/* ==========================================================================
   SpineShield · design system  (forked from b2b-site-visual / assets/site.css)
   --------------------------------------------------------------------------
   One difference from the source system: dark base (near-black deep green)
   with a gold accent. Class names, type scale, spacing rhythm, the three
   shadow tiers and the three radii are identical to b2b-site-visual.
   Changes live only in the :root colour variables below.
   ========================================================================== */

:root{
  /* ---- brand: deep teal from the real logo (#0F4C81-ish family) ---- */
  --brand:#0E5C7E;          /* teal-blue: CTA fills, links, icon strokes, heading rules */
  --brand-d:#0A4763;        /* hover, one step darker */
  --brand-l:#E4F0F6;        /* pale tint: tag bg, selected nav, soft blocks */
  --accent:#C9A24D;         /* warm gold, used on <5% of the page */

  /* ---- neutrals (cool blue-grey, never pure grey) ---- */
  --ink:#10222B;            /* body: near-black blue-grey, ~14:1 on #FFFFFF */
  --ink2:#3C5866;           /* secondary body, ~7.5:1 */
  --muted:#6B8391;          /* captions / weak text, ~4.6:1 */
  --line:#DCE6EC;           /* rules and card borders */
  --bg:#FFFFFF;             /* page base */
  --soft:#F4F8FA;           /* alternating section bg */
  --soft2:#E8F1F6;          /* second alternating layer */

  /* ---- status ---- */
  --ok:#12805F;
  --warn:#B45309;
  --err:#C0392B;

  /* ---- shape and shadow (pick from these tiers only) ---- */
  --r:10px;
  --r-lg:18px;
  --r-xl:24px;
  --sh-1:0 1px 2px rgba(16,34,43,.05), 0 1px 3px rgba(16,34,43,.04);
  --sh-2:0 2px 5px rgba(16,34,43,.05), 0 14px 30px rgba(16,34,43,.08);
  --sh-3:0 6px 14px rgba(16,34,43,.07), 0 28px 56px rgba(16,34,43,.11);
  --ring:0 0 0 3px rgba(14,92,126,.18);

  /* ---- typography (identical to b2b-site-visual, do not edit) ---- */
  --max:1140px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  --fs-h1:clamp(2.05rem,4.3vw,3.02rem);
  --fs-h2:clamp(1.44rem,2.6vw,1.96rem);
  --fs-h3:1.07rem;
  --lh-tight:1.13;

  /* ---- light-surface only ---- */
  --on-brand:#FFFFFF;       /* text on brand fill */
  --card:#FFFFFF;           /* card bg */
  --card-h:#FBFDFE;         /* card hover */
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--font);font-size:16.5px;line-height:1.72;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block}
/* 照片统一圆角与描边，避免白色页面里出现生硬矩形 */
figure{margin:0}
figure img{border-radius:var(--r-lg);border:1px solid var(--line);background:var(--soft)}
svg{display:block}
a{color:var(--brand);text-decoration:none;text-underline-offset:3px;text-decoration-thickness:1.5px}
a:hover{text-decoration:underline}
::selection{background:var(--brand-l);color:var(--brand-d)}

/* Headings: the larger the type, the tighter the leading and tracking */
h1,h2,h3,h4{margin:0 0 .5em;letter-spacing:-.018em;color:var(--ink)}
h1{font-size:var(--fs-h1);line-height:var(--lh-tight);font-weight:800;letter-spacing:-.024em}
h2{font-size:var(--fs-h2);line-height:1.2;font-weight:800;margin-top:0}
h3{font-size:var(--fs-h3);line-height:1.35;font-weight:700;letter-spacing:-.012em;margin-top:1.7em}
h2.h-sub{font-size:var(--fs-h3);line-height:1.35;font-weight:700;letter-spacing:-.012em;margin-top:1.7em}
p{margin:0 0 1.05em}
ul,ol{margin:0 0 1.05em;padding-left:1.2em}
li{margin:.34em 0}
small{font-size:.86rem}
strong,b{font-weight:700}
hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}

.wrap{max-width:var(--max);margin:0 auto;padding:0 22px}
.lead{font-size:1.12rem;line-height:1.66;color:var(--ink2);max-width:36em}
.muted{color:var(--muted)}
.center{text-align:center}
.narrow{max-width:780px}
.divider{border:0;border-top:1px solid var(--line);margin:2em 0}

/* ---------- accessibility ---------- */
.skip{position:absolute;left:-9999px;top:0;background:var(--brand);color:var(--on-brand);padding:11px 18px;border-radius:0 0 10px 0;z-index:99}
.skip:focus{left:0;top:0}
:focus-visible{outline:3px solid var(--brand);outline-offset:2px;border-radius:6px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:saturate(160%) blur(10px);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 0 rgba(16,34,43,.02);
}
.header-inner{display:flex;align-items:center;gap:20px;min-height:70px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:1.07rem;color:var(--ink);letter-spacing:-.022em}
.brand:hover{text-decoration:none;color:var(--brand)}
.brand-mark{
  width:32px;height:32px;border-radius:10px;flex:0 0 32px;
  background:var(--brand);color:var(--on-brand);display:grid;place-items:center;
  font-size:.84rem;font-weight:800;letter-spacing:.02em;
  box-shadow:0 2px 6px rgba(0,0,0,.34);
}
.brand small{display:block;font-size:.655rem;font-weight:700;color:var(--muted);letter-spacing:.08em;text-transform:uppercase;line-height:1.5}
.site-nav{margin-left:auto;display:flex;align-items:center;gap:2px;flex-wrap:wrap}
.site-nav a{color:var(--ink2);font-size:.94rem;font-weight:600;padding:9px 12px;border-radius:9px;transition:background .15s ease,color .15s ease}
.site-nav a:hover{background:var(--soft2);color:var(--brand);text-decoration:none}
.site-nav a[aria-current="page"]{color:var(--brand);background:var(--brand-l)}
/* Header CTA: must be .site-nav a.nav-cta to out-specify .site-nav a color,
   otherwise the button label inherits pale grey and disappears on gold. */
.site-nav a.nav-cta{
  color:var(--on-brand);background:var(--brand);border-color:transparent;
  padding:10px 17px;font-size:.87rem;border-radius:999px;
  box-shadow:var(--sh-1);
}
.site-nav a.nav-cta:hover{background:var(--brand-d);color:var(--on-brand)}
.nav-cta{margin-left:10px}
.nav-toggle{display:none}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 22px;border-radius:999px;border:1.5px solid transparent;
  font-size:.95rem;font-weight:700;line-height:1;cursor:pointer;
  transition:transform .15s ease,background .15s ease,border-color .15s ease,box-shadow .15s ease;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--brand);color:var(--on-brand);box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--brand-d);color:var(--on-brand);box-shadow:var(--sh-2)}
.btn-ghost{background:transparent;color:var(--ink);border-color:#C9DAE3;box-shadow:none}
.btn-ghost:hover{border-color:var(--brand);background:var(--brand-l);color:var(--brand)}
.btn-accent{background:var(--accent);color:#101610}
.btn-accent:hover{background:#7E9269;color:#101610}
.btn-sm{padding:10px 16px;font-size:.87rem}
.btn-lg{padding:15px 28px;font-size:1rem}
.btn-block{width:100%}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin:1.5em 0}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:.93rem}
.link-arrow::after{content:"\2192";transition:transform .15s ease}
.link-arrow:hover{text-decoration:none}
.link-arrow:hover::after{transform:translateX(3px)}

/* ---------- sections ---------- */
section{padding:58px 0}
section.tight{padding:36px 0}
.bg-soft{background:var(--soft)}
.bg-soft2{background:var(--soft2)}
.section-head{max-width:780px;margin-bottom:1.9em}
.section-head h2{margin-bottom:.42em}
.section-head p{margin-bottom:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:7px;
  font-size:.735rem;font-weight:800;letter-spacing:.115em;text-transform:uppercase;
  color:var(--brand);background:var(--brand-l);
  padding:6px 13px;border-radius:999px;margin-bottom:1.05em;
  border:1px solid rgba(14,92,126,.22);
}
.eyebrow::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--brand);flex:0 0 5px}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:68px 0 60px;
  background-color:#F4F8FA;
  background-image:
    radial-gradient(880px 420px at 86% -14%, rgba(14,92,126,.10), rgba(14,92,126,0) 62%),
    radial-gradient(600px 340px at 2% 106%, rgba(201,162,77,.08), rgba(201,162,77,0) 60%),
    linear-gradient(180deg,#F7FAFC 0%,#FFFFFF 82%);
}
.hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:52px;align-items:center}
.hero h1{margin-bottom:.42em}
.hero .lead{font-size:1.16rem;max-width:33em}
.hero-trust{display:flex;flex-wrap:wrap;gap:8px;margin-top:1.7em}
.hero-trust span{
  display:inline-flex;align-items:center;gap:7px;
  font-size:.855rem;font-weight:600;color:var(--ink2);
  background:var(--card);border:1px solid var(--line);border-radius:999px;
  padding:6px 13px;box-shadow:var(--sh-1);
}
.tick{color:var(--brand);font-weight:800;font-size:.9em}

/* ---------- image slots (designed components while photos are pending) ---------- */
.ph{
  margin:0;position:relative;overflow:hidden;
  width:100%;max-width:100%;min-width:0;
  border:1px solid #D7E5EC;border-radius:var(--r-lg);
  background-color:#F2F8FB;
  background-image:
    radial-gradient(420px 220px at 78% 6%, rgba(14,92,126,.16), rgba(14,92,126,0) 66%),
    radial-gradient(320px 200px at 12% 100%, rgba(201,162,77,.09), rgba(201,162,77,0) 62%),
    linear-gradient(155deg,#F4F8FA 0%,#EDF4F8 56%,#F1F7F9 100%);
  min-height:230px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:10px;padding:30px 22px;text-align:center;
}
.ph::before{ /* faint dot field instead of a line grid: reads as a frame, not a table */
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(14,92,126,.16) 1px,transparent 1px);
  background-size:22px 22px;
  -webkit-mask-image:radial-gradient(circle at 50% 45%,#000 22%,transparent 78%);
  mask-image:radial-gradient(circle at 50% 45%,#000 22%,transparent 78%);
}
.ph>*{position:relative}
.ph-16x9{aspect-ratio:16/9;min-height:0}
.ph-4x3{aspect-ratio:4/3;min-height:0}
.ph-1x1{aspect-ratio:1/1;min-height:0}
.ph-ico{
  width:48px;height:48px;border-radius:14px;background:var(--soft2);color:var(--brand);
  display:grid;place-items:center;
  box-shadow:0 0 0 5px rgba(14,92,126,.07), var(--sh-2);
}
.ph-ico svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.ph-t{font-size:.96rem;font-weight:800;color:var(--ink);letter-spacing:-.012em;max-width:24em}
.ph-d{font-size:.79rem;color:var(--muted);max-width:27em;line-height:1.6}
.ph-16x9 .ph-ico{width:62px;height:62px;border-radius:18px}
.ph-16x9 .ph-ico svg{width:30px;height:30px}
.ph-16x9 .ph-t{font-size:1.06rem}
.hero .ph-16x9 .ph-ico{width:70px;height:70px;border-radius:20px}
.hero .ph-16x9 .ph-ico svg{width:34px;height:34px}
.ph-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.ph-strip .ph{min-height:150px;border-radius:var(--r);gap:7px;padding:20px 13px}
.ph-strip .ph-ico{width:40px;height:40px;border-radius:12px;box-shadow:0 0 0 4px rgba(14,92,126,.06), var(--sh-1)}
.ph-strip .ph-ico svg{width:20px;height:20px}
.ph-strip .ph-t{font-size:.87rem}
.ph-strip .ph-d{font-size:.72rem}

/* ---------- cards and grid ---------- */
.grid{display:grid;gap:18px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#C6DDE8}
.card h3{margin-top:0}
.card p:last-child{margin-bottom:0}
.card-value{border-top:3px solid var(--brand);position:relative;overflow:hidden}
.card-value .num{
  display:inline-grid;place-items:center;width:32px;height:32px;border-radius:10px;
  background:var(--brand-l);color:var(--brand);
  font-weight:800;font-size:.85rem;letter-spacing:.02em;margin-bottom:.75em;
  border:1px solid rgba(14,92,126,.22);
}

/* ---------- screen-reader only ---------- */
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;
  clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ---------- product cards ---------- */
.product{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;
}
.product:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#C6DDE8}
.product .ph{
  border:0;border-bottom:1px solid var(--line);border-radius:0;
  min-height:172px;gap:7px;padding:22px 15px;
}
.product .ph-ico{width:40px;height:40px;border-radius:12px;box-shadow:0 0 0 4px rgba(14,92,126,.06), var(--sh-1)}
.product .ph-ico svg{width:20px;height:20px}
.product .ph-t{font-size:.89rem}
.product .ph-d{font-size:.735rem}
.product-body{padding:19px;display:flex;flex-direction:column;flex:1}
.product-body h3{margin:0 0 .34em;font-size:1.03rem;letter-spacing:-.014em;line-height:1.4}
.product-body h3 .model{
  display:inline-block;background:var(--soft2);color:var(--brand);
  border-radius:7px;padding:3px 8px;font-size:.775rem;font-weight:800;
  letter-spacing:.04em;margin-right:8px;vertical-align:1.5px;
  border:1px solid rgba(14,92,126,.18);
}
.product-body p{font-size:.925rem;color:var(--ink2);flex:1;margin-bottom:1em}
.product-body .btn{margin-top:auto;align-self:flex-start}

/* ---------- tables ---------- */
.table-scroll{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 0 1.3em;border:1px solid var(--line);border-radius:var(--r);background:var(--card)}
table{width:100%;border-collapse:collapse;font-size:.92rem;background:var(--card);min-width:520px}
caption{
  text-align:left;font-weight:800;color:var(--ink);font-size:1rem;letter-spacing:-.012em;
  padding:13px 15px;background:var(--soft2);border-bottom:1px solid var(--line);
}
th,td{text-align:left;padding:12px 15px;border-bottom:1px solid var(--line);vertical-align:top}
th{
  background:var(--soft2);font-weight:700;color:var(--ink2);
  font-size:.79rem;letter-spacing:.06em;text-transform:uppercase;white-space:nowrap;
}
tbody tr{transition:background .12s ease}
tbody tr:hover{background:var(--card-h)}
tbody tr:last-child th,tbody tr:last-child td{border-bottom:0}
td.model-cell{font-weight:700;white-space:nowrap;color:var(--brand)}
.spec-label{font-weight:700;color:var(--ink2);width:34%;white-space:nowrap}

/* ---------- callouts and tags ---------- */
.callout{
  border:1px solid var(--line);border-left:4px solid var(--brand);
  background:var(--soft);border-radius:var(--r);padding:17px 19px;margin:1.5em 0;
}
.callout p:last-child{margin-bottom:0}
.callout.warn{border-left-color:var(--accent);background:#FBF5E6}
.callout h3{margin-top:0}
.note{font-size:.87rem;color:var(--muted);margin-top:.6em}
.pill-row{display:flex;flex-wrap:wrap;gap:8px;margin:1em 0}
.pill{font-size:.79rem;font-weight:700;color:var(--brand);background:var(--brand-l);border-radius:999px;padding:5px 12px;border:1px solid rgba(14,92,126,.20)}
.pill.neutral{color:var(--ink2);background:var(--soft2);border-color:var(--line)}

/* ---------- lists ---------- */
.feature-list{list-style:none;padding:0;margin:1.3em 0;display:grid;gap:11px}
.feature-list li{position:relative;padding-left:31px;font-size:.95rem;color:var(--ink2);margin:0}
.feature-list li::before{
  content:"";position:absolute;left:0;top:.48em;width:17px;height:17px;border-radius:50%;
  background:var(--brand-l);border:1.5px solid var(--brand);
}
.feature-list li::after{
  content:"";position:absolute;left:5.5px;top:.77em;width:6px;height:3px;
  border-left:2px solid var(--brand);border-bottom:2px solid var(--brand);
  transform:rotate(-45deg);
}
.steps{counter-reset:s;list-style:none;padding:0;margin:1.3em 0;display:grid;gap:12px}
.steps li{
  counter-increment:s;position:relative;padding:15px 17px 15px 58px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);margin:0;
  font-size:.95rem;color:var(--ink2);
}
.steps li::before{
  content:counter(s);position:absolute;left:17px;top:50%;transform:translateY(-50%);
  width:27px;height:27px;border-radius:50%;background:var(--brand);color:var(--on-brand);
  font-size:.82rem;font-weight:800;display:grid;place-items:center;
}
.steps li strong{color:var(--ink);display:block;font-size:1rem;letter-spacing:-.012em;margin-bottom:2px}

/* ---------- split two-column ---------- */
.split{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:1.5em}
.split .card h3{margin-top:0}
.split .card{border-top:3px solid var(--brand)}
.split .card.us{border-top-color:var(--accent)}

/* ---------- forms ---------- */
.form-wrap{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--sh-2)}
.field{margin-bottom:17px}
.field label{display:block;font-size:.9rem;font-weight:700;margin-bottom:7px;color:var(--ink)}
.field .req{color:var(--err)}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border:1.5px solid var(--line);border-radius:var(--r);
  font-family:inherit;font-size:.96rem;color:var(--ink);background:#FFFFFF;
  transition:border-color .15s ease,box-shadow .15s ease;
}
.field input::placeholder,.field textarea::placeholder{color:var(--muted)}
.field select{color:var(--ink)}
.field input:hover,.field select:hover,.field textarea:hover{border-color:#B9D2DE}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand);outline:0;box-shadow:var(--ring);
}
.field .hint{display:block;font-size:.79rem;color:var(--muted);margin-top:6px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:17px}
.form-note{font-size:.82rem;color:var(--muted);margin-top:13px}
.form-status{margin-bottom:17px;padding:14px 16px;border-radius:var(--r);font-size:.92rem;display:none}
.form-status.is-error{display:block;background:#FDEDEA;border:1px solid #F3C6BE;color:#8E2E20}
.form-status.is-ok{display:block;background:#EAF7F1;border:1px solid #BFE3D4;color:#14614A}
.hp-field{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
button[disabled]{opacity:.6;cursor:progress}

/* ---------- floating contact ---------- */
.floatbar{position:fixed;right:20px;bottom:20px;z-index:60;display:flex;flex-direction:column;gap:10px}
.floatbar a{
  display:inline-flex;align-items:center;gap:9px;background:var(--brand);color:var(--on-brand);
  padding:13px 18px;border-radius:999px;font-size:.9rem;font-weight:700;
  box-shadow:0 10px 26px rgba(0,0,0,.44);
  transition:transform .15s ease,background .15s ease,box-shadow .15s ease;
}
.floatbar a:hover{text-decoration:none;background:var(--brand-d);transform:translateY(-2px);box-shadow:0 14px 32px rgba(0,0,0,.50);color:var(--on-brand)}
.floatbar a.wa{background:#25D366;color:#fff;box-shadow:0 10px 26px rgba(37,211,102,.28)}
.floatbar a.wa:hover{background:#1EB455;color:#fff;box-shadow:0 14px 32px rgba(37,211,102,.32)}
.floatbar svg{width:17px;height:17px;flex:0 0 17px}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  background-color:#F1F6F9;
  background-image:linear-gradient(180deg,#F7FAFC 0%,#EDF4F8 100%);
  border-top:1px solid var(--line);
  color:var(--ink2);padding:52px 0 32px;margin-top:60px;font-size:.9rem;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,var(--brand) 0%,#3E8CA8 55%,var(--accent) 100%);
}
.site-footer h4,.site-footer h3,.site-footer h2{margin:0 0 .75em;color:var(--ink);font-size:.95rem;letter-spacing:.01em;font-weight:700}
.site-footer a{color:var(--brand)}
.site-footer a:hover{color:var(--brand)}
.footer-grid{display:grid;grid-template-columns:1.45fr 1fr 1fr;gap:34px}
.footer-grid p{color:var(--ink2);margin-bottom:.6em}
.footer-links{list-style:none;padding:0;margin:0}
.footer-links li{margin:.38em 0}
.footer-bottom{
  border-top:1px solid var(--line);margin-top:32px;padding-top:19px;
  display:flex;flex-wrap:wrap;gap:10px 22px;justify-content:space-between;color:var(--muted);font-size:.83rem;
}
.reply-badge{
  display:inline-flex;align-items:center;gap:8px;background:#fff;
  border:1px solid var(--line);border-radius:999px;padding:8px 14px;
  font-size:.83rem;color:var(--ink2);font-weight:600;margin-top:.45em;
}
.reply-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--ok);flex:0 0 7px;box-shadow:0 0 0 3px rgba(95,190,146,.18)}

/* ---------- other page blocks ---------- */
.page-hero{padding:48px 0 14px;background:var(--soft)}
.crumb{font-size:.82rem;color:var(--muted);margin-bottom:.9em}
.crumb a{color:var(--muted)}
.thanks{max-width:640px;margin:0 auto;text-align:center;padding:64px 0}
.thanks .big{
  width:66px;height:66px;border-radius:50%;background:#E6F5EE;color:var(--ok);
  display:grid;place-items:center;margin:0 auto 20px;font-size:1.75rem;font-weight:800;
  box-shadow:0 0 0 8px rgba(95,190,146,.08);
}
.err-page{max-width:600px;margin:0 auto;text-align:center;padding:74px 0}
.err-page .code{font-size:3.6rem;font-weight:800;color:var(--brand);line-height:1;margin-bottom:.2em;letter-spacing:-.04em}

/* ---------- responsive ---------- */
@media (max-width:960px){
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:34px}
  .hero{padding:52px 0 46px}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px}
  .ph-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:720px){
  body{font-size:15.5px}
  section{padding:40px 0}
  .wrap{padding:0 18px}
  h1{letter-spacing:-.02em}
  .site-nav{
    display:none;position:absolute;left:0;right:0;top:100%;background:#fff;
    border-bottom:1px solid var(--line);padding:14px 20px 20px;flex-direction:column;align-items:stretch;
    box-shadow:var(--sh-3);gap:2px;
  }
  .site-nav.is-open{display:flex}
  .site-nav a{padding:13px 14px;font-size:1rem;border-radius:10px}
  .nav-cta{margin:10px 0 0;justify-content:center}
  .nav-toggle{
    display:inline-flex;margin-left:auto;align-items:center;gap:8px;background:#fff;
    border:1.5px solid var(--line);border-radius:10px;padding:10px 14px;font-weight:700;
    font-size:.88rem;color:var(--ink);cursor:pointer;box-shadow:var(--sh-1);box-shadow:var(--sh-1);
  }
  .grid-2,.grid-3,.grid-4,.split,.field-row{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:24px}
  .floatbar{right:12px;bottom:12px;left:12px}
  .floatbar a{justify-content:center;width:100%}
  body{padding-bottom:76px}
  .ph-strip{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:10px}
  table{min-width:440px;font-size:.88rem}
  th,td{padding:11px 13px}
  .form-wrap{padding:22px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* ---------- 真 logo（2026-10-20） ---------- */
img.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:10px;
  background:#fff;padding:3px;object-fit:contain;
  box-shadow:var(--sh-1);
}

/* ---------- product card without a photo (spec plate) ---------- */
.product .card-plate{
  aspect-ratio:4/5;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:10px;padding:26px 20px;text-align:center;
  background:linear-gradient(180deg,var(--soft2),var(--soft));
  border-bottom:1px solid var(--line);
}
.product .card-plate .code{
  font-size:1.42rem;font-weight:800;letter-spacing:.07em;color:var(--brand);
}
.product .card-plate .plate-note{
  font-size:.7rem;font-weight:700;color:var(--ink2);max-width:15em;line-height:1.6;
  text-transform:uppercase;letter-spacing:.08em;
}
.product .card-plate svg{
  width:44px;height:44px;fill:none;stroke:var(--brand);stroke-width:1.4;
  stroke-linecap:round;stroke-linejoin:round;opacity:.8;
}

/* ---------- hero fact strip ---------- */
.hero-facts{
  display:flex;flex-wrap:wrap;gap:8px 10px;margin:1.1em 0 1.4em;
}
.hero-facts span{
  display:inline-flex;align-items:center;
  font-size:.82rem;font-weight:700;color:var(--brand);
  background:var(--brand-l);border:1px solid rgba(14,92,126,.16);
  border-radius:999px;padding:6px 13px;line-height:1;
}

/* ---------- hero fact strip ---------- */
.hero-facts{
  display:flex;flex-wrap:wrap;gap:8px 10px;margin:1.1em 0 1.4em;
}
.hero-facts span{
  display:inline-flex;align-items:center;
  font-size:.82rem;font-weight:700;color:var(--brand);
  background:var(--brand-l);border:1px solid rgba(14,92,126,.16);
  border-radius:999px;padding:6px 13px;line-height:1;
}

/* 悬浮按钮在页脚区域自动让位，避免遮住版权与合规声明 */
.floatbar{transition:opacity .22s ease,transform .22s ease}
.floatbar.is-off{opacity:0;transform:translateY(14px);pointer-events:none}
@media (prefers-reduced-motion:reduce){.floatbar{transition:none}}