/* =====================================================
   HEROXERA site.css — shared design system (multi-page)
   Brand v2.1 · 安全橙 #F26B1D · 石墨 #2C2C2A · 暖沙 #F7F1E6
   比例 暖沙35 / 橙27 / 石墨22 / 黄8 / 白5
   字体 Poppins（标题）· Source Sans 3（西文）· 思源黑体（中文）
        Barlow Condensed（仅数据与参数）
   ===================================================== */
:root{
  /* ---- palette ---- */
  --orange:#F26B1D;          /* 安全橙 27% — 只做主强调 */
  --orange-2:#D95A12;
  --orange-soft:rgba(242,107,29,.10);
  --orange-line:rgba(242,107,29,.34);
  --yellow:#FFB81C;          /* 信号黄 8% — 小面积信号 */
  --yellow-soft:rgba(255,184,28,.20);
  --sand:#F7F1E6;            /* 暖沙 35% — 主底色 */
  --sand-2:#F2EADB;
  --sand-3:#EBE0CC;
  --white:#FCFAF6;           /* 云雾白 5% — 卡片 */
  --line:#E5DAC6;
  --line-2:#D8CCB6;
  --graphite:#2C2C2A;        /* 石墨 22% — 文字与成片深底 */
  --graphite-2:#3A3936;
  --muted:#6E6659;
  --muted-2:#9C9384;
  --blue:#17557F;            /* 安第斯蓝 3% — 仅售后与文档 */
  --shadow:rgba(70,58,38,.10);
  /* ---- type ---- */
  --display:'Poppins','Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --body:'Source Sans 3','Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --data:'Barlow Condensed','Arial Narrow',sans-serif;
  --sans:var(--body);
  --cond:var(--data);
  --nav-h:72px;
  --ease:cubic-bezier(.22,.8,.28,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--body);background:var(--sand);color:var(--graphite);line-height:1.72;font-size:16px;overflow-x:hidden;-webkit-font-smoothing:antialiased}
::selection{background:var(--orange);color:var(--white)}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:var(--body);cursor:pointer}
section{scroll-margin-top:calc(var(--nav-h) + 20px)}
.wrap{max-width:1240px;margin:0 auto;padding:0 clamp(18px,4vw,44px)}
.num{font-family:var(--data);font-weight:600;letter-spacing:.04em}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;font-family:var(--display);font-weight:500;font-size:.88rem;letter-spacing:.01em;padding:12px 26px;border-radius:6px;border:0;transition:transform .25s var(--ease),box-shadow .25s,background .25s,color .25s,border-color .25s;white-space:nowrap}
.btn-red{background:var(--orange);color:var(--white);box-shadow:0 10px 24px rgba(242,107,29,.26)}
.btn-red:hover{background:var(--orange-2);transform:translateY(-2px);box-shadow:0 14px 30px rgba(242,107,29,.3)}
.btn-dark{background:var(--graphite);color:var(--white)}
.btn-dark:hover{background:#3F3E3A;transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--white);border:1px solid rgba(252,250,246,.42)}
.btn-ghost:hover{border-color:var(--white);transform:translateY(-2px)}
.btn-line{background:var(--white);color:var(--graphite);border:1px solid var(--line-2)}
.btn-line:hover{border-color:var(--orange);color:var(--orange);transform:translateY(-2px)}
.btn .arr{font-family:var(--data);font-size:1rem}

/* ---------- header ---------- */
.hd{position:fixed;inset:0 0 auto 0;z-index:100;height:var(--nav-h);background:rgba(247,241,230,.94);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:border-color .3s,box-shadow .3s}
.hd.scrolled{border-color:var(--line);box-shadow:0 8px 28px rgba(70,58,38,.07)}
.hd-in{max-width:1280px;height:100%;margin:0 auto;padding:0 clamp(18px,3vw,40px);display:flex;align-items:center;gap:22px}
.brand{display:flex;align-items:center;gap:11px;line-height:1.15;flex:none}
.brand .mark{flex:none;display:flex;align-items:center;justify-content:center}
.brand .mark svg{display:block}
.brand b{font-family:var(--display);font-weight:500;font-size:1.34rem;letter-spacing:.055em;color:var(--graphite);display:block;line-height:1}
.brand small{font-size:.66rem;color:var(--muted);letter-spacing:.04em;display:block;margin-top:3px;white-space:nowrap}
.nav{display:flex;gap:2px;margin-left:auto;align-items:center}
.nav > .ni{position:relative}
.nav a.nl{position:relative;display:block;font-family:var(--display);font-weight:400;font-size:.86rem;color:#544F45;padding:9px 13px;border-radius:6px;transition:color .2s,background .2s;white-space:nowrap}
.nav a.nl:hover{color:var(--graphite);background:var(--sand-2)}
.nav a.nl.on{color:var(--orange);font-weight:500}
.nav a.nl.on::after{content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;background:var(--orange);border-radius:1px}
.nav .caret{font-size:.6rem;margin-left:4px;vertical-align:1px;display:inline-block;transition:transform .25s}
.ni:hover .caret{transform:rotate(180deg)}
.drop{position:absolute;top:calc(100% + 6px);left:8px;min-width:228px;background:var(--white);border:1px solid var(--line);border-radius:10px;box-shadow:0 20px 44px rgba(70,58,38,.14);padding:7px;opacity:0;visibility:hidden;transform:translateY(8px);transition:all .25s var(--ease);z-index:60}
.ni:hover .drop,.ni:focus-within .drop{opacity:1;visibility:visible;transform:none}
.drop a{display:flex;justify-content:space-between;align-items:center;gap:10px;font-size:.84rem;color:#544F45;padding:8px 12px;border-radius:6px}
.drop a:hover{background:var(--sand);color:var(--graphite)}
.drop a span{font-family:var(--data);font-size:.76rem;color:var(--muted-2);letter-spacing:.07em}
.hd-right{display:flex;align-items:center;gap:11px;flex:none}
/* 小屏专用：报价入口移入汉堡菜单 */
.nav > .ni.nav-cta{display:none}

/* language dropdown */
.langdd{position:relative}
.langbtn{display:inline-flex;align-items:center;gap:7px;font-size:.8rem;font-weight:400;color:var(--graphite);border:1px solid var(--line-2);background:var(--white);border-radius:999px;padding:8px 14px;transition:border-color .25s}
.langbtn:hover{border-color:var(--orange);color:var(--orange)}
.langbtn svg{flex:none}
.langbtn .lc{font-size:.58rem;color:var(--muted);transition:transform .25s}
.langdd.open .langbtn .lc{transform:rotate(180deg)}
.langmenu{position:absolute;top:calc(100% + 8px);right:0;min-width:150px;background:var(--white);border:1px solid var(--line);border-radius:10px;box-shadow:0 20px 44px rgba(70,58,38,.15);padding:6px;opacity:0;visibility:hidden;transform:translateY(8px);transition:all .22s var(--ease);z-index:70}
.langdd.open .langmenu{opacity:1;visibility:visible;transform:none}
.langmenu button{display:flex;align-items:center;justify-content:space-between;gap:10px;width:100%;text-align:left;font-size:.84rem;color:#544F45;background:none;border:0;padding:8px 12px;border-radius:6px}
.langmenu button:hover{background:var(--sand)}
.langmenu button.on{color:var(--orange);font-weight:500}
.langmenu button.on::after{content:"✓";font-size:.78rem}

/* burger */
.burger{display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--line-2);border-radius:8px;background:var(--white);flex-direction:column;gap:5px;align-items:center;justify-content:center}
.burger span{width:18px;height:2px;background:var(--graphite);transition:transform .3s,opacity .3s}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- page hero (photo band · 石墨 scrim) ---------- */
.phero{position:relative;background:var(--graphite);color:var(--white);padding:calc(var(--nav-h) + clamp(48px,7vw,84px)) 0 clamp(44px,6vw,72px);overflow:hidden}
.phero .ph-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.55}
.phero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(44,44,42,.86) 0%,rgba(44,44,42,.54) 55%,rgba(44,44,42,.68) 100%)}
.phero::before{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:var(--orange);z-index:3}
.phero .wrap{position:relative;z-index:2}
.crumbs{font-family:var(--display);font-size:.74rem;letter-spacing:.06em;color:rgba(252,250,246,.62);display:flex;gap:9px;align-items:center;margin-bottom:22px}
.crumbs a:hover{color:var(--white)}
.crumbs em{font-style:normal;color:var(--yellow)}
.phero .bar{width:4px;height:calc(100% - 6px);background:var(--orange);border-radius:2px;position:absolute;left:-18px;top:3px}
.phero h1{position:relative;font-family:var(--display);font-size:clamp(1.85rem,4.2vw,2.95rem);font-weight:600;line-height:1.28;letter-spacing:.005em;max-width:22em;margin-bottom:16px}
.phero .psub{color:rgba(252,250,246,.8);max-width:640px;font-size:.97rem;line-height:1.78}

/* ---------- sections ---------- */
.sec{padding:clamp(64px,8vw,104px) 0}
.sec.tight{padding:clamp(48px,6vw,72px) 0}
.dash{width:26px;height:4px;background:var(--orange);border-radius:1px;margin-bottom:18px}
.sec h2.st{font-family:var(--display);font-size:clamp(1.5rem,3vw,2.1rem);font-weight:600;line-height:1.32;letter-spacing:.005em}
.sec .ss{color:var(--muted);max-width:780px;font-size:.96rem;margin-top:12px}
.dark{background:var(--sand-2);color:var(--graphite)}
.dark .ss{color:var(--muted)}
.alt{background:var(--white)}

/* ---------- home hero ---------- */
.hero{position:relative;background:linear-gradient(168deg,var(--white) 0%,var(--sand) 52%,var(--sand-2) 100%);color:var(--graphite);overflow:hidden;padding:calc(var(--nav-h) + clamp(44px,6vw,72px)) 0 clamp(48px,6vw,72px)}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.08fr .92fr;gap:clamp(28px,4vw,56px);align-items:center}
.hero .kick{font-family:var(--display);font-size:.76rem;font-weight:500;letter-spacing:.13em;color:var(--orange);display:flex;align-items:center;gap:10px;margin-bottom:22px}
.hero .kick::before{content:"";width:22px;height:2px;background:var(--orange)}
.hero h1{font-family:var(--display);font-size:clamp(1.9rem,4.4vw,3.05rem);font-weight:600;line-height:1.24;letter-spacing:.002em;margin-bottom:20px}
.hero .hsub{color:var(--muted);max-width:560px;font-size:.96rem;margin-bottom:32px}
.hero .hctas{display:flex;flex-wrap:wrap;gap:13px}
.hero-vis{position:relative}
.hero-vis img{width:100%;height:auto;display:block}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(58% 78% at 86% 16%,rgba(242,107,29,.09),transparent 62%)}

/* ---------- split (text + cards grid) ---------- */
.split{display:grid;grid-template-columns:1.02fr .98fr;gap:clamp(30px,4.5vw,64px);align-items:start}
.split .lead p{color:#4A4437;margin-bottom:16px;font-size:.95rem}
.split .lead h4{font-family:var(--display);font-size:1rem;font-weight:500;margin:26px 0 8px;color:var(--graphite)}
.split .lead h4 + p{color:var(--muted);font-size:.92rem}
.fgrid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.fcard{background:var(--sand-2);border:1px solid transparent;border-radius:12px;padding:24px 22px;transition:transform .3s var(--ease),box-shadow .3s,background .3s,border-color .3s}
.fcard:hover{transform:translateY(-4px);background:var(--white);border-color:var(--line);box-shadow:0 16px 34px rgba(70,58,38,.09)}
.fcard .ic{width:40px;height:40px;border-radius:9px;background:var(--orange-soft);border:1px solid var(--orange-line);color:var(--orange);display:flex;align-items:center;justify-content:center;font-size:1.05rem;margin-bottom:16px}
.fcard .ic svg{width:20px;height:20px;display:block;color:var(--orange)}
.fcard h3{font-family:var(--display);font-size:.98rem;font-weight:500;margin-bottom:8px;color:var(--graphite)}
.fcard p{font-size:.83rem;color:var(--muted)}

/* ---------- feature cards ---------- */
.cgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:46px}
.ccard{background:var(--white);border:1px solid var(--line);border-radius:12px;overflow:hidden;display:flex;flex-direction:column;box-shadow:0 10px 26px rgba(70,58,38,.05);transition:transform .3s var(--ease),border-color .3s,box-shadow .3s}
.ccard:hover{transform:translateY(-5px);border-color:var(--orange-line);box-shadow:0 18px 38px rgba(70,58,38,.1)}
.ccard .ph{aspect-ratio:16/10;overflow:hidden;background:var(--white)}
.ccard .ph img{width:100%;height:100%;object-fit:contain}
.ccard .bd{padding:22px 24px 24px}
.ccard .city{font-family:var(--display);font-size:.7rem;font-weight:500;color:var(--orange);letter-spacing:.12em;display:flex;align-items:center;gap:7px;margin-bottom:8px}
.ccard .city::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--orange)}
.ccard h3{font-family:var(--display);font-size:1.06rem;font-weight:500;margin-bottom:4px;color:var(--graphite)}
.ccard .sub{font-size:.78rem;color:var(--muted-2);margin-bottom:12px}
.ccard ul{list-style:none}
.ccard li{font-size:.82rem;color:#4A4437;padding:4px 0 4px 15px;position:relative;line-height:1.55}
.ccard li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:2px;background:var(--orange)}

/* ---------- port / kv rows ---------- */
.port-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:clamp(30px,4.5vw,64px);align-items:center}
.kv{border-top:1px solid var(--line);margin-top:26px}
.kv .row{display:grid;grid-template-columns:150px 1fr;gap:18px;padding:15px 2px;border-bottom:1px solid var(--line);font-size:.89rem}
.kv .row b{font-family:var(--display);color:var(--orange);font-weight:500}
.kv .row span{color:#4A4437}
.pimg{border-radius:12px;overflow:hidden;box-shadow:0 24px 54px rgba(70,58,38,.16)}
.pimg img{width:100%;object-fit:cover;aspect-ratio:16/10.5}

/* ---------- graphite band ---------- */
.band{background:var(--graphite);color:var(--white);padding:clamp(44px,6vw,64px) 0;position:relative}
.band::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--orange)}
.band-in{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.band h2{font-family:var(--display);font-size:clamp(1.4rem,2.8vw,1.95rem);font-weight:600;line-height:1.32;margin-bottom:10px}
.band p{color:rgba(252,250,246,.76);max-width:640px;font-size:.92rem}
.band .bctas{display:flex;gap:13px;flex:none;flex-wrap:wrap}
/* 石墨底上的主按钮改用安全橙，避免深底深钮 */
.band .btn-dark{background:var(--orange);color:var(--white);box-shadow:0 10px 24px rgba(0,0,0,.18)}
.band .btn-dark:hover{background:var(--orange-2);transform:translateY(-2px)}

/* ---------- form ---------- */
.fsec{display:grid;grid-template-columns:1fr 1.1fr;gap:clamp(30px,4.5vw,60px);align-items:start}
.fsec .fl h4{font-family:var(--display);font-size:1rem;font-weight:500;margin:24px 0 8px}
.fsec .fl .tiks{list-style:none;margin-top:6px}
.fsec .fl .tiks li{position:relative;padding:5px 0 5px 26px;font-size:.89rem;color:#4A4437}
.fsec .fl .tiks li::before{content:"✓";position:absolute;left:0;top:5px;color:var(--orange);font-weight:600}
.fcard-f{background:var(--white);border:1px solid var(--line);border-radius:12px;padding:clamp(24px,3.2vw,38px);box-shadow:0 12px 30px rgba(70,58,38,.05)}
.fcard-f .fh{font-family:var(--display);font-size:.92rem;font-weight:500;color:var(--orange);margin-bottom:20px;letter-spacing:.01em}
.frow{display:grid;grid-template-columns:1fr 1fr;gap:15px}
.fld{margin-bottom:15px}
.fld label{display:block;font-size:.76rem;font-weight:500;color:#4A4437;margin-bottom:6px;letter-spacing:.01em}
.fld input,.fld select,.fld textarea{width:100%;font-family:var(--body);font-size:.9rem;color:var(--graphite);background:var(--sand);border:1px solid var(--line);border-radius:6px;padding:12px 14px;transition:border-color .25s,box-shadow .25s}
.fld input:focus,.fld select:focus,.fld textarea:focus{outline:none;border-color:var(--orange);box-shadow:0 0 0 3px var(--orange-soft)}
.fld textarea{min-height:120px;resize:vertical}
.fnote{font-size:.72rem;color:var(--muted-2);margin-top:12px}
.fbot{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:6px;flex-wrap:wrap}
.fmsg{display:none;margin-top:14px;font-size:.84rem;font-weight:500;color:var(--orange-2);background:var(--orange-soft);border:1px solid var(--orange-line);padding:10px 14px;border-radius:6px}

/* ---------- contact page ---------- */
.ct-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:26px;align-items:start;margin-top:44px}
.info-dark{background:var(--white);border:1px solid var(--line);color:var(--graphite);border-radius:12px;padding:clamp(24px,3vw,32px);box-shadow:0 10px 28px rgba(70,58,38,.05)}
.info-dark h3{font-family:var(--display);font-size:1.04rem;font-weight:500;margin-bottom:4px}
.info-dark .idsub{font-size:.78rem;color:var(--muted);margin-bottom:18px}
.irow{display:flex;gap:14px;padding:14px 0;border-top:1px solid var(--line);align-items:flex-start}
.irow .ic{flex:none;width:38px;height:38px;border-radius:8px;background:var(--orange-soft);display:flex;align-items:center;justify-content:center}
.irow .ic svg{stroke:var(--orange)}
.irow b{font-size:.74rem;font-weight:500;display:block;color:var(--muted);letter-spacing:.02em}
.irow span{font-size:.92rem;display:block;margin-top:1px}
.mat-card{background:var(--white);border:1px solid var(--line);border-radius:12px;padding:clamp(22px,2.8vw,30px);margin-top:22px}
.mat-card h3{font-family:var(--display);font-size:.98rem;font-weight:500;margin-bottom:6px}
.mat-card p{font-size:.83rem;color:var(--muted);margin-bottom:16px}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:44px}
.faq{background:var(--white);border:1px solid var(--line);border-radius:10px;padding:26px 28px}
.faq h3{display:flex;gap:11px;align-items:flex-start;font-family:var(--display);font-size:.96rem;font-weight:500;margin-bottom:9px}
.faq h3 .q{flex:none;width:21px;height:21px;border-radius:50%;background:var(--orange);color:var(--white);font-family:var(--data);font-size:.8rem;font-weight:600;display:flex;align-items:center;justify-content:center;margin-top:2px}
.faq p{font-size:.85rem;color:var(--muted)}

/* ---------- customization page ---------- */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:46px}
.tier{background:var(--white);border:1px solid var(--line);border-radius:12px;padding:28px 26px;position:relative;overflow:hidden;transition:transform .3s var(--ease),box-shadow .3s,border-color .3s}
.tier:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(70,58,38,.09);border-color:var(--orange-line)}
.tier .tl{font-family:var(--data);font-size:.74rem;font-weight:600;letter-spacing:.16em;color:var(--orange);text-transform:uppercase;display:inline-block;border:1px solid var(--orange-line);border-radius:999px;padding:3px 12px}
.tier::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--orange)}
.tier h3{font-family:var(--display);font-size:1.1rem;font-weight:500;margin:8px 0 10px}
.tier .td{font-size:.85rem;color:#4A4437;padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:6px}
.tier .grp{padding:11px 0;border-bottom:1px solid var(--line)}
.tier .grp:last-child{border-bottom:0}
.tier .grp b{display:block;font-size:.86rem;font-weight:500;color:var(--graphite)}
.tier .grp span{display:block;font-size:.78rem;color:var(--muted);line-height:1.6;margin-top:3px}
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-top:46px;text-align:center}
.steps .stp .no{width:44px;height:44px;border-radius:8px;background:var(--orange);color:var(--white);font-family:var(--data);font-weight:600;font-size:1.1rem;display:flex;align-items:center;justify-content:center;margin:0 auto 13px}
.steps .stp b{font-family:var(--display);font-size:.9rem;font-weight:500;display:block}
.steps .stp span{font-size:.75rem;color:var(--muted);display:block;margin-top:4px}
.cta-strip{margin-top:50px;background:var(--sand-2);border-radius:12px;padding:24px 28px 24px 30px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;position:relative;overflow:hidden}
.cta-strip::before{content:"";position:absolute;top:0;bottom:0;left:0;width:3px;background:var(--orange)}
.cta-strip p{font-size:.91rem;color:#4A4437}
.coops{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:44px}
.coop{background:var(--white);border:1px solid var(--line);border-radius:10px;padding:26px 28px;display:flex;gap:18px;transition:transform .3s var(--ease),box-shadow .3s,border-color .3s}
.coop:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(70,58,38,.09);border-color:var(--orange-line)}
.coop .no{flex:none;width:34px;height:34px;border-radius:50%;background:var(--orange);color:var(--white);font-family:var(--data);font-weight:600;font-size:1rem;display:flex;align-items:center;justify-content:center}
.coop h3{font-family:var(--display);font-size:.98rem;font-weight:500;margin-bottom:6px}
.coop p{font-size:.84rem;color:var(--muted)}

/* ---------- products page ---------- */
.rail-sec{background:linear-gradient(180deg,var(--white) 0%,var(--sand) 100%);color:var(--graphite);padding:calc(var(--nav-h) + clamp(14px,2vw,22px)) 0 clamp(48px,6vw,72px)}
.rail-kick{font-family:var(--display);font-size:.74rem;font-weight:500;letter-spacing:.14em;color:var(--orange);display:flex;align-items:center;gap:10px;margin-bottom:14px}
.rail-kick::before{content:"";width:22px;height:2px;background:var(--orange)}
.rail-top{display:flex;align-items:flex-end;justify-content:flex-end;gap:20px;flex-wrap:wrap;margin-bottom:16px}
.rail-top .ss{color:var(--muted)}
/* rail header compression — scoped to .rail-sec only, shared .sec/.st untouched */
.rail-sec .dash{margin-bottom:12px}
.rail-sec .rail-kick{margin-bottom:10px}
.rail-sec .rail-top .st{font-size:clamp(1.2rem,2.3vw,1.45rem);line-height:1.3}
.rail-sec .rail-top .ss{font-size:.83rem;margin-top:8px;color:var(--muted);line-height:1.5;max-width:62ch}
.rail-ctrl{display:flex;align-items:center;gap:10px}
.rbtn{width:44px;height:44px;border-radius:50%;border:1px solid var(--line-2);background:var(--white);color:var(--graphite);font-size:1rem;transition:all .25s;box-shadow:0 4px 12px rgba(70,58,38,.06)}
.rbtn:hover{background:var(--orange);border-color:var(--orange);color:var(--white)}
.rail-view{overflow:hidden;border-radius:12px}
.rail-track{display:flex;gap:20px;transition:transform .55s var(--ease);cursor:grab}
.rail-track.dragging{transition:none;cursor:grabbing}
.rslide{flex:0 0 calc((100% - 40px)/3);background:var(--white);border:1px solid var(--line);border-radius:12px;overflow:hidden;display:flex;flex-direction:column;box-shadow:0 8px 22px rgba(70,58,38,.05)}
.rslide .ph{aspect-ratio:16/10;overflow:hidden;background:var(--white);padding:10px 14px}
.rslide .ph > img{width:100%;height:100%;object-fit:contain;transition:transform .6s var(--ease)}
.rslide .ph > div img{width:100%;height:100%;object-fit:cover}
.rslide:hover .ph > img{transform:scale(1.04)}
.rslide .bd{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.rslide h3{font-family:var(--display);font-size:1.06rem;font-weight:500;color:var(--graphite)}
.rslide h3 .en{font-family:var(--data);font-weight:500;font-size:.76rem;letter-spacing:.15em;color:var(--orange);margin-left:8px;text-transform:uppercase}
.rslide ul{list-style:none}
.rslide li{position:relative;padding:3px 0 3px 16px;font-size:.79rem;color:var(--muted);line-height:1.55}
.rslide li::before{content:"";position:absolute;left:0;top:.75em;width:6px;height:2px;background:var(--orange)}
.rslide .go{margin-top:auto;padding-top:8px;font-family:var(--display);font-size:.82rem;font-weight:500;color:var(--orange)}
.rslide .go:hover{color:var(--orange-2)}
.rail-prog{height:3px;background:var(--line-2);border-radius:2px;margin-top:26px;overflow:hidden}
.rail-prog i{display:block;height:100%;width:20%;background:var(--orange);border-radius:2px;transition:transform .4s var(--ease),width .4s}

/* pills */
.pillbar{position:sticky;top:var(--nav-h);z-index:40;background:rgba(247,241,230,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);padding:11px 0}
.pills{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none}
.pills::-webkit-scrollbar{display:none}
.pill{flex:none;font-family:var(--display);font-size:.78rem;font-weight:400;color:#544F45;background:var(--white);border:1px solid var(--line-2);border-radius:999px;padding:7px 16px;transition:all .25s}
.pill:hover{border-color:var(--orange);color:var(--orange)}
.pill.on{background:var(--graphite);border-color:var(--graphite);color:var(--white);font-weight:500}

/* category sections */
.cat{padding:clamp(52px,7vw,84px) 0 clamp(40px,5vw,60px);border-bottom:1px solid var(--line)}
.cat:last-of-type{border-bottom:0}
.cat-head{display:grid;grid-template-columns:1.25fr .75fr;gap:clamp(24px,3.5vw,48px);align-items:center;margin-bottom:34px}
.cat-head .ck{font-family:var(--data);font-size:.78rem;font-weight:600;letter-spacing:.18em;color:var(--orange);text-transform:uppercase}
.cat-head h2{font-family:var(--display);font-size:clamp(1.4rem,2.6vw,1.85rem);font-weight:600;line-height:1.32;margin:8px 0 10px}
.cat-head h2 .en{display:block;font-family:var(--data);font-weight:500;font-size:.8rem;letter-spacing:.16em;color:var(--muted-2);text-transform:uppercase;margin-top:3px}
.cat-head p{font-size:.89rem;color:var(--muted)}
.cat-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.cat-chips .c{font-size:.74rem;font-weight:500;color:var(--graphite);background:var(--yellow-soft);border:1px solid rgba(255,184,28,.5);border-radius:999px;padding:5px 13px}
.cat-thumb{border-radius:12px;overflow:hidden;box-shadow:0 20px 44px rgba(70,58,38,.14)}
.cat-thumb{background:var(--white)}
.cat-thumb img{width:100%;height:100%;object-fit:contain;aspect-ratio:4/3}
.mgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.mgrid.c3{grid-template-columns:repeat(3,1fr)}
.mgrid.c2{grid-template-columns:repeat(2,1fr)}
.mcard{background:var(--white);border:1px solid var(--line);border-radius:11px;padding:22px 22px 20px;display:flex;flex-direction:column;transition:transform .3s var(--ease),box-shadow .3s,border-color .3s}
.mcard:hover{transform:translateY(-4px);box-shadow:0 18px 38px rgba(70,58,38,.1);border-color:var(--orange-line)}
.mtop{display:flex;align-items:baseline;justify-content:space-between;gap:8px;flex-wrap:wrap;margin-bottom:6px}
.mtop h3{font-family:var(--data);font-weight:600;font-size:1.42rem;letter-spacing:.02em;color:var(--graphite)}
.mtag{font-size:.68rem;font-weight:500;color:var(--graphite);background:var(--yellow-soft);border-radius:999px;padding:3px 10px;white-space:nowrap}
.mpos{font-size:.79rem;color:var(--muted);margin-bottom:12px;line-height:1.6}
.mspecs{border-top:1px solid var(--line)}
.mspecs .r{display:flex;justify-content:space-between;gap:10px;padding:7.5px 0;border-bottom:1px dashed var(--line);font-size:.79rem}
.mspecs .r:last-child{border-bottom:0}
.mspecs .k{color:var(--muted)}
.mspecs .v{font-family:var(--data);font-weight:600;font-size:.95rem;color:var(--graphite);text-align:right}
.mact{margin-top:14px;padding-top:13px;border-top:1px solid var(--line)}
.mact a{font-family:var(--display);font-size:.8rem;font-weight:500;color:var(--orange)}
.mact a:hover{color:var(--orange-2)}
.subhead{display:flex;align-items:center;gap:14px;margin:34px 0 18px}
.subhead b{font-family:var(--display);font-size:.98rem;font-weight:500;white-space:nowrap}
.subhead .en{font-family:var(--data);font-size:.78rem;letter-spacing:.15em;color:var(--muted-2);text-transform:uppercase;white-space:nowrap}
.subhead i{flex:1;height:1px;background:var(--line)}
.subhead .cnt{font-family:var(--data);font-size:.82rem;color:var(--orange);font-weight:600;white-space:nowrap}
.tblwrap{background:var(--white);border:1px solid var(--line);border-radius:11px;overflow:hidden;margin-top:22px}
.tcap{display:flex;justify-content:space-between;align-items:baseline;gap:14px;padding:16px 22px;border-bottom:1px solid var(--line);flex-wrap:wrap}
.tcap b{font-family:var(--display);font-size:.92rem;font-weight:500}
.tcap span{font-size:.75rem;color:var(--muted)}
.tbl-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.tbl-scroll::-webkit-scrollbar{height:6px}
.tbl-scroll::-webkit-scrollbar-thumb{background:var(--line-2);border-radius:3px}
table.spec{width:100%;border-collapse:collapse;font-size:.83rem;min-width:560px}
table.spec th,table.spec td{padding:9px 12px;text-align:center;border-bottom:1px solid var(--line)}
table.spec thead th{background:var(--graphite);color:var(--sand);font-family:var(--display);font-weight:500;font-size:.79rem;white-space:nowrap;letter-spacing:.02em}
table.spec thead th:first-child{text-align:left}
table.spec tbody th{text-align:left;font-weight:500;color:#4A4437;white-space:nowrap}
table.spec tbody tr:nth-child(even){background:var(--sand)}
table.spec td{font-family:var(--data);font-weight:500;font-size:.92rem}
.attcards{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.attcard{background:var(--white);border:1px solid var(--line);border-radius:10px;overflow:hidden;transition:transform .3s var(--ease),border-color .3s}
.attcard:hover{transform:translateY(-4px);border-color:var(--orange)}
.attcard .ph{aspect-ratio:4/3;overflow:hidden;background:var(--sand-2)}
.attcard img{width:100%;height:100%;object-fit:cover}
.attcard .nm{padding:10px 12px;font-size:.79rem;font-weight:500;color:var(--graphite)}
.attcard .nm .en{display:block;font-family:var(--data);font-weight:500;font-size:.7rem;letter-spacing:.12em;color:var(--muted-2);margin-top:1px;text-transform:uppercase}
.kitrow{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:22px}
.kit{border:1px dashed var(--line-2);border-radius:10px;padding:20px 22px}
.kit b{font-family:var(--display);font-size:.9rem;font-weight:500;display:block;margin-bottom:6px}
.kit span{font-size:.79rem;color:var(--muted)}

/* ---------- model card photo ---------- */
.mph{aspect-ratio:4/3;overflow:hidden;background:var(--white);margin:-22px -22px 16px;border-radius:10px 10px 0 0}
.mph img{width:100%;height:100%;object-fit:contain;display:block}
.mcard:hover .mph img{transform:scale(1.04)}

/* ---------- attachment group (3 cols) ---------- */
.attcards.q3{grid-template-columns:repeat(3,1fr)}

/* ---------- WhatsApp QR ---------- */
.qrbox{display:flex;gap:15px;align-items:center;margin-top:18px;padding-top:18px;border-top:1px solid var(--line)}
.qrbox img{width:104px;height:104px;flex:none;object-fit:contain;background:var(--white);border:1px solid var(--line);border-radius:8px;padding:6px}
.qrbox .qrt b{display:block;font-family:var(--display);font-size:.86rem;font-weight:500;color:var(--graphite);margin-bottom:4px}
.qrbox .qrt span{font-size:.75rem;color:var(--muted);line-height:1.55;display:block;max-width:20em}
.ft-qr{display:flex;align-items:center;gap:11px;margin-top:15px}
.ft-qr img{width:66px;height:66px;flex:none;object-fit:contain;background:var(--white);border:1px solid var(--line);border-radius:6px;padding:4px}
.ft-qr span{font-size:.73rem;color:var(--muted-2);line-height:1.5}

/* 双二维码：WhatsApp + 微信 */
.qrcards{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:20px;padding-top:20px;border-top:1px solid var(--line)}
.qrcard{display:flex;flex-direction:column;align-items:center;text-align:center;background:var(--white);border:1px solid var(--line);border-radius:10px;padding:14px 10px 13px}
.qrcard img{width:100%;max-width:130px;aspect-ratio:1/1;object-fit:contain;display:block;background:#fff;border-radius:6px}
.qrcard b{display:block;font-family:var(--display);font-size:.85rem;font-weight:600;color:var(--graphite);margin-top:11px;letter-spacing:.01em}
.qrcard span{display:block;font-size:.72rem;color:var(--muted);line-height:1.5;margin-top:3px}
.ft-qrs{display:flex;gap:16px;margin-top:15px;flex-wrap:wrap}
.ft-qrs .ft-qr{flex-direction:column;align-items:center;gap:6px;margin-top:0}
.ft-qrs .ft-qr span{text-align:center}

/* ---------- footer ---------- */
.footer{background:var(--sand-2);color:var(--muted);padding:52px 0 30px;border-top:3px solid var(--orange)}
.ft-grid{display:grid;grid-template-columns:1.3fr .55fr .75fr;gap:clamp(26px,4vw,60px)}
.footer .brand b{color:var(--graphite)}
.footer .brand small{color:var(--muted-2)}
.ft-desc{font-size:.83rem;margin-top:18px;max-width:420px;line-height:1.78}
.ft-co{font-family:var(--display);font-size:.82rem;font-weight:500;color:var(--graphite);margin-top:18px}
.ft-h{font-family:var(--display);font-size:.8rem;font-weight:500;color:var(--graphite);letter-spacing:.06em;margin-bottom:16px}
.ft-nav{display:flex;flex-direction:column;gap:9px}
.ft-nav a{font-size:.83rem;transition:color .2s}
.ft-nav a:hover{color:var(--orange)}
.ft-c{display:flex;flex-direction:column;gap:12px}
.ft-c .irow{padding:0;border:0}
.ft-c .irow b{font-size:.71rem;color:var(--muted-2)}
.ft-c .irow span{font-size:.85rem}
.ft-base{margin-top:38px;padding-top:20px;border-top:1px solid var(--line-2);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:.71rem;color:var(--muted-2)}
.footer .langdd{margin-top:2px}
.footer .langbtn{background:var(--white);border-color:var(--line-2);color:var(--graphite)}
.footer .langbtn:hover{border-color:var(--orange);color:var(--orange)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}
.to-top{position:fixed;right:22px;bottom:22px;z-index:90;width:46px;height:46px;border-radius:50%;background:var(--graphite);color:var(--white);border:0;display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transform:translateY(10px);transition:all .35s;box-shadow:0 10px 26px rgba(70,58,38,.22)}
.to-top.show{opacity:1;pointer-events:auto;transform:none}
.to-top:hover{background:var(--orange)}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .mgrid{grid-template-columns:repeat(2,1fr)}
  .rslide{flex:0 0 calc((100% - 20px)/2)}
  .cgrid{grid-template-columns:1fr 1fr}
  .attcards{grid-template-columns:repeat(4,1fr)}
  .attcards.q3{grid-template-columns:repeat(3,1fr)}
  .ft-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:920px){
  .nav{position:fixed;top:var(--nav-h);left:0;right:0;background:var(--sand);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:14px clamp(18px,4vw,44px) 22px;gap:2px;display:none;box-shadow:0 24px 40px rgba(70,58,38,.12);max-height:calc(100vh - var(--nav-h));overflow-y:auto}
  .nav.open{display:flex}
  .nav > .ni{width:100%}
  .nav a.nl{padding:12px 10px;font-size:.92rem}
  .drop{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:0;background:transparent;display:none;padding:0 0 6px 14px}
  .ni:hover .drop{display:block}
  .burger{display:flex}
  .hd-right{margin-left:auto}
  .hd-right .btn{padding:10px 16px;font-size:.82rem}
  .hero-grid,.split,.port-grid,.fsec,.ct-grid{grid-template-columns:1fr}
  .statrow{grid-template-columns:repeat(2,1fr)}
  .cgrid,.tiers{grid-template-columns:1fr}
  .coops{grid-template-columns:1fr}
  .cat-head{grid-template-columns:1fr}
  .faq-grid{grid-template-columns:1fr}
  .band-in{flex-direction:column;align-items:flex-start}
}
@media (max-width:640px){
  .hd-right .btn{display:none}
  .nav > .ni.nav-cta{display:block;margin-top:10px}
  .nav > .ni.nav-cta a.nl{background:var(--orange);color:var(--white);text-align:center;font-weight:500;padding:13px 10px}
  .nav > .ni.nav-cta a.nl::after{display:none}
  .brand b{font-size:1.18rem}
  .langbtn{padding:7px 11px;font-size:.76rem}
  .mgrid,.mgrid.c3,.mgrid.c2{grid-template-columns:1fr}
  .rslide{flex:0 0 100%}
  .subhead{flex-wrap:wrap;gap:8px 14px}
  .subhead i{flex:1 1 40px;min-width:40px}
  .frow{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr);row-gap:24px}
  .steps .stp:last-child{grid-column:1 / -1}
  .attcards,.attcards.q3{grid-template-columns:repeat(2,1fr)}
  .kitrow{grid-template-columns:1fr}
  .statrow{grid-template-columns:1fr 1fr}
  .ft-grid{grid-template-columns:1fr}
  .kv .row{grid-template-columns:1fr;gap:4px}
  .brand small{display:none}
  .cta-strip{flex-direction:column;align-items:stretch;text-align:left}
  .cta-strip p{margin-bottom:4px}
  .cta-strip .btn{width:100%;justify-content:center}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}