/* interactivedisplaysupplier.com — tokens 对应 DESIGN.md §1。单强调色 #0057B8，半径 6px，light only。*/
:root{
  --ink:#111318; --ink-2:#3B4252; --paper:#FBFAF8; --surface:#fff; --band:#101625;
  --line:#DFDCD6; --line-2:#EDEAE5; --accent:#0057B8; --accent-ink:#fff; --accent-soft:#E8F0FB;
  --r:6px; --maxw:1280px; --gut:24px; --ease:cubic-bezier(.16,1,.3,1);
  --f-display:"Archivo",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-mono:"Roboto Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--f-display);font-size:16px;line-height:1.6;font-weight:400;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
h1,h2,h3,h4{font-weight:700;line-height:1.15;letter-spacing:-.02em;margin:0 0 .5em}
h1{font-size:clamp(2rem,1.3rem + 2.6vw,3.1rem)}
h2{font-size:clamp(1.5rem,1.15rem + 1.3vw,2.1rem)}
h3{font-size:clamp(1.1rem,1rem + .5vw,1.35rem)}
p{margin:0 0 1em;max-width:70ch}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--gut)}
.skip{position:absolute;left:-9999px;top:0;background:var(--accent);color:#fff;padding:.6rem 1rem;z-index:99}
.skip:focus{left:0}
/* header */
.hd{position:sticky;top:0;z-index:40;background:rgba(251,250,248,.93);backdrop-filter:saturate(180%) blur(8px);border-bottom:1px solid var(--line)}
.hd__in{display:flex;align-items:center;gap:20px;height:68px;max-width:var(--maxw);margin:0 auto;padding:0 var(--gut)}
.brand{display:flex;align-items:baseline;gap:8px;color:var(--ink);font-weight:700;letter-spacing:-.02em;font-size:1.05rem}
.brand:hover{text-decoration:none}
.brand small{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.12em;color:var(--ink-2);text-transform:uppercase;font-weight:500}
.nav{display:flex;gap:2px;margin-left:auto;align-items:center}
.nav a,.nav button{font:inherit;font-size:.9rem;font-weight:500;color:var(--ink);background:none;border:0;padding:.55rem .7rem;border-radius:var(--r);cursor:pointer;display:inline-flex;align-items:center;gap:5px}
.nav a:hover,.nav button:hover{background:var(--line-2);text-decoration:none}
.nav__grp{position:relative}
.nav__menu{position:absolute;top:calc(100% + 6px);left:0;min-width:270px;background:var(--surface);border-radius:var(--r);box-shadow:0 18px 44px rgba(16,22,37,.16);padding:8px;display:none}
.nav__grp.is-open .nav__menu{display:block}
.nav__menu a{display:block;padding:.5rem .6rem;font-size:.88rem;font-weight:400}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:.7rem 1.15rem;border-radius:var(--r);font-weight:600;font-size:.92rem;border:1px solid transparent;cursor:pointer;transition:background .18s var(--ease),transform .12s var(--ease),border-color .18s var(--ease);white-space:nowrap}
.btn--pri{background:var(--accent);color:var(--accent-ink)}
.btn--pri:hover{background:#00459a;text-decoration:none}
.btn--ghost{border-color:var(--line);color:var(--ink);background:var(--surface)}
.btn--ghost:hover{border-color:var(--ink-2);text-decoration:none}
.btn:active{transform:translateY(1px) scale(.99)}
.nav__toggle{display:none}
/* layout */
main{display:block}
section{padding:clamp(48px,6vw,84px) 0}
.sec-head{max-width:66ch;margin-bottom:34px}
.sec-head p{color:var(--ink-2)}
.eyebrow{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);font-weight:500;margin:0 0 .6rem}
.crumbs{font-size:.8rem;color:var(--ink-2);padding:14px 0 0}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:0}
.crumbs li::after{content:"/";margin-left:6px;color:var(--line)}
.crumbs li:last-child::after{content:""}
/* hero: catalog 骨架 = 品类网格，不是大标语 */
.hero{padding-top:clamp(28px,3.4vw,46px);padding-bottom:clamp(34px,4vw,56px)}
.hero__grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:clamp(24px,4vw,56px);align-items:end}
.hero h1{margin-bottom:.35em;font-size:clamp(1.85rem,1.05rem + 1.7vw,2.5rem);max-width:24ch}
.hero__lede{font-size:clamp(1rem,.95rem + .35vw,1.18rem);color:var(--ink-2);max-width:52ch}
.hero__find{margin-top:26px;display:flex;gap:10px;flex-wrap:wrap}
.hero__find input{flex:1 1 260px;min-width:0;padding:.75rem .9rem;border:1px solid var(--line);border-radius:var(--r);font:inherit;font-size:.95rem;background:var(--surface);color:var(--ink)}
.hero__find input::placeholder{color:#6B7280}
.lines-h{margin:clamp(34px,4vw,54px) 0 14px;font-size:1.05rem;letter-spacing:0;color:var(--ink-2);font-weight:600}
.lines{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px}
.line-card{position:relative;display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;color:var(--ink);transition:border-color .2s var(--ease),transform .2s var(--ease)}
.line-card:hover{border-color:var(--accent);text-decoration:none;transform:translateY(-2px)}
.line-card img{aspect-ratio:4/3;object-fit:contain;background:#fff;padding:12px}
.line-card__b{padding:14px 16px 18px;border-top:1px solid var(--line-2)}
.line-card h3{font-size:1rem;margin-bottom:.25em}
.line-card p{font-size:.82rem;color:var(--ink-2);margin:0;font-family:var(--f-mono)}
/* 签名动作：全型号索引表 */
.idx__tools{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px;align-items:center}
.idx__tools select,.idx__tools input{padding:.55rem .7rem;border:1px solid var(--line);border-radius:var(--r);font:inherit;font-size:.88rem;background:var(--surface);color:var(--ink);min-height:44px}
.idx__count{font-family:var(--f-mono);font-size:.8rem;color:var(--ink-2);margin-left:auto}
.tbl-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
table{border-collapse:collapse;width:100%;font-size:.9rem}
thead th{position:sticky;top:68px;background:var(--surface);text-align:left;font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2);font-family:var(--f-mono);font-weight:500;padding:12px 14px;border-bottom:1px solid var(--line);z-index:2}
tbody td{padding:12px 14px;vertical-align:top}
tbody tr:nth-child(even){background:#F6F4F0}
tbody td:first-child{font-weight:600}
td .mono,.mono{font-family:var(--f-mono);font-size:.85em}
.spec-tbl td:first-child{width:34%;color:var(--ink-2);font-weight:500}
.empty{padding:26px;text-align:center;color:var(--ink-2)}
/* grids */
.cols{display:grid;gap:clamp(18px,2.4vw,30px)}
.cols--2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.cols--3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.cols--4{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.cols>*{min-width:0}
.var-item{border-top:2px solid var(--ink);padding-top:14px}
.var-item h3{font-size:.98rem}
.var-item p{font-size:.9rem;color:var(--ink-2);margin:0}
.note{background:var(--accent-soft);border-radius:var(--r);padding:20px 22px;font-size:.92rem;max-width:80ch}
.note p:last-child{margin:0}
/* product */
.prod{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(24px,4vw,52px);align-items:start;padding-top:26px}
.prod__img{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px}
.prod__img img{aspect-ratio:1/1;object-fit:contain}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 20px;padding:0;list-style:none}
.chips li{font-family:var(--f-mono);font-size:.76rem;border:1px solid var(--line);border-radius:100px;padding:.28rem .7rem;color:var(--ink-2)}
.feat{list-style:none;padding:0;margin:0 0 24px}
.feat li{position:relative;padding-left:20px;margin-bottom:.5rem;font-size:.93rem}
.feat li::before{content:"";position:absolute;left:0;top:.62em;width:8px;height:2px;background:var(--accent)}
/* band */
.band{background:var(--band);color:#E7EAF0;padding:clamp(48px,6vw,84px) 0}
.band h2,.band h3{color:#fff}
.band p{color:#C3CAD6}
.band .eyebrow{color:#7FB0FF}
.stat{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:26px}
.stat dt{font-family:var(--f-mono);font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2);margin-bottom:.4rem}
.stat dd{margin:0;font-size:1.08rem;font-weight:600;color:var(--ink)}
.band .stat dt{color:#B6C0CF}
.band .stat dd{color:#fff}
/* faq */
.faq{max-width:78ch}
.faq details{border-top:1px solid var(--line);padding:16px 0}
.faq summary{cursor:pointer;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--f-mono);color:var(--accent);font-size:1.2rem;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq p{margin:.8rem 0 0;color:var(--ink-2);font-size:.94rem}
/* gallery */
.gal{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
.gal img{border-radius:var(--r);aspect-ratio:4/3;object-fit:cover}
/* form */
.form{display:grid;gap:16px;max-width:560px}
.field label{display:block;font-size:.84rem;font-weight:600;margin-bottom:.35rem}
.field input,.field textarea,.field select{width:100%;padding:.7rem .85rem;border:1px solid var(--line);border-radius:var(--r);font:inherit;font-size:.95rem;background:var(--surface);color:var(--ink)}
.field textarea{min-height:130px;resize:vertical}
.field .hint{font-size:.78rem;color:var(--ink-2);margin-top:.3rem}
.field .err{font-size:.8rem;color:#B3261E;margin-top:.3rem;display:none}
.field.is-err input,.field.is-err textarea{border-color:#B3261E}
.field.is-err .err{display:block}
.hp{position:absolute;left:-9999px}
.form__ok{background:var(--accent-soft);color:var(--ink);border-radius:var(--r);padding:18px 20px;font-size:.92rem;display:none}
/* cards */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px;display:flex;flex-direction:column;gap:6px}
.card h3{font-size:1rem;margin:0}
.card p{font-size:.9rem;color:var(--ink-2);margin:0}
.card--link:hover{border-color:var(--accent)}
.post-list{display:grid;gap:2px}
.post{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px;align-items:baseline;padding:18px 0;border-bottom:1px solid var(--line)}
.post h3{margin:0 0 .3em;font-size:1.05rem}
.post p{margin:0;font-size:.9rem;color:var(--ink-2)}
.post time{font-family:var(--f-mono);font-size:.78rem;color:var(--ink-2)}
/* article */
.article{max-width:74ch}
.article h2{margin-top:1.8em}
.article h3{margin-top:1.4em}
.article ul,.article ol{padding-left:1.2em}
.article li{margin-bottom:.4em}
.article>*{min-width:0}
.article table{margin:1.4em 0;border:1px solid var(--line);border-radius:var(--r);display:block;max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}
.article table thead th{position:static}
.article table th,.article table td{padding:10px 12px;text-align:left;vertical-align:top;font-size:.9rem}
.article table tbody tr:nth-child(even){background:#F6F4F0}
.article figure{margin:0 0 1.6em}
.article figcaption{font-size:.82rem;color:var(--ink-2);margin-top:.5rem}
/* footer */
.ft{background:var(--band);color:#C3CAD6;padding:56px 0 28px;font-size:.95rem}
.ft a{color:#DCE3EE}
.ft h3{color:#fff;font-size:.82rem;font-family:var(--f-mono);letter-spacing:.12em;text-transform:uppercase;margin:0 0 .9rem;font-weight:500}
.ft__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:30px}
.ft ul{list-style:none;padding:0;margin:0}
.ft li{margin-bottom:.45rem}
.ft__legal{margin-top:38px;font-size:.82rem;color:#AEB8C6;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between}
/* reveal */
.rv{opacity:0;transform:translateY(14px)}
html:not(.js) .rv{opacity:1;transform:none}
.rv.is-visible{opacity:1;transform:none;transition:opacity .55s var(--ease),transform .55s var(--ease)}
@media (prefers-reduced-motion:reduce){.rv,.rv.is-visible{opacity:1!important;transform:none!important;transition:none!important}}
@media (max-width:1024px){
  .hero__grid,.prod{grid-template-columns:1fr}
  thead th{top:60px}
}
@media (max-width:520px){
  .brand{font-size:.95rem;white-space:nowrap}
  .brand small{display:none}
}
@media (max-width:880px){
  .hd__in{height:60px}
  .nav{position:fixed;inset:60px 0 auto;background:var(--surface);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;gap:0;padding:8px;display:none;max-height:calc(100dvh - 60px);overflow:auto}
  .nav.is-open{display:flex}
  .nav__toggle{display:inline-flex;margin-left:auto}
  .nav__grp{position:static}
  .nav__menu{position:static;display:none;box-shadow:none;padding:0 0 6px 12px;min-width:0}
  .nav__grp.is-open .nav__menu{display:block}
  .nav .btn--pri{margin:8px 0 4px}
  thead th{position:static}
}