/* ============================================================
   ChinaBridge Design System — "Transpacific Express"
   Aesthetic: Modern American DTC × Intelligent Logistics
   Fonts:    Bricolage Grotesque (display) / Instrument Sans (body)
             IBM Plex Mono (data & tracking IDs)
   Palette:  Cobalt #2A5BFF · Vermilion #FF5233 · Navy #0A1B3D
             Paper #F7F5F1 (warm off-white) · Deep ink #0B1220
   Memory point: the animated China → U.S. route arc
   ============================================================ */

/* ---- 1. Tokens ---- */
:root{
  --ink:#0E1526; --ink-2:#3E4C63; --muted:#5B6B84; --faint:#8A97AC;
  --cobalt:#2A5BFF; --cobalt-deep:#1B44C9; --cobalt-ink:#15339B;
  --sky:#E8F0FF; --sky-2:#F2F6FF; --sky-border:#C9DBFF;
  --vermilion:#FF5233; --vermilion-soft:#FFEDE8;
  --gold:#FFB93D;
  --paper:#F7F5F1; --paper-2:#EFECE5;
  --navy:#0A1B3D; --navy-2:#0F2552; --navy-deep:#071228;
  --line:#E4E2DC; --line-soft:#ECEAE4;
  --green:#0FA968; --green-soft:#E6F7EF;
  --amber:#E8930C; --amber-soft:#FCF1DD;
  --danger:#D92D20; --danger-soft:#FDECEA;
  --white:#fff;
  --radius:20px; --radius-sm:13px; --radius-lg:28px;
  --shadow-sm:0 1px 2px rgba(14,21,38,.05),0 2px 8px rgba(14,21,38,.05);
  --shadow-md:0 4px 14px rgba(14,21,38,.07),0 12px 32px rgba(14,21,42,.08);
  --shadow-lg:0 12px 28px rgba(15,28,72,.12),0 32px 64px rgba(15,28,72,.16);
  --font-display:"Bricolage Grotesque","Instrument Sans",Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:"Instrument Sans",Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"IBM Plex Mono","SF Mono",Menlo,Consolas,monospace;
}

/* ---- 2. Base ---- */
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font-body);color:var(--ink);background:var(--white);line-height:1.65;font-size:16.5px;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img{max-width:100%}
::selection{background:#2A5BFF33}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--ink);line-height:1.08;letter-spacing:-.022em;font-weight:800}
h3{font-size:21px;letter-spacing:-.01em}
.container{width:min(1200px,92%);margin:auto}
.en{line-height:1.6}.zh{line-height:1.75;letter-spacing:.02em}

/* ---- 2b. Chinese typography fixes ---- */
/* Chinese text is dense; negative Latin tracking and tight line-height break readability. */
.zh,[lang="zh"]{line-height:1.75;letter-spacing:.02em;word-break:normal;overflow-wrap:anywhere}
h1 .zh,h2 .zh,h3 .zh,h4 .zh,.hero h1 .zh{font-family:var(--font-body);font-weight:700;line-height:1.18;letter-spacing:.03em}
body.bilingual h1,body.bilingual h2,body.bilingual h3,body.bilingual h4{line-height:1.12;letter-spacing:.01em}
body.bilingual .lead,body.bilingual p .zh,body.bilingual .card p .zh{line-height:1.8}
.kicker .zh,.eyebrow .zh,.top .zh{letter-spacing:.04em}

/* focus states */
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #2A5BFF55;outline-offset:2px;border-radius:6px}

/* ---- 3. Topbar & Nav ---- */
.top{background:var(--navy-deep);color:#B9CCEE;font-size:12.5px;text-align:center;padding:8px 14px;letter-spacing:.04em;font-family:var(--font-mono)}
.top .zh{color:#8FA8D4}
.nav{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.92);backdrop-filter:saturate(1.5) blur(20px);-webkit-backdrop-filter:saturate(1.5) blur(20px);border-bottom:1px solid var(--line)}
.navin{height:96px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.logo{display:inline-flex;align-items:center;text-decoration:none}
.logo img{height:40px;width:auto;display:block;max-width:200px;object-fit:contain;image-rendering:-webkit-optimize-contrast}
.footer .logo img{height:46px;border-radius:10px;background:#fff}
.footer .logo{color:#fff}
.menu{display:flex;gap:4px;align-items:center;font-size:14.5px;color:var(--ink-2);font-weight:600}
.menu a{padding:8px 13px;border-radius:9px;transition:all .18s ease}
.menu a:hover{color:var(--cobalt);background:var(--sky)}
.menu a.active{color:var(--cobalt);background:var(--sky)}
.lang{border:1px solid var(--line);background:#fff;border-radius:10px;padding:8px 12px;cursor:pointer;font-family:var(--font-mono);font-size:12px;font-weight:600;color:var(--ink-2);transition:all .18s}
.lang:hover{border-color:var(--sky-border);background:var(--sky-2)}
.lang.mobile{display:none}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;border:1px solid transparent;border-radius:12px;padding:13px 22px;font-weight:700;font-size:15px;cursor:pointer;font-family:var(--font-body);letter-spacing:-.005em;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s;position:relative}
.btn:active{transform:translateY(1px) scale(.99)}
.btn.primary{background:var(--cobalt);color:#fff;box-shadow:0 4px 14px rgba(42,91,255,.32)}
.btn.primary:hover{background:var(--cobalt-deep);box-shadow:0 6px 22px rgba(42,91,255,.42);transform:translateY(-1px)}
.btn.secondary{background:#fff;border-color:var(--sky-border);color:var(--cobalt)}
.btn.secondary:hover{border-color:var(--cobalt);background:var(--sky-2);transform:translateY(-1px)}
.btn.dark{background:var(--navy);color:#fff}
.btn.dark:hover{background:var(--navy-2);transform:translateY(-1px)}
.btn.ghost{background:transparent;color:var(--ink-2)}
.btn.ghost:hover{background:var(--paper)}
.btn .arr{transition:transform .2s}
.btn:hover .arr{transform:translateX(3px)}

/* Hamburger drawer */
.burger{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:11px;background:#fff;cursor:pointer;position:relative;z-index:75}
.burger i,.burger i::before,.burger i::after{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:absolute;left:11px;transition:all .22s ease}
.burger i{top:20px}
.burger i::before,.burger i::after{content:"";left:0}
.burger i::before{top:-5.5px}
.burger i::after{top:5.5px}
.drawer{position:fixed;inset:0;z-index:70;pointer-events:none}
.drawer .scrim{position:absolute;inset:0;background:rgba(7,18,40,.5);opacity:0;transition:opacity .25s;backdrop-filter:blur(3px)}
.drawer .panel{position:absolute;top:0;right:0;bottom:0;width:min(340px,88vw);background:#fff;transform:translateX(102%);transition:transform .3s cubic-bezier(.2,.8,.2,1);padding:26px 24px;display:flex;flex-direction:column;gap:4px;overflow-y:auto;box-shadow:-20px 0 60px rgba(7,18,40,.2)}
.drawer.open{pointer-events:auto}
.drawer.open .scrim{opacity:1}
.drawer.open .panel{transform:translateX(0)}
.drawer a.ditem{display:flex;align-items:center;justify-content:space-between;padding:14px 12px;border-radius:12px;font-family:var(--font-display);font-size:18px;font-weight:700;color:var(--ink);transition:background .15s}
.drawer a.ditem:hover{background:var(--sky-2)}
.drawer a.ditem .arr{color:var(--faint)}
.drawer .dcta{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.drawer .dfoot{margin-top:auto;padding-top:24px;font-size:12.5px;color:var(--faint);font-family:var(--font-mono)}

/* ---- 4. Hero ---- */
.hero{position:relative;padding:96px 0 64px;background:linear-gradient(180deg,#F4F8FF 0%,#FBFCFF 68%,#fff 100%);overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(#2A5BFF0D 1px,transparent 1px),linear-gradient(90deg,#2A5BFF0D 1px,transparent 1px);background-size:44px 44px;pointer-events:none}
.hero::after{content:"";position:absolute;top:-220px;right:-180px;width:560px;height:560px;background:radial-gradient(circle,#B9CFFB55 0%,transparent 65%);pointer-events:none}
.hero::before{animation:gridDrift 24s linear infinite}
@keyframes gridDrift{from{background-position:0 0}to{background-position:44px 44px}}
.heroGrid{display:grid;grid-template-columns:1.04fr .96fr;gap:56px;align-items:center;position:relative;z-index:2}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid transparent;color:var(--cobalt-ink);font-weight:700;font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;padding:7px 14px;border-radius:999px;font-family:var(--font-mono);box-shadow:var(--shadow-sm),inset 0 0 0 1px rgba(42,91,255,.12);background-clip:padding-box;position:relative}
.eyebrow::before{content:"";position:absolute;inset:0;border-radius:999px;padding:1px;background:linear-gradient(135deg,var(--cobalt),var(--vermilion));-webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);-webkit-mask-composite:source-out;mask-composite:exclude;pointer-events:none}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--vermilion);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.35;transform:scale(.7)}}
.hero h1{font-size:clamp(44px,6.2vw,76px);line-height:1.0;letter-spacing:-.035em;margin:20px 0;font-weight:800}
.hero h1 em{font-style:normal;color:var(--cobalt);position:relative;text-shadow:0 0 34px rgba(42,91,255,.28)}
.hero h1 em::after{content:"";position:absolute;left:0;bottom:6px;width:100%;height:12px;background:linear-gradient(90deg,#FF523326,#FF8A6E33);z-index:-1;border-radius:3px;transform:skewX(-8deg)}
.hero p{font-size:19px;color:var(--ink-2);max-width:600px}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin:30px 0}
.trustline{display:flex;flex-wrap:wrap;gap:8px 22px;color:var(--muted);font-size:13.5px;font-weight:600}
.trustline span{display:inline-flex;align-items:center;gap:7px}
.trustline svg{width:15px;height:15px;color:var(--green);flex:none}

/* Animated app mock */
.mock{position:relative}
.mock::before{content:"";position:absolute;inset:-14% -8% -4% -8%;background:radial-gradient(60% 60% at 60% 40%,#B9CFFB66,transparent 70%);z-index:0;pointer-events:none}
.app{position:relative;z-index:1;background:#fff;border:1px solid #D5E2FB;border-radius:24px;overflow:hidden;box-shadow:var(--shadow-lg),0 0 0 1px rgba(42,91,255,.08),0 24px 70px rgba(42,91,255,.15)}
.app::before{content:"";position:absolute;inset:-2px;border-radius:26px;background:linear-gradient(135deg,rgba(42,91,255,.22),rgba(255,82,51,.1));z-index:-1;filter:blur(16px);opacity:.7;pointer-events:none}
.appbar{padding:16px 18px;border-bottom:1px solid var(--line-soft);display:flex;justify-content:space-between;align-items:center;background:linear-gradient(180deg,#FAFCFF,#fff)}
.appbar b{font-family:var(--font-display);font-size:15px;letter-spacing:-.01em}
.appbar .pill{margin:0}
.pill{background:var(--green-soft);color:#067647;border:1px solid #BFE8D2;border-radius:999px;padding:4px 10px;font-size:11px;font-weight:800;font-family:var(--font-mono);letter-spacing:.02em}
.pill.blue{background:var(--sky);color:var(--cobalt-ink);border-color:var(--user-border,var(--sky-border))}
.pill.amber{background:var(--amber-soft);color:#9A6203;border-color:#F3DDB3}
.pill.red{background:var(--vermilion-soft);color:#C23318;border-color:#FFD3C7}
.appcard{margin:14px;border:1px solid var(--line-soft);border-radius:16px;padding:16px}
.appcard small{font-family:var(--font-mono);font-size:10.5px;color:var(--faint);text-transform:uppercase;letter-spacing:.08em}
.appcard h3{margin:6px 0 10px;font-size:17px}
.progress{height:7px;background:#EDF0F5;border-radius:10px;overflow:hidden}
.progress i{display:block;height:100%;background:linear-gradient(90deg,var(--cobalt),#6E8DFF);border-radius:10px}
.row{display:flex;justify-content:space-between;align-items:center;gap:15px;margin:9px 0;font-size:14.5px}
.row strong{font-size:22px;font-family:var(--font-display);letter-spacing:-.02em}
.row del{color:var(--faint);font-weight:500}
.darkcard{background:linear-gradient(135deg,var(--navy) 0%,var(--navy-2));color:#fff;border-radius:14px;padding:15px 16px;display:flex;justify-content:space-between;align-items:center;border:1px solid #1E3A73}
.darkcard .quote{font-size:12px;color:#8FA8D4}
.darkcard .big{font-size:31px;font-weight:800;font-family:var(--font-display);letter-spacing:-.03em}
.big{font-size:31px;font-weight:800;font-family:var(--font-display);letter-spacing:-.03em}
.darkcard .big em{font-style:normal;color:var(--gold)}
/* AI chat mock */
.aimock{display:flex;flex-direction:column;gap:10px;padding:4px 0}
/* Hero chat: FIXED height so the page never grows or jumps as messages stream
   in. Content is bottom-anchored; older messages clip behind a top fade mask. */
.aimock[data-hero-chat]{height:296px;justify-content:flex-end;overflow:hidden;position:relative;transition:opacity .32s ease}
.aimock[data-hero-chat].fading{opacity:0}
.aimock[data-hero-chat]::before{content:"";position:absolute;left:0;right:0;top:0;height:54px;background:linear-gradient(180deg,#fff 10%,rgba(255,255,255,.88) 48%,rgba(255,255,255,0));z-index:2;pointer-events:none}
.aimsg{max-width:86%;padding:11px 14px;border-radius:15px;font-size:14px;line-height:1.5;animation:msgIn .5s cubic-bezier(.2,.8,.2,1) both}
.aimsg.user{align-self:flex-end;background:var(--cobalt);color:#fff;border-bottom-right-radius:5px}
.aimsg.bot{align-self:flex-start;background:var(--sky-2);border:1px solid var(--sky-border);color:var(--ink);border-bottom-left-radius:5px}
.aimsg.bot b{color:var(--cobalt-ink)}
.aimsg small{display:block;margin-top:5px;font-family:var(--font-mono);font-size:10px;color:var(--faint);letter-spacing:.04em}
.aimsg.user small{color:#C7D6FF}
@keyframes msgIn{from{opacity:0;transform:translateY(10px) scale(.97)}to{opacity:1;transform:none}}
.aimock .typing{align-self:flex-start;display:flex;gap:4px;padding:12px 14px;background:var(--sky-2);border:1px solid var(--sky-border);border-radius:15px;border-bottom-left-radius:5px}
.aimock .typing i{width:6px;height:6px;border-radius:50%;background:var(--faint);animation:tp 1.2s infinite}
.aimock .typing i:nth-child(2){animation-delay:.15s}
.aimock .typing i:nth-child(3){animation-delay:.3s}
@keyframes tp{0%,60%,100%{opacity:.25;transform:translateY(0)}30%{opacity:1;transform:translateY(-4px)}}
.cursor{display:inline-block;width:8px;height:16px;background:var(--cobalt);border-radius:2px;vertical-align:-2px;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

/* ---- 5. Sections ---- */
.section{padding:96px 0}
.section.soft{background:var(--paper)}
.section.center{text-align:center}
.section h2{font-size:clamp(30px,3.8vw,46px);margin:10px 0 14px}
.lead{color:var(--muted);max-width:740px;margin:0 auto 44px;font-size:17.5px}
.kicker{color:var(--cobalt);font-weight:800;font-size:12.5px;letter-spacing:.12em;text-transform:uppercase;font-family:var(--font-mono)}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.audgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(176px,1fr));gap:14px}
.audcard{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:20px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s;text-decoration:none;color:inherit;display:block}
.audcard:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--sky-border)}
.audcard .ai{width:38px;height:38px;border-radius:11px;background:var(--sky);display:grid;place-items:center;font-size:18px;margin-bottom:12px;border:1px solid var(--sky-border)}
.audcard b{display:block;font-family:var(--font-display);font-size:15.5px;letter-spacing:-.01em;margin-bottom:5px}
.audcard span.n{display:block;font-size:13px;color:var(--muted);line-height:1.5}
.audcard .go{display:inline-flex;align-items:center;gap:5px;margin-top:11px;font-size:12.5px;font-weight:700;color:var(--cobalt)}
.card{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:28px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--sky-border)}
.card h3{margin:0 0 8px}
.card p{color:var(--muted);font-size:14.5px;margin:0 0 6px}
.icon{width:46px;height:46px;border-radius:13px;background:var(--sky);display:grid;place-items:center;color:var(--cobalt);font-weight:800;margin-bottom:16px;border:1px solid var(--sky-border)}
.icon svg{width:22px;height:22px}
.stepnum{font-family:var(--font-mono);font-size:11.5px;font-weight:700;color:var(--cobalt);background:var(--sky);border:1px solid var(--sky-border);padding:4px 9px;border-radius:7px;display:inline-block;letter-spacing:.06em}
.stepnum.red{color:#C23318;background:var(--vermilion-soft);border-color:#FFD3C7}

/* Route visual */
.route{position:relative;padding:26px 0 10px;overflow:hidden}
.route .arc{width:100%;height:auto;display:block}
.route .plane{offset-path:path("M 30 120 C 260 -30, 640 -30, 870 120");offset-rotate:auto;animation:fly 7s ease-in-out infinite;position:relative;left:-11px;top:-11px;width:22px;height:22px;filter:drop-shadow(0 4px 6px rgba(42,91,255,.35))}
@keyframes fly{0%{offset-distance:0%;opacity:0}8%{opacity:1}50%{offset-distance:52%}92%{opacity:1}100%{offset-distance:100%;opacity:0}}
.route .lab{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;fill:var(--faint)}
.route .labc{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;fill:var(--cobalt-ink)}

/* Comparison: separate vs consolidated */
.compare{display:grid;grid-template-columns:1fr 52px 1fr;gap:14px;align-items:stretch}
.compare .mid{display:grid;place-items:center;color:var(--faint);font-family:var(--font-display);font-weight:800}
.compare .mid svg{width:30px;height:30px;color:var(--cobalt);animation:nudge 2.6s ease-in-out infinite}
@keyframes nudge{0%,100%{transform:translateX(0)}50%{transform:translateX(6px)}}
.pkgbox{border:1.5px dashed #B9CFFB;border-radius:16px;padding:16px;display:flex;flex-wrap:wrap;gap:9px;background:#FBFDFF;min-height:118px;align-content:flex-start}
.pkgbox i{width:38px;height:38px;border-radius:10px;background:#fff;border:1px solid var(--sky-border);display:grid;place-items:center;font-size:17px;font-style:normal;box-shadow:var(--shadow-sm)}
.pkgbox.merged{border-color:var(--cobalt);border-style:solid;background:var(--sky-2);position:relative}
.pkgbox.merged::after{content:attr(data-shipment);position:absolute;right:12px;bottom:8px;font-family:var(--font-mono);font-size:10px;color:var(--cobalt-ink);letter-spacing:.06em;font-weight:700}
body.bilingual .pkgbox.merged::after{content:attr(data-shipment-zh)}
.pkgbox .price-tag{align-self:center;margin-left:auto;font-family:var(--font-display);font-weight:800;font-size:19px;color:var(--ink)}
.pkgbox .price-tag.cut{color:var(--faint);text-decoration:line-through;font-size:15px;font-weight:700}
.pkgbox .price-tag.save{color:#067647}
.compare-note{margin-top:14px;font-size:13px;color:#3E8BC1}

/* ---- 6. Navy band ---- */
.band{background:var(--navy);color:#fff;padding:88px 0;position:relative;overflow:hidden}
.band::before{content:"";position:absolute;inset:0;background-image:linear-gradient(#FFFFFF08 1px,transparent 1px),linear-gradient(90deg,#FFFFFF08 1px,transparent 1px);background-size:44px 44px}
.band .kicker{color:#8FB0FF}
.band h2{font-size:clamp(30px,3.8vw,46px);margin:10px 0 16px;color:#fff}
.band p{color:#B9CCEE}
.band .card{background:#0F2552;border-color:#1E3A73;color:#fff}
.band .card h3{color:#fff}
.band .card:hover{transform:none;box-shadow:var(--shadow-lg);border-color:#2E4F94}
.featurelist{list-style:none;padding:0;margin:18px 0}
.featurelist li{margin:12px 0;color:var(--ink-2);display:flex;gap:11px;align-items:flex-start}
.featurelist li::before{content:"✓";color:var(--green);font-weight:800;flex:none;margin-top:1px}

/* Stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stat{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:26px}
.stat .num{font-family:var(--font-display);font-size:42px;font-weight:800;letter-spacing:-.03em;color:var(--ink);line-height:1;font-variant-numeric:tabular-nums}
.stat .num em{font-style:normal;color:var(--cobalt);font-size:26px;vertical-align:6px}
.stat .lab2{margin-top:10px;font-size:13.5px;color:var(--muted);font-weight:600}
.stat .d{font-family:var(--font-mono);font-size:10.5px;color:var(--faint);text-transform:uppercase;letter-spacing:.08em;margin-top:3px}

/* Testimonial cards */
.tcard{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:26px;display:flex;flex-direction:column;gap:14px}
.tcard .stars{color:var(--gold);font-size:15px;letter-spacing:2px}
.tcard p{margin:0;font-size:15.5px;color:var(--ink-2);line-height:1.6}
.tcard .who{display:flex;align-items:center;gap:12px;margin-top:auto}
.tcard .who .av{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--cobalt),#15339B);color:#fff;display:grid;place-items:center;font-weight:800;font-family:var(--font-display);font-size:15px;flex:none}
.tcard .who b{display:block;font-size:14.5px}
.tcard .who small{color:var(--faint);font-size:12.5px}

/* ---- 7. Calculator & forms ---- */
.calc{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:start}
.calcbox{background:linear-gradient(160deg,var(--navy) 0%,#0D2148 100%);color:#fff;border-radius:22px;padding:30px;border:1px solid #1E3A73;box-shadow:var(--shadow-lg)}
.calcbox h3{color:#fff}
.field{margin:14px 0}
.field label{display:block;font-size:13px;margin-bottom:7px;color:var(--ink-2);font-weight:600}
.calcbox .field label{color:#B9CCEE}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;border-radius:11px;border:1px solid #D6D3CC;background:#fff;color:var(--ink);font-family:var(--font-body);font-size:15px;transition:border-color .15s,box-shadow .15s}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--cobalt);box-shadow:0 0 0 3px #2A5BFF22;outline:none}
.field input::placeholder{color:#AAB4C6}
.calcbox .field input,.calcbox .field select{background:#132B58;border-color:#27477E;color:#fff}
.calcbox .field input:focus{border-color:#6E8DFF;box-shadow:0 0 0 3px #2A5BFF33}
.calcbox .field input::placeholder{color:#5F7BB0}
.unit-row{display:flex;gap:6px;background:#132B58;border:1px solid #27477E;border-radius:10px;padding:4px;margin-bottom:6px;width:max-content}
.unit-row button{border:0;background:transparent;color:#8FA8D4;padding:6px 14px;border-radius:8px;cursor:pointer;font-family:var(--font-mono);font-size:12px;font-weight:700;transition:all .15s}
.unit-row button.on{background:var(--cobalt);color:#fff;box-shadow:0 2px 8px #2A5BFF66}
.unit-row button:hover:not(.on){color:#fff}
.result{margin-top:16px;background:#132B58;border:1px solid #27477E;border-radius:15px;padding:18px}
.result .quote{font-size:12.5px;color:#8FA8D4;font-family:var(--font-mono)}
.notice{font-size:12.5px;color:#8FA8D4}
.lane-hint{font-size:12px;color:#6E8DC8;margin-top:6px;font-family:var(--font-mono)}
/* tier bars */
.tiers{margin-top:16px;display:flex;flex-direction:column;gap:11px}
.tier{display:grid;grid-template-columns:86px 1fr 74px;align-items:center;gap:12px;font-size:13px}
.tier .tn{font-family:var(--font-mono);font-size:11px;text-transform:uppercase;letter-spacing:.07em;color:#8FA8D4}
.tier .bar{height:9px;background:#0B1B3A;border-radius:8px;overflow:hidden;position:relative}
.tier .bar i{position:absolute;inset:0;right:auto;background:linear-gradient(90deg,#3D6AFF,#6E8DFF);border-radius:8px;transition:width .7s cubic-bezier(.2,.8,.2,1)}
.tier.best .bar i{background:linear-gradient(90deg,var(--vermilion),#FF8A6E)}
.tier.best .tn{color:#FFB4A0}
.tier .tv{font-family:var(--font-display);font-weight:800;font-size:15px;text-align:right;font-variant-numeric:tabular-nums}
.tier.best .tv{color:#FFB4A0}
.tiers-cap{font-size:11px;color:#5F7BB0;margin-top:10px;font-family:var(--font-mono)}

/* volumetric note */
.volchip{display:inline-flex;align-items:center;gap:7px;background:var(--sky-2);border:1px solid var(--sky-border);color:var(--cobalt-ink);border-radius:999px;padding:5px 11px;font-size:12px;font-weight:700;font-family:var(--font-mono)}

/* password strength */
.pw-bars{display:flex;gap:5px;margin-top:7px}
.pw-bars i{height:4px;flex:1;background:#E7E4DE;border-radius:3px;transition:background .25s}
.pw-bars i.on{background:var(--danger)}
.pw-bars.s1 i:nth-child(1),.pw-bars.s1 i:nth-child(-n+1){background:var(--danger)}
.pw-bars.s2 i:nth-child(-n+2){background:var(--amber)}
.pw-bars.s3 i:nth-child(-n+3){background:#A9C4FF}
.pw-bars.s4 i:nth-child(-n+4){background:var(--green)}
.pw-note{font-size:12px;color:var(--faint);margin-top:6px;font-family:var(--font-mono)}

/* address reveal */
.addr-reveal{margin-top:18px;border:1px dashed var(--cobalt);background:var(--sky-2);border-radius:16px;padding:20px;animation:msgIn .5s ease both}
.addr-reveal .mono{font-family:var(--font-mono);font-size:15px;color:var(--ink);line-height:1.8}
.addr-reveal .mono b{color:var(--cobalt-ink)}
.addr-reveal .tip{margin-top:10px;font-size:12.5px;color:var(--muted)}

/* Tracking timeline */
.timeline{display:flex;flex-direction:column;gap:0;margin-top:18px}
.tstep{display:grid;grid-template-columns:34px 1fr;gap:14px;padding-bottom:26px;position:relative}
.tstep:last-child{padding-bottom:0}
.tstep .nd{width:34px;height:34px;border-radius:50%;background:#fff;border:2px solid var(--line);display:grid;place-items:center;color:var(--faint);font-weight:800;z-index:2;transition:all .3s}
.tstep::before{content:"";position:absolute;left:16px;top:34px;bottom:0;width:2px;background:var(--line)}
.tstep:last-child::before{display:none}
.tstep.done .nd{border-color:var(--green);color:#fff;background:var(--green)}
.tstep.now .nd{border-color:var(--cobalt);color:#fff;background:var(--cobalt);box-shadow:0 0 0 6px #2A5BFF2e;animation:pulse 2s infinite}
.tstep.done::before,.tstep.now::before{background:linear-gradient(180deg,var(--cobalt),#B9CFFB)}
.tstep .tt{font-weight:700;font-size:15px}
.tstep .td{font-size:13px;color:var(--muted);font-family:var(--font-mono);margin-top:3px}
.tstep .tx{font-size:13.5px;color:var(--ink-2);margin-top:5px}

/* ---- 8. FAQ / tables ---- */
.faq{border:1px solid var(--line);border-radius:14px;margin:10px 0;background:#fff;transition:border-color .2s,box-shadow .2s}
.faq summary{cursor:pointer;padding:18px 20px;font-weight:700;font-size:15.5px;display:flex;justify-content:space-between;align-items:center;gap:14px;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--font-mono);font-size:19px;color:var(--faint);transition:transform .2s;flex:none}
.faq[open] summary::after{transform:rotate(45deg)}
.faq[open]{border-color:var(--sky-border);box-shadow:var(--shadow-sm)}
.faq div{padding:0 20px 20px;color:var(--muted);font-size:14.5px}
.table{width:100%;border-collapse:separate;border-spacing:0;background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.table th,.table td{text-align:left;padding:15px 18px;border-bottom:1px solid var(--line-soft);font-size:14px}
.table th{background:var(--paper);font-family:var(--font-display);letter-spacing:-.01em}
.table tr:last-child td{border-bottom:0}
.badge{display:inline-block;padding:5px 10px;border-radius:999px;background:var(--paper-2);font-size:12px;font-weight:800;color:var(--ink-2)}
.badge.green{background:var(--green-soft);color:#067647}
.badge.blue{background:var(--sky);color:var(--cobalt-ink)}
.badge.amber{background:var(--amber-soft);color:#9A6203}
.badge.red{background:var(--vermilion-soft);color:#C23318}

/* heroSmall (subpages) */
.heroSmall{position:relative;padding:72px 0 58px;background:linear-gradient(180deg,#F4F8FF,#fff);overflow:hidden}
.heroSmall::before{content:"";position:absolute;inset:0;background-image:linear-gradient(#2A5BFF0D 1px,transparent 1px),linear-gradient(90deg,#2A5BFF0D 1px,transparent 1px);background-size:44px 44px;pointer-events:none}
.heroSmall h1{font-size:clamp(34px,4.8vw,56px);line-height:1.05;margin:12px 0}
.heroSmall p{color:var(--ink-2);font-size:18px;max-width:720px;position:relative}

/* ---- 9. Footer ---- */
.footer{background:var(--navy-deep);color:#B9CCEE;padding:64px 0 28px;position:relative;overflow:hidden}
.footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,#2A5BFF88,transparent)}
.footergrid{display:grid;grid-template-columns:2.2fr 1fr 1fr 1fr;gap:36px}
.footer h4{color:#fff;font-size:15px;margin:0 0 14px}
.footer a{display:block;margin:9px 0;font-size:14px;color:#8FA8D4;transition:color .15s}
.footer a:hover{color:#fff}
.footer p{font-size:14px;color:#8FA8D4;max-width:380px}
.small{font-size:12.5px;color:#5F7BB0;margin-top:28px}
.footer .small{max-width:none}
.socials{display:flex;gap:10px;margin-top:16px}
.socials a{width:36px;height:36px;border-radius:10px;border:1px solid #1E3A73;display:grid;place-items:center;color:#8FA8D4;transition:all .18s;margin:0}
.socials a:hover{border-color:var(--cobalt);color:#fff;background:var(--cobalt)}
.socials svg{width:16px;height:16px}

/* ---- 10. Toast ---- */
.toast{position:fixed;right:22px;bottom:22px;background:var(--ink);color:#fff;padding:14px 18px;border-radius:13px;box-shadow:var(--shadow-lg);display:none;z-index:90;font-size:14px;font-weight:600;border:1px solid #2A3A55;max-width:340px}

/* ----  CSS-only reveals (fallback when JS off) ---- */
html.js .rv{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.2,.8,.2,1),transform .7s cubic-bezier(.2,.8,.2,1)}
html.js .rv.in{opacity:1;transform:none}
html.js .rv[data-d="1"]{transition-delay:.08s}
html.js .rv[data-d="2"]{transition-delay:.16s}
html.js .rv[data-d="3"]{transition-delay:.24s}
/* ---- Language toggle: EN by default, ZH when body.bilingual ----
   Each rule hides ONE language; the other falls back to its natural
   display (block for h1/p, inline for span) — no forced display value. */
body:not(.bilingual) .zh{display:none}
body.bilingual .en{display:none}

/* ---- 12. Responsive ---- */
@media(max-width:1020px){.heroGrid,.calc{grid-template-columns:minmax(0,1fr);gap:44px}.stats{grid-template-columns:1fr 1fr}.grid4{grid-template-columns:1fr 1fr}}
@media(max-width:900px){
  .menu{display:none}
  .burger{display:block}
  .lang.mobile{display:none}
  .grid3{grid-template-columns:1fr}
  .footergrid{grid-template-columns:1fr 1fr}
  .compare{grid-template-columns:1fr}
  .compare .mid{transform:rotate(90deg)}
  .section{padding:72px 0}
  .band{padding:68px 0}
  .navin{height:76px}
  .logo img{height:36px}
  .footer .logo img{height:42px;border-radius:9px;background:#fff}
}
@media(max-width:520px){
  .grid4,.grid2{grid-template-columns:1fr}
  .footergrid{grid-template-columns:1fr}
  .hero{padding:64px 0 52px}
  .section{padding:62px 0}
  .hero h1{font-size:44px}
  .stats{grid-template-columns:1fr 1fr}
  .stat .num{font-size:34px}
  .btn{width:100%}.actions{flex-direction:column}
  .actions .btn{width:100%}
  .navin{height:68px}
  .logo img{height:32px}
  .footer .logo img{height:38px;border-radius:8px;background:#fff}
}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}.route .plane{display:none}}

/* ---- 11. Auth (login) ---- */
.authWrap{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;min-height:calc(100vh - 230px);padding:40px 0 60px}
.authCard{max-width:430px;width:100%;margin:0 auto}
.authCard .kicker{margin-bottom:10px}
.authCard h1,.authCard h2{font-size:clamp(28px,3.4vw,40px);margin:0 0 8px;letter-spacing:-.03em}
.authCard .sub{color:var(--muted);font-size:15.5px;margin:0 0 24px}
.formErr{display:none;background:var(--danger-soft);border:1px solid #F6C9C4;color:#B42318;border-radius:12px;padding:12px 14px;font-size:13.5px;margin-bottom:16px}
.formErr.show{display:block}
.rowBetween{display:flex;justify-content:space-between;align-items:center;gap:14px;margin-top:4px;flex-wrap:wrap}
.check{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-2);cursor:pointer}
.check input{width:16px;height:16px;accent-color:var(--cobalt);cursor:pointer}
.authFoot{margin-top:20px;text-align:center;font-size:14px;color:var(--muted)}
.authFoot a{color:var(--cobalt);font-weight:700}
.authAside{max-width:480px;margin:0 auto;width:100%}
.authAside .hint{margin-top:16px;font-size:13px;color:var(--faint);font-family:var(--font-mono);text-align:center}
.linkbtn{background:none;border:0;color:var(--cobalt);font-weight:700;cursor:pointer;font-family:inherit;font-size:13.5px;padding:0}

/* ---- 12. Dashboard (my cloud warehouse) ---- */
.dashHead{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;flex-wrap:wrap;margin-bottom:28px}
.dashHead h1{font-size:clamp(28px,3.6vw,44px);margin:6px 0 0;letter-spacing:-.03em}
.dashHead .sub{color:var(--muted);font-size:16px;margin-top:6px}
.uname{color:var(--cobalt)}
.dashActions{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.banner{display:none;background:var(--amber-soft);border:1px solid #F3DDB3;color:#9A6203;border-radius:14px;padding:14px 16px;font-size:14px;margin-bottom:24px;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.banner.show{display:flex}
.dashGrid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:36px}
.dashStat{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:22px;position:relative;overflow:hidden;transition:transform .2s,box-shadow .2s,border-color .2s}
.dashStat:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);border-color:var(--sky-border)}
.dashStat .ic{width:40px;height:40px;border-radius:11px;background:var(--sky);display:grid;place-items:center;color:var(--cobalt);position:absolute;right:18px;top:18px;font-size:18px}
.dashStat .lab{font-size:13px;color:var(--muted);font-weight:600}
.dashStat .big{font-family:var(--font-display);font-size:32px;font-weight:800;letter-spacing:-.03em;margin-top:12px;line-height:1;font-variant-numeric:tabular-nums}
.dashStat .big small{font-size:15px;color:var(--muted);font-weight:700;margin-left:3px;letter-spacing:0}
.dashStat .sub{font-size:12px;color:var(--faint);margin-top:7px;font-family:var(--font-mono)}
.seg{display:flex;gap:6px;background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:5px;margin-bottom:24px;width:max-content;max-width:100%;flex-wrap:wrap}
.seg button{border:0;background:transparent;padding:10px 18px;border-radius:10px;cursor:pointer;font-weight:700;font-size:14px;color:var(--ink-2);font-family:var(--font-body);transition:all .15s}
.seg button:hover:not(.on){color:var(--cobalt)}
.seg button.on{background:#fff;color:var(--cobalt);box-shadow:var(--shadow-sm)}
.segPanel{display:none}
.segPanel.on{display:block;animation:msgIn .4s ease both}
.shelf{display:flex;flex-wrap:wrap;gap:13px;margin-top:6px}
.shelf .pkgbox{flex:1 1 calc((100% - 52px)/5);min-width:96px;min-height:auto}
.addrCard{border:1px dashed var(--cobalt);background:var(--sky-2);border-radius:16px;padding:24px;max-width:600px}
.addrCard .mono{font-family:var(--font-mono);font-size:15px;line-height:2;color:var(--ink)}
.addrCard .mono b{color:var(--cobalt-ink)}
.setList{list-style:none;padding:0;margin:0;max-width:600px}
.setList li{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:16px 4px;border-bottom:1px solid var(--line-soft);font-size:15px}
.setList li:last-child{border-bottom:0}
.setList .tag{font-size:12px;color:var(--muted);font-family:var(--font-mono)}
.quick{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:36px}
.quick a{display:block;border:1px solid var(--line);border-radius:16px;padding:20px;background:#fff;transition:all .18s}
.quick a:hover{border-color:var(--cobalt);transform:translateY(-3px);box-shadow:var(--shadow-sm)}
.quick .ic{width:44px;height:44px;border-radius:12px;background:var(--sky);display:grid;place-items:center;color:var(--cobalt);margin-bottom:12px;font-size:20px}
.quick b{display:block;font-size:15px;margin-bottom:4px}
.quick small{color:var(--muted);font-size:13px}
@media(max-width:1020px){
  .authWrap{grid-template-columns:1fr;gap:34px;min-height:auto;padding:30px 0 50px}
  .authAside{order:-1;max-width:460px}
  .dashGrid{grid-template-columns:1fr 1fr}
  .quick{grid-template-columns:1fr 1fr}
  .shelf .pkgbox{flex-basis:calc((100% - 26px)/3)}
}
@media(max-width:520px){
  .dashGrid{grid-template-columns:1fr 1fr}
  .quick{grid-template-columns:1fr}
  .seg{width:100%}
  .seg button{flex:1;padding:10px 8px}
}

.skip{position:absolute;left:-9999px;top:0;z-index:200;background:#fff;color:var(--ink);padding:10px 16px;border-radius:0 0 10px 0;font-weight:700}
.skip:focus{left:0}