-size:11.5px}

  .hv{max-width:min(78vw,320px)}
  .hv-chip{font-size:10.5px;padding:6px 9px;border-radius:10px}
  .hv-chip.c1{top:6%;left:-9%}
  .hv-chip.c2{bottom:20%;right:-9%}
  .hv-dots{margin-top:14px}

  .model-strip{margin-top:36px;padding:11px 14px;border-radius:14px;gap:10px}
  .strip-label{font-size:10.5px}
  .model-strip .chip{font-size:11.5px;padding:5px 11px}

  /* ---- 区块 ---- */
  .section{padding:60px 0}
  .sec-head{margin-bottom:28px}
  .sec-tag{font-size:11px;letter-spacing:.14em;margin-bottom:12px}
  .sec-title{font-size:clamp(1.45rem,6.4vw,1.8rem);letter-spacing:-.03em}
  .sec-desc{font-size:13.5px;line-height:1.7}

  /* ---- 工作台：像手机 App 窗口 ---- */
  .wb-head{grid-template-columns:1fr;gap:18px;margin-bottom:24px}
  .wb-points{flex-direction:column;gap:8px;font-size:12.5px}
  .wb{border-radius:20px}
  .wb-bar{padding:11px 14px;gap:10px}
  .wb-bar em{font-size:11px}
  .wb-body{grid-template-columns:1fr;min-height:0}
  .wb-side{
    flex-direction:row;overflow-x:auto;gap:6px;padding:10px 12px;
    border-right:0;border-bottom:1px solid var(--line);scrollbar-width:none;
    scroll-snap-type:x proximity;
  }
  .wb-side::-webkit-scrollbar{display:none}
  .wb-item{
    flex:0 0 auto;padding:8px 12px;border-radius:99px;font-size:12.5px;
    background:#fff;border:1px solid var(--line);scroll-snap-align:start;
  }
  .wb-item.active{background:var(--brand-soft);border-color:rgba(79,70,229,.25)}
  .wb-main{padding:16px 14px;gap:14px}
  .wb-device{gap:6px}
  .wb-dev-l{font-size:13px}
  .wb-dev-r{font-size:10.5px;width:100%}
  .wb-task{padding:11px 12px;border-radius:10px}
  .wb-task-top{font-size:11.5px}
  .wb-log{font-size:11px}
  .wb-log li{padding:7px 0;gap:9px}

  /* ---- 功能卡：双列紧凑 ---- */
  .feat-grid{grid-template-columns:1fr 1fr;gap:10px}
  .feat{padding:16px 14px;border-radius:15px}
  .feat-ic{width:38px;height:38px;border-radius:11px;margin-bottom:12px}
  .feat-ic svg{width:18px;height:18px}
  .feat h3{font-size:13.5px;margin-bottom:5px}
  .feat p{font-size:11.8px;line-height:1.6;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
  .feat .tag{font-size:10px;padding:3px 8px;margin-top:10px}

  /* ---- 下载：整行卡片 ---- */
  .dl{padding:14px;border-radius:14px;gap:12px;flex-wrap:wrap}
  .dl .ic{width:42px;height:42px;border-radius:12px}
  .dl .ic svg{width:19px;height:19px}
  .dl .meta h4{font-size:13.5px}
  .dl .meta p{font-size:11.5px;margin:3px 0 7px}
  .dl .btn{padding:8px 16px;font-size:12.5px;border-radius:9px;width:auto}

  /* ---- 流程：横向滑动 ---- */
  .flow{
    display:flex;gap:10px;overflow-x:auto;scroll-snap-type:x mandatory;
    margin:0 -16px;padding:2px 16px 12px;scrollbar-width:none;
  }
  .flow::-webkit-scrollbar{display:none}
  .flow-step{flex:0 0 76%;padding:20px 18px;border-radius:16px;scroll-snap-align:center}
  .flow-step::after{display:none}
  .flow-step h3{font-size:14.5px}
  .flow-step p{font-size:12.2px;margin-bottom:12px}
  .step-num{font-size:10.5px;margin-bottom:8px}
  .frag{font-size:10.5px;padding:7px 9px}

  /* ---- 图纸 / 助手 ---- */
  .teaser-grid{grid-template-columns:1fr;gap:12px}
  .teaser{padding:20px 18px;border-radius:16px}
  .teaser .ic,.teaser-ic{width:42px;height:42px;border-radius:12px;margin-bottom:12px}
  .teaser h3{font-size:15px}
  .teaser p{font-size:12.5px}

  .map-wrap{padding:12px;border-radius:16px;gap:12px}
  .map-svg{height:230px;border-radius:12px}
  .map-note{font-size:11px}
  .case{padding:10px 4px}
  .case b{font-size:12.5px}
  .case span{font-size:11.5px}

  /* ---- 更新日志 ---- */
  .log-wrap{grid-template-columns:1fr;gap:24px}
  .timeline{padding-left:24px}
  .tl-item{padding-bottom:26px}
  .tl-item::before{left:-21px;width:11px;height:11px}
  .tl-item h4{font-size:14.5px}
  .tl-item .ver{font-size:10.5px;padding:2px 8px}
  .tl-item ul{font-size:12.5px}
  .news .case{padding:14px}

  /* ---- 页脚 ---- */
  footer{padding:44px 0 24px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:26px}
  .foot-brand{grid-column:1/-1}
  .foot-brand p{font-size:12.5px}
  .foot-col h5{font-size:11.5px;margin-bottom:12px}
  .foot-col a{font-size:13px;padding:5px 0}
  .foot-bottom{margin-top:28px;padding-top:18px;font-size:11px;gap:6px}

  /* ---- 弹窗 ---- */
  .modal{border-radius:20px;padding:26px 22px 24px}
  .modal h3{font-size:19px}

  .toast{bottom:24px;left:16px;right:16px;transform:translateY(16px);text-align:center}
  .toast.show{transform:translateY(0)}
}

/* 超小屏（≤380）再收一档 */
@media(max-width:380px){
  .feat-grid{grid-template-columns:1fr}
  .hero-meta{grid-template-columns:1fr 1fr}
  .flow-step{flex:0 0 84%}
}

/* 减少动效 */
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1!important;transform:none!important}
}