/* ============================================================
   TEIREA 田尼 · 设计系统 V2
   版式原则：中文用系统无衬线主导（不依赖网络字体，杜绝宋体回退），
   拉丁与数字用 Space Grotesk 点缀技术感（等宽体已在 V22 退出，见「字体收敛」段）。
   色板：白底 + 安全橙。对比度逐对校验 WCAG AA：
   正文 #191A1C on #FFFFFF = 16.1:1 · 深橙文字 #C2410C on #FFFFFF = 5.18:1
   CTA 墨字 #191A1C on #F26A1B = 5.2:1（安全橙上禁用白字，白字仅 3.06:1 不达标）
   设备炭 #101418 上 #F7F6F3 = 16.5:1
   ============================================================ */

:root{
  --paper:#F7F6F3; --card:#FFFFFF; --paper-2:#F1F0EC; --paper-3:#E9E7E3;
  --ink:#191A1C; --ink-soft:#33383E; --steel:#565C64; --steel-dim:#61676F;
  --brand:#F26A1B; --brand-ink:#C2410C; --device:#101418; --device-2:#171C22;
  --device-line:rgba(255,255,255,.13); --brand-glow:#FB7A2E;
  --ok:#0A7A52; --warn:#8F5E06; --bad:#C42A4A; --info:#1D4ED8;
  --line:rgba(25,26,28,.10); --line-2:rgba(25,26,28,.16); --line-strong:rgba(25,26,28,.24);

  /* 中文字体栈：macOS → 鸿蒙/思源 → Windows 雅黑，绝不落到 generic serif */
  --sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei UI","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --latin:"Space Grotesk","Helvetica Neue",Helvetica,Arial,var(--sans);
  /* 字体收敛（V22）：--mono 不再指向等宽体。全站只留两个拉丁/中文角色，
     等宽 JetBrains Mono 从字体请求里移除，型号与数字改用 Space Grotesk 的表格数字。 */
  --mono:"Space Grotesk","Helvetica Neue",Helvetica,Arial,var(--sans);

  --maxw:1280px; --nav-h:80px;
  --r-s:6px; --r-m:12px; --r-l:18px; --r-xl:24px;
  --sp-1:6px; --sp-2:10px; --sp-3:16px; --sp-4:24px; --sp-5:40px; --sp-6:64px; --sp-7:96px; --sp-8:140px;
  --shadow-s:0 1px 2px rgba(16,20,24,.04), 0 2px 10px rgba(16,20,24,.04);
  --shadow-m:0 26px 60px -30px rgba(16,20,24,.20);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);
  font-size:16px;line-height:1.75;letter-spacing:.004em;-webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility;overflow-x:hidden}
img{max-width:100%;display:block;height:auto}
svg{display:block;max-width:100%;height:auto}
.hero-visual svg,.panel-dark svg,.split svg,.tech-vis svg{width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
::selection{background:var(--brand);color:var(--ink)}
:focus-visible{outline:2px solid var(--brand-ink);outline-offset:3px;border-radius:3px}

/* ── 排版 ─────────────────────────────────────────── */
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;text-wrap:balance;word-break:keep-all;overflow-wrap:break-word}
.lede,p{word-break:normal;overflow-wrap:break-word}
h1{font-size:clamp(2.1rem,1.2rem + 3.6vw,3.9rem);line-height:1.1;font-weight:800}
h2,.h2{font-size:clamp(1.55rem,1.15rem + 1.5vw,2.35rem);line-height:1.24;font-weight:750}
h3,.h3{font-size:clamp(1.16rem,1.06rem + .4vw,1.4rem);line-height:1.42}
h4,.h4{font-size:1rem;line-height:1.5;letter-spacing:-.01em}
p{margin:0 0 var(--sp-3)}
.lede{font-size:clamp(1rem,.95rem + .3vw,1.16rem);line-height:1.8;color:var(--ink-soft);max-width:58ch;letter-spacing:.006em}
.small{font-size:.9rem}.tiny{font-size:.77rem;line-height:1.7;letter-spacing:.01em}
.muted{color:var(--steel)}
.latin{font-family:var(--latin)}
.mono{font-family:var(--mono)}
.num{font-family:var(--latin);font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:-.03em}
.eyebrow{display:inline-flex;align-items:center;gap:11px;font-family:var(--mono);font-size:.66rem;
  letter-spacing:.13em;text-transform:uppercase;color:var(--brand-ink);margin:0 0 var(--sp-4);font-weight:500}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand);flex:none}
.eyebrow.plain::before{display:none}
.eyebrow.cn{letter-spacing:.06em;text-transform:none;font-family:var(--sans);font-size:.74rem}
.eyebrow.dark{color:var(--brand-glow)}

/* ── 布局 ─────────────────────────────────────────── */
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 clamp(20px,4.5vw,44px)}
.section{padding:clamp(44px,5.4vw,84px) 0}
.section.tight{padding:clamp(38px,5vw,72px) 0}
.section-lead{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:clamp(24px,4vw,64px);align-items:end;margin-bottom:clamp(34px,4.5vw,64px)}
.section-lead .h2{max-width:22ch}
.section-lead p{margin:0}
.grid{display:grid;gap:clamp(14px,1.6vw,20px)}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.divider{height:1px;background:var(--line);border:0;margin:clamp(38px,5vw,72px) 0}

/* ── 导航 ─────────────────────────────────────────── */
.nav{position:fixed;top:0;left:0;right:0;z-index:80;height:var(--nav-h);
  background:rgba(255,255,255,.92);backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);transition:box-shadow .3s var(--ease)}
.nav.scrolled{box-shadow:0 1px 0 var(--line),0 10px 30px -22px rgba(16,20,24,.4)}
.nav .wrap{height:100%;display:flex;align-items:center;gap:clamp(14px,2.4vw,34px);max-width:1420px}
.brand{display:flex;align-items:center;gap:11px;flex:none;line-height:1;color:var(--ink)}
.brand-mark{display:block;width:34px;height:34px;flex:none;color:var(--ink);transition:color .25s var(--ease)}
.brand-txt{display:flex;flex-direction:column;gap:5px}
.brand-cn{font-family:var(--sans);font-weight:700;font-size:1.16rem;letter-spacing:.17em;margin-right:-.17em;color:var(--ink);line-height:1;transition:color .2s}
.brand-word{font-family:var(--latin);font-weight:500;font-size:.62rem;letter-spacing:.36em;margin-right:-.36em;color:var(--brand-ink);line-height:1}
.brand:hover .brand-cn{color:var(--brand-ink)}
.brand:hover .brand-mark{color:var(--brand)}
.nav-tel{flex:none;display:flex;flex-direction:column;justify-content:center;line-height:1.15;padding-left:18px;border-left:1px solid var(--line);font-family:var(--latin);font-weight:700;font-size:1rem;letter-spacing:-.025em;color:var(--ink);transition:color .2s}
.nav-tel i{font-style:normal;font-family:var(--sans);font-size:.66rem;font-weight:500;letter-spacing:.02em;color:var(--steel-dim);margin-bottom:4px;white-space:nowrap}
.nav-tel:hover{color:var(--brand-ink)}
.foot-tel{display:flex;flex-direction:column;gap:3px;margin:18px 0 6px}
.foot-tel a{font-family:var(--latin);font-weight:700;font-size:1.34rem;letter-spacing:-.04em;color:var(--brand-ink)}
.foot-tel a:hover{color:var(--brand)}
.foot-tel span{font-size:.76rem;color:var(--steel-dim)}
.nav-links{display:flex;align-items:center;gap:clamp(12px,1.7vw,26px);margin-left:auto}
.nav-links a{position:relative;font-size:.9rem;font-weight:500;color:var(--ink-soft);padding:9px 0;white-space:nowrap;transition:color .2s}
.nav-links a:hover{color:var(--brand-ink)}
.nav-links a.active{color:var(--ink);font-weight:600}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;background:var(--brand);border-radius:2px}
.nav-cta{flex:none;display:inline-flex;align-items:center;height:44px;padding:0 21px;border-radius:99px;
  background:var(--brand);color:var(--ink);font-weight:600;font-size:.86rem;letter-spacing:-.01em;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease)}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 10px 22px -12px rgba(242,106,27,.9)}
.burger{display:none;width:44px;height:44px;border:1px solid var(--line-2);border-radius:10px;background:var(--card);cursor:pointer;padding:0;position:relative;flex:none;margin-left:auto}
.burger span{position:absolute;left:13px;right:13px;height:1.5px;background:var(--ink);transition:transform .25s var(--ease),opacity .2s}
.burger span:nth-child(1){top:15px}.burger span:nth-child(2){top:21px}.burger span:nth-child(3){top:27px}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.progress{position:fixed;top:0;left:0;height:2px;background:var(--brand);z-index:90;width:0;transition:width .1s linear}

.drawer{position:fixed;inset:0;z-index:79;background:var(--paper);transform:translateY(-100%);
  transition:transform .4s var(--ease);padding:calc(var(--nav-h) + 22px) 0 44px;overflow-y:auto;display:flex;flex-direction:column}
.drawer.open{transform:translateY(0)}
.drawer .wrap{display:flex;flex-direction:column;gap:2px;padding:0 20px}
.drawer a{display:flex;align-items:center;justify-content:space-between;min-height:54px;font-size:1.02rem;font-weight:600;letter-spacing:-.01em;border-bottom:1px solid var(--line);color:var(--ink)}
.drawer a:last-of-type{border-bottom:0}
.drawer a span{font-family:var(--mono);font-size:.62rem;color:var(--steel-dim);letter-spacing:.14em;opacity:.6}
.drawer .d-cta{margin-top:26px;display:grid;gap:10px}
.drawer .d-meta{margin-top:20px;padding-top:18px;font-size:.8rem;color:var(--steel);line-height:1.9}

/* ── 按钮 ─────────────────────────────────────────── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:50px;padding:0 27px;
  border-radius:99px;font-weight:600;font-size:.9rem;letter-spacing:-.005em;border:1px solid transparent;
  cursor:pointer;transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s,border-color .2s;text-align:center}
.btn-primary{background:var(--brand);color:var(--ink)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 28px -16px rgba(242,106,27,.95)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-strong)}
.btn-ghost:hover{border-color:var(--ink);background:var(--card)}
.btn-dark{background:var(--device);color:#F7F6F3}
.btn-dark:hover{background:var(--device-2);transform:translateY(-2px)}
.btn-sm{min-height:42px;padding:0 19px;font-size:.83rem}
.btns{display:flex;gap:11px;flex-wrap:wrap}
.mt-s{margin-top:var(--sp-3)}.mt-m{margin-top:var(--sp-5)}.mt-l{margin-top:var(--sp-7)}
.mb-s{margin-bottom:var(--sp-3)}.mb-m{margin-bottom:var(--sp-5)}
.center{text-align:center}

/* ── 卡片 ─────────────────────────────────────────── */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);padding:clamp(22px,2.5vw,32px);position:relative;transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .3s}
.card.hover:hover{transform:translateY(-3px);box-shadow:var(--shadow-m);border-color:var(--line-2)}
.card.flat{background:var(--paper-2);border-color:transparent}
.card h4{margin-bottom:9px}
.card p{margin:0;color:var(--steel);font-size:.9rem;line-height:1.8}
.card .idx{font-family:var(--sans);font-size:.8rem;letter-spacing:.02em;color:var(--brand-ink);display:block;margin-bottom:14px;font-weight:600;padding-right:26px}

.card-link{display:flex;flex-direction:column;gap:11px;height:100%}
.card-link::after{content:"→";position:absolute;right:clamp(22px,2.5vw,32px);top:clamp(22px,2.5vw,32px);font-family:var(--latin);color:var(--brand-ink);font-size:1.05rem;line-height:1;background:var(--card);padding:2px;transition:transform .25s var(--ease)}
.card-link:hover::after{transform:translateX(4px)}

/* ── 标签 ─────────────────────────────────────────── */
.chip{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:99px;
  font-size:.74rem;font-weight:500;background:var(--paper-2);color:var(--steel);white-space:nowrap;letter-spacing:.01em}
.chip-brand{background:rgba(242,106,27,.13);color:var(--brand-ink);font-weight:600}
.chip-ok{background:rgba(10,122,82,.11);color:var(--ok)}
.chip-warn{background:rgba(143,94,6,.12);color:var(--warn)}
.chip-bad{background:rgba(196,42,74,.11);color:var(--bad)}
.chip-info{background:rgba(29,78,216,.1);color:var(--info)}
.chip-dark{background:rgba(255,255,255,.08);color:#FB7A2E;border:1px solid var(--device-line)}
.tag-row{display:flex;gap:8px;flex-wrap:wrap}
.tag-row.tight{gap:6px}

/* ── 首屏 ─────────────────────────────────────────── */
/* 首屏：暗调全幅摄影底 + 白字（高级感来自影像层，不是白底文档） */
.hero{position:relative;isolation:isolate;color:#F7F6F3;overflow:hidden;background:#0B0F13;
  padding:calc(var(--nav-h) + clamp(64px,9vw,132px)) 0 0}
.hero-media{position:absolute;inset:0;z-index:-2}
.hero-media img{width:100%;height:100%;object-fit:cover;filter:saturate(.9) contrast(1.02) brightness(.78)}
.hero::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:linear-gradient(96deg,rgba(11,15,19,.985) 0%,rgba(11,15,19,.93) 42%,rgba(11,15,19,.62) 72%,rgba(11,15,19,.34) 100%),
             linear-gradient(0deg,rgba(11,15,19,.96) 2%,rgba(11,15,19,.2) 46%,transparent 70%)}
.hero::after{display:none}
.hero .wrap{position:relative;z-index:1}
.hero-grid{display:block;gap:0}
.hero h1{color:#fff;max-width:20ch;margin-bottom:var(--sp-4)}
.hero h1 b{color:var(--brand-glow);font-weight:800}
.hero .eyebrow{color:var(--brand-glow)}
.hero .lede{color:rgba(247,246,243,.76);max-width:52ch;margin-bottom:var(--sp-5)}
.hero-chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:var(--sp-6)}
.hero-chips .chip{background:rgba(255,255,255,.08);color:rgba(247,246,243,.82);border:1px solid var(--device-line)}
.hero-chips .chip-brand{background:rgba(242,106,27,.18);color:#FFC49A;border-color:rgba(251,122,46,.36);font-weight:600}
.hero .btn-ghost{color:#fff;border-color:rgba(255,255,255,.28);background:transparent}
.hero .btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.07)}
/* 首屏底部信息条：净化方式 / 设备形态 / 主体材质 / 适用点位 */
.hero-meta{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--device-line);
  border-top:1px solid var(--device-line);margin-top:clamp(40px,5vw,70px)}
.hero-meta>div{background:rgba(11,15,19,.5);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);padding:17px clamp(14px,1.8vw,24px)}
.hero-meta .k{font-family:var(--mono);font-size:.6rem;letter-spacing:.16em;text-transform:uppercase;color:rgba(247,246,243,.42);margin-bottom:7px}
.hero-meta .v{font-size:.86rem;color:#fff;font-weight:600;letter-spacing:-.01em;line-height:1.5}
.hero-visual{display:none}

/* ── 深色面板 ─────────────────────────────────────── */
.panel-dark{background:var(--device);color:#F7F6F3;border-radius:var(--r-xl);padding:clamp(26px,3.4vw,46px);position:relative;overflow:hidden}
.panel-dark::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:52px 52px;pointer-events:none}
.panel-dark>*{position:relative}
.panel-dark h2,.panel-dark h3,.panel-dark h4{color:#FFF}
.panel-dark .lede,.panel-dark p{color:rgba(247,246,243,.74)}
.panel-dark .num{color:#FFF}

/* 净化链路 */
.chain{display:grid;gap:0}
.chain-row{display:grid;grid-template-columns:46px minmax(0,1fr) minmax(0,1.1fr);gap:clamp(12px,1.8vw,22px);align-items:baseline;padding:13px 0;border-bottom:1px solid var(--device-line)}
.chain-row:last-child{border-bottom:0}
.chain-row .n{font-family:var(--mono);font-size:.68rem;color:var(--brand-glow);letter-spacing:.08em}
.chain-row .t{font-weight:600;font-size:.96rem;color:#FFF;letter-spacing:-.01em}
.chain-row .d{font-size:.82rem;color:rgba(247,246,243,.56);line-height:1.7}
.chain-light .chain-row{border-bottom-color:var(--line)}
.chain-light .chain-row .n{color:var(--brand-ink)}
.chain-light .chain-row .t{color:var(--ink)}
.chain-light .chain-row .d{color:var(--steel)}

/* 技术示意图 */
.svg-cover{background:var(--device);border-radius:var(--r-xl);overflow:hidden;position:relative}
.svg-cover .cv-tag{position:absolute;left:16px;bottom:16px;font-family:var(--mono);font-size:.6rem;letter-spacing:.14em;color:var(--brand-glow);background:rgba(16,20,24,.72);padding:6px 11px;border-radius:99px;border:1px solid var(--device-line)}

/* 产品图 */
.photo{border-radius:var(--r-l);overflow:hidden;background:var(--paper-2);border:1px solid var(--line);position:relative}
.photo img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block}
.photo.ratio-11 img{aspect-ratio:1/1}
.photo.ratio-169 img{aspect-ratio:16/10}
.photo .ph-badge{position:absolute;left:13px;bottom:13px;font-family:var(--mono);font-size:.6rem;letter-spacing:.14em;background:rgba(16,20,24,.82);color:#FB7A2E;padding:6px 10px;border-radius:99px}
.photo figcaption{padding:12px 15px;font-size:.79rem;color:var(--steel);background:var(--card);border-top:1px solid var(--line)}

/* ── 统计带 ───────────────────────────────────────── */
.stats-band{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stats-band.dark{background:#0B0F13;border:0;padding:clamp(30px,3.6vw,48px) 0}
.stats-band.dark .stat-v{color:var(--brand-glow)}
.stats-band.dark .stat-k{color:rgba(247,246,243,.6)}
.stats-band.dark .stat-src{color:rgba(247,246,243,.34)}
.stats-band .wrap{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(16px,2.4vw,34px);padding-top:clamp(28px,3.4vw,44px);padding-bottom:clamp(28px,3.4vw,44px)}
.stat .stat-v{font-family:var(--latin);font-weight:700;font-size:clamp(1.5rem,1.1rem + 1.4vw,2.2rem);line-height:1;letter-spacing:-.035em;font-variant-numeric:tabular-nums}
.stat .stat-v small{font-size:.44em;font-weight:600;color:var(--steel);margin-left:4px;letter-spacing:0}
.stat .stat-k{font-size:.76rem;color:var(--steel-dim);margin-top:9px;line-height:1.5}
.stat .stat-src{font-family:var(--sans);font-size:.68rem;color:var(--steel-dim);opacity:.75;margin-top:5px;display:block}

/* ── 表格 ─────────────────────────────────────────── */
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:var(--r-m);background:var(--card)}
table{width:100%;border-collapse:collapse;min-width:660px;font-size:.87rem}
caption{caption-side:top;text-align:left;padding:14px 16px;font-weight:600;font-size:.87rem;border-bottom:1px solid var(--line);background:var(--paper-2);letter-spacing:-.01em}
th,td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.65}
thead th{font-family:var(--mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--steel-dim);font-weight:500;background:var(--paper-2);white-space:nowrap}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover td{background:rgba(242,106,27,.04)}
td.m,th.m{font-family:var(--mono);font-variant-numeric:tabular-nums;white-space:nowrap}
td b{color:var(--brand-ink);font-weight:600}
.model-cell{font-family:var(--mono);font-weight:500;color:var(--ink);white-space:nowrap;font-size:.84rem}

/* ── 面包屑 / 详情 ───────────────────────────────── */
.crumbs{padding:calc(var(--nav-h) + 22px) 0 0}
.crumbs .wrap{display:flex;align-items:center;gap:9px;flex-wrap:wrap;font-size:.76rem;color:var(--steel-dim)}
.crumbs a{color:var(--steel)}.crumbs a:hover{color:var(--brand-ink)}
.crumbs span{opacity:.4}.crumbs b{color:var(--ink);font-weight:600}
.phead{padding:clamp(30px,3.8vw,52px) clamp(20px,4.5vw,44px);max-width:var(--maxw);margin:0 auto}
.phead-grid{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,.98fr);gap:clamp(28px,4vw,60px);align-items:center}
.phead h1{font-size:clamp(1.95rem,1.3rem + 2.4vw,3.15rem);margin-bottom:var(--sp-3)}
.spec-pills{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;margin-top:var(--sp-4)}
.spec-pills div{background:var(--card);padding:13px 16px}
.spec-pills .k{font-family:var(--sans);font-size:.72rem;color:var(--steel-dim);letter-spacing:.02em;margin-bottom:6px;font-weight:500}
.spec-pills .v{font-family:var(--sans);font-size:.9rem;font-weight:600;color:var(--ink);letter-spacing:-.01em}
.sub-nav{display:flex;gap:6px;flex-wrap:wrap;padding:12px 0;position:sticky;top:var(--nav-h);background:var(--paper);z-index:20;border-bottom:1px solid var(--line);margin-bottom:clamp(28px,3.6vw,48px)}
.sub-nav a{font-size:.8rem;font-weight:500;color:var(--steel);padding:8px 14px;border-radius:99px;transition:.2s}
.sub-nav a:hover{color:var(--brand-ink);background:var(--card)}
.blk{padding:clamp(26px,3vw,42px) 0;border-top:1px solid var(--line)}
.blk:first-of-type{border-top:0;padding-top:0}
.blk>.h2,.blk>.h3{margin-bottom:var(--sp-4)}
.split{display:grid;grid-template-columns:minmax(0,.72fr) minmax(0,1.28fr);gap:clamp(24px,3.4vw,56px);align-items:start}
.pain-list{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden}
.pain{display:grid;grid-template-columns:auto minmax(0,1fr);gap:16px;background:var(--card);padding:18px 22px}
.pain .pi{font-family:var(--mono);font-size:.66rem;color:var(--brand-ink);margin-top:3px}
.pain h4{font-size:.96rem;margin-bottom:5px}
.pain p{font-size:.87rem;margin:0;color:var(--steel);line-height:1.75}
.feat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden}
.feat{background:var(--card);padding:clamp(20px,2.3vw,28px);min-width:0}
.feat .ft{font-weight:650;font-size:.99rem;margin-bottom:9px;padding-left:17px;position:relative;letter-spacing:-.012em}
.feat .ft::before{content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;border-radius:50%;background:var(--brand)}
.feat p{margin:0;font-size:.87rem;color:var(--steel);line-height:1.8;padding-left:17px}
.scene-list{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden}
.scene-item{display:grid;grid-template-columns:minmax(150px,.55fr) minmax(0,1fr);gap:18px;padding:15px 20px;background:var(--card)}
.scene-item b{font-size:.92rem;font-weight:600}
.scene-item span{font-size:.87rem;color:var(--steel)}
.food-chips{display:flex;gap:8px;flex-wrap:wrap}
/* 首页品类板块：四张设备类卡片，卡片内品类走横向滑动条，避免标签云堆叠 */
.food-grid{gap:clamp(14px,1.8vw,22px);margin-top:clamp(18px,2.4vw,30px)}
.fcard{display:flex;flex-direction:column;gap:12px;padding:clamp(20px,2.4vw,28px);border-radius:var(--r-l);background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow-s);min-width:0}
.fcard-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.fcard-top .idx{font-family:var(--mono);font-size:.64rem;letter-spacing:.14em;color:var(--steel-dim)}
.fcard h3{margin:0}
.fcard-brief{margin:0;font-size:.86rem;color:var(--steel);line-height:1.75}
.fcard .chip-rail{margin:2px 0 0}
.fcard-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:12px;border-top:1px solid var(--line)}
.fcard-n{font-family:var(--mono);font-size:.66rem;letter-spacing:.1em;color:var(--steel-dim)}
.fcard-foot a{font-size:.85rem;font-weight:600;color:var(--brand-ink)}
.fcard-foot a:hover{color:var(--brand)}
.chip-more{border-style:dashed;color:var(--brand-ink);font-weight:600}
@media(max-width:900px){.food-grid{grid-template-columns:1fr}}
.chip[href]{cursor:pointer}
.chip[href]:hover{background:var(--ink);color:#FFF;border-color:var(--ink)}
.note{background:rgba(143,94,6,.07);border-left:2px solid var(--warn);border-radius:0 var(--r-s) var(--r-s) 0;padding:14px 18px;font-size:.85rem;color:#5C4510;line-height:1.8}
.note.ok{background:rgba(10,122,82,.08);border-left-color:var(--ok);color:#0A5A3E}
.note a{color:inherit;font-weight:600;text-decoration:underline;text-underline-offset:2px}
.evidence{background:var(--paper-2);border:1px dashed rgba(194,65,12,.4);border-radius:var(--r-m);padding:16px 18px;font-size:.85rem;color:var(--steel);line-height:1.8}
.compare{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden}
.compare>div{padding:clamp(20px,2.4vw,28px);background:var(--card)}
.compare .no{background:var(--paper-2)}
.compare h4{margin-bottom:16px;font-size:.94rem}
.compare h4 span{display:inline-block;font-family:var(--mono);font-size:.6rem;letter-spacing:.12em;padding:4px 9px;border-radius:99px;margin-right:9px;vertical-align:2px}
.compare .no h4 span{background:rgba(196,42,74,.12);color:var(--bad)}
.compare .yes h4 span{background:rgba(10,122,82,.12);color:var(--ok)}
.compare ul{margin:0;padding:0;list-style:none;display:grid;gap:10px}
.compare li{font-size:.87rem;line-height:1.7;padding-left:18px;position:relative;color:var(--ink-soft)}
.compare .no li::before{content:"×";position:absolute;left:0;color:var(--bad);font-weight:700}
.compare .yes li::before{content:"✓";position:absolute;left:0;color:var(--ok);font-weight:700}

/* 三级闭环 */
.tri{display:grid;gap:1px;background:var(--device-line);border:1px solid var(--device-line);border-radius:var(--r-l);overflow:hidden}
.tri-row{background:var(--device);padding:clamp(20px,2.4vw,30px);display:grid;grid-template-columns:minmax(0,.42fr) minmax(0,1fr);gap:clamp(16px,2.4vw,34px);align-items:start}
.tri-row .lv{font-family:var(--sans);font-size:.72rem;letter-spacing:.04em;color:var(--brand-glow);display:block;margin-bottom:10px}
.tri-row h3{font-size:1.12rem;color:#FFF;margin-bottom:0;letter-spacing:-.015em}
.tri-row p{font-size:.89rem;line-height:1.85;margin:0;color:rgba(247,246,243,.68)}
.tri-num{font-family:var(--latin);font-weight:700;font-size:2.4rem;line-height:1;color:rgba(251,122,46,.32);letter-spacing:-.05em;display:block;margin-bottom:8px}

/* ── FAQ ──────────────────────────────────────────── */
.faq-list{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden}
.faq{background:var(--card);padding:18px 22px}
.faq h3{font-family:var(--sans);font-size:.95rem;font-weight:650;margin-bottom:7px;letter-spacing:-.012em}
.faq p{font-size:.87rem;color:var(--steel);line-height:1.85;margin:0}
.faq .fl{display:inline-block;margin-top:11px;font-family:var(--sans);font-size:.72rem;color:var(--brand-ink);letter-spacing:.02em;font-weight:600}

/* ── CTA 带 ───────────────────────────────────────── */
.cta-band{background:var(--device);color:#F7F6F3;border-radius:var(--r-xl);padding:clamp(28px,3.8vw,52px);
  display:flex;align-items:center;justify-content:space-between;gap:clamp(20px,3vw,48px);flex-wrap:wrap;position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;right:-100px;top:-100px;width:380px;height:380px;border-radius:50%;background:radial-gradient(circle,rgba(242,106,27,.26),transparent 66%)}
.cta-band>*{position:relative;z-index:1}
.cta-band h2{font-size:clamp(1.4rem,1.1rem + 1vw,1.95rem);margin-bottom:10px;color:#FFF}
.cta-band p{margin:0;color:rgba(247,246,243,.68);font-size:.9rem;max-width:50ch}
.cta-phone{display:block;margin-top:16px;font-family:var(--latin);font-size:clamp(1.35rem,1.05rem + 1vw,1.8rem);font-weight:700;color:var(--brand-glow);letter-spacing:-.03em}
.cta-phone small{display:block;font-family:var(--mono);font-size:.66rem;font-weight:400;color:rgba(247,246,243,.5);letter-spacing:.08em;margin-top:5px}
.cta-actions{display:grid;gap:10px;min-width:214px}

/* 页尾 CTA 带里的就地询盘：默认折叠，点「获取报价」展开，页面不再被拉长 */
.qform{flex:1 1 100%;margin-top:6px;border-top:1px solid rgba(247,246,243,.14);padding-top:14px}
.qform>summary{list-style:none;cursor:pointer;font-size:.86rem;font-weight:600;color:rgba(247,246,243,.72);
  display:inline-flex;align-items:center;gap:8px;padding:6px 0;user-select:none}
.qform>summary::-webkit-details-marker{display:none}
.qform>summary::before{content:"";width:7px;height:7px;border-right:1.6px solid var(--brand-glow);border-bottom:1.6px solid var(--brand-glow);transform:rotate(45deg) translateY(-1px)}
.qform[open]>summary{color:#FFF}
.qform[open]>summary::before{transform:rotate(-135deg)}
.qform-body{margin-top:14px;background:var(--card);border-radius:var(--r-l);padding:clamp(16px,2.2vw,22px);max-width:560px}
.qform-body .card{border:0;background:transparent;padding:0;box-shadow:none}
.qform-body #leadResult{background:rgba(10,122,82,.10);border-color:rgba(10,122,82,.35)}

/* 联系页精简后的三个小组件：三步流程条、地址导航卡、极简要点列表、结尾内链行 */
.next3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:14px}
.next3-i{display:flex;flex-direction:column;gap:5px;padding:14px 15px;border:1px solid var(--device-line);border-radius:var(--r-m);background:var(--device-2)}
.next3-i .n{font-family:var(--mono);font-size:.62rem;letter-spacing:.14em;color:var(--brand-glow)}
.next3-i b{font-size:.95rem;color:#F7F6F3;font-weight:650}
.next3-i span:last-child{font-size:.8rem;color:rgba(247,246,243,.66);line-height:1.65}
/* 到访指引：嵌入式百度地图 + 地址条（参考业主现站结构，但按本站圆角/发丝线/安全橙口径重画） */
.map-embed-wrap{position:relative;border:1px solid var(--line-2);border-radius:var(--r-l);overflow:hidden;background:var(--paper-2)}
.map-embed{display:block;width:100%;height:clamp(320px,34vw,460px);border:0;filter:saturate(.96) contrast(1.02)}
.addr-bar{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:14px;padding:clamp(16px,2vw,22px);
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--shadow-s)}
.addr-pin{flex:none;width:12px;height:12px;border-radius:50% 50% 50% 0;transform:rotate(-45deg);background:var(--brand);box-shadow:0 0 0 4px rgba(242,106,27,.14)}
.addr-txt{flex:1 1 320px;min-width:0;display:flex;flex-direction:column;gap:5px}
.addr-txt b{font-size:1.02rem;font-weight:650;letter-spacing:-.01em}
.addr-txt span{font-size:.82rem;color:var(--steel);line-height:1.7}
.addr-act{display:flex;gap:10px;flex-wrap:wrap;margin-left:auto}
.addr-act .btn{height:42px;font-size:.84rem}
@media(max-width:760px){.addr-act{width:100%}.addr-act .btn{flex:1;justify-content:center}.map-embed{height:300px}}
.btn-ghost-dark{display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 18px;border-radius:99px;
  border:1px solid rgba(247,246,243,.26);color:#F7F6F3;font-size:.86rem;font-weight:600;background:transparent;cursor:pointer;transition:border-color .2s,background .2s}
.btn-ghost-dark:hover{border-color:var(--brand-glow);background:rgba(242,106,27,.12)}
.minis{list-style:none;margin:0;padding:0;display:grid;gap:10px}
/* 蜜罐字段：真人看不见也 tab 不到，脚本自动填充即被服务端丢弃 */
.hp{position:absolute!important;left:-9999px;width:1px;height:1px;opacity:0;pointer-events:none}
.minis li{position:relative;padding-left:18px;font-size:.87rem;color:var(--steel);line-height:1.75}
.minis li::before{content:"";position:absolute;left:0;top:.66em;width:6px;height:6px;border-radius:50%;background:var(--brand)}
.seealso{margin:clamp(22px,3vw,34px) 0 0;padding-top:18px;border-top:1px solid var(--line);font-size:.86rem;color:var(--steel-dim);display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.seealso a{color:var(--brand-ink);font-weight:600}
.seealso a:hover{color:var(--brand)}
.seealso span{color:var(--line-strong)}
@media(max-width:760px){.next3{grid-template-columns:1fr}.map-lite{align-items:flex-start}.qform-body{max-width:none}}

/* ── 列表 / 文章 ─────────────────────────────────── */
.pill-nav{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:clamp(24px,3vw,36px)}
.pill-nav a{display:inline-flex;align-items:center;gap:8px;min-height:40px;padding:0 17px;border-radius:99px;border:1px solid var(--line-2);font-size:.84rem;font-weight:500;color:var(--steel);background:var(--card);transition:.2s}
.pill-nav a:hover{border-color:var(--brand);color:var(--brand-ink)}
.pill-nav a.on{background:var(--ink);border-color:var(--ink);color:#FFF}
.pill-nav a i{font-style:normal;font-family:var(--mono);font-size:.62rem;opacity:.6}
.arow{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:clamp(14px,2vw,24px);align-items:center;background:var(--card);border:1px solid var(--line);border-radius:var(--r-m);padding:17px 22px;transition:border-color .25s,transform .25s var(--ease)}
.arow:hover{border-color:var(--brand-ink);transform:translateX(3px)}
.arow .ad{font-family:var(--mono);font-size:.66rem;color:var(--steel-dim);white-space:nowrap}
.arow .at{font-weight:600;font-size:.97rem;line-height:1.55;letter-spacing:-.012em}
.arow .ac{font-family:var(--mono);font-size:.6rem;letter-spacing:.1em;color:var(--brand-ink);background:rgba(242,106,27,.11);padding:5px 10px;border-radius:99px;white-space:nowrap}
.article-body{max-width:70ch}
.article-body h2{font-size:clamp(1.24rem,1.08rem + .6vw,1.55rem);margin:clamp(32px,3.8vw,50px) 0 14px;scroll-margin-top:calc(var(--nav-h) + 20px);font-weight:700}
.article-body h2::before{content:attr(data-n);display:block;font-family:var(--mono);font-size:.62rem;letter-spacing:.18em;color:var(--brand-ink);margin-bottom:9px;font-weight:500}
.article-body p{font-size:1rem;line-height:1.95;color:var(--ink-soft);margin:15px 0}
.article-body ul,.article-body ol{padding-left:1.25em;margin:15px 0;display:grid;gap:10px}
.article-body li{font-size:.97rem;line-height:1.85;color:var(--ink-soft)}
.article-body ol{counter-reset:s;list-style:none;padding-left:0}
.article-body ol li{counter-increment:s;padding-left:38px;position:relative}
.article-body ol li::before{content:counter(s,decimal-leading-zero);position:absolute;left:0;top:.25em;font-family:var(--mono);font-size:.72rem;color:var(--brand-ink);font-weight:500}
.article-body .table-scroll{margin:22px 0}
.article-body table{min-width:560px}
.a-meta{display:flex;gap:clamp(12px,2vw,26px);flex-wrap:wrap;align-items:center;padding:15px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-bottom:clamp(26px,3.2vw,42px);font-size:.78rem;color:var(--steel-dim);font-family:var(--sans)}

/* ── 选型器 ───────────────────────────────────────── */
.calc{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:clamp(20px,2.6vw,38px);align-items:start}
.field{margin-bottom:20px}
.field label{display:block;font-size:.82rem;font-weight:600;margin-bottom:9px;color:var(--ink);letter-spacing:-.008em}
.field label span{font-weight:400;color:var(--steel-dim);font-size:.75rem;margin-left:6px}
select,input[type=text],input[type=tel],textarea{width:100%;min-height:48px;padding:12px 15px;border:1px solid var(--line-strong);border-radius:var(--r-m);background:var(--card);font-size:16px;color:var(--ink);transition:border-color .2s,box-shadow .2s}
textarea{min-height:110px;resize:vertical;line-height:1.7}
select:focus,input:focus,textarea:focus{outline:0;border-color:var(--brand);box-shadow:0 0 0 3px rgba(242,106,27,.15)}
.seg{display:grid;grid-template-columns:repeat(auto-fit,minmax(94px,1fr));gap:7px}
.seg button{min-height:46px;padding:8px 10px;border:1px solid var(--line-2);background:var(--card);border-radius:var(--r-s);font-size:.82rem;font-weight:500;color:var(--steel);cursor:pointer;transition:.2s;line-height:1.35}
.seg button:hover{border-color:var(--brand)}
.seg button.on{background:var(--ink);border-color:var(--ink);color:#FFF}
.range-row{display:flex;align-items:center;gap:16px}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:3px;background:var(--paper-3);border-radius:99px;outline:0;min-height:28px}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:22px;height:22px;border-radius:50%;background:var(--brand);border:3px solid var(--card);box-shadow:0 2px 8px rgba(16,20,24,.26);cursor:pointer}
input[type=range]::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--brand);border:3px solid var(--card);cursor:pointer}
.range-val{font-family:var(--latin);font-weight:700;font-size:1.1rem;min-width:52px;text-align:right;font-variant-numeric:tabular-nums}
.result{background:var(--device);color:#F7F6F3;border-radius:var(--r-xl);padding:clamp(24px,2.8vw,36px);border:1px solid rgba(255,255,255,.06);position:sticky;top:calc(var(--nav-h) + 18px)}
.result .r-k{font-family:var(--sans);font-size:.74rem;letter-spacing:.04em;color:var(--brand-glow);margin-bottom:10px}
.result .r-big{font-family:var(--latin);font-weight:700;font-size:clamp(2.1rem,1.4rem + 2.8vw,3.3rem);line-height:1;letter-spacing:-.045em;font-variant-numeric:tabular-nums}
.result .r-big small{font-size:.3em;font-weight:600;color:rgba(247,246,243,.55);margin-left:6px;letter-spacing:.02em}
.r-rows{margin:24px 0 0;display:grid;gap:1px;background:var(--device-line);border:1px solid var(--device-line);border-radius:var(--r-m);overflow:hidden}
.r-rows>div{background:var(--device);padding:12px 16px;display:grid;grid-template-columns:1fr 1.3fr;gap:14px;align-items:center}
.r-rows .k{font-size:.77rem;color:rgba(247,246,243,.5)}
.r-rows .v{font-size:.87rem;font-weight:600;text-align:right;color:#FFF}
.r-warn{margin-top:16px;background:rgba(143,94,6,.16);border:1px solid rgba(251,190,80,.26);border-radius:var(--r-m);padding:13px 16px;font-size:.82rem;line-height:1.75;color:#F7DFB2}
.r-rec{display:grid;gap:7px;margin-top:14px}
.r-rec .rec-i{display:flex;align-items:center;justify-content:space-between;gap:14px;background:rgba(255,255,255,.05);border:1px solid var(--device-line);border-radius:var(--r-s);padding:11px 14px}
.r-rec .rec-i b{font-family:var(--mono);font-size:.84rem;color:#FFF;font-weight:500}
.r-rec .rec-i span{font-size:.77rem;color:rgba(247,246,243,.58);text-align:right}

/* ── 页脚 ─────────────────────────────────────────── */
.footer{background:var(--card);border-top:1px solid var(--line);padding:clamp(46px,5.5vw,80px) 0 0;margin-top:clamp(44px,6vw,96px)}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.45fr) repeat(4,minmax(0,1fr));gap:clamp(20px,2.4vw,38px)}
/* 页脚四列链接：右侧挂省份/城市级别小标签，让「服务区域」列与产品线列一样有信息密度 */
.fcol ul li a{display:flex;align-items:baseline;gap:7px}
.fc-tag{font-family:var(--mono);font-size:.62rem;letter-spacing:.04em;color:var(--steel-dim);opacity:.75;flex:none}
.fcol ul li a:hover .fc-tag{color:var(--brand-ink);opacity:1}
.footer h4{font-family:var(--mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--steel-dim);margin-bottom:18px;font-weight:500}
.footer ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.footer li a,.footer li{font-size:.86rem;color:var(--steel);line-height:1.7}
.footer li a:hover{color:var(--brand-ink)}
.footer .brand{margin-bottom:2px}
.footer .brand-mark{width:40px;height:40px}
.footer .brand-txt{gap:6px}
.footer .brand-cn{font-size:1.34rem}
.footer .brand-word{font-size:.66rem}
.footer-brand p{font-size:.86rem;color:var(--steel);line-height:1.85;margin:16px 0 0;max-width:38ch}
.footer-bottom{margin-top:clamp(34px,4.4vw,58px);padding:22px 0;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:.75rem;color:var(--steel-dim)}
.footer-bottom a:hover{color:var(--brand-ink)}
.foot-cta{display:inline-flex;align-items:center;gap:7px}

/* ── 移动端固定操作条 ─────────────────────────────── */
.mbar{display:none}
@supports(padding:max(0px)){.mbar{padding-bottom:max(0px,env(safe-area-inset-bottom))}}

/* ── 动效 ─────────────────────────────────────────── */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}}

/* ── 响应式 ───────────────────────────────────────── */
@media(max-width:1320px){.nav-tel{display:none}}
/* 导航加了「联系我们」变成 8 项：760–1000px 是最挤的一段，先收字号与间距，
   880px 以下隐藏右上 CTA（移动端底栏已有「免费选型」，联系我们本身也在导航里） */
@media(max-width:1000px){
  .nav-links{gap:clamp(9px,1.35vw,16px)}
  .nav-links a{font-size:.84rem}
}
@media(max-width:880px){.nav .nav-cta{display:none}}
@media(max-width:1100px){
  :root{--nav-h:72px}
  .hero-meta{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero-grid,.phead-grid,.calc,.split,.section-lead{grid-template-columns:1fr}
  .section-lead{gap:18px}
  .result{position:static}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid .footer-brand{grid-column:1/-1}
  .tri-row{grid-template-columns:1fr;gap:12px}
}
@media(max-width:900px){
  .g4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .g3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .feat-grid,.compare{grid-template-columns:1fr}
  .chain-row{grid-template-columns:40px minmax(0,1fr);row-gap:5px}
  .chain-row .d{grid-column:2}
  .hero-stats,.stats-band .wrap{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:22px}
}
@media(max-width:760px){
  :root{--nav-h:64px}
  .brand{gap:9px}
  .brand-mark{width:30px;height:30px}
  .brand-txt{gap:4px}
  .brand-cn{font-size:1.05rem}
  .brand-word{font-size:.56rem;letter-spacing:.28em}
  .nav-links,.nav .nav-cta,.nav .nav-tel{display:none}
  .burger{display:block}
  .hero{padding-top:calc(var(--nav-h) + 52px)}
  .hero-meta{grid-template-columns:1fr 1fr}
  .hero-meta>div{padding:14px 15px}
  .pcard h3{font-size:.92rem}
  .scard{aspect-ratio:3/4}
  .hero h1{max-width:none;font-size:clamp(2rem,8.4vw,2.7rem)}
  .g2,.g3,.g4{grid-template-columns:1fr}
  .spec-pills{grid-template-columns:1fr}
  .scene-item{grid-template-columns:1fr;gap:4px}
  .arow{grid-template-columns:1fr;gap:7px;padding:15px 18px}
  .arow .ac{justify-self:start}
  .sub-nav{position:static}
  /* 产品详情页移动端：页内导航改成横向滑动条（原来 8 个胶囊换行占三行），
     卖点与场景改回两列紧凑排布，长列表交给 fold 折叠 */
  .sub-nav{flex-wrap:nowrap;overflow-x:auto;gap:8px;padding:10px 0 12px;scrollbar-width:none;-ms-overflow-style:none}
  .sub-nav::-webkit-scrollbar{display:none}
  .sub-nav a{flex:none;padding:7px 13px;font-size:.78rem;background:var(--card);border:1px solid var(--line)}
  .feat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .feat{padding:14px 13px}
  .feat .ft{font-size:.85rem;margin-bottom:6px;padding-left:14px}
  .feat .ft::before{width:5px;height:5px;top:.55em}
  .feat p{font-size:.76rem;line-height:1.7;padding-left:14px}
  .pain{padding:14px 15px;gap:12px}
  .pain p{font-size:.82rem;line-height:1.7}
  .scene-item{grid-template-columns:1fr;gap:4px;padding:13px 15px}
  .blk{padding:28px 0}
  body{padding-bottom:54px}
  .mbar{display:flex;align-items:center;justify-content:space-between;gap:12px;position:fixed;left:0;right:0;bottom:0;z-index:70;
    height:54px;padding:0 14px;background:rgba(11,15,19,.94);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    border-top:1px solid rgba(251,122,46,.22);transition:transform .32s var(--ease),opacity .3s var(--ease)}
  .mbar.hide{transform:translateY(105%);opacity:0}
  .mbar .m-t{display:flex;flex-direction:column;line-height:1.25;min-width:0}
  .mbar .m-t i{font-style:normal;font-size:.6rem;letter-spacing:.12em;color:rgba(247,246,243,.5);font-family:var(--mono)}
  .mbar .m-t b{font-family:var(--latin);font-size:1.02rem;letter-spacing:-.03em;color:#fff;font-weight:700}
  .mbar a.m1{text-decoration:none}
  .mbar .m2{display:inline-flex;align-items:center;gap:6px;min-height:38px;padding:0 16px;border-radius:99px;
    background:var(--brand);color:var(--ink);font-size:.82rem;font-weight:700;flex:none}
  .cta-actions{width:100%}
  .cta-band .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .blk{padding:26px 0}
  .pain,.feat,.faq,.scene-item{padding-left:18px;padding-right:18px}
}
@media(max-width:420px){
  .brand-sub{display:none}
  .hero-stats{gap:14px}
  table{font-size:.82rem}
  th,td{padding:11px 12px}
}
@media print{.nav,.drawer,.mbar,.cta-band,.sub-nav{display:none!important}body{background:#fff}}

/* ── 联系卡（替换四格 mono 表） ───────────────────── */
.contact-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-xl);overflow:hidden}
.cc-main{display:grid;gap:6px;padding:clamp(22px,2.6vw,30px);background:var(--device);color:#F7F6F3;position:relative;overflow:hidden}
.cc-main::after{content:"";position:absolute;right:-70px;top:-70px;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle,rgba(242,106,27,.26),transparent 68%)}
.cc-main>*{position:relative;z-index:1}
.cc-k{font-size:.72rem;letter-spacing:.06em;color:rgba(247,246,243,.6);font-weight:500}
.cc-n{font-family:var(--latin);font-weight:700;font-size:clamp(1.7rem,1.2rem + 2vw,2.5rem);line-height:1.05;letter-spacing:-.035em;color:#FFF;display:block}
.cc-act{display:inline-flex;align-items:center;gap:7px;margin-top:12px;font-size:.82rem;font-weight:600;color:var(--brand-glow)}
.cc-main:hover .cc-act{color:#FFF}
.cc-rows{display:grid;gap:1px;background:var(--line)}
.cc-rows>div{background:var(--card);padding:15px clamp(20px,2.4vw,28px);display:grid;grid-template-columns:minmax(78px,.34fr) minmax(0,1fr);gap:16px;align-items:baseline}
.cc-rows dt,.cc-rows .k2{font-size:.76rem;color:var(--steel-dim);letter-spacing:.02em}
.cc-rows .v2{font-size:.94rem;font-weight:600;color:var(--ink);letter-spacing:-.01em;line-height:1.6}
.cc-rows a.v2:hover{color:var(--brand-ink)}
.cc-rows .v2 small{display:block;font-size:.76rem;font-weight:400;color:var(--steel);margin-top:3px;letter-spacing:0}
.cc-copy{display:inline-flex;align-items:center;gap:6px;margin-left:10px;font-size:.72rem;font-weight:600;color:var(--brand-ink);background:rgba(242,106,27,.11);border:0;border-radius:99px;padding:5px 12px;cursor:pointer;font-family:var(--sans)}
.cc-copy:hover{background:rgba(242,106,27,.2)}
@media(max-width:520px){.cc-rows>div{grid-template-columns:1fr;gap:4px}}

/* ── 双列紧凑卡（移动端屏效优先） ─────────────────── */
.grid-duo{grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(12px,1.4vw,18px)}
.grid-duo.c3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-duo>.card{padding:clamp(16px,1.6vw,22px)}
.grid-duo>.card .idx{margin-bottom:10px;font-size:.72rem}
.grid-duo>.card h4{font-size:.96rem;line-height:1.4}
.grid-duo>.card h3{font-size:1.02rem}
.grid-duo>.card p{font-size:.8rem;line-height:1.65}
.grid-duo .photo img{aspect-ratio:1/1}
.grid-duo .tag-row{gap:5px}
.grid-duo .chip{height:24px;padding:0 9px;font-size:.66rem}
@media(max-width:1100px){.grid-duo{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-duo.c3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){
  .grid-duo,.grid-duo.c3{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}
  .grid-duo .pcard h3{font-size:.86rem}
  .grid-duo .pcard .pc-body{padding:13px 12px 15px}
  .grid-duo .pcard .pc-body p{font-size:.74rem}
  .grid-duo .pcard .pc-go{font-size:.74rem;padding-top:11px}
  .grid-duo .scard h3{font-size:.9rem}
  .grid-duo .scard p{display:none}
  .grid-duo>.card{padding:13px 12px;border-radius:var(--r-m)}
  .grid-duo>.card .idx{font-size:.62rem;margin-bottom:7px;letter-spacing:0;padding-right:16px;line-height:1.45}
  .grid-duo>.card h4{font-size:.84rem;line-height:1.35}
  .grid-duo>.card h3{font-size:.88rem}
  .grid-duo>.card p{font-size:.72rem;line-height:1.55}
  .grid-duo .chip{height:22px;padding:0 7px;font-size:.6rem}
  .grid-duo .tag-row.tight{gap:4px}
  .grid-duo .card-link::after,.card-link::after{right:12px;top:12px;font-size:.9rem}
  .grid-duo .go{font-size:.72rem !important}
}
@media(max-width:400px){
  .grid-duo,.grid-duo.c3{gap:7px}
  .grid-duo>.card{padding:11px 10px}
  .grid-duo>.card h4{font-size:.79rem}
}

/* 卡片标题：移动端优先保证不断词，必要时缩字号 */
.grid-duo>.card h2.h3,.grid-duo>.card h3{font-size:.94rem;line-height:1.32;word-break:keep-all}
@media(max-width:760px){.grid-duo>.card h2.h3,.grid-duo>.card h3{font-size:.82rem;line-height:1.3}}

/* ── 产品卡（图上文下，图片占卡片一半） ───────────── */
.pcard{padding:0;overflow:hidden;display:flex;flex-direction:column;gap:0}
.pcard .pc-img{position:relative;flex:none;background:linear-gradient(158deg,#F4F3F0,#E4E2DE);aspect-ratio:4/3;overflow:hidden}
.pcard .pc-img img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .6s var(--ease)}
.pcard:hover .pc-img img{transform:scale(1.045)}
.pcard .pc-tag{position:absolute;left:12px;top:12px;font-family:var(--mono);font-size:.58rem;letter-spacing:.14em;
  background:rgba(11,15,19,.82);color:#FB7A2E;padding:5px 10px;border-radius:99px;border:1px solid rgba(251,122,46,.24)}
.pcard .pc-body{padding:clamp(16px,1.8vw,22px);display:flex;flex-direction:column;gap:9px;flex:1}
.pcard .pc-series{font-family:var(--mono);font-size:.64rem;letter-spacing:.1em;color:var(--steel-dim)}
.pcard h3{font-size:1.08rem;line-height:1.35}
.pcard .pc-body p{font-size:.84rem;line-height:1.7;color:var(--steel)}
.pcard .card-link::after{display:none}
.pcard .pc-img .card-link::after{display:none}
.pcard .pc-go{margin-top:auto;padding-top:14px;display:flex;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid var(--line);font-size:.82rem;font-weight:600;color:var(--brand-ink)}
.pcard .pc-go em{font-style:normal;font-family:var(--mono);font-size:.62rem;letter-spacing:.1em;color:var(--steel-dim)}

/* ── 场景卡（摄影底 + 渐变压暗 + 白字） ───────────── */
.scard{position:relative;display:block;border-radius:var(--r-l);overflow:hidden;isolation:isolate;
  aspect-ratio:4/3;border:1px solid rgba(11,15,19,.5);background:#0B0F13;transition:transform .4s var(--ease),box-shadow .4s var(--ease)}
.scard img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-1;transition:transform .7s var(--ease);filter:saturate(.94)}
.scard::after{content:"";position:absolute;inset:0;z-index:0;
  background:linear-gradient(0deg,rgba(11,15,19,.94) 4%,rgba(11,15,19,.62) 34%,rgba(11,15,19,.08) 72%,rgba(11,15,19,.22) 100%)}
.scard:hover{transform:translateY(-3px);box-shadow:var(--shadow-m)}
.scard:hover img{transform:scale(1.06)}
.scard .sc-txt{position:absolute;left:0;right:0;bottom:0;z-index:2;padding:clamp(15px,1.6vw,20px)}
.scard .sc-kicker{font-family:var(--mono);font-size:.58rem;letter-spacing:.14em;color:rgba(247,246,243,.55);margin-bottom:7px;text-transform:uppercase}
.scard h3{color:#fff;font-size:1.04rem;line-height:1.35;margin-bottom:6px}
.scard p{font-size:.78rem;color:rgba(247,246,243,.72);margin:0;line-height:1.6}
.scard .sc-go{display:inline-flex;align-items:center;gap:6px;margin-top:11px;font-size:.78rem;font-weight:600;color:var(--brand-glow)}
.scard.no-img{background:var(--device)}
.scard.no-img::after{background:none}

/* ── 图标（橙色线条系统） ────────────────────────── */
.ic{width:38px;height:38px;border-radius:11px;background:rgba(242,106,27,.12);display:grid;place-items:center;margin-bottom:18px;flex:none}
.ic svg{width:19px;height:19px;stroke:var(--brand-ink);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.dark .ic,.panel-dark .ic{background:rgba(251,122,46,.14)}
.dark .ic svg,.panel-dark .ic svg{stroke:var(--brand-glow)}
.ic-row{display:flex;gap:14px;align-items:flex-start}

/* ── 深色区块通用 ───────────────────────────────── */
.section.dark{background:#0B0F13;color:#F7F6F3}
.section.dark .h2,.section.dark .h3,.section.dark h4{color:#fff}
.section.dark .lede,.section.dark p{color:rgba(247,246,243,.72)}
.section.dark .eyebrow{color:var(--brand-glow)}
.section.dark .card{background:rgba(255,255,255,.04);border-color:var(--device-line)}
.section.dark .card p{color:rgba(247,246,243,.66)}
.section.dark .card .idx{color:var(--brand-glow)}
.section.dark .chip{background:rgba(255,255,255,.07);color:rgba(247,246,243,.78);border-color:var(--device-line)}
.section.dark .divider,.section.dark .blk{border-color:var(--device-line)}
.section.dark .table-scroll{border-color:var(--device-line);background:transparent}
.section.dark th,.section.dark td{border-color:var(--device-line);color:rgba(247,246,243,.75)}
.section.dark thead th{background:rgba(255,255,255,.05);color:rgba(247,246,243,.5)}
.section.dark caption{background:rgba(255,255,255,.05);color:#fff;border-color:var(--device-line)}

/* ════════════════════════════════════════════════════════
   移动端真实窄屏修复（390 / 375 / 360px 实测，非 492px 假视口）
   根因一：.chip 是 white-space:nowrap，单个长标签宽度超过卡片宽度时直接溢出裁切
   根因二：.pc-tag 绝对定位在图片左上，长文本超出图片右缘
   根因三：双列在 390px 下每列仅约 175px，塞 5 行文案完全不可读
   ════════════════════════════════════════════════════════ */

/* 1) 标签允许换行，不再溢出（窄列卡片内） */
.grid-duo .tag-row{overflow:hidden}
.grid-duo .chip{white-space:normal;height:auto;line-height:1.45;padding:4px 9px;text-align:center;max-width:100%;word-break:keep-all;border-radius:99px}
.grid-duo .tag-row.tight{gap:5px}

/* 2) 图上标签限宽并省略，绝不越出图片 */
.pcard .pc-img{position:relative}
.pcard .pc-tag{max-width:calc(100% - 24px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:block}

/* 3) ≤560px：双列卡片只保留「图 + 标题 + 一个关键标签 + 入口」 */
@media(max-width:560px){
  .grid-duo .pcard .pc-img{aspect-ratio:1/1}
  .grid-duo .pcard .pc-body{padding:12px 11px 14px;gap:7px}
  .grid-duo .pcard .pc-series{display:none}
  .grid-duo .pcard .pc-body p{display:none}
  .grid-duo .pcard .pc-go em{display:none}
  .grid-duo .pcard .pc-go{font-size:.74rem;padding-top:9px;justify-content:space-between}
  .grid-duo .pcard h3{font-size:.85rem;line-height:1.32;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .grid-duo .pcard .tag-row .chip:nth-child(n+2){display:none}
  .grid-duo .pcard .tag-row .chip{font-size:.62rem;padding:3px 8px}
  .grid-duo .scard h3{font-size:.82rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .grid-duo .scard .sc-kicker{display:none}
  .grid-duo .scard .sc-go{font-size:.72rem;margin-top:8px}
  .grid-duo .scard .sc-txt{padding:12px 13px}
  .grid-duo .ic-row{display:block}
  .grid-duo .ic{margin-bottom:11px;width:32px;height:32px;border-radius:9px}
  .grid-duo .ic svg{width:17px;height:17px}
  .grid-duo .card h4{font-size:.84rem;line-height:1.35}
  .grid-duo .card p{font-size:.74rem;line-height:1.6}
}

/* 4) 极窄屏（360px 及以下）：产品卡退回单列，保证可读性优先于密度 */
@media(max-width:380px){
  .grid-duo,.grid-duo.c3{grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}
  .grid-duo .pcard h3{font-size:.78rem}
  .grid-duo .scard{aspect-ratio:1/1}
}

/* 5) 全站兜底：任何 nowrap 标签都不允许越出父容器 */
.chip{max-width:100%}
.tag-row,.food-chips{overflow:hidden}

/* ════════════════════════════════════════════════════════
   根因修复：grid/flex 子项默认 min-width:auto，会被内部 .table-scroll
   里的 table{min-width:660px} 顶宽轨道，导致 overflow-x:auto 失效、整页横向滚。
   全部容器子项显式 min-width:0，让滚动容器自己承担溢出。
   ════════════════════════════════════════════════════════ */
.split>*,.grid>*,.g2>*,.g3>*,.g4>*,.grid-duo>*,.phead-grid>*,.hero-grid>*,.section-lead>*,
.calc>*,.feat-grid>*,.compare>*,.tri-row>*,.chain-row>*,.pain>*,.scene-item>*,.r-rows>*,
.faq>*,.arow>*,.spec-pills>*,.hero-meta>*,.stats-band .wrap>*,.ic-row>*{min-width:0}
.table-scroll{min-width:0;max-width:100%;overscroll-behavior-x:contain}
.table-scroll::-webkit-scrollbar{height:6px}
.table-scroll::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:99px}
.pcard,.scard,.card{min-width:0}
.pcard .pc-img,.pcard .pc-body{min-width:0}

/* ══════════════ 可打印文档（资料下载中心） ══════════════ */
.doc-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:14px 0;margin-bottom:8px;border-bottom:1px solid var(--line)}
.doc-toolbar>a{font-size:.85rem;font-weight:600;color:var(--brand-ink)}
.doc-sheet{background:var(--card);border:1px solid var(--line);border-radius:var(--r-l);padding:clamp(22px,3vw,44px);box-shadow:var(--shadow-s)}
.doc-head{padding-bottom:20px;margin-bottom:24px;border-bottom:2px solid var(--ink)}
.doc-head .doc-brand{display:flex;align-items:center;gap:9px;margin-bottom:18px}
.doc-head .doc-brand .brand-mark{width:30px;height:30px;display:block}
.doc-head .doc-brand .brand-cn{font-size:.96rem}
.doc-head .doc-brand .brand-word{font-size:.54rem}
.doc-head h1{font-size:clamp(1.5rem,1.2rem + 1.2vw,2.1rem);margin-bottom:8px}
.doc-head p{font-size:.9rem;color:var(--steel);margin:0 0 16px;max-width:70ch}
.doc-meta{display:flex;gap:8px 22px;flex-wrap:wrap;font-size:.72rem;color:var(--steel-dim);font-family:var(--mono)}
.doc-sheet h2{font-size:1.06rem;margin:30px 0 12px;padding-left:11px;border-left:3px solid var(--brand);letter-spacing:-.01em}
.doc-sheet h2:first-of-type{margin-top:0}
.doc-sheet p{font-size:.88rem;line-height:1.8;color:var(--ink-soft)}
.doc-sheet ul{padding-left:1.25em;margin:10px 0;display:grid;gap:7px}
.doc-sheet li{font-size:.87rem;line-height:1.7;color:var(--ink-soft)}
.doc-tbl{width:100%;border-collapse:collapse;min-width:0;font-size:.82rem;margin:6px 0 4px}
.doc-tbl th,.doc-tbl td{border:1px solid var(--line-2);padding:9px 11px;text-align:left;vertical-align:top;line-height:1.55}
.doc-tbl thead th{background:var(--paper-2);font-family:var(--sans);font-size:.76rem;letter-spacing:0;text-transform:none;color:var(--ink);font-weight:700;white-space:normal}
.doc-tbl .mono{font-family:var(--mono);font-size:.78rem}
.doc-check{list-style:none;padding:0;margin:8px 0;display:grid;gap:9px}
.doc-check li{position:relative;padding:10px 12px 10px 40px;border:1px solid var(--line);border-radius:var(--r-s);background:var(--paper-2);font-size:.86rem;color:var(--ink-soft)}
.doc-check li::before{content:"";position:absolute;left:12px;top:50%;transform:translateY(-50%);width:15px;height:15px;border:1.5px solid var(--ink);border-radius:3px}
.doc-warn{margin-top:22px;padding:14px 16px;background:rgba(143,94,6,.08);border-left:2px solid var(--warn);border-radius:0 var(--r-s) var(--r-s) 0;font-size:.84rem;line-height:1.8;color:#5C4510}
.doc-foot{margin-top:30px;padding-top:16px;border-top:1px solid var(--line-2)}
.doc-foot p{font-size:.78rem;color:var(--steel);margin:0 0 6px}
.doc-src{color:var(--steel-dim)!important;font-size:.72rem!important}
@media print{
  .nav,.drawer,.mbar,.footer,.crumbs,.sub-nav,.doc-toolbar,.no-print,.progress{display:none!important}
  body{background:#fff;padding:0}
  main .section{padding:0!important}
  .wrap{max-width:none;padding:0}
  .doc-sheet{border:0;box-shadow:none;border-radius:0;padding:0}
  .doc-check li{background:#fff;break-inside:avoid}
  .doc-tbl tr{break-inside:avoid}
  .doc-sheet h2{break-after:avoid}
  @page{margin:14mm}
}

/* 文档表格：移动端横向可滑，打印时恢复整表 */
@media(max-width:760px){
  .doc-sheet{overflow:hidden}
  .doc-tbl{display:block;width:100%;max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;overscroll-behavior-x:contain}
  .doc-tbl table,.doc-tbl{scrollbar-width:thin}
  .doc-tbl::-webkit-scrollbar{height:6px}
  .doc-tbl::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:99px}
  .doc-sheet h2{font-size:1rem}
  .doc-head h1{font-size:1.45rem}
  .doc-meta{gap:6px 14px;font-size:.66rem}
}
@media print{.doc-tbl{display:table;width:100%;overflow:visible}}

@supports(padding:max(0px)){.mbar{padding-bottom:max(0px,env(safe-area-inset-bottom));height:calc(54px + env(safe-area-inset-bottom))}}

/* 移动端整页瘦身：压缩纵向节奏，减少"几个屏幕"的滚动长度 */
@media(max-width:760px){
  .section{padding:34px 0}
  .section.tight{padding:26px 0}
  .section-lead{margin-bottom:20px;gap:12px}
  .section-lead .h2{max-width:none}
  .blk{padding:22px 0}
  .divider{margin:26px 0}
  .hero{padding-top:calc(var(--nav-h) + 34px)}
  .hero .lede{margin-bottom:20px;font-size:.95rem;line-height:1.75}
  .hero-chips{margin-bottom:22px;gap:6px}
  .hero-chips .chip{height:26px;font-size:.7rem;padding:0 10px}
  .hero-stats{margin-top:26px;padding-top:20px;gap:12px}
  .hero-stats .s-v{font-size:1.4rem}
  .hero-meta>div{padding:12px 13px}
  .hero-meta .k{font-size:.56rem;margin-bottom:4px}
  .hero-meta .v{font-size:.78rem}
  .btn{min-height:46px;padding:0 20px;font-size:.86rem}
  .btns{gap:9px}
  .card{padding:15px 14px;border-radius:var(--r-m)}
  .card .idx{margin-bottom:9px;font-size:.7rem}
  .panel-dark{padding:18px 15px;border-radius:var(--r-l)}
  .cta-band{padding:22px 18px;border-radius:var(--r-l);gap:16px}
  .cta-band h2{font-size:1.18rem}
  .cta-band p{font-size:.82rem}
  .cta-phone{font-size:1.35rem;margin-top:12px}
  .chain-row{padding:9px 0;gap:12px}
  .chain-row .t{font-size:.88rem}
  .chain-row .d{font-size:.76rem;line-height:1.55}
  .tri-row{padding:16px 14px;gap:12px}
  .tri-num{font-size:1.8rem}
  .tri-row h3{font-size:.98rem}
  .tri-row p{font-size:.8rem;line-height:1.7}
  .pain{padding:14px 15px;gap:12px}
  .faq{padding:14px 15px}
  .feat{padding:15px 14px}
  .sub-nav{gap:5px;padding:10px 0;margin-bottom:20px}
  .sub-nav a{font-size:.74rem;padding:6px 11px}
  .phead{padding:22px 18px}
  .spec-pills{margin-top:16px}
  .spec-pills div{padding:11px 13px}
  .doc-sheet{padding:16px 14px;border-radius:var(--r-m)}
  .doc-head{padding-bottom:14px;margin-bottom:16px}
  .doc-sheet h2{margin:20px 0 9px;font-size:.95rem}
  .contact-card{border-radius:var(--r-l)}
  .cc-main{padding:18px}
  .cc-n{font-size:1.75rem}
  .cc-rows>div{padding:12px 15px}
  th,td{padding:9px 10px;font-size:.78rem}
  caption{padding:11px 12px;font-size:.8rem}
  .footer{padding-top:30px;margin-top:34px}
  .footer-grid{gap:0}
  .footer-bottom{padding:16px 0;margin-top:22px;font-size:.68rem}
  .arow{padding:13px 15px}
  .scard{aspect-ratio:4/5}
  .scard h3{font-size:.86rem}
  .scard .sc-go{margin-top:7px;font-size:.7rem}
}

/* 移动端页脚折叠：默认只展开第一组，其余点开 */
.fcol>summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  font-family:var(--mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--steel-dim);
  font-weight:500;margin-bottom:0;padding:13px 0;border-bottom:1px solid var(--line)}
.fcol>summary::-webkit-details-marker{display:none}
.fcol>summary::after{content:"+";font-family:var(--latin);font-size:1rem;color:var(--brand-ink);line-height:1}
.fcol[open]>summary::after{content:"−"}
.fcol>ul{padding:12px 0 4px}
@media(min-width:761px){
  .fcol{display:block}
  .fcol>summary{cursor:default;pointer-events:none;margin-bottom:18px;padding:0;border-bottom:0;display:block}
  .fcol>summary::after{display:none}
  .fcol>ul{padding:0}
}

/* ════════════════════════════════════════════════════════
   移动端长内容治理（V13）
   原则：折叠不等于隐藏——内容始终在 DOM 里，搜索引擎与 AI 照样能抓；
   用 <details> 与「显示更多」按钮做渐进增强，无 JS 时全部可见。
   ════════════════════════════════════════════════════════ */

/* FAQ 手风琴 */
.qa{background:var(--card);border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden}
.qa + .qa{margin-top:8px}
.qa > summary{list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:12px;padding:15px 18px;
  font-weight:600;font-size:.93rem;line-height:1.5;letter-spacing:-.01em;color:var(--ink)}
.qa > summary::-webkit-details-marker{display:none}
.qa > summary::after{content:"+";flex:none;font-family:var(--latin);font-size:1.1rem;color:var(--brand-ink);line-height:1.3;margin-left:auto}
.qa[open] > summary::after{content:"−"}
.qa > summary:hover{background:var(--paper-2)}
.qa .qa-body{padding:0 18px 16px;border-top:1px solid var(--line)}
.qa .qa-body p{padding-top:12px;margin:0;font-size:.87rem;color:var(--steel);line-height:1.85}
.qa .fl{display:inline-block;margin-top:11px;font-size:.72rem;color:var(--brand-ink);font-weight:600}
.qa-group{margin-bottom:26px}
.qa-group > h3{font-size:1rem;margin-bottom:12px;display:flex;align-items:center;gap:10px}
.qa-group > h3 em{font-style:normal;font-family:var(--mono);font-size:.66rem;color:var(--steel-dim);letter-spacing:.08em}
.qa-nav{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:24px}
.qa-nav a{font-size:.76rem;padding:7px 13px;border-radius:99px;border:1px solid var(--line-2);color:var(--steel);background:var(--card)}
.qa-nav a:hover{border-color:var(--brand);color:var(--brand-ink)}

/* chip 横滑轨：把 36 个城市 / 40+ 检索词从"一堵墙"变成"一条轨" */
.chip-rail{display:flex;gap:7px;overflow-x:auto;-webkit-overflow-scrolling:touch;overscroll-behavior-x:contain;
  padding:2px 0 12px;scroll-snap-type:x proximity;scrollbar-width:thin}
.chip-rail::-webkit-scrollbar{height:5px}
.chip-rail::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:99px}
.chip-rail .chip,.chip-rail a.chip{flex:none;scroll-snap-align:start}
.chip-rail-hint{font-size:.68rem;color:var(--steel-dim);margin-top:-6px}

/* 列表渐进展开：移动端默认只露前 N 条 */
.fold{--fold:9999}
/* 折叠只加显隐类，不动卡片自身的 display:flex / grid 布局 */
.fold .fold-hide{display:none!important}
.fold-btn{display:none;align-items:center;justify-content:center;gap:8px;width:100%;margin-top:12px;
  min-height:46px;border:1px solid var(--line-strong);border-radius:99px;background:var(--card);
  font-size:.84rem;font-weight:600;color:var(--ink);cursor:pointer;font-family:var(--sans)}
.fold-btn:hover{border-color:var(--brand);color:var(--brand-ink)}
.fold-btn::after{content:"▾";font-family:var(--latin);color:var(--brand-ink)}
@media(max-width:760px){.fold-btn.js{display:flex}}

/* 合规标准条目折叠 */
.std{border:1px solid var(--line);border-radius:var(--r-l);background:var(--card);overflow:hidden;margin-bottom:10px}
.std > summary{list-style:none;cursor:pointer;padding:16px 20px;display:flex;align-items:center;gap:14px}
.std > summary::-webkit-details-marker{display:none}
.std > summary:hover{background:var(--paper-2)}
.std > summary .std-t{flex:1;min-width:0}
.std > summary .std-code{font-family:var(--mono);font-size:.66rem;letter-spacing:.1em;color:var(--brand-ink);display:block;margin-bottom:4px}
.std > summary .std-n{font-weight:600;font-size:.95rem;line-height:1.45;letter-spacing:-.01em}
.std > summary::after{content:"+";flex:none;font-family:var(--latin);font-size:1.15rem;color:var(--brand-ink)}
.std[open] > summary::after{content:"−"}
.std > .std-body{padding:0 20px 18px;border-top:1px solid var(--line)}
.std > .std-body > p:first-child{padding-top:14px}

/* FAQ 分组折叠：整组收起时只留一行标题（167 条问答的页面高度从 ~59 屏降到 ~8 屏） */
.qag{border:1px solid var(--line);border-radius:var(--r-l);background:var(--card);margin-bottom:10px;overflow:hidden}
.qag > summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:12px;padding:16px 20px;font-weight:650;font-size:.98rem;letter-spacing:-.012em}
.qag > summary::-webkit-details-marker{display:none}
.qag > summary:hover{background:var(--paper-2)}
.qag > summary span{flex:1;min-width:0}
.qag > summary em{font-style:normal;font-family:var(--mono);font-size:.66rem;color:var(--steel-dim);letter-spacing:.06em;flex:none}
.qag > summary::after{content:"+";flex:none;font-family:var(--latin);font-size:1.2rem;color:var(--brand-ink);line-height:1}
.qag[open] > summary::after{content:"−"}
.qag-body{padding:4px 16px 16px;border-top:1px solid var(--line)}
.qag-body .faq-list{margin-top:12px}
.qag[open] > summary{border-bottom:1px solid var(--line)}
@media(max-width:760px){
  .qag{border-radius:var(--r-m);margin-bottom:8px}
  .qag > summary{padding:14px 16px;font-size:.9rem}
  .qag-body{padding:2px 12px 12px}
  .qag-body .qa > summary{padding:13px 14px;font-size:.86rem}
}

/* ════════════════════════════════════════════════════════
   V22 业主截图反馈修正：横向轨道滚动条、首屏参数块移动端、服务区域版式
   ════════════════════════════════════════════════════════ */

/* 品类卡里的横向轨道：系统滚动条又粗又灰，像故障；改成隐藏滚动条 + 右侧渐隐提示还能滑 */
.chip-rail{scrollbar-width:none;-ms-overflow-style:none;padding-bottom:2px}
.chip-rail::-webkit-scrollbar{display:none;width:0;height:0}
.fcard .chip-rail{mask-image:linear-gradient(90deg,#000 0,#000 86%,transparent 100%);-webkit-mask-image:linear-gradient(90deg,#000 0,#000 86%,transparent 100%)}
.fcard .chip-rail:hover{mask-image:none;-webkit-mask-image:none}
.fcard{transition:box-shadow .25s var(--ease),transform .25s var(--ease)}
.fcard:hover{box-shadow:var(--shadow-m);transform:translateY(-2px)}

/* 首屏四格参数（净化效率/机型规格/供电/排烟管道）移动端：改成紧凑两列，标签与数值贴在一起，
   不再是一格撑满一屏、中间大片空白 */
@media(max-width:760px){
  .spec-pills{grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;margin-top:14px;border-radius:var(--r-m)}
  .spec-pills div{padding:10px 12px;display:flex;flex-direction:column;gap:3px}
  .spec-pills .k{margin-bottom:0;font-size:.68rem;letter-spacing:.01em}
  .spec-pills .v{font-size:.85rem;line-height:1.45;font-weight:600}
  .phead .btns{gap:10px}
  .phead .btn{flex:1;justify-content:center;min-width:0}
}

/* 服务区域板块：长段落浮在右列显得脱节，改成标题在上、说明在下、城市条整幅铺开 */
.section-lead.stack{grid-template-columns:1fr;align-items:start;gap:12px}
.section-lead.stack .lede{max-width:74ch}
.section-lead.stack + .food-chips,.section-lead.stack ~ .chip-rail{margin-top:6px}

/* ════════════════════════════════════════════════════════
   V21 字体收敛（业主反馈「字体种类过多」，首页与产品详情同样问题）
   全站只允许三种角色：
   ① 中文 → --sans；② 拉丁与数字标签 → --latin（Space Grotesk）；
   ③ --mono 只留给纯代码串（型号 KL-D-ND16、日期、标准号）；一旦标签里含中文就退出等宽体。
   之前大量小标签用 --mono，等宽拉丁 + 雅黑中文混在一行，视觉上就是"第三种字"。
   ════════════════════════════════════════════════════════ */
.eyebrow{font-family:var(--latin);letter-spacing:.12em}
.hero-meta .k,.fcard-n,.arow .ac,.fc-tag,.footer h4,.fcol>summary,.mbar .m-t i,.pcard .pc-tag,thead th,td.m,th.m{
  font-family:var(--sans);letter-spacing:.03em;text-transform:none;font-weight:500}
.chain-row .n,.pain .pi,.fcard-top .idx,.next3-i .n,.pill-nav a i,.pcard .pc-series,.pcard .pc-go em,
.scard .sc-kicker,.svg-cover .cv-tag,.photo .ph-badge,.compare h4 span,.cta-phone small,.drawer a span,
.qa-group > h3 em,.qag > summary em,.article-body h2::before,.doc-meta,.doc-tbl .mono{font-family:var(--latin);letter-spacing:.08em}
.model-cell,.std-code,.arow .ad,.mono{font-family:var(--mono)}
.doc-meta{letter-spacing:.02em}

/* 移动端抽屉：分组 + 统一字号，右侧拉丁小标签退到辅助层级 */
.d-group{font-family:var(--latin);font-size:.62rem;letter-spacing:.16em;text-transform:uppercase;color:var(--steel);margin:22px 0 6px;padding-top:14px;border-top:1px solid var(--line)}
@media(max-width:760px){
  .drawer{padding:calc(var(--nav-h) + 10px) 0 24px}
  .drawer a{min-height:50px;font-size:1.06rem;font-weight:600;letter-spacing:0;border-bottom:1px solid var(--line)}
  .drawer a.on{color:var(--brand-ink);background:#FAECE7;border-radius:10px;margin:1px 0;border-bottom-color:transparent}
  .drawer a span{font-size:.6rem;letter-spacing:.1em}
  .drawer .d-cta{margin-top:22px;gap:9px}
  .drawer .d-cta .btn{height:48px;font-size:.9rem}
  .drawer .d-meta{padding-top:22px;font-size:.76rem;line-height:1.85}
  .nav .wrap{gap:10px}
  .burger{width:42px;height:42px}
}

/* 产品参数表移动端：8 列宽表改成「一型号一卡」，键名走 data-k，不再横向拖拽 */
@media(max-width:760px){
  .spec-scroll{overflow:visible}
  .spec-tbl{min-width:0;width:100%}
  /* caption 默认是 table-caption，表格子项改成 block 后它会被挤成一列一字竖排（业主截图里那个竖条），
     这里显式让它按块级占满整行 */
  .spec-tbl caption{display:block;width:100%;text-align:left;font-size:.8rem;color:var(--steel-dim);padding:0 0 10px}
  .spec-tbl thead{display:none}
  .spec-tbl,.spec-tbl tbody,.spec-tbl tr,.spec-tbl td{display:block;width:auto}
  .spec-tbl tr{border:1px solid var(--line);border-radius:var(--r-m);margin-bottom:10px;overflow:hidden;background:var(--card)}
  .spec-tbl td{display:flex;justify-content:space-between;align-items:baseline;gap:14px;padding:9px 13px;border-top:1px solid var(--line);font-size:.82rem;text-align:right}
  .spec-tbl td:first-child{border-top:0}
  .spec-tbl td::before{content:attr(data-k);flex:none;font-size:.76rem;color:var(--steel-dim);text-align:left;font-family:var(--sans)}
  .spec-tbl td.model-cell{background:var(--paper-2);font-weight:600;font-size:.88rem;color:var(--ink)}
}